Epson | C823572 (Ethernet) | Service manual | Epson C823572 (Ethernet) Service manual

Service Manual
FX-880/FX-1180
Epson America, Inc.
TM-FX88/1180
EPSON
FX-880/FX-1180
Service Manual
Revision
st
1 Release
ii
Date
August 1998
EPSON FX-880/FX-1180 Service Manual
Table of Contents
1. Product Description ................................................................................1-1
2. Operating Principles ...............................................................................2-1
3. Disassembly and Assembly....................................................................3-1
4. Adjustments ...........................................................................................4-1
5. Troubleshooting......................................................................................5-1
6. Maintenance...........................................................................................6-1
7. Appendix ............................................................................................... A-1
EPSON FX-880/FX-1180 Service Manual
iii
iv
EPSON FX-880/FX-1180 Service Manual
Preface
The EPSON FX-880 and EPSON FX-1180 are identical products, except for their width. To permit
printing on wider paper, the FX-1180 has a wider body than the FX-880, but is the same as the
FX-880 in all other respects. Unless noted otherwise, all information and instructions in this
manual can be used to service either printer.
EPSON FX-880/FX-1180 Service Manual
v
vi
EPSON FX-880/FX-1180 Service Manual
FCC COMPLIANCE STATEMENT
FOR AMERICAN USERS
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio and television reception. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio
and television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
•
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
WARNING
The connection of a non-shielded equipment interface cable to this equipment will invalidate the FCC Certification of this
device and may cause interference levels that exceed the limits established by the FCC for this equipment. It is the
responsibility of the user to obtain and use a shielded equipment interface cable with this device. If this equipment has
more than one interface connector, do not leave cables connected to unused interfaces.
Changes or modifications not expressly approved by the manufacturer could void the user's authority to operate the
printer.
FOR CANADIAN USERS
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le materiel brouilleur du
Canada.
COPYRIGHT NOTICE
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form
or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the written permission of Epson
America, Inc. No patent liability is assumed with respect to use of the information contained herein. Neither is any
liability assumed for damages resulting from the use of the information contained herein. While every precaution has
been taken in the preparation of this book, Epson America, Inc., assumes no responsibility for errors and omissions.
Neither Epson America, Inc., nor its affiliates shall be liable to the purchaser of this product or third parties for damages,
losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this
product or unauthorized modifications, repairs, or alterations to this product.
Epson America, Inc., shall not be liable against any damages or problems arising from the use of any options or any
consumable products other than those designated as Original EPSON Products or EPSON-Approved Products by Seiko
Epson Corporation.
EPSON FX-880/FX-1180 Service Manual
vii
TRADEMARKS
EPSON and ESC/P are registered trademarks and ESC/P 2, EPSON FX-880, and EPSON FX-1180 are
trademarks of Seiko Epson Corporation. Epson Connection is a service mark of Epson America, Inc.
General Notice: Other product names used herein are for identification purposes only and may be trademarks of their
respective companies. EPSON disclaims any and all rights in those marks.
Copyright © 1998 Epson America, Inc.
20770 Madrona Avenue
Torrance, CA 90509-2842
viii
EPSON FX-880/FX-1180 Service Manual
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to:
1. personal injury.
2. damage to equipment.
WARNING
Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be
exercised in performing procedures preceded by a WARNING heading.
CAUTION
Signals a precaution which, if ignored, could result in damage to equipment.
Always observe the precautionary measures itemized below when performing repair/maintenance
procedures.
WARNING
1. Always disconnect the product from both the power source and host computer before performing any
maintenance or repair procedure.
2. No work should be performed on the unit by persons unfamiliar with basic safety measures dictated for all
electronics technicians in their line of work.
3. In performing testing described in this manual, do not connect the unit to a power source until instructed
to do so. When the power supply cable must be connected, use extreme caution in working on the power
supply and other electronic components.
CAUTION
1. Repairs on EPSON products should be performed only by an EPSON-certified repair technician.
2. Make certain that the source voltage is the same as the rated voltage listed on the serial number/rating
plate. If the EPSON product has a primary AC rating different from the available power source, do not
connect it to the power source.
3. Always verify that the EPSON product has been disconnected from the power source before removing or
replacing printed circuit boards and/or individual chips.
4. To protect sensitive µP chip and circuitry, use static discharge equipment, such as anti-static wrist straps,
when accessing internal components.
5. Replace malfunctioning components only with those components recommended by the manufacturer;
introduction of second-source ICs or other nonapproved components may damage the product and void
any applicable EPSON warranty.
EPSON FX-880/FX-1180 Service Manual
ix
1. Product Description
Features ..................................................................................................................................................... 1-1
Accessories................................................................................................................................................ 1-3
Hardware Specifications ............................................................................................................................ 1-4
Printing Method.................................................................................................................................. 1-4
Printing Specifications ....................................................................................................................... 1-4
Paper Handling Specifications........................................................................................................... 1-5
Paper Specifications .......................................................................................................................... 1-7
Cut Sheets ............................................................................................................................. 1-7
Envelopes .............................................................................................................................. 1-8
Continuous Paper .................................................................................................................. 1-8
Roll paper ............................................................................................................................ 1-10
Ribbon Cartridge.............................................................................................................................. 1-10
Input data buffer............................................................................................................................... 1-10
Electrical Specifications ....................................................................................................................1-11
Reliability.......................................................................................................................................... 1-12
Environmental Requirements .......................................................................................................... 1-12
Safety Approvals.............................................................................................................................. 1-13
CE Marking ...................................................................................................................................... 1-13
Acoustic Noise ................................................................................................................................. 1-13
Firmware Specifications........................................................................................................................... 1-14
Control Codes and Fonts................................................................................................................. 1-14
Interface Specifications ................................................................................................................... 1-15
Parallel Interface (Forward Channel)................................................................................... 1-15
Parallel Interface (Reverse Channel) .................................................................................. 1-17
Interfaces............................................................................................................................. 1-18
Interface Selection............................................................................................................... 1-19
Preventing Data Transfer Timeout in the Host ................................................................................ 1-19
Control Panel Operation........................................................................................................................... 1-20
Control Panel ................................................................................................................................... 1-20
Overview of Functions ..................................................................................................................... 1-20
Operation in Normal Mode .................................................................................................. 1-20
Operation at Power-On........................................................................................................ 1-21
Operation in the Default Setting Mode ................................................................................ 1-21
Details of Selected Functions .......................................................................................................... 1-22
Micro-Adjust Function.......................................................................................................... 1-22
Tear-off Function.................................................................................................................. 1-22
Changing the Default Settings ............................................................................................. 1-23
Bidirectional Adjustment Function ....................................................................................... 1-25
Printer States and Error Reporting........................................................................................................... 1-27
Initialization ...................................................................................................................................... 1-27
Error Conditions............................................................................................................................... 1-27
Conditions Indicated by the LEDs and Beeper ................................................................................ 1-28
Main Components.................................................................................................................................... 1-29
EPSON FX-880/FX-1180 Service Manual
1-i
Product Descriptions
1-ii
EPSON FX-880/FX-1180 Service Manual
Product Description
Features
The EPSON FX-880 and FX-1180 are small-footprint, 9-pin serial impact dot matrix printers. Except for
their width, the two printers are exactly the same. The FX-1180 has a wider carriage unit and paper
handling mechanism, and prints on wider paper than the FX-880.
The main features of the FX-880 and FX-1180 are:
‰ Print Speed
High speed draft
Draft
NLQ
410 cps at 10 cpi
(max. 455 cps at 12 cpi)
310 cps at 10 cpi
77 cps at 10 cpi
‰ Feeding Method
Friction feed
Push tractor feed
Push and pull tractor feed
Pull tractor feed
Cut-sheet feeder
(front, rear)
(front, rear)
(front, rear)*
(front, rear, bottom)
(CSF, optional)
‰ Feeder
Front push tractor, rear push tractor,
CSF bin1/bin2 (optional), roll paper holder (optional)
pull tractor (optional)
‰ Paper/Media
Single sheet, continuous, and multi-part paper, envelopes, card stock,
labels, and roll paper**
‰ Printable columns
FX-1180: 136 columns (at 10 cpi)
FX-880: 80 columns (at 10 cpi)
‰ Built-in fonts
Bitmap fonts:
EPSON Draft
EPSON Roman
EPSON Sans Serif
10, 12, 15 cpi
10, 12, 15 cpi, proportional
10, 12, 15 cpi, proportional
Barcode fonts:
EAN-13, EAN-8, Interleaved 2 of 5, UPC-A, UPC-E,
Code 39, Code 128, POSTNET
Notes: *Additional tractor is required.
**Roll paper is not available on all models, and is not available in the U.S.
EPSON FX-880/FX-1180 Service Manual
1-1
Product Description
‰ Character tables
Standard version
NLSP version
‰ Character sets
12 international character sets and one legal character set
‰ Input buffer
32KB or 0KB (selectable in the default-setting mode or using the
EPSON Remote! utility with Windows 95)
‰ Acoustic noise
Approximately 55 dB(A), ISO 7779 pattern
‰ Reliability
Total print volume
MTBF
Printhead life
Ribbon life
‰ Interfaces
One standard bidirectional, 8-bit, parallel interface with IEEE-1284
nibble mode support, and one optional Type B level 2 interface slot
‰ Control codes
ESC/P and IBM 2380 Plus (for the FX-880) or 2381 Plus (for the
FX-1180) character emulation
‰ Copy capability
1 original + 5 copies
11 tables
19 tables
6.5 million lines, except printhead
4000 power-on hours (POH) at 25% Duty-Cycle
200 million strokes per wire
3 million characters (in Draft mode at 10 cpi with
approximately 14 dots per character)
Figure 1-1. Exterior of FX-880
(FX-1180 similar but wider)
1-2
EPSON FX-880/FX-1180 Service Manual
Product Description
Accessories
Table 1-1. Items Included with the Printer
Enclosed item
Quantity
User’s guide
1
Driver diskette
1
Ribbon cartridge
1
1-2. Consumables and Optional Units
Part Number
Item
FX-1180
FX-880
Ribbon cartridge
8755
8750
High capacity cut sheet feeder (bin1)
C806401
C806381
Second bin cut sheet feeder
C806391
C806371
Push/pull tractor unit
1038519
C800201
Roll paper holder
8310
8310
Front paper guide
C814031
C814021
Front sheet guide
C814011
C814001
0KB type-B Serial interface card
C823051
C823051
32KB type-B intelligent serial I/F card
C823071
C823071
Coax type-B I/F card
C823141
C823141
Twinax type-B I/F card
C823151
C823151
Multi-protocol Ethernet type-B I/F card
C823572
C823572
Bi-directional parallel type-B I/F card
C823452
C823452
LocalTalk I/F card
C823121
C823121
EPSON FX-880/FX-1180 Service Manual
(bin2)
1-3
Product Description
Hardware Specifications
This section describes the hardware specifications of the FX-880 and FX-1180.
Printing Method
‰ Printing method
Impact dot matrix
‰ Number of pins
9 pins
‰ Pin arrangement
9×1
‰ Pin diameter
0.0114 inch (0.29 mm)
‰ Print color
Black
‰ Print direction
Bidirectional logic seeking when printing text and graphics.
Unidirectional text or graphics printing can be selected with
software commands.
Printing Specifications
‰ Copy capability
1 original + 5 copies
Table 1-3. Print Speed and Printable Columns
Printing Mode
Character Pitch
Printable Columns
Print Speed (cps) at 10 cpi
FX-1180
FX-880
Normal
Copy
High-speed draft
10 cpi
136
80
410
345
Draft
10 cpi
136
80
310
260
NLQ
10 cpi
136
80
78
65
Notes:
1. Both printers can print a maximum of 455 cps at a pitch of 12 cpi.
2. If the power supply voltage drops below the lower limit, the printer stops until the voltage returns to the
normal range. The printer then resumes printing, but more slowly than before.
3. If the printhead temperature rises above the upper limit, the printer stops until the printhead cools
down to the normal temperature. The printer then resumes printing, but more slowly than before.
4. When the platen gap lever is set at position 2 or higher, the printer goes into copy mode. In copy
mode, the print speed slows to prevent the dot wires from getting stuck in the thicker paper as the
printhead travels across the page. Note that “copy mode,” as used in this manual, does not refer to
overstrike, a function not supported by the FX-880 or FX-1180 printer.
1-4
EPSON FX-880/FX-1180 Service Manual
Product Description
Table 1-4. Print Resolution
Print Mode
Horizontal density
Vertical density
Adjacent dot printed?
High-speed draft
90 dpi
72 dpi
No
Draft
120 dpi
72 dpi
No
NLQ
240 dpi
144 dpi
No
Bit image
60, 72, 80, 90 or
120 dpi
72 dpi
Yes
120 or 240 dpi
72 dpi
No
‰ Control codes
ESC/P and IBM 2380/2381 Plus character emulation.
Paper Handling Specifications
‰ Paper feed methods
Friction feed (front, rear)
Push tractor (front, rear)
Pull tractor (front, rear, bottom)
Push and pull tractor (additional tractor required)
CSF bin1/bin2 (optional)
Roll paper holder (optional)
‰ Paper path
Manual Insertion
CSF
Tractor
‰ Paper capacity
Single-bin cut-sheet feeder:
2
up to 50 sheets of 22 lb (80 g/m ) paper
Front in, front out
Rear in, front out
Rear, front, or bottom in, front out
Note:
The total thickness of the paper stack can be up to 0.20 inches
(5 mm).
High-capacity cut-sheet feeder:
2
up to 150 sheets of 22 lb (82 g/m ) paper
up to 25 plain or bond envelopes
up to 30 airmail envelopes
Note:
The total thickness of the paper stack can be up to 0.59 inches
(15 mm).
‰ Line spacing
1/6 inch or programmable in increments of 1/216 inch
EPSON FX-880/FX-1180 Service Manual
1-5
Product Description
‰ Feed speed
Table 1-5. Feed Speed
Mode
Type of Feed
Speed
Normal
1/6 inch
62 ms/line
Continuous
5.0 inches/sec (0.127 m/sec)
1/6 inch
83 ms/line
Continuous
3.1 inches/sec (0.078 m/sec)
Copy
‰ Release lever
Set the paper release lever using the following table.
Table 1-6. Paper Release Lever Position
Lever Position
Paper Entrance
Paper Types
Single-sheet
position
Front insertion
Cut sheet (single sheet and multi-part)
Card stock
CSF bin1
Cut sheet (single sheet and multi-part)
Envelopes, card stock
CSF bin2
Cut sheet (single sheet)
From rear using roll paper holder
Roll paper
Front push tractor
position
From front using front push tractor, or
using front push and pull tractors in
combination
Continuous paper (single sheet and multi-part)
Rear push tractor
position
From rear using rear push tractor, or rear
push and pull tractors in combination
Continuous paper (single sheet and multi-part)
Pull tractor position
From front, rear, or bottom using topmounted pull tractor
Continuous paper (single sheet and multi-part)
‰ Paper thickness lever
Set the paper thickness lever, as indicated in the following table.
Table 1-7. Paper Thickness Lever Position
Lever Position
1-6
Paper Thickness (inches)
Paper Thickness (mm)
Minimum
Maximum
Minimum
Maximum
0
0.0024
0.0047
0.065
0.12
1
0.0047
0.0075
0.12
0.19
2
0.0075
0.0102
0.19
0.26
3
0.0102
0.0126
0.26
0.32
4
0.0126
0.0142
0.32
0.36
5
0.0142
0.0157
0.36
0.40
6
0.0157
0.0205
0.40
0.52
EPSON FX-880/FX-1180 Service Manual
Product Description
Paper Specifications
This section describes the types of paper that can be used with this printer.
Cut Sheets
Table 1-8. Specifications for Cut Sheets (as single sheets of paper)
Width
Length
Thickness
Weight
Quality
FX-1180: 5.8 to 16.5 inches (148 to 420 mm)
FX-880:
5.8 to 10.1 inches (148 to 257 mm)
Front entry: 7.2 to 14.3 inches (182 to 364 mm)
Rear entry: 3.6 to 14.3 inches (92 to 364 mm)
0.0025 to 0.0055 inches (0.065 to 0.14 mm)
2
14 to 24 lb (52 to 90 g/m )
Plain or recycled paper; neither curled, folded, nor crumpled
Note:
Printing on recycled paper or card stock is available only at normal temperatures and humidity.
Table 1-9. Specifications for Cut Sheets (as multi-part forms)
Insertion
Width
Length*
Copies
Total
thickness
Weight
Quality
Joining
Front or rear entry
FX-1180: 5.8 to 16.5 inches (148 to 420 mm)
FX-880:
5.8 to 10.1 inches (148 to 257 mm)
7.2 to 14.3 inches (182 to 364 mm)
1 original + 5 copies
0.0047 to 0.018 inches (0.12 to 0.46 mm)
2
12 to 15 lb (40 to 58 g/m )
Carbonless multi-part forms, neither curled, folded, nor crumpled
Apply glue in a straight line at the top or at one side of a form.
Notes:
1. * Maximum length, including perforation area. Length excluding perforation area is 11.7".
2. Do not use CSF bin 2 when printing a multi-part form.
A
B
B
A
The minimum top and bottom margins are
0.17 inch (4.2 mm).
B
The minimum left and right margins are 0.12
inch (3 mm).
The maximum printable width is 8 inches (203.2
mm) for the FX-880 and 13.6 inches (345.4 mm)
for the FX-1180.
A
Figure 1-2. Margins for Cut Sheets
EPSON FX-880/FX-1180 Service Manual
1-7
Product Description
Envelopes
Table 1-10. Specifications for Envelopes
Envelope type
Width
Length
Insertion
Total thickness
Weight
Quality
No.6
No.10
6.5 inches (165 mm)
9.5 inches (241 mm)
3.6 inches (92 mm)
4.1 inches (105 mm)
Rear entry only
0.0063 to 0.020 inches (0.16 to 0.52 mm)
The variation in thickness in the print area, due to envelope construction,
must be within 0.0098 inches (0.25 mm).
2
12 to 24 lb (45 to 90 g/m )
Airmail envelopes without glue on the flap, bond envelopes, and plain
envelopes.
Notes:
1. Printing on envelopes should be done only at normal temperatures and humidity.
2. Do not use CSF bin 2 when printing on envelopes.
3. Insert the longer side of the envelope horizontally.
A
B
A
The minimum top and bottom margins are 0.17 inch (4.2 mm).
B
The minimum left and right margins are 0.12 inch (3 mm).
B
A
Figure 1-3. Margins for Envelopes
Continuous Paper
Table 1-11. Specifications for Continuous Paper (single sheet and multi-part)
Insertion
Width
Length
Copies
Total thickness
Weight
Weight (multi-part)
Quality
Joining
1-8
Front entry, rear entry, bottom entry
FX-1180:
FX-880:
4 to 16 inches (101.6 to 406.4 mm)
4 to 10 inches (101.6 to 254 mm)
4 to 22 inches (101.6 to 558.8 mm)
1original + 5 copies
0.0025 to 0.018 inches (0.065 to 0.46 mm)
2
14 to 22 lb (52 to 82 g/m )
2
12 to 15 lb (40 to 58 g/m )
Plain paper, recycled paper, carbonless multi-part
Apply small dots of glue, or paper staple (crimp) both the right and left sides.
EPSON FX-880/FX-1180 Service Manual
Product Description
Table 1-12. Specifications for Continuous Form Labels
Front (push or pull tractor, but preferably pull) or bottom (pull tractor)
See the figure below:
Insertion
Minimum label size
15/16" (23.8 mm)
2.5" (63.5 mm)
Label
Corner Radius 0.1" (2.5 mm)
Figure 1-4. Label
FX-1180: 4 to 16 inches (101.6 to 406.4 mm)
FX-880:
4 to 10 inches (101.6 to 254.0 mm)
4 to 22 inches (101.6 to 558.8 mm)
0.0028 to 0.0035 inches (0.07 to 0.09 mm)
0.0063 to 0.0075 inches (0.16 to 0.19 mm)
2
17 lb (68 g/m )
AVERY Continuous Form labels, AVERY Mini-Line labels, or labels of
equal quality
Backing sheet width
Backing sheet length
Backing sheet thickness
Total thickness
Label weight
Quality
Notes:
1. Printing on labels is available only at normal temperatures and humidity.
2. The base sheet for the labels must be continuous paper.
A
A
A
The minimum top and bottom margins (above and
below the perforation) are 0.17 inch (4.2 mm).
B
The minimum left and right margins are 0.51 inch (13
mm).
The maximum printable width is 8 inches (203.2 mm) for
the FX-880 and 13.6 inches (345.4 mm) for the FX-1180.
B
B
Figure 1-5. Margins for Continuous Paper
EPSON FX-880/FX-1180 Service Manual
1-9
Product Description
Roll paper
Table 1-13. Specifications for Roll Paper
Rear entry
FX-1180:
16 inches (406.4 mm)
FX-880:
8.5 inches (216 mm)
0.0028 to 0.0035 inches (0.07 to 0.09 mm)
2
14 to 22 lb (52 to 82 g/m )
Plain paper; neither curled, folded, nor crumpled
Insertion
Maximum paper width
Thickness
Weight
Quality
Note:
Using roll paper requires an optional roll paper holder.
A
B
B
A
The minimum top and bottom margins are 0.17 inch (4.2 mm).
B
The minimum left and right margins are 0.12 inch (3 mm).
The maximum printable width is 8 inches (203.2 mm) for the
FX-880 and 13.6 inches (345.4 mm) for the FX-1180.
A
Figure 1-6. Margins for Roll Paper
Ribbon Cartridge
Table 1-14. Statistics for the Ribbon
Item
Specifications
Type
Fabric
Color
Black
Ribbon life
3 million characters
(in draft mode at 14 dots per character)
Input data buffer
‰ 0 Kb or 32 Kb
Note:
The size of the input data buffer depends on the printer’s default settings.
1-10
EPSON FX-880/FX-1180 Service Manual
Product Description
Electrical Specifications
Electrical specifications for the FX-880 and FX-1180 depend on both the model and the type of power
supply it contains:
Table 1-15. Electrical Specifications for the 120 V Version
Item
Specification
Rated voltage
120 VAC
Input voltage range
103.5 to 132 VAC
Rated frequency range
50 to 60 Hz
Input frequency range
49.5 to 60.5 Hz
Rated current
0.7 A (maximum 1.6 A, depending on the character type)
Power consumption
FX-1180: Approximately 36 W (ISO/IEC 10561 letter pattern)
FX-880:
Approximately 34 W (ISO/IEC 10561 letter pattern)
ENERGY STAR Compliant
Insulation resistance
10 MΩ minimum (between AC line and chassis)
Dielectric strength
1000 VAC rms 1 min or 1200 VAC rms 1 sec (between AC line and
chassis)
Table 1-16. Electrical Specifications for the 230 V Version
Item
Specification
Rated voltage
220 to 240 VAC
Input voltage range
198 to 264 VAC
Rated frequency range
50 to 60 Hz
Input frequency range
49.5 to 60.5 Hz
Rated current
0.4 A (maximum 0.9 A, depending on the character type)
Power consumption
FX-1180: Approximately 36 W (ISO/IEC 10561 letter pattern)
FX-880:
Approximately 34 W (ISO/IEC 10561 letter pattern)
ENERGY STAR Compliant
Insulation resistance
10 MΩ minimum (between AC line and chassis)
Dielectric strength
1000 VAC rms 1 min or 1200 VAC rms 1 sec (between AC line and
chassis)
EPSON FX-880/FX-1180 Service Manual
1-11
Product Description
Table 1-17. Electrical Specifications for the UPS Version
Item
Specification
Rated voltage
100 to 120 VAC or 220 to 240 VAC
Input voltage range
90 to 132 VAC or 198 to 264 VAC
Rated frequency range
50 to 60 Hz
Input frequency range
49.5 to 60.5 Hz
Rated current
at 120 V:
at 230 V:
Power consumption
FX-1180: Approximately 36 W (ISO/IEC 10561 letter pattern)
FX-880:
Approximately 34 W (ISO/IEC 10561 letter pattern)
ENERGY STAR Compliant
Insulation resistance
10 MΩ minimum (between AC line and chassis)
Dielectric strength
1500 VAC rms 1 min (between AC line and chassis)
0.8 A (maximum 2.0 A, depending on the character type)
0.5 A (maximum 1.0 A, depending on the character type)
Reliability
Table 1-18. Reliability Statistics
Item
Specifications
Total print volume
6.5 million lines (except printhead)
MTBF
4000 power-on hours (POH)
Printhead life
200 million characters/wire
Environmental Requirements
The printer requires the following conditions while operating or in storage:
Table 1-19. Environmental Requirements
Item
Specifications
Temperature
41 to 95° F (5 to 35° C), operating
*1, *2
59 to 77° F (15 to 25° C), operating
-22 to 140° F(-30 to 60° C), storage
Relative Humidity
10 to 80%, operating
*1, *2
30 to 60%, operating
*1
0 to 85%, storage
*1
*1
Notes:
1. Without condensation.
2. During printing on envelopes, card stock, labels, multi-part forms, roll paper, or recycled paper.
1-12
EPSON FX-880/FX-1180 Service Manual
Product Description
Safety Approvals
The FX-880 and FX-1180 have met the following safety approvals:
Table 1-20. Safety Information
Version
Safety Standards
EMI
120 V
UL 1950 with D3,
CSA C22.2 No. 950
FCC part 15 subpart B class B,
CSA C108.8 class B
230 V
EN60950 (VDE, NEMKO)
EN55022 (CISPR pub. 22)
class B,
AS/NZS 3548 class B
UPS
UL 1950, CSA C22.2 No. 950
FCC part 15 subpart B class B,
CSA C108.8 class B
CE Marking
The following table lists CE marking information for the 230 V version.
Table 1-21. CE Marking for the 230 V Version
Low Voltage Directive 73/23/EEC
EN60950
EMC Directive 89/336/EEC
EN55022 class B
EN61000-3-2
EN61000-3-3
EN50082-1
IEC801-2
IEC801-3
IEC801-4
Acoustic Noise
‰ Level
Approximately 55 dB (A) (ISO 7779 pattern)
EPSON FX-880/FX-1180 Service Manual
1-13
Product Description
Firmware Specifications
This section provides detailed information about firmware for the FX-880 and FX-1180.
Control Codes and Fonts
‰ Control codes
ESC/P 2 and IBM 2380/2381 Plus character emulation
‰ Typefaces
Bit map fonts
EPSON Draft
EPSON Roman
EPSON Sans Serif
10 cpi, 12 cpi, 15 cpi
10 cpi, 12 cpi, 15 cpi, proportional
10 cpi, 12 cpi, 15 cpi, proportional
Bar code fonts
EAN-13, EAN-8, Interleaved 2 of 5, UPC-A, UPC-E, Code 39, Code 128,
and POSTNET
‰ Character sets
12 international character sets and one legal character set
‰ Character tables
Table 1-22. Character Tables
Standard
version
1-14
Character Tables
Bitmap Fonts
Italic
PC437 (US Standard Europe)
PC850 (Multilingual)
PC860 (Portuguese)
PC861 (Icelandic)
PC863 (Canadian-French)
PC865 (Norwegian)
Abicomp
BRASCII
Roman 8
ISO Latin 1
EPSON Draft
EPSON Roman
EPSON Sans Serif
EPSON FX-880/FX-1180 Service Manual
Product Description
Interface Specifications
The FX-880 and FX-1180 provide a bidirectional 8-bit parallel interface and a Type-B optional interface slot
as standard.
Parallel Interface (Forward Channel)
‰ Transmission mode
8 bit parallel, IEEE-1284 compatibility mode
‰ Adaptable connector
57-30360 (AMPHENOL) or equivalent
‰ Synchronization
/STROBE pulse
‰ Handshaking
BUSY and /ACKNLG signals
‰ Signal level
TTL compatible (IEEE-1284 level 1 device)
Table 1-23. Pin Assignments for Forward Channel
Pin
Signal
Return
GND Pin
In/Out
Functional Description
1
/STROBE
19
In
Strobe pulse. Input data is latched at falling edge of
the signal.
2 to 9
DATA1 to 8
20 to 27
In
Each signal, from bit 0 to bit 7, represents parallel
input data. HIGH means data 1; LOW means data 0.
10
/ACKNLG
28
Out
This signal (negative pulse) indicates that the printer
has received data and is ready to accept more data.
11
BUSY
29
Out
This signal’s HIGH level means that the printer is not
ready to accept data.
12
PE
28
Out
This signal’s HIGH level means the printer has a
paper-out error.
13
SLCT
28
Out
Always HIGH when the printer is powered on.
14
/AFXT
30
In
Not used.
31
/INIT
30
In
This signal’s negative pulse initializes the printer.
32
/ERROR
29
Out
This signal’s LOW level means the printer is in an
error state.
36
/SLIN
30
In
This signal is always HIGH when printer power is ON.
18
Logic H

Out
This line is pulled up to +5 V through 3.9K Ω resistor.
35
+5V

Out
This line is pulled up to +5 V through 1.0K Ω resistor.
17
Chassis


Chassis GND.
16,33
19-30
GND


Signal GND.
15,34
NC


Not connected.
Note:
In/Out refers to the direction of signal flow from the printer’s point of view.
EPSON FX-880/FX-1180 Service Manual
1-15
Product Description
‰ The BUSY signal is active (HIGH) under the following conditions:
■
■
■
■
■
■
■
■
While receiving data.
When the input buffer is full.
When the INIT signal is active LOW.
When the /ERROR or PE signal is active.
During hardware initialization.
In the self-test mode.
In the adjustment mode.
In default-setting mode.
‰ The /ERROR signal is active LOW under the following conditions:
■
■
■
If there is a release lever error.
If there is a paper-out error.
If there is a paper-jam error.
‰ The PE signal is active HIGH under the following conditions:
■
If there is a paper-out error
DATA (n+1)
DATA (n)
DATA
thold
STROBE
tsetup
tnex t
tstb
BUSY
tready
ACKNLG
tbus y
treply
tack
tnbusy
Figure 1-7. Data Transmission Timing
1-16
EPSON FX-880/FX-1180 Service Manual
Product Description
Table 1-24. Maximum and Minimum Timings for Data Transmission
Parameter
Minimum
Maximum
tsetup
500 nsec

thold
500 nsec

tstb
500 nsec

tready
0

tbusy

500 nsec
treply


tack
500 nsec
10 us
tnbusy
0

tnext
0

ttout*

120 nsec
ttin**

200 nsec
Notes:
* Rise and fall time of output signals.
** Rise and fall time of input signals.
Parallel Interface (Reverse Channel)
‰ Transmission mode
IEEE-1284 nibble mode
‰ Adaptable connector
57-30360 (Amphenol) or equivalent
‰ Synchronization
Refer to the IEEE-P1284 specification
‰ Handshaking
Refer to the IEEE-P1284 specification
‰ Signal Level
IEEE-1284 level 1 device
TTL compatible
‰ Data transmission timing
Refer to the IEEE-1284 specification
EPSON FX-880/FX-1180 Service Manual
1-17
Product Description
Table 1-25. Pin Assignments for Reverse Channel
Pin
Signal
Return
GND Pin
In/Out*
Functional Description
1
HostClk
19
In
Host clock signal
2 to 9
DATA1∼8
20 to 27
In
Parallel input data to the printer
10
PtrClk
28
Out
Printer clock signal
11
PtrBusy, DataBit-3,7
29
Out
Printer busy signal and reverse channel transfer
data bit 3 or 7
12
AckDataReq,
DataBit-2, 6
28
Out
Acknowledge data request signal and reverse
channel transfer data bit 2 or 6
13
Xflag, DataBit-1, 5
28
Out
X-flag signal and reverse channel transfer data
bit 1 or 5
14
HostBusy
30
In
Host busy signal
31
/INIT
30
In
Not used
32
/Data Avail,
DataBit-0, 4
29
Out
Data available signal and reverse channel
transfer data bit 0 or 4
36
1284-Active
30
In
1284 active signal
18
Logic-H

Out
This line is pulled up to + 5 V through 3.3K Ω
resistor.
35
+5 V

Out
This line is pulled up to +5 V through 1.0K Ω
resistor
17
Chassis


Chassis GND
16, 33,
19-30
GND


Signal GND
15, 34
NC


Not connected
Note:
* In/Out refers to the direction of signal flow from the printer’s point of view.
Interfaces
The FX-880 and FX-1180 include one built-in parallel interface card and one built-in card slot. The card
slot accepts a variety of Type-B optional interface cards, as indicated by the table below.
Table 1-26. Type B Optional Interface Cards
1-18
Catalog Number
Interface
C823051
Serial interface card
C823071
32 KB intelligent serial interface card
C823141
Coax interface card
C823151
Twinax interface card
C823572
Ethernet interface card
C823452
Parallel interface card
C823121
LocalTalk interface card
EPSON FX-880/FX-1180 Service Manual
Product Description
Interface Selection
The printer selects the interface automatically, unless the user manually overrides it.
‰ Manual selection
The user can override automatic selection by selecting either the built-in parallel or the optional Type-B
interface in the default setting mode. (See “Control Panel Operation” later in this chapter.)
‰ Automatic selection
Normally, interface selection is automatic. (This is the factory-set default, but it can be changed in the
default settings.) With automatic selection enabled, the printer initializes to the idle state and scans its
interfaces. When the printer receives data, the interface that receives the data first is selected. As long
as the host continues sending data or the printer interface is busy, the selected interface remains active.
When the host stops transferring data and the printer sits in standby for the number of seconds specified
in the default settings, the printer returns to the idle state and the interface is de-activated.
‰ Interface state and interface selection
When the printer is initialized or returns to the idle state after printing, three things happen:
■
■
■
The parallel interface goes into the ready state.
If an optional interface card is installed, the printer sends it an enable command.
If a serial interface card is installed, it sends an XON code and sets the DTR signal to SPACE.
When an interface is not selected, various things can happen:
■
■
■
When the parallel interface is not selected, it goes into a busy state.
When an optional interface card is installed and not selected, the printer sends a disable
command to the optional interface.
When the Type-B serial interface card is installed and it is not selected, the interface sends an
XOFF code and sets the DTR signal to MARK.
Interrupt signals, such as the INIT signal for the parallel interface, are not effective unless the interface to
which it is directed is selected.
Preventing Data Transfer Timeout in the Host
Generally, a host abandons data transfer to a peripheral when the peripheral is in the busy state for a
period of 30 seconds or more, depending on the default settings of the host. To prevent time-out in the
host, the printer begins receiving data more slowly after the input buffer has received several hundred
bytes of data. Data transfer may then slow to as little as a few bytes per minute, with the printer
registering a busy state only if the input buffer fills completely.
EPSON FX-880/FX-1180 Service Manual
1-19
Product Description
Control Panel Operation
This section tells how to use the FX-880 and FX-1180 control panel.
Control Panel
The printer control panel contains four non-lock-type pushbuttons and one lock-type power button, as well
as various LEDs to report on printer functions.
Font
Draft
Draft Condensed
Roman
Roman Condensed
Sans serif
Sans serif Condensed
Tear Off/Bin
LF/FF
Load/Eject
Pause
Tear off
Bin 1
Bin 2
Paper Out
Operate
Micro Adjust
3sec
Figure 1-8. Control Panel
Overview of Functions
You can use the control panel to access a variety of printer functions; some of these functions are
accessible only when the printer is in certain states, as explained below.
Operation in Normal Mode
During normal operation, the panel buttons perform the functions shown below.
Table 1-27. Operation in Normal Mode
Buttons
Function
Operate
ƒ Turns the printer on and off.
Pause
ƒ Alternates between printing and non-printing states.
ƒ Activates the micro-adjust and font selection functions if
held down for more than 3 seconds while the printer is
not printing (buffer is empty); pressing it again turns
these functions off.
Load/Eject
ƒ Loads or ejects paper.
ƒ Micro feeds forward, when the micro-adjust function is
enabled.
1-20
EPSON FX-880/FX-1180 Service Manual
Product Description
LF/FF
ƒ Performs a line feed if pressed momentarily.
ƒ Performs a form feed if held down continously.
ƒ Micro feeds backward, when the micro-adjust function is
enabled.
Tear Off/Bin
ƒ Advances continuous-feed paper to the tear-off position;
if pressed again, repositions the paper to top-of-form
(TOF).
ƒ Selects CSF bin 1 or CSF bin 2.
Operation at Power-On
To access these functions, the button indicated below must be pressed while turning on the printer.
Table 1-28. Operation at Power On
Buttons
Function
Load/Eject
Performs a self-test in NLQ mode.
LF/FF
Performs a self-test in draft mode.
Load/Eject + LF/FF
Performs a data dump.
Pause + Tear Off/Bin
Clears the line counter (a value stored in the EEPROM,
used to indicate ribbon life).
Pause
Performs a bidirectional adjustment.
Tear Off/Bin
Activates the Mode 1 default setting function.
Tear Off/Bin + LF/FF
Activates the Mode 2 default setting function.
Operation in the Default Setting Mode
When the printer is in the default setting mode, the panel buttons perform the functions shown below.
Table 1-29. Operation in Default Setting Mode
Buttons
Function
Tear Off/Bin
Selects the setting to be adjusted from a printed menu.
Load/Eject
Changes the setting’s value.
EPSON FX-880/FX-1180 Service Manual
1-21
Product Description
Details of Selected Functions
This section explains how to use several of the more complex functions.
Micro-Adjust Function
The micro-adjust function lets you set the top of form (TOF) and tear-off positions for your paper. Which
position you adjust depends on whether the paper is in the TOF or the tear-off position when you make the
adjustment. Adjustments can be made in increments of 1/216 inch. Use the Load/Eject button to move
the paper up, and the LF/FF button to move it down.
You can activate the micro-adjust function by pressing the Pause button for at least 3 seconds when:
‰ The data buffer is empty and the printer is on-line.
‰ The paper is at the TOF or tear-off position.
When you press the Pause button again, the printer exits micro-adjust mode and the new position is
automatically saved to the EEPROM so that the setting is not cleared if the printer is turned off.
Tear-off Function
The tear-off function advances continuous paper to the tear-off position. There are two modes for this
function: auto tear-off and manual tear-off. You can select the tear-off mode in the default settings,
explained later in this chapter.
Auto tear-off
In auto tear-off mode, the printer automatically advances the paper to the tear-off position when it has
finished printing. After you tear the paper off at the perforation, the paper feeds back to the TOF position
when a new print job is sent to the printer. The auto tear-off function is activated when:
‰ Auto tear-off has been set to ON in the default settings.
‰ The release lever has been set to one of the tractor positions.
‰ The data buffer is empty and the printer is on-line.
‰ More than 3 seconds have passed since the host computer finished transferring print data.
Manual tear-off
In manual tear-off mode, you must press the Tear Off/Bin button to advance the paper to the tear-off
position. Pressing the button again returns the paper to TOF. The manual tear-off function can be
activated if:
‰ Auto tear-off has been set to OFF in the default settings.
‰ The release lever has been set to one of the tractor positions.
‰ The printer is off-line; or, if the printer is on-line, the data buffer is empty.
1-22
EPSON FX-880/FX-1180 Service Manual
Product Description
Paper handling when in the tear-off mode
‰ If you press the Pause button with the printer off-line, the printer feeds the paper back to the TOF
position for the next page and brings the printer back on-line.
‰ If you press the Pause button with the printer on-line, the printer feeds the paper back to the TOF
position for the next page and takes the printer off-line.
‰ Pressing the LF/FF button feeds the paper back to the TOF position for the next page and executes a
line feed.
‰ Pressing the Load/Eject button feeds the paper back to the TOF position for the next page and ejects
paper backward.
‰ If the printer is turned off while in the tear-off mode, the tear-off position is saved, and paper is fed
back to the TOF position for the next page when you turn the printer on again.
Changing the Default Settings
Default settings are special settings stored in the printer’s EEPROM which remain active even after
turning off the printer. The FX-880 and FX-1180 both have two default setting modes. You can change
different printer settings in each of these modes.
When you enter the default setting mode, the printer prints out instructions for changing the settings, as
well as a menu of options. In general, you use the Tear Off/Bin button to select from the printed menu the
setting you wish to change, and the Load/Eject button to change the value of the setting. In addition to
these buttons, you use four LEDs: the Font and TearOff/Bin LEDs to follow your menu selections, and the
Pause and Paper Out LEDs to see the current settings.
Default Settings (Mode 1)
Refer to the following flowchart and its accompanying table to adjust the default settings in mode 1.
START
Hold down the Tear off/Bin
switch and turn on the printer.
Push the Tear off/Bin switch
to select the default setting
you wish to change.
The language selection menu
prints.
Push the Load /Eject switch
to change the setting's value.
YES
Change the language?
Push the Load/Eject switch to
select a different language.
NO
NO
Finished?
YES
Push the Tear off/Bin switch.
The default settings menu and
selection guide are printed.
Turn the printer off to save the
settings.
END
Figure 1-9. Changing Default Settings (Mode 1)
EPSON FX-880/FX-1180 Service Manual
1-23
Product Description
Note that in the following table, factory settings are shown in bold.
Table 1-30. Default Settings (Mode 1)
Item
Setting/Value
Skip over perforation
On, Off
Auto tear off
On, Off
Auto line feed
On, Off
Print Direction
Bi-d, Uni-d
I/F mode
Auto, Built-in Parallel, Optional Type-B
Auto I/F wait time
10 sec, 30 sec
Software
ESC/P, IBM 2380/2381 Plus
0 slash
O, Ø
High speed draft
On, Off
Input buffer
On, Off
Beeper
On, Off
Auto CR*
On, Off
I.B.M. character table*
table 2, table 1
Note:
* Auto CR and I.B.M. character table are available only when IBM 2380/2381 Plus emulation is selected.
Default Settings (Mode 2)
Refer to the following flowchart and its accompanying table to adjust the default settings in mode 2.
START
Hold down the Tear off/Bin and LF/FF
switches and turn on the printer.
Push the Tear off/Bin switch
to select the default setting
you wish to change.
The language selection menu
prints.
Push the Load /Eject switch
to change the setting's value.
YES
Change the language?
Push the Load/Eject switch to
select a different language.
NO
NO
Finished?
YES
Push the Tear off/Bin switch.
The default settings menu and
selection guide are printed.
Turn the printer off to save the
settings.
END
Figure 1-10. Changing Default Settings (Mode 2)
1-24
EPSON FX-880/FX-1180 Service Manual
Product Description
Note that in the following table, factory settings are shown in bold.
Table 1-31. Default Settings (Mode 2)
Item
Setting/Value
Page length for front tractor
3 inch, 3.5 inch, 4 inch, 5.5 inch, 6 inch, 7 inch, 8 inch, 8.5 inch,
11 inch, 70/6 inch, 12 inch, 14 inch, 17 inch
Page length for rear tractor
3 inch, 3.5 inch, 4 inch, 5.5 inch, 6 inch, 7 inch, 8 inch, 8.5 inch,
11 inch, 70/6 inch, 12 inch, 14 inch, 17 inch
Character tables
Italic, PC437, PC850, PC860, PC863, PC865, PC861, BRASCII,
Abicomp, ISO Latin 1, Roman 8
NLSP version:
Italic, PC437, PC437 (Greek), PC774, PC850, PC852, PC853,
PC855, PC857, PC866, PC866 (Latin), PC866 (UKR), PC869, ISO
Latin 1T, MAZOWIA, Code MJK, Bulgaria, Estonia, ISO 8859-2, ISO
8859-7
International character sets for
Italic table *
Italic U.S.A, Italic France, Italic Germany, Italic U.K., Italic
Denmark 1, Italic Sweden, Italic Italy, Italic Spain 1
Note:
* The options available for this setting vary by country.
Restoring Factory-Set Defaults
You can return all settings to their factory defaults by pressing the Tear Off/Bin and Load/Eject buttons
while turning on the printer.
Bidirectional Adjustment Function
The bidirectional adjustment function allows you to adjust alignment at the following print speeds:
‰ High-speed draft mode
‰ Draft mode
‰ NLQ mode
The bidirectional adjustment can be performed either with a stand-alone printer, or using the adjustment
program with a host computer connected to the printer. With a stand-alone printer, enter the bidirectional
adjustment mode by pressing the Pause button while turning on the printer; the flowchart on the next page
outlines this procedure.
EPSON FX-880/FX-1180 Service Manual
1-25
Product Description
To perform the adjustment with a host computer, see Chapter 4, Adjustments.
START
Hold down the Pause switch
and turn on the printer.
An instruction guide prints.
The first alignment pattern prints, consisting
of 25 numbered rows of sample output.
Note: Each time you go through this cycle, you adjust
alignment at a different print speed, as follows:
1. High-speed draft mode
2. Draft mode
3. NLQ mode
Finished?
YES
NO
Turn the printer off to save the
settings.
Follow the printed instruction guide to select the
most closely aligned pattern. Load/Eject selects a
higher-numbered print pattern, and LF/FF selects a
lower-numbered one.
END
Finalize your selection by pressing the
Tear Off/Bin switch, and the next
alignment pattern prints.
Figure 1-11. Bidirectional Adjustment
1-26
EPSON FX-880/FX-1180 Service Manual
Product Description
Printer States and Error Reporting
This section describes various printer states and how the printer uses its beeper and LED indicators to
report errors.
Initialization
Hardware Initialization
Initialization occurs when the printer is turned on or when the printer receives an /INIT signal (negative
pulse) or cold-reset command (remote RS command). Initialization does the following:
‰ Initializes the printer mechanism.
‰ Clears all data in the buffers.
‰ Cancels downloaded character definition.
‰ Places the printer in standby state, if no errors occur.
‰ Executes software initialization (see below).
Software Initialization
The control code ESC @ also initializes the printer. This initialization
‰ Clears all unprinted data from the buffers.
‰ Resets all printer settings to their default values.
Error Conditions
If any of the following occurs, the printer reports an error and automatically goes off-line:
‰ Paper out, paper jam, or paper eject error
‰ Release lever operation error (detected when the position of the release lever does not match the
paper path)
‰ Carriage control, power supply voltage, or CG access error
EPSON FX-880/FX-1180 Service Manual
1-27
Product Description
Conditions Indicated by the LEDs and Beeper
The following table shows how to interpret the printer’s indicators.
Table 1-32. Beeper and LED Indicators
Pause
Paper Out
Tear off/Bin
Condensed
Font
Beeper
Pause
On





Paper Out
On
On



❍❍❍
Paper Jam
On
Blinks



●●●●●
Paper Eject
Error
On
Blinks



❍❍❍
Head Hot
Blinks
Blinks




Micro-adjust
Blinks





Tear Off


*1



Bin Selection


*1



Font Selection




*2

Fatal Error
Blinks
Blinks
Blinks
Blinks
Blinks

Release Lever
Operation
Error
On




●●●●●
Illegal
Operation





❍
Notes:
*1 The Tear Off/Bin LED is ON when bin 1 is selected, and OFF when bin 2 is selected. The LED blinks
when continuous paper is in the tear-off position.
*2 The two font LEDs display the selected font.
❍ Indicates a beep lasting 100 ms followed by 100 ms of silence.
●
Indicates a beep lasting 500 ms followed by 100 ms of silence.
 Indicates that the LED or beeper is not used to indicate this condition.
1-28
EPSON FX-880/FX-1180 Service Manual
Product Description
Main Components
The main components of the FX-880 and FX-1180 are designed for easy removal and repair. The main
components include the following:
‰ C229 MAIN Board Assembly
‰ C229 PSB/PSE/PSH Board Assembly
‰ C229 PNL Board Assembly
‰ Printer Mechanism (M-3J10)
‰ Housing Assembly
Upper Housing
C229 PNL
Control Panel
Printer Mechanism
C229 PSB/PSE/PSH
Power Supply
Lower Housing
C229 MAIN
Board Assembly
Figure 1-12. Main Components.
EPSON FX-880/FX-1180 Service Manual
1-29
2. Operating Principles
Printer Mechanism Operation .................................................................................................................... 2-1
Printhead ........................................................................................................................................... 2-2
Carriage Unit ..................................................................................................................................... 2-4
Paper Handling Mechanisms ............................................................................................................ 2-4
Paper Paths........................................................................................................................... 2-5
Ribbon Advance Mechanism............................................................................................................. 2-9
Platen Gap Adjustment Mechanism .................................................................................................2-11
Paper Feed Motor.............................................................................................................................2-11
Circuit Operation...................................................................................................................................... 2-12
Power Supply – Circuit Types.......................................................................................................... 2-12
Power Supply Operation...................................................................................................... 2-12
Control Circuit.................................................................................................................................. 2-14
EPSON FX-880/FX-1180 Service Manual
2-i
Operating Principles
2-ii
EPSON FX-880/FX-1180 Service Manual
Operating Principles
Printer Mechanism Operation
This section describes the FX-1180 and FX-880 printer mechanism, which features a 9-pin serial impact
dot matrix printhead. The printer mechanism consists of the following parts:
‰
‰
‰
‰
‰
‰
‰
‰
Printhead
Carriage unit
Paper handling mechanisms
Ribbon advance mechanism
Platen gap adjustment mechanism
Paper feed (PF) motor
Carriage (CR) motor
Sensors
EPSON FX-880/FX-1180 Service Manual
2-1
Operating Principles
Tractor
Release Lever
Rear PE Sensor
PF Motor
Platen Roller
Front PE Sensor
Printhead
Parallelism Bushing
Release Sensor
CR Guide Shaft
Parallelism Bushing
CR Motor
Carriage Unit
Ribbon Feed Mechanism
Timing Belt
HP Sensor
PG Adjust Lever
Figure 1. Printer Mechanism
Printhead
The printhead transfers ink to the printed page by means of 9 wires which strike the ink ribbon as the
printhead travels across the page. Each wire has its own drive coil that is actuated by a separate signal
from the printhead drive circuitry. Figure 2 depicts one of the nine independent drive coil mechanisms.
2-2
EPSON FX-880/FX-1180 Service Manual
Operating Principles
As shown in the diagram below, the head driving coil, when energized, pulls against the actuating plate.
This thrusts the dot wire against the ink ribbon and creates a printed dot. (The ribbon mask prevents the
ribbon from smudging the paper as the printhead moves back and forth across the page.)
After striking the ink ribbon, the driving coil is shut off and the dot wire returns to its original position. This
is accomplished by the wire resetting spring, which is aided by the rebound action of the dot wire hitting
the platen.
Since the printhead heats up after a period of use, it is equipped with a thermistor to detect head
temperature. Voltage changes reflecting changes in the thermistor’s resistance are output to the CPU.
Should the printhead overheat, the CPU detects this and automatically stops printing until the printhead
cools.
Pivot
Figure 2. Printhead Drive Coil Mechanism
EPSON FX-880/FX-1180 Service Manual
2-3
Operating Principles
Carriage Unit
The carriage unit transports the printhead back and forth across the printed page. It is driven by the
carriage (CR) motor—a stepper motor—via the timing belt, which connects to the underside of the
carriage. The carriage slides along the carriage guide shaft, which maintains the printhead’s horizontal
alignment with the platen, while the base frame provides further support and maintains the printhead’s
vertical alignment. The home position (HP) sensor detects the home position of the carriage at power-on
and when the CR motor changes direction.
Carriage Guide Shaft
Figure 3. Carriage Unit
Paper Handling Mechanisms
Cut sheets are fed by friction. Continuous paper is fed by tractor. There are three ways to feed paper with
tractors: the push tractor method, the pull tractor method, and the push-pull tractor method. During normal
operation, the printer is set up with only one tractor, which functions as either a push or pull tractor,
depending on where it is attached on the printer. To use the push-pull tractor feed method, an optional
tractor must be attached.
The paper release lever is used to switch PF motor torque between cut sheet (friction) feeding and
continuous paper (tractor) feeding. In addition, the paper release sensor detects the release lever’s
setting position. This lets the main logic board know what type of paper is loaded and how many lines to
print per page. (Cut sheets print at 61 lines per page, while continuous paper prints at 66 lines per page.)
2-4
EPSON FX-880/FX-1180 Service Manual
Operating Principles
Paper Paths
Different kinds of paper feed through the printer in different ways. The paths different kinds of paper
follow are divided into four groups, depending on the entrance the paper is fed from (front, rear, bottom, or
top).
‰
Top Entrance
The following figure shows the paper path for friction feeding using the top entrance. The top entrance is
used only for the friction feed method. When the top entrance is used, the rear PE sensor senses when
paper is out.
Figure 4. Paper Path for Friction Feeding Using the Top Entrance
‰
Rear Entrance
Figures 5, 6, and 7 show the paper paths for tractor feeding using the rear entrance. The rear entrance
can be used for any of the following paper feed methods: push tractor feed, pull tractor feed, or push-pull
tractor feed. When the rear entrance is used, the rear PE sensor senses when paper is out.
Figure 5. Paper Path for Push Tractor Feeding Using the Rear Entrance
EPSON FX-880/FX-1180 Service Manual
2-5
Operating Principles
Figure 6. Paper Path for Pull Tractor Feeding Using the Rear Entrance
Figure 7. Paper Path for Push-Pull Tractor Feeding Using the Rear Entrance
2-6
EPSON FX-880/FX-1180 Service Manual
Operating Principles
‰
Bottom Entrance
The following figure shows the paper path for tractor feeding using the bottom entrance. The bottom
entrance is used only for pull tractor feeding. When the bottom entrance is used, the front PE sensor
senses when paper is out.
Figure 8. Paper Path for Pull Tractor Feeding Using the Bottom Entrance
‰
Front Entrance
Figures 9 through 12 show the paper paths for the front entrance. The front entrance can be used with any
of the following paper feed methods: friction feed, push tractor feed, pull tractor feed, or push-pull tractor
feed. When the front entrance is used, the front PE sensor senses when paper is out.
Figure 9. Paper Path for Friction Feeding Using the Front Entrance
EPSON FX-880/FX-1180 Service Manual
2-7
Operating Principles
Figure 10. Paper Path for Push Tractor Feeding Using the Front Entrance
Figure 11. Paper Path for Pull Tractor Feeding Using the Front Entrance
2-8
EPSON FX-880/FX-1180 Service Manual
Operating Principles
Figure 12. Paper Path for Push-Pull Tractor Feeding Using the Front Entrance
‰
Summary of Paper Paths
The various paper paths diagrammed above are summarized below in tabular form:
Table 1. Possible Combinations of Feed Methods and Paper Entrances
Feed Method
Paper Entrance
Top
Rear
Front
Bottom
Friction
Yes
No
Yes
No
Push tractor
No
Yes
Yes
No
Pull tractor
No
Yes
Yes
Yes
Push-pull tractor
No
Yes
Yes
No
Ribbon Advance Mechanism
The ribbon advance mechanism is driven by the same timing belt that moves the printhead back and forth
across the printed page. To make the ribbon feed in one direction only, the timing belt connects to a
specially designed gear linkage which always turns the ribbon advance roller counterclockwise, no matter
which direction the printhead is moving.
EPSON FX-880/FX-1180 Service Manual
2-9
Operating Principles
In the figure below, black arrows indicate directional movement when the printhead carriage travels left to
right. In this case, motion transfers through the gear linkage as follows:
Belt Pulley → Sun Gear → Planet Gear → Gear 1 → Ribbon Driving Gear
Note that the belt pulley and the sun gear are on the same axle and rotate together as a unit.
When the printhead carriage changes direction, the planet gear, which pivots on the planet gear lever,
disengages from gear1, swings over, and engages with gear 2. Motion then continues to pass through
gear 3 and on to the ribbon driving gear. In this way, the ribbon driving gear always turns counterclockwise, no matter which direction the printhead is moving.
Belt Pulley
Planet Gear
Sun Gear
Gear 1
Gear 3
Gear 2
Planet Gear Lever
Figure 13. Ribbon Advance Mechanism
The ribbon cartridge itself contains several mechanisms to ensure proper guidance of the ribbon. At the
entrance slot, a pressure roller clamps the ribbon against the advance roller, enabling the advance roller to
“grab” the ribbon and draw it in. The ribbon brake spring, attached to the exit slot of the cartridge case,
prevents slack in the ribbon and keeps its tension at a constant level. Finally, the ribbon mask prevents
the ribbon from brushing against the paper.
2-10
EPSON FX-880/FX-1180 Service Manual
Operating Principles
Platen Gap Adjustment Mechanism
The platen gap (the gap between the platen and the printhead) can be adjusted to allow the printer to use
paper of different weights or thicknesses. When the platen gap adjust lever is moved forward or
backward, the carriage guide shaft rotates. Because the carriage guideshaft is eccentric at the ends, this
rotation moves the carriage either toward or away from the platen, and changes the platen gap. The
platen gap (PG) sensor detects the position of the adjust lever. The correct platen gap is 0.38 mm ± 0.02
mm with the adjust lever set to position 0. If the lever is set to position 2 (the 5th slot from the top) or
higher, the printer goes into copy mode.
Figure 14. Platen Gap Adjustment Mechanism
Paper Feed Motor
The paper feed (PF) motor advances the paper at minimum increments of 1/216 inch. This motor is a 2-2
phase, constant-voltage stepper motor. CPU ports P70 to P73 generate phase signals to drive the motor.
PFA to PFB are turned on or off within the µPA1476H (IC1), depending on the phase data sent from the
CPU.
When pin A19 of the CPU goes HIGH, D1 outputs +35 volts to hold the motor stationary.
EPSON FX-880/FX-1180 Service Manual
2-11
Operating Principles
Circuit Operation
Power Supply – Circuit Types
The FX-1180 and FX-880 printers can be powered by any of three power supply boards: the C229 PSB
board (120 V), the C229 PSE board (230 V), or the C229 PSH board (UPS). The output of these boards
supplies the DC current necessary to drive the printer control circuits and the printer drive mechanism.
Though all three boards provide the same output, their primary circuitry differs.
The input voltages and fuse ratings for these boards are shown in the following table.
Table 2. Power Supply Boards
Board
Input Voltage
Input Frequency Range
Fuse F1 Rating
C229 PSB
85 to 138 VAC
49.5 to 60.5 Hz
4 A / 125 V, 250 V
C229 PSE
187 to 276 VAC
49.5 to 60.5 Hz
T2.0 A / 250 V
C229 PSH
85 to 276 VAC
49.5 to 60.5 Hz
T4.0 A / 250 V
Power Supply Operation
The table below describes the two power supply output voltages and lists their applications.
Table 3. Power Supply Output Voltages and Applications
Output Voltage (DC)
Rated Output Current
Applications
+5 V ± 5%
0.7 A
❏
Main control board
logic circuitry
❏
Sensors
❏
Control panel LEDs
❏
Printhead drive
❏
CR motor drive
❏
PF motor drive
+35 V ± 6%
0.8 A
The power supply circuit consists of a line filter, a ZC-RCC (Zero-Cross Ringing Choke Converter)
switching circuit, and a 5 V chopper regulator IC. When AC power enters the printer from an external
power source, the line filter circuit removes high-frequency noise. The AC voltage then undergoes full
wave rectification and is smoothed to produce direct current. The voltage is then fed through the
switching circuit and a secondary smoothing circuit to produce a stepped down +35 VDC voltage;
feedback ensures stable output. A second, additional output at +5 VDC is produced by a chopper
regulator IC which draws from the 35 V supply.
2-12
EPSON FX-880/FX-1180 Service Manual
Operating Principles
To protect the printer, the power supply board incorporates over-voltage and over-current protection
circuitry. If the 5 V supply exceeds +7 VDC, or if the 35 V supply exceeds +36 VDC, the operation of the
ZC-RCC switching circuit is immediately stopped, and its output falls to zero. In addition, a voltage drop
protection circuit protects the printer in case of a short circuit in any component that draws from the +35
VDC line. If a voltage drop is detected, this also stops the operation of the ZC-RCC. Fuse F1 protects the
power supply itself.
Normally, the printer is turned on and off using the Operate switch on the front control panel. When the
printer is turned off, the switching circuit is de-energized and output at +35 VDC stops. However, since
the Operate switch is in the secondary circuitry, current continues to flow in the primary circuitry as long as
the printer remains plugged in. Therefore, you should unplug the printer from the external AC power
source before performing maintenance.
The following figure shows the power supply circuitry in block diagram form.
AC input
Line Filter
ZC-RCC Switching
R Overcurrent
l
i
Overvoltage
i
+35 VDC
Regulator IC
Regulator
IC
+5VDC
PSC
Figure 15. Power Supply Circuit Block Diagram
F u s e
S w itc h in g F E T
P h o to - c o u p le r
T ra n s fo rm e r
R e g u la to r IC
C N 1
C N 2
D io d e B r id g e
Figure 16. Power Supply Board Component Layout (C229 PSB/PSE/PSH)
EPSON FX-880/FX-1180 Service Manual
2-13
Operating Principles
Control Circuit
The C229 MAIN board is the control circuit board for the FX-1180 and FX-880. The control circuit includes
a TM96C141AF CPU that runs at 14.47 MHz, an E05B50 gate array that contains various memory
management functions, a reset IC, EEPROM, etc. The table below shows the functions of the main board
components.
Table 4. MAIN Board Components and Functions
Component
Address
Function
TMP96C141AF
IC3
CPU; controls the C229 main board. It performs the
functions below:
E05B50
IC2
❏
Receives data from the host computer and loads it to
the input buffer in RAM
❏
Expands the input data held in the buffer to create
image data
❏
Loads the image data to the image buffer in RAM
❏
Transfers the image data to the printhead drive circuit
❏
Controls various printer mechanism parts, such as
motors.
Gate array; performs the functions below:
❏
Controls the printhead
❏
Controls the parallel and optional type B interface
❏
Controls the control panel
❏
Controls the PF motor and changes over the CR motor
current
PST594E
IC1
Reset IC for performing a system reset.
AT93C46
IC4
EEPROM, used to store information such as top-of-form
position.
PSRAM
IC5
The PSRAM contains the CPU working area and
buffers.
ROM
IC7
2/4 MB EEPROM and Mask ROM.
SLA7024M
IC8
Driver circuit for the carriage return (CR) motor.
A2917SEB
IC11
Driver circuit for the paper feed (PF) motor.
Comparator
IC12
Power-off signal sensing.
2-14
EPSON FX-880/FX-1180 Service Manual
Operating Principles
The following illustration shows the control circuits in block diagram form.
Printhead
Thermistor
CG
PSRAM
ROM
Printhead
Driver
PG Sensor
Control Panel
Address Data Bus
Rear PE
Sensor
Parallel I/F
G.A.
E05B50
(IC2)
Reset IC
CPU
TMP96C141AF
(IC3)
Front PE
Sensor
EEPROM
Type B I/F
(Optional)
HP Sensor
PF Motor
Driver
CR Motor
Driver
Release Lever
Sensor
35 V Sensor
Figure 17. Control Circuit Block Diagram
EPSON FX-880/FX-1180 Service Manual
2-15
Operating Principles
Data from the host computer is first stored in the printer’s input buffer. The printer then converts it into
image data, stores it in the image buffer, and then transfers it to the printhead via the gate array. This is
shown in the diagram below:
H o s t c o m p u te r
In p u t b u ffe r
P r in t d a ta
c o n v e r s io n
Im a g e b u ffe r
Im a g e d a ta
tra n s fe r
R A M
C P U
D a ta la tc h
a n d
d a ta o u tp u t
P r in th e a d d r iv e r
c ir c u it
G a te a rra y
Figure 18. Data Flow
PF Motor Driver IC
CR Motor Drive IC
Gate array
E05B50
CN3
PSRAM
Print Head Driver
CPU
PROM
EEPROM
Figure 19. MAIN Board Component Layout (C229)
2-16
EPSON FX-880/FX-1180 Service Manual
3. Disassembly and Assembly
Overview................................................................................................................................................. 3-1
Printer Disassembly Precautions .................................................................................................. 3-1
Tools.............................................................................................................................................. 3-2
Service Checks after Repair ......................................................................................................... 3-3
Screw Specifications..................................................................................................................... 3-4
Printer Disassembly and Assembly........................................................................................................ 3-5
Printhead Removal ....................................................................................................................... 3-6
HP (Home Position) Sensor Removal .......................................................................................... 3-7
Disassembly Preparation .............................................................................................................. 3-8
Upper Housing Removal............................................................................................................... 3-9
C229 Main Board Removal......................................................................................................... 3-11
C229 PSB/PSE Board Removal ................................................................................................. 3-13
ROM Removal ............................................................................................................................ 3-14
Platen Removal........................................................................................................................... 3-15
Printer Mechanism Removal....................................................................................................... 3-17
Printer Mechanism Disassembly................................................................................................. 3-19
CR Motor Removal ........................................................................................................ 3-19
PF Motor Removal ......................................................................................................... 3-21
PF Gear Train Disassembly........................................................................................... 3-22
PG (Platen Gap) Sensor Removal................................................................................. 3-24
Release Lever Sensor Removal .................................................................................... 3-25
Front PE (Paper End) Sensor Removal......................................................................... 3-26
Rear PE Sensor Removal.............................................................................................. 3-27
Carriage Removal .......................................................................................................... 3-28
Rear Paper Guide Removal........................................................................................... 3-30
Ribbon Drive Removal ................................................................................................... 3-32
ESPON FX-880/FX-1180 Service Manual
3-i
Disassembly and Assembly
3-ii
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Overview
This chapter describes procedures for disassembling the EPSON FX-880 and FX-1180. Unless otherwise
specified, you can assemble the components by reversing the disassembly procedures.
Printer Disassembly Precautions
When working on the EPSON FX-880 or FX-1180, follow the warnings and cautions below.
WARNING
■
Disconnect the power cable before opening the printer case.
■
Do not open the printer for at least five minutes after disconnecting the power cable to allow the
electrolytic capacitor to discharge completely.
■
Never touch primary parts of the power supply unit (including the heat sink) while the power
supply cable is connected to the power socket. The heat sink is not electrically isolated.
■
Don’t touch the heat sink even after power has been disconnected, as it may be very hot.
■
Don’t touch the printhead after printing, as it may be very hot.
CAUTION
■
Use only recommended tools for maintenance work.
■
Use only recommended lubricants and adhesives. (See Chapter 6.)
■
Always follow the instructions in this manual when you perform any adjustment on the printer.
(See Chapter 4.)
ESPON FX-880/FX-1180 Service Manual
3-1
Disassembly and Assembly
Tools
Table 3-1 lists the required tools for disassembling, assembling, or adjusting the printer. Use only the
specified tools to avoid damaging the printer.
Table 3-1. Required Tools
Name
Availability
EPSON Part No.
Phillips screwdriver (no. 2)
Commercially available
B743800200
Phillips screwdriver (no. 1)
Commercially available
B743800100
Hexagonal box driver (7 mm diagonal)
Commercially available
B741700200
Tweezers
Commercially available
B741000100
Round-nose pliers
Commercially available
B740400100
E-ring holder #6
Commercially available
B740800800
Soldering Iron
Commercially available
B740200100
Thickness gauge (t=0.42 mm)
Commercially available
B776702201
Multimeter
Commercially available

Oscilloscope (50 MHz min.)
Commercially available

Extractor (for removing rivet in PSB)
EPSON part
EXTRACTOR
Note:
An oscilloscope is required only for making repairs at the component level.
3-2
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Service Checks after Repair
Before returning the printer after service, use the check list in Table 3-2, which provides a record to make
servicing and shipping more efficient.
Table 3-2. Inspection Check List for the Repaired Printer
Category
Component
Item to Check
Status
Printer
mechanism
Printhead
Are any wires broken?
†Checked †Not necessary
Are any wires worn out?
†Checked †Not necessary
Does the carriage move smoothly?
†Checked †Not necessary
Carriage
mechanism
Paper
advance
mechanism
† Movement noisy? † Mechanism
dirty? † Mechanism oily?
Is the CR motor at the correct
temperature (not overheating)?
†Checked †Not necessary
Is paper advancing smoothly?
†Checked †Not necessary
† Movement noisy? † Mechanism
dirty? † Mechanism oily? † Paper
jamming?
Is the paper feed motor running at the
correct temperature (not
overheating)?
†Checked †Not necessary
Is the type of paper in the printer
feeding smoothly?
†Checked †Not necessary
Is the tractor feeding the paper
correctly?
†Checked †Not necessary
Is the paper path clear of all
obstructions?
†Checked †Not necessary
Is the platen free of damage?
†Checked †Not necessary
Ribbon mask
Is the ribbon mask free of distortion?
†Checked †Not necessary
Self-test
Was the self-test successful?
†Checked †Not necessary
On-line test
Was the on-line test successful?
†Checked †Not necessary
Platen gap
Is the platen gap adjusted correctly?
†Checked †Not necessary
Bi-D
adjustment
Is the bi-directional print position
adjusted correctly?
†Checked †Not necessary
Firmware
ROM chip
Check that the printer has the latest
ROM version.
†Checked †Not necessary
Packing
Ribbon
cartridge
Has the ribbon been removed?
†Checked †Not necessary
Attachments
and
accessories
Have all the printer’s attachments and
accessories been included in the
package?
†Checked †Not necessary
Paper path
Operation
Adjustments
ESPON FX-880/FX-1180 Service Manual
3-3
Disassembly and Assembly
Screw Specifications
Table 3-3 lists the abbreviations used in the following pages for small parts, such as screws and washers.
Table 3-3. Screw Types and Abbreviations (I)
Abbreviation
Description
CB
Cross Bind-head screw
CBS
Cross Bind-head S-tight screw
CBB
Cross Bind-head B-tight screw
CBP
Cross Bind-head P-tight screw
CP
Cross Pan-head screw
CB(O)
Cross Bind-head screw with outer toothed lock
washer
Table 3-4. Screw Types and Abbreviations (II)
Head
Body
Washer
Bind-head
S-tight
Outer toothed lock
washer
Pan-head
B-tight
P-tight
3-4
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Printer Disassembly and Assembly
This section provides disassembly procedures. The basic order for disassembly is shown in the flowchart
below. Exploded diagrams are also provided in the Appendix. Refer to the Appendix if necessary to see
how components fit together.
WARNING
Before disassembling any part of the printer, note the warnings in Printer Disassembly Precautions on
page 3-1.
Main Components Disassembly
Printer Mechanism Disassembly
START
START
Disassembly Preparation
Printhead Removal
Upper Housing Removal
HP Sensor Removal
Printer Mechanism
Removal
CR Motor Removal
PF Motor Removal
Carriage Removal
PF Gear Train Removal
Ribbon Drive
Removal
Rear Paper Guide
Removal
C229 Main Board
Removal
C229 PSB/PSE Board
Removal
PG Sensor
Removal
Release Sensor
Removal
Front PE Sensor
Removal
Rear PE Sensor
Removal
Platen Removal
ROM Replacemant
Figure 3-1. Disassembly Flowchart
ESPON FX-880/FX-1180 Service Manual
3-5
Disassembly and Assembly
Printhead Removal
1. Remove the top cover.
2. Remove the 2 CBS screws (M3 x 8) securing the printhead to the carriage assembly.
3. Disconnect the FFC from the printhead and remove the printhead.
WARNING
Wait for five minutes after unplugging the printer before removing the printhead; it is very hot and
needs to cool down.
CAUTION
After replacing the printhead, perform the platen gap adjustment (see Chapter 4).
CBS (M3 x 8)
Printhead
Head FFC
Figure 3-2. Printhead Removal
3-6
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
HP (Home Position) Sensor Removal
1. Remove the top cover.
2. Release the hook securing the HP sensor to the printer.
3. Disconnect the cable from the sensor and remove the sensor.
Hook
HP Sensor
Cable
Figure 3-3. HP Sensor Removal
ESPON FX-880/FX-1180 Service Manual
3-7
Disassembly and Assembly
Disassembly Preparation
1. Remove the paper guide, top cover, front cover, and knob. Remove the tractor and paper eject cover
by pushing the tabs on each end.
Paper Eject Cover
Tractor
Paper Guide
Top Cover
Knob
Front Cover
Figure 3-4. Disassembly Preparation
3-8
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Upper Housing Removal
1. Follow the disassembly preparation procedures (see page 3-8).
2. Remove the 2 CBS (M3 × 6) screws and a CBB (4 × 12) screw securing the upper housing to the
lower case. See Figure 3-5.
3. Set the release lever to the friction feed position.
4. Lift the front of the upper housing and disconnect the control panel FFC from the control panel
connector.
5. Release the 2 hooks securing the control panel to the bottom-front of the upper housing, and remove
the control panel.
6. Lift the upper housing by the front and remove it.
ESPON FX-880/FX-1180 Service Manual
3-9
Disassembly and Assembly
During re-assembly, note the following points:
‰ When replacing the upper housing, seat the hooks on the upper housing in the corresponding
holes in the rear of the lower housing; then close the housing.
‰ The release lever collar can be replaced after the upper housing has already been installed.
Control Panel FFC
Control Panel
CBB Screw (4 x 12)
Release Lever Collar
Release Lever Sheet
CBS Screw (M3 x 6)
Upper Housing
CBS Screw (M3 x 6)
Release Lever
Lower Case
Control Panel FFC
Figure 3-5. Upper Housing Removal
3-10
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
C229 Main Board Removal
1. Follow the disassembly preparation procedure (see page 3-8).
2. Remove the upper housing (see page 3-9).
3. Remove the 5 CBS (M3 × 4) screws and 3 CBB (3 × 12) screws securing the shield cover to the
printer mechanism and lower housing; then remove the shield cover. See Figure 3-6.
4. Remove the connector cables from CN3, CN4, CN5, CN6, CN7, CN8, CN9, CN10, CN11, and CN12
on the C229 main board.
Note: Most of the cables are easily removed by pulling them straight up and out of their sockets.
However, with CN3, CN8, and CN9, you must first raise the head of the connector socket. To do this,
grasp the two small tabs on each end of the socket’s head, and pull straight up. Then pull out the
cable.
5. Remove the 2 CBS (M3 × 12) screws securing the upper interface cover to the upper interface
grounding plate, then remove the grounding plate.
6. Remove the remaining 5 CBB (3 × 12) screws that secure the C229 main board to the lower case.
7. Remove the interface board guide.
8. Remove the 2 CP (M3 × 8) screws securing the lower interface grounding plate to the parallel
interface on the C229 main board, then remove the lower interface grounding plate.
9. Remove the C229 main board.
WARNING
ƒ
The edges of the shield plate are very sharp.
CAUTION
ƒ
Be sure to match the connectors to the correct cables by color – blue to blue, yellow to yellow, etc.
ƒ
The red wire on the cables for CN3, CN8 and CN9 must be in the Pin No. 1 position.
ƒ
After replacing the main board, perform the Default Setting and Bi-d Adjustments to write the new
settings to the EEPROM (see Chapter 4).
ESPON FX-880/FX-1180 Service Manual
3-11
Disassembly and Assembly
CBB Screw (3 x 12)
Lower I/F Grounding Plate
CBS Screw (M3 x 4)
Shield Cover
CBS Screw (M3 x 4)
Upper I/F Grounding Plate
CBB Screw (3 x 12)
CP Screw (M3 x 8)
CBB Screw (3 x 12)
I/F Guide Board
CBB Screw (3 x 12)
C229 Main Board
C229 PSB/PSE Board
ROM
CBS Screw (3 x 12)
Upper Interface Cover
Printer Mechanism
Lower Case
Figure 3-6. Main Board Removal
3-12
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
C229 PSB/PSE Board Removal
WARNING
‰ The primary parts of the power supply are connected to the main power line. Unplug the printer
before servicing, and wait at least 5 minutes for the filter capacitor to discharge.
‰ The heat sink is not electrically isolated from the main power line. Never touch the heat sink while the
printer is plugged in.
‰ The heat sink gets very hot during operation. Avoid touching the heat sink for at least 5 minutes after
unplugging the printer.
1. Follow the disassembly preparation procedure (see page 3-8).
2. Remove the upper housing (see page 3-9).
3. Remove the 5 CBS (M3 × 4) screws and 3 CBB (3 × 12) screws securing the shield cover to the
printer mechanism and lower housing, then remove the shield cover (see page 3-11).
4. Disconnect the connector cable from CN3 on the C229 main board.
5. Disconnect the power cable connector from CN1 on the C229 PSB/PSE board. See Figure 3-7.
Note: To remove the connector, squeeze the latch on the top part of the connector between your
thumb and forefinger. While holding the circuit board down with your other hand, pull the connector up
and off.
6. Remove the 1 remaining CBB (3 × 12) screw on the C229 PSB/PSE board.
7. Use the Extractor to remove the rivet from the C229 PSB/PSE board.
Note: To remove the rivet, center the Extractor on top of the rivet and push down to force the
Extractor’s teeth under the head of the rivet. Then remove the rivet with a pull-and-twist motion.
When re-installing the power supply board, use a CBB (3 × 12) screw in place of the rivet.
ESPON FX-880/FX-1180 Service Manual
3-13
Disassembly and Assembly
CN1
Rivet
CBB Screw (3 x 12)
C229 PSB/PSE Board
Lower Case
C229 Main Board
Figure 3-7. Power Supply Board Removal
ROM Removal
1. Follow the disassembly preparation procedures (see page 3-8).
2. Remove the upper housing (see page 3-9).
3. Remove the 5 CBS (M3 × 4) screws and 3 CBB (3 × 12) screws securing the shield cover to the
printer mechanism and lower housing, then remove the shield cover (see page 3-11).
4. Remove the ROM from the C229 main board.
3-14
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Platen Removal
1. Follow the disassembly preparation procedure (see page 3-8).
2. Remove the upper housing (see page 3-9).
3. Remove the 2 CBS (M3 × 8) screws securing the platen cover. See Figure 3-8.
4. Rotate the platen shaft holders on either end of the platen until the tabs on the holders line up with the
cutouts on the two side frames.
5. Slide the platen slightly to the right, then lift up to remove it.
CAUTION
When replacing the platen, perform the platen gap adjustment (see Chapter 4).
ESPON FX-880/FX-1180 Service Manual
3-15
Disassembly and Assembly
CBS Screw (M3 x 8)
Platen Cover
Platen Shaft Holder
Platen
Platen Shaft Holder
Left Side Frame
Right Side Frame
Figure 3-8. Platen Removal
3-16
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Printer Mechanism Removal
1. Follow the disassembly preparation procedure (see page 3-8).
2. Remove the upper housing (see page 3-9).
3. Remove the 5 CBS (M3 × 4) screws and 3 CBB (3 × 12) screws securing the shield cover to the
printer mechanism and lower housing, then remove the shield cover (see page 3-11).
4. Disconnect the connector cables from CN3, CN4, CN5, CN6, CN7, CN8, CN9, CN10 and CN11 on
the C229 main board.
5. Remove the 2 CBB (4 × 12) screws securing the front frame to the lower housing, then remove the
front frame. See Figure 3-9.
6. Remove the 4 printer mechanism mounting screws, then lift the printer mechanism out to remove it.
CAUTION
After replacing the printer mechanism, perform the platen gap and Bi-d adjustments (see Chapter 4).
ESPON FX-880/FX-1180 Service Manual
3-17
Disassembly and Assembly
CBB Screw (4 x 12)
Front Frame
Mechanism Mounting Screw
Mechanism Mounting Screw
Printer Mechanism
Lower Housing
Figure 3-9. Printer Mechanism Removal
3-18
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Printer Mechanism Disassembly
CR Motor Removal
1. Remove the printer mechanism (see page 3-17).
2. Release the tension spring.
3. Disengage the timing belt from the CR motor pinion and hang it on the nearby hook.
4. Remove the 2 carriage mounting screws securing the CR motor assembly to the right subframe, then
remove the CR motor.
5. Remove the 2 CB (M3 × 6) screws securing the CR motor to the motor bracket, then remove the CR
motor.
Carriage Mounting Screw
CR Motor
CR Motor Bracket
Tension Spring
CB Screw (M3 x 6)
Hook
Timing Belt
Right Subframe
Figure 3-10. CR Motor Removal
ESPON FX-880/FX-1180 Service Manual
3-19
Disassembly and Assembly
When reassembling the CR motor, position it on the bracket as shown below:
CR Motor Bracket
CR Motor
Cable
Figure 3-11. Positioning the CR Motor on its Bracket
CAUTION
After replacing the CR motor or timing belt, perform the Bi-d adjustment (see Chapter 4).
3-20
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
PF Motor Removal
1. Remove the printer mechanism (see page 3-17).
2. Release the motor cable from the printer mechanism.
3. Set the release lever to the tractor feed position (forward).
4. Remove the 2 CBS (M3 × 8) screws securing the PF motor to the right sub frame, then remove the
PF motor.
CAUTION
If the release lever is in the friction feeding position, the PF motor cannot be removed.
Release Lever
MOVE LEVER
FORWARD
PF Motor
CBS Screw (M3 x 8)
Right Subframe
Cable
Figure 3-12. PF Motor Removal
ESPON FX-880/FX-1180 Service Manual
3-21
Disassembly and Assembly
PF Gear Train Disassembly
1. Remove the printer mechanism (see page 3-17).
2. Remove the CR motor (see page 3-19).
3. Remove the PF motor (see page 3-21).
4. Remove the head FFC from the right subframe of the printer mechanism.
5. Remove the 2 CBS (M3 × 8) screws securing the right subframe, then remove the right subframe.
6. Remove the gears.
Spur Gear, 27
Spur Gear, 21
Spur Gear, 34.5
Compression Spring 200
Release Lever
Intermittent Gear
Right Subframe
CBS Screw (3 x 8)
Plain Washer
Spur Gear, 34.5
Spur Gear, 34
Head FFC
Tractor Cam Clutch
Figure 3-13. PF Gear Train Disassembly
3-22
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
CAUTION
ƒ
When assembling, engage the hole in the tractor cam clutch with the lower tab of the release lever.
ƒ
Be sure to properly match the release lever with the teeth of the intermittent gear, as shown below.
Release Lever
Intermittent Gear
Tab
Figure 3-14. Release Lever and Intermittent Gear
ESPON FX-880/FX-1180 Service Manual
3-23
Disassembly and Assembly
PG (Platen Gap) Sensor Removal
1. Remove the printer mechanism (see page 3-17).
2. Release the 2 hooks securing the PG sensor to the left frame of the printer mechanism.
3. Disconnect the cable from the sensor and remove the sensor.
Hook
PG Sensor
Left Frame
Figure 3-15. PG Sensor Removal
3-24
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Release Lever Sensor Removal
1. Remove the printer mechanism (see page 3-17).
2. Release the 2 hooks securing the release lever sensor to the right subframe of the printer
mechanism.
3. Disconnect the cable from the sensor and remove the sensor.
Release Sensor
Hooks
Right Subframe
Figure 3-16. Release Lever Sensor Removal
ESPON FX-880/FX-1180 Service Manual
3-25
Disassembly and Assembly
Front PE (Paper End) Sensor Removal
1. Remove the printer mechanism (see page 3-17).
2. Release the 2 hooks securing the front PE sensor to the rear paper guide.
3. Disconnect the cable from the sensor, then remove the sensor.
Rear Paper Guide
Hook
Front PE Sensor
Figure 3-17. Front PE Sensor Removal
3-26
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
Rear PE Sensor Removal
1. Remove the printer mechanism (see page 3-17).
2. Carefully stand the printer mechanism on end.
3. Release the 2 hooks securing the rear PE sensor to the rear paper guide.
4. Release the 2 hooks attaching the rear paper guide to the sensor, slide the sensor to the rear, and pull
down to remove it.
5. Disconnect the cable from the sensor.
Rear Frame
Rear Paper Guide
Hooks
Rear PE Sensor
Figure 3-18. Rear PE Sensor Removal
ESPON FX-880/FX-1180 Service Manual
3-27
Disassembly and Assembly
Carriage Removal
1. Remove the printer mechanism (see page 3-17).
2. Remove the printhead FFC (see page 3-6).
3. Remove the platen (see page 3-15).
4. Remove the hexagon nut and washer securing the release lever to the CR guide shaft, then remove
the lever.
5. Remove the parallel adjustment bushing from the CR guide shaft.
6. Disengage the timing belt from the CR motor (see page 3-19).
7. Move the carriage to the far-right end of the CR guide shaft, and remove both the carriage and CR
guide shaft by lifting them from the front frame.
8. Release the timing belt from the 2 clips at the bottom of the carriage assembly.
Washer
Release Lever
Hexagon Nut
Carriage
Parallel Adjustment Bushing
Oil Pad
Timing Belt
Carriage Guide Shaft
Front Frame
Figure 3-19. Carriage Removal
CAUTION
After replacing the carriage, perform the platen gap adjustment (see Chapter 4).
3-28
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
CAUTION
When attaching the timing belt to the carriage, secure the timing belt to the left and right clips of the
carriage assembly as shown below. Make sure there is no slack in the timing belt.
Clip
Timing Belt
Wrong
Right
Figure 3-20. Attaching the Timing Belt
ESPON FX-880/FX-1180 Service Manual
3-29
Disassembly and Assembly
Rear Paper Guide Removal
1. Remove the printer mechanism (see page 3-17).
2. Remove the platen (see page 3-15).
3. Remove the hexagon nut and the washer securing the adjust lever to the CR guide shaft, then remove
the lever. See Figure 3-21.
4. Remove the parallel adjustment bushing from the CR guide shaft (see page 3-28).
5. Remove the PG sensor (see page 3-24).
6. Remove the cable from the HP sensor.
7. Remove the 4 CBS (M3 × 8) screws securing the left frame of the printer mechanism, then remove
the left frame. See Figure 3-21.
8. Remove the printhead FFC from the rear frame of the printer mechanism.
9. Remove the 2 CBS (M3 × 8) screws securing the rear frame to the right frame.
10. Push the hook on the bottom of the rear paper guide, then slide the rear paper guide out from the rear
frame.
3-30
ESPON FX-880/FX-1180 Service Manual
Disassembly and Assembly
CBS Screw (M3 x 8)
Left Frame
Rear Paper Guide
CBS Screw (M3 x 8)
Hook
Rear Frame
Rear Frame
Figure 3-21. Rear Paper Guide Removal
ESPON FX-880/FX-1180 Service Manual
3-31
Disassembly and Assembly
Ribbon Drive Removal
1. Remove the printer mechanism (see page 3-17).
2. Remove the platen (see page 3-15).
3. Remove the hexagon nut and the washer securing the adjust lever to the CR guide shaft, then remove
the lever.
4. Remove the parallel adjustment bushing from the CR guide shaft. (see page 3-28)
5. Remove the PG sensor cable (see page 3-24).
6. Remove the HP sensor cable from the left frame.
7. Remove the 4 CBS (M3 × 8) screws securing the left frame, then remove the left frame.
8. Remove the CBC (M3 × 8) screw and the CBB (3 × 8) screw securing the ribbon drive.
9. Release the ribbon drive from the roller drive, then remove the ribbon drive.
CBC Screw (M3 x 8)
Ribbon Drive
Roller Drive
CBB Screw (3 x 8)
Front Frame
Figure 3-22. Ribbon Drive Removal
3-32
ESPON FX-880/FX-1180 Service Manual
4. Adjustments
Adjustment Overview ........................................................................................................................................... 4-1
Required Adjustments .................................................................................................................................. 4-1
Adjustment Tools.......................................................................................................................................... 4-1
Adjusting and Resetting the Printer...................................................................................................................... 4-2
Platen Gap Adjustment................................................................................................................................. 4-2
Factory Settings............................................................................................................................................ 4-4
Bidirectional Adjustment ............................................................................................................................... 4-6
EPSON FX-880/FX-1180 Service Manual
4-i
Adjustments
4-ii
EPSON FX-880/FX-1180 Service Manual
Adjustments
Adjustment Overview
Required Adjustments
Whenever you remove or replace parts, you must perform certain adjustments. The required adjustments are
shown in Table 4-1 according to the type of repair performed.
Table 4-1. Required Adjustments
Repair Procedure
Printhead removal or replacement
Printer mechanism replacement
Printer mechanism removal
Main board replacement
Timing belt replacement
Platen replacement
Carriage assembly replacement
CR motor replacement
EEPROM initialization
Platen Gap
⊗
—
⊗
—
⊗
⊗
⊗
—
—
Factory Settings
—
—
—
⊗
—
—
—
—
—
Bi-D Print Alignment
⊗
⊗
⊗
⊗
⊗
—
⊗
⊗
⊗
Notes:
⊗ means the adjustment is required.
— means the adjustment is not required.
Adjustment Tools
The following table shows the tools required for each adjustment.
Table 4-2. Required Adjustment Tools
Adjustment
Platen gap
Factory settings
Bi-D print alignment
EPSON FX-880/FX-1180 Service Manual
Required Tool
Thickness gauge
Adjustment program diskette
Adjustment program diskette
4-1
Adjustments
Adjusting and Resetting the Printer
Platen Gap Adjustment
If the CR guide shaft has been removed, or if the parallelism adjustment bushing has been rotated, you must
perform the platen gap adjustment. Symptoms of a mis-adjusted platen gap include faint printing (if the gap is
too wide), or smudge marks appearing on the page (if the gap is too narrow). If any of these symptoms appear,
you must perform the platen gap adjustment.
1. Remove the upper housing as described in Chapter 3, Disassembly and Assembly.
2. Remove the printhead from the carriage assembly as described in Chapter 3.
3. Using tweezers, remove the ribbon mask from the carriage assembly.
Ribbon Mask
Carriage Assembly
Figure 4-1. Ribbon Mask Removal
4. Re-install the printhead on the carriage assembly.
5. Set the paper adjustment lever to “0” (the second step position from the rear).
6. Rotate the CR guide shaft so that the large countersunk hole on the left edge of the shaft faces upward.
Parallelism Adjustment Bushing
CR Guide Shaft
Large countersunk hole
Carriage Assembly
Small countersunk hole
Figure 4-2. Setting CR Guide Shaft
4-2
EPSON FX-880/FX-1180 Service Manual
Adjustments
7. Move the carriage assembly to the right edge.
8. Slightly loosen the hexagonal nut securing the PG adjust lever and the CR guide shaft.
9. Set the thickness gauge to 0.38 mm and insert it between the printhead and platen.
10. Insert a screwdriver into the countersunk hole located on the left side of the CR guide shaft and turn the
screwdriver until the platen and the printhead touch each other lightly.
11. Move the carriage assembly to the left edge.
12. Insert the thickness gauge (0.38 mm) between the printhead and platen.
13. Insert the screwdriver into the countersunk hole and turn the screwdriver until the platen and printhead touch
each other lightly.
14. Continue performing adjustment steps 10 through 13, rotating the parallelism adjustment bushing until the
parallelism gap is correct on each end. The difference between the right and left gaps should be less than
0.02 mm.
15. Move the carriage assembly to the center of the printable area.
16. Insert the thickness gauge between the printhead and the platen, and rotate the CR guide shaft until the
platen gap is 0.365 ± 0.015 mm.
0.365+/-0.015
Printhead
Platen
Figure 4-3. Platen Gap
17. When the adjustment is complete, re-tighten the hexagonal nut on the PG adjust lever.
18. Remove the printhead and install the ribbon mask.
19. Re-install the printhead in the carriage assembly.
CAUTION
Do not rotate the platen during adjustment.
EPSON FX-880/FX-1180 Service Manual
4-3
Adjustments
Factory Settings
The printer’s factory settings are stored in the EEPROM on the main board. Therefore, if you replace the main
board, you must restore the settings using the adjustment program.
CAUTION
„
„
When using the adjustment program, do not select any options that are not described in this manual. The
adjustment program is the same as the check program used in the factory and includes many options that
are not needed for service. If you select options other than those indicated in this manual, the printer may go
into an error state and need to be reset.
The new factory settings are saved only after printing a test pattern, as described in the instructions below.
Do not turn the printer off or exit the adjustment program until you have first printed a test pattern.
1. Connect the printer to the host computer with a parallel interface cable.
2. Place continuous paper in the printer, according to the model indicated below:
FX-880:
FX-1180:
10-inch wide paper
15-inch wide paper
3. Run the adjustment program on the host computer.
4. The printhead wire select menu appears. Press ↑ or ↓ to select 9 pins from the list, and press Enter.
Program : xxxxxSetting:
VR 0 = x
VR 1 = x
**
**
[ Printer setting ]
>(1) 9 pins
(2) 24 pins
VR 2 = x
5. The market setting menu appears. Referring to Table 4-3, press ↑or ↓ to select your market from the list and
press Enter. If you need to change your selection, press Esc to display the market setting menu again. An
example (for EAI) is shown below:
Program : xxxxxSetting:
9 pins VR 0 = x
VR 1 = x
VR 2 = x
**
**
[ Setting File ]
(1)
DEFSTD
(6)
ITALIC
>(2)
USASTD
(3)
EURSTD
(4)
NLSP
(5)
RUSSIAN
4-4
EPSON FX-880/FX-1180 Service Manual
Adjustments
Table 4-3. Market List
Destination
EAI, EAI (Latin)
EURO, EDG, EUL, EUL
(SCANDINAVIA), EFS,
EIS, EIB
EDG (NLSP)
EUL (MIDDLE EAST),
EAL, ESP, EHK
Code
USASTD
EURSTD
NLSP
DEFSTD
6. The process selection menu appears. Press ↑ or ↓ to select In line and press Enter.
Program : xxxxxSetting:
9 pins VR 0 = x
VR 1 = x
**
**
[ Process select ]
>(1) In line
(2) Out-Going
VR 2 = x
7. The carriage width select menu appears. Press ↑ or ↓ to select a column width for your printer model, and
press Enter:
FX-880:
FX-1180:
80 columns
136 columns
Program : xxxxxSetting:
9 pins VR 0 = x
VR 1 = x
** In line**
[ Carriage Width ]
>(1) 80 column
(2) 106 column
(3) 136 column
VR 2 = x
8. The main menu appears. Press ↑ or ↓ to select FF paper and press Enter. The printer starts printing the
test pattern.
Program : xxxxxSetting:
9 pins VR 0 = x
VR 1 = x
VR 2 = x
** In line**
[ Main Menu ]
(1) Bi-D Adjust (6) Envelope
>(2)FF paper
(7) – SUB MENU
(3) ---- N/A ----
9. After the test pattern is printed, turn the printer off to store the factory settings in the EEPROM.
10. Press Esc several times to quit the program.
EPSON FX-880/FX-1180 Service Manual
4-5
Adjustments
Bidirectional Adjustment
You can perform the bidirectional adjustment with the adjustment program or from the control panel. This section
describes how to make the adjustment with the adjustment program. To make the adjustment from the control
panel, see “Control Panel Operation” in Chapter 1.
CAUTION
„
When using the adjustment program, do not select any options that are not described in this manual. The
adjustment program is the same as the check program used in the factory and includes many options that
are not needed for service. If you select options other than those indicated in this manual, the printer may go
into an error state and need to be reset.
1. Follow steps 1 through 7 under “Factory Settings” on page 4-4 to display the main menu, shown below:
Program : xxxxxSetting:
9 pins VR 0 = x
VR 1 = x
VR 2 = x
** In line**
[ Main Menu ]
>(1) Bi-D Adjust (6) Envelope
(2)FF paper
(7) – SUB MENU
(3) ---- N/A ----
2. Press ↑ or ↓ to select Bi-D Adjust and press Enter. The printer starts printing the test pattern.
3. The Bi-D adjustment menu appears. Three modes are listed in the menu, and each mode corresponds to a
different print speed. To perform the Bi-D adjustment, you must test the printer at all three speeds. Press ↑
or ↓ to select the desired Bi-D printing mode, and press ← or → to change the setting’s value.
< Bi-D Adjustment >
> Mode 0 = x
Mode 1 = x
Mode 4 = x
Cancel Print
[ESC] [SPACE]
Speed Value
[↑ ↓]
[←→]
Write
[RET]
Default
[HOME]
4. Press the space bar to print the four-line Bi-D pattern for the current print mode, as shown below.
a
H
H
Figure 4-4. Bi-D Adjustment Pattern
4-6
EPSON FX-880/FX-1180 Service Manual
Adjustments
5. Repeat steps 3 and 4 until you achieve satisfactory alignment. Alignment is correct when the vertical lines
on the H’s line up within the margins of error specified below (see a on Figure 4-4):
All modes
Mode 0
Mode 1
Mode 4
Less than 0.05 mm (at the center of the test pattern)
Less than 0.3 mm (at the left and right sides of the test pattern)
Less than 0.2 mm (at the left and right sides of the test pattern)
Less than 0.05 mm (at the left and right sides of the test pattern)
6. Press Enter to set the adjustment value for each mode.
7. Turn off the printer to store the Bi-D settings in the EEPROM.
8. Press Esc several times to quit the program.
EPSON FX-880/FX-1180 Service Manual
4-7
5. Troubleshooting
Overview .................................................................................................................................................... 5-1
Motors................................................................................................................................................ 5-2
Motor Drivers ......................................................................................................................... 5-3
Printhead ........................................................................................................................................... 5-4
Printhead Driver..................................................................................................................... 5-5
Sensors.............................................................................................................................................. 5-6
Power Supply..................................................................................................................................... 5-6
Unit Level Troubleshooting ........................................................................................................................ 5-7
Flowchart 1 – Printer Does Not Operate at Power-On ...................................................................... 5-8
Flowchart 2 – Abnormal Carriage Operation ..................................................................................... 5-9
Flowchart 3 – Problem With Printing During Self-test ..................................................................... 5-10
Flowchart 4 – Printer Does Not Feed the Paper Correctly ...............................................................5-11
Flowchart 5 – Abnormal Control Panel Operation ........................................................................... 5-12
Flowchart 6 – Fails to Print from PC................................................................................................ 5-13
Repairing the Power Supply Circuit Board............................................................................................... 5-14
Repairing the Main Board Assembly........................................................................................................ 5-17
Repairing the Printer Mechanism............................................................................................................. 5-21
EPSON FX-880/FX-1180 Service Manual
5-i
Troubleshooting
5-ii
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Overview
This chapter contains flowcharts and checkpoint tables to help you troubleshoot the printer. Use the
flowcharts to isolate a faulty unit based on abnormal symptoms. Use the checkpoint tables to identify the
faulty part or unit by checking the values or ranges listed for each component.
After completing a repair, perform the appropriate adjustments and any required lubrication. See
Chapter 4 for adjustments, and Chapter 6 for information about lubrication points.
START
Unit Level
Troubleshooting
Unit Repair
(C229 PSB/PSE Board)
Unit Repair
(C229 MAIN Board)
Unit Repair
Printer Mechanism
Disassembly and Adjustment
END
Figure 5-1. Troubleshooting Process Flowchart
The table below lists tools required for troubleshooting.
Table 5-1. Required Tools
Tool
Description
Oscilloscope
Greater than 50 MHz recommended.
Multimeter
Digital recommended. (Analog can be used.)
EPSON FX-880/FX-1180 Service Manual
5-1
Troubleshooting
The following table lists error conditions and shows how they are identified by the beeper and indicator
lights.
Table 5-2. Error Conditions
Indicator
Error Condition
Pause
Paper Out
Tear Off/ Bin
Font
Beeper
Paper out error
On
On


❍×3
Release lever error
On
Blinks


●×5
Paper eject error
On
Blinks


❍×3
Head hot
Blinks
Blinks



Fatal error
Blinks
Blinks
Blinks
Blinks

Notes:
1. ❍ indicates that the beep sounds for 100 ms with an interval of 100 ms.
2. ● indicates that the beep sounds for 500 ms with an interval of 100 ms.
3. A fatal error condition is caused by either a carriage jam or an improper voltage sensed by the power
supply.
Motors
You can use a multimeter to make sure the PF and CR motor coils are good. To check the motors,
disconnect their cables from CN8 and CN9 on the main board, and clip the meter’s leads directly to the
exposed wires on the ends of the cables. The table below shows the expected resistance values for each
motor. When replacing a cable, be sure to insert its red wire at pin 1.
Table 5-3. Motor Test Points
Motor
Connector
Number
Common
Pin
Number
Test Pin
Number
PF Motor
CN8
1
3
Place one lead on pin 1 and the other
lead on pin 3.
2
4
Place one lead on pin 2 and the other
lead on pin 4.
5
1, 2, 3, 4
Place one lead on pin 5 and the other
lead on each of 4 test pins.
CR Motor
CN9
5-2
Test Method
Meter Reading
(Set meter to ohms. Disconnect
motor from main board after printer
is powered off.)
16.0 Ω ± 10%
at 77° F (25° C)
2.7 Ω ± 10%
at 77° F (25° C)
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Motor Drivers
If a motor is not working but its coils seem okay, check the driver. Also, check the driver whenever you
find a defective motor. (When a motor is defective, it sometimes damages the driver.)
PF Motor Driver
To check the PF motor driver (IC11), disconnect the motor cable from CN8 on the main board. Measure
the resistance across the pins as shown below. Any pin from 7 through 17 can be used as the second pin
(these are all tied together to the ground). The meter readings should hold constant, and all readings
should be within 10% of each other.
Table 5-4. PF Motor Driver Resistance Values
Motor Coil
Pins to Measure Across
Expected Resistance Level
A
3
7-17
Constant and all within ±10%
6
7-17
18
7-17
21
7-17
B
CR Motor Driver
To check the CR motor driver (IC8), make sure the cable connector from the motor is plugged in at CN9
on the main board. Measure the resistance across the pins as shown below. The meter readings should
hold constant, with the high readings within 10% of each other and the low readings within 10% of each
other.
Table 5-5. CR Motor Driver Resistance Values
Pins to Measure Across
Expected Resistance Levels
8
4
High
18
15
High
1
4
Low
11
15
Low
EPSON FX-880/FX-1180 Service Manual
Both readings should be constant
and within ±10% of each other.
Both readings should be constant
and within ±10% of each other.
5-3
Troubleshooting
Printhead
You can check for an open circuit in the printhead’s solenoid coils by using a multimeter and the table
below. Note that the test pin numbers shown in Figure 5-2 match the individual printhead solenoids (dot
wires).
Remove the printhead by following the instructions in Chapter 3. Be sure to perform the platen gap
adjustment after replacing or re-installing the printhead.
Table 5-6. Printhead Solenoid Resistance Test Points
Common Pin
Number
Test Pin Number
Test Method
Specifications
C1
1, 4
Place one lead on pin C1 and the other
pin on pin 1 to test solenoid 1.
Place one lead on pin C1 and the other
lead on pin 4 to test solenoid 4.
8.19 ± 0.8 Ω
at 77° F (25° C)
C2
8
Place one lead on pin C2 and the other
pin on pin 8 to test solenoid 8.
8.19 ± 0.8 Ω
at 77° F (25° C)
C3
2, 6
Place one lead on pin C3 and the other
pin on pin 2 to test solenoid 2.
Place one lead on pin C3 and the other
lead on pin 6 to test solenoid 6.
8.19 ± 0.8 Ω
at 77° F (25° C)
C4
5, 9
Place one lead on pin C4 and the other
pin on pin 5 to test solenoid 5.
Place one lead on pin C4 and the other
lead on pin 9 to test solenoid 9.
8.19 ± 0.8 Ω
at 77° F (25° C)
C5
3, 7
Place one lead on pin C5 and the other
pin on pin 3 to test solenoid 3.
Place one lead on pin C5 and the other
lead on pin 7 to test solenoid 7.
8.19 ± 0.8 Ω
at 77° F (25° C)
Printhead Connector
2
Printhead
6 C3 8 C4 C5 1 T
C1 C2 4 9 7 5 3 T
View A
A
Printhead Connector
Figure 5-2. Printhead Connector Pin Alignment
5-4
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Printhead Driver
If the printhead is not working but its solenoids test okay, check the driver circuitry. Also, check the driver
whenever you find a defective solenoid in the printhead. (When a solenoid goes out, it sometimes
damages the driver.) When testing, you should make sure that all transistors within any group in the table
below have readings consistent with each other, within ±10%. The printhead may be left connected during
this procedure, but the printer itself must be unplugged from the power supply.
Table 5-7. Printhead Driver Test Points
Transistor
Power Transistors (for
individual dot wire
solenoids)
Q2,Q3,Q4,Q5,Q6,Q7,Q8,
Q9,Q10
Power Transistors (for
common leads on
printhead)
Q21,Q22,Q23,Q24,Q25
Small-signal Transistors
(surface-mount type)
Q11,Q12,Q13,Q14,Q15
Small-signal Transistors
(surface-mount type)
Q16,Q17,Q18,Q19,Q20
Leads to Measure Across
Meter Reading (resistance)
B→E
Neither open nor shorted.
E→B
Neither open nor shorted.
B→C
Neither open nor shorted.
C→B
O.L.
B→E
Neither open nor shorted.
E→B
Neither open nor shorted.
B→C
Neither open nor shorted.
C→B
Neither open nor shorted.
B→E
Neither open nor shorted.
E→B
Neither open nor shorted.
B→C
Neither open nor shorted.
C→B
Neither open nor shorted.
B→E
O.L.
E→B
Neither open nor shorted.
B→C
O.L.
C→B
Neither open nor shorted.
Note: The middle lead on the surface-mounted transistors corresponds to the base.
EPSON FX-880/FX-1180 Service Manual
5-5
Troubleshooting
Sensors
You can test a sensor by disconnecting its cable connector from the main board and applying the meter’s
leads directly to the exposed (uninsulated) side of the connector.
Table 5-8. Sensor Test Points
Sensor
Connector
Number
Test Pin
Number
Test Method
(Set meter to ohms. Check that
printer power is off.)
Meter Reading
CN4
(HP Sensor)
1: HP
2: GND
Place one lead on pin 1 and the
other lead on pin 2, and check
the continuity while toggling the
sensor lever.
Short: Home position
Open: Not home
CN6
(Front PE
Sensor)
1: PE
2: GND
Place one lead on pin 1 and the
other on pin 2, and check the
continuity while toggling the
sensor lever.
Open: Paper loaded
Short: No paper
CN10
(Release Lever
Sensor)
1: RELEASE
2. GND
Place one lead on pin 1 and the
other on pin 2, and check the
continuity while toggling the
sensor lever.
Open: Friction feed mode
Short: Tractor mode (either push,
pull, or push and pull)
CN11
(PG Sensor)
1: PG 1
2: GND
Place one lead on pin 1 and the
other on pin 2, and check the
continuity while moving the
sensor lever from –0 to 6.
Meter should toggle between:
Open and Short.
(Open: PG –1 to 3)
Printhead
thermistor
T pins
Place one lead on one pin T, and
the other on the second pin T to
check resistance. See Figure 5-2.
Approximately 14K Ω
(at 62.6° F, or 17° C)
Power Supply
The output voltages of the power supply can be measured by pulling out the flat cable (CN2) from
connector CN3 on the main board.
Table 5-9. Output Voltage of the Power Supply Board
Connector
Pin
Output voltage
CN2 (flat cable
on the power
supply board)
1, 2
GP
3, 4
+ 35 V
5, 6
GL
7, 8
+5V
Note: The ground terminals GP and GL are connected and are not separate grounds.
5-6
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Unit Level Troubleshooting
When a problem occurs, you can identify the defective unit based on the symptoms. The table below lists
symptoms for certain problems. Once a problem is identified, refer to the flowchart that corresponds to the
problem.
Table 5-10. Symptoms and Problems
Symptom
Problem Description
The printer does not operate
at power on.
❏
LEDs do not light.
❏
Carriage does not move.
Abnormal carriage operation.
❏
When the printer is powered on, the carriage
moves away from home position after a
moment and stops.
❏
When the printer is powered on, the carriage
returns to home position, but the printer fails to
enter the READY mode.
❏
Self-test is not printed.
❏
Abnormal printing.
❏
Print quality is poor.
❏
No paper is fed.
❏
Paper feed is irregular.
❏
Paper jam occurs.
Control panel operation is
abnormal.
❏
No response to pressed buttons.
❏
Abnormal indication on the control panel.
Printer fails to print from PC.
❏
Self-test prints correctly, but data from the PC
does not print correctly.
❏
Printer does not print.
❏
Printer error message appears on screen.
Problem with printing during
self-test.
Printer does not feed paper
correctly.
EPSON FX-880/FX-1180 Service Manual
Flowchart No.
Flowchart 1
Flowchart 2
Flowchart 3
Flowchart 4
Flowchart 5
Flowchart 6
5-7
Troubleshooting
THE PRINTER DOES NOT
OPERATE AT POWER-ON
START
Is the AC power line
voltage normal?
NO
Use only normal
input voltage.
YES
Has fuse F1 on the
power supply board
blown out?
YES
Replace the fuse.
NO
Disconnect the power cable
from CN3 on the C229
MAIN board, and measure
the +35 volt line at pin 7 or 8
of CN2, and the +5 volt line
at pin 3 or 4.
Is the output
voltage of the
power supply
normal?
NO
Does the fuse
blow again?
YES
NO
Replace the power
supply board.
Is the problem
solved?
YES
NO
YES
Check resistance of
printhead solenoids
and PF and CR motors.
If abnormal, replace the
defective unit.
Is the problem
solved?
YES
NO
Replace the main
board.
END
Flowchart 1. The Printer Does Not Operate at Power-On
5-8
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
ABNORMAL CARRIAGE
OPERATION
START
Are connectors on
the C229 MAIN board
connected securely?
NO
Secure the
connectors.
Is the
problem
solved?
YES
NO
YES
Is the CR guide
shaft obstructed,
or the CR timing
belt broken?
YES
Remove the
obstruction or
replace the belt.
Is the
problem
solved?
YES
NO
NO
Does the carriage
stop after moving to
the right or left
margins?
YES
Check the HP
sensor and
replace if
defective.
Is the
problem
solved?
YES
NO
NO
Are the CR motor
coils defective?
(See Table 5-3.)
YES
Replace the CR
motor.
Is the
problem
solved?
YES
NO
NO
Check the CR motor driver
on the C229 MAIN board,
and replace the board if
defective. (See Table 5-5.)
END
Flowchart 2. Abnormal Carriage Operation
EPSON FX-880/FX-1180 Service Manual
5-9
Troubleshooting
PROBLEM WITH PRINTING
DURING SELF-TEST
START
Run a self-test.
Does anything
print at all?
NO
Make sure the connectors on
the C229 MAIN board are
connected securely.
YES
NO
Do vertical lines in
the printout align?
Perform the
bidirectional
alignment
adjustment.
YES
Is the printing
too faint?
YES
Check the ribbon
and adjust the
platen gap.
NO
YES
Are there
missing dots?
Check the FFCs
using a multimeter.
Replace if defective.
NO
END
Is the problem
corrected?
YES
NO
Replace the
printhead.
Is the problem
corrected?
YES
NO
Replace the
C229 MAIN
board.
END
Flowchart 3. Problem With Printing During Self-test
5-10
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
PRINTER DOES NOT FEED THE
PAPER CORRECTLY
START
Is paper
loaded
correctly?
NO
Load paper
correctly.
Is the
problem
solved?
YES
NO
YES
Are connectors CN5
and CN6 connected
securely?
NO
Secure the
connectors.
Is the
problem
solved?
YES
NO
YES
Does the platen knob
rotate smoothly with
the power turned off?
NO
Check for worn
gears or
obstructions in the
PF mechanism.
Is the
problem
solved?
YES
NO
YES
Is something
stuck in the paper
path?
YES
Remove the
obstruction.
Is the
problem
solved?
YES
NO
NO
Are the PF motor
coils defective?
(See Table 5-3.)
YES
Replace the PF
motor.
Is the
problem
solved?
YES
NO
NO
Check to see if the
PF motor driver is
defective. If so,
replace the C229
MAIN board.
END
Flowchart 4. Printer Does Not Feed the Paper Correctly
EPSON FX-880/FX-1180 Service Manual
5-11
Troubleshooting
ABNORMAL CONTROL PANEL
OPERATION
START
Do the control panel
buttons sound and
feel normal when
pressed?
NO
Is the
problem
solved?
Replace the
PNL board.
YES
NO
YES
Check to make sure
the FFC is securely
connected to the
C229 MAIN board and
to the PNL.
Is the
problem
solved?
YES
NO
Replace the
FFC.
Is the
problem
solved?
YES
NO
Replace the
C229 MAIN
board.
END
Flowchart 5. Abnormal Control Panel Operation
5-12
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
PRINTER FAILS TO PRINT
FROM PC
START
Run the
self-test.
Does the
self-test print
correctly?
NO
Go to
Flowchart 3.
YES
Check the
default
settings.
Is the
problem
solved?
YES
NO
Does the
printer print
from DOS?
NO
Check to see if the I/F
cable is loose, and if it
is, reconnect it.
Otherwise, replace it.
Is the
problem
solved?
YES
NO
YES
Check the software
application and
printer driver for
proper settings.
Replace the
C229 MAIN
board.
END
END
Flowchart 6. Printer Fails to Print from PC
EPSON FX-880/FX-1180 Service Manual
5-13
Troubleshooting
Repairing the Power Supply Circuit Board
This section describes how to identify and repair problems with the C229 PSB/PSE/PSH power supply
board. The table below lists symptoms, likely causes, and solutions to various problems. The checkpoints
refer to waveforms, resistances, and other values that should be present when the component is working
properly. Sometimes, the same solution may be offered for an entire class of problems; in this case, the
checkpoints should be used for reference or as aids to further investigation.
S w itc h in g F E T
F u s e
P h o to - c o u p le r
T ra n s fo rm e r
R e g u la to r IC
C N 1
C N 2
D io d e B r id g e
Figure 5-3. Power Supply Board Layout
Table 5-11. Repairing the C229 PSB/PSE Board
Symptom
Condition
Possible
Cause
Checkpoint
Solution
The printer
does not
operate.
The +35 V line
does not test at
the correct
voltage.
Fuse F1 is
blown.
Examine the fuse to see if it’s
blown.
Replace the
power supply
board.
The transformer
coil (T1) is
open.
Measure the resistance of
the T1 transformer coil.
Replace the
power supply
board.
.
Switching FET
(Q1) is
defective.
Check the voltage waveform
between the source and
drain of Q1.
Replace the
power supply
board.
5-14
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Table 5-11. Repairing the C229 PSB/PSE Board (continued)
Symptom
The printer
does not
operate.
(continued)
Condition
The +35 V line is
defective.
(continued)
Possible
Cause
Checkpoint
Solution
Q2 or Q3 is
defective.
(continued)
Check the voltage waveform
between the collector and
emitter of Q2 and Q3.
Replace the
power supply
board.
PC1 is defective
Check the voltage waveform
at pins 5 and 7 of PC1. The
frame may be used as the
ground.
Replace the
power supply
board.
EPSON FX-880/FX-1180 Service Manual
5-15
Troubleshooting
Table 5-11. Repairing the C229 PSB/PSE Board (continued)
Symptom
The printer
does not
operate.
(continued)
5-16
Condition
The +5 V line is
defective.
Possible
Cause
Checkpoint
Solution
IC51 is
defective.
Check the voltage waveform
at pin 5 of IC51. You can use
pin 9 as the ground.
Replace the
power supply
board.
Check the voltage waveform
at pins 9 and 10 of IC51.
Use the frame as the ground.
Replace the
power supply
board.
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Repairing the Main Board Assembly
This section describes how to identify and repair problems with the C229 MAIN board. The table below
lists symptoms, likely causes, and solutions to various problems. The checkpoints refer to waveforms,
resistances, and other values that should be present when the component is working properly.
Sometimes, the same solution may be offered for an entire class of problems; in this case, the
checkpoints should be used for reference or as aids to further investigation.
PF Motor Driver IC
CR Motor Drive IC
Gate array
E05B50
CN3
PSRAM
Print Head Driver
CPU
PROM
EEPROM
Figure 5-4. Main Board Layout
EPSON FX-880/FX-1180 Service Manual
5-17
Troubleshooting
Table 5-12. Repairing the C229 Main Board Assembly
Symptom
Condition
Possible
Cause
Checkpoint
Solution
The printer
does not
operate.
The CPU does
not operate.
Defective
operation of the
reset circuit.
While turning on the power,
check the voltage waveforms
for the +5 VDC line (pin 3 of
IC1) and the reset signal (pin
1 of IC1). You can use pin 4
as the ground.
Replace the main
board.
5V line
/RESET
The ROM
selection jumper
is defective.
5-18
Check the signal waveform
at pin 22 of IC7 and pin 30 of
IC6. (The signal should be
present at one pin, but not
the other.) You may use pin
15 as the ground.
Replace the
power supply
board.
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Table 5-12. Repairing the C229 Main Board Assembly (continued)
Symptom
Condition
Possible
Cause
Checkpoint
Solution
The printer
does not
operate.
(continued)
The CPU does
not operate.
(continued)
The CPU is
defective.
Check the signal at pin 26 or
27 of IC3 (This is the CPU’s
clock signal.) Pin 28 may be
used as the ground.
Replace the main
board.
Check the carriage motor
phase control signals at pins
5, 6, 16, and 17 of IC8; also,
check the motor drive signals
at pins 1, 8, 11, and 18 of
IC8. The chassis frame may
be used as the ground.
Replace the main
board.
Carriage
operation is
abnormal.
IC8 is defective.
The carriage
does not operate.
Pin 5 of IC8
Pin 1, of IC8
EPSON FX-880/FX-1180 Service Manual
5-19
Troubleshooting
Table 5-12. Repairing the C229 Main Board Assembly (continued)
Symptom
Condition
Possible
Cause
Checkpoint
Solution
Paper feeds
abnormally
Paper does not
feed
IC11 is
defective.
Check the paper feed motor
phase control signals at pins
1, 2, 23, and 24 of IC11; also
check the motor drive signals
at pins 3, 6, 18, and 21 of
IC11. Any pin 7-17 may be
used as the ground, or use
the chassis frame.
Replace the main
board.
Pin 1 of IC11
Pin 3 of IC 8
Self-test
printing is
abnormal.
The self-test does ❏ One of the
transistors
not execute, or
between Q2
the printer does
and Q10 is
not print a
defective.
particular dot.
❏ One of the
transistors
between Q11
and Q25 is
defective.
Check the printhead drive
signal at the collector and
base of Q2 through Q10. In
each case, the emitter may
be used as the ground.
Replace the main
board.
BASE of Q5
COLLECTOR
Q5
CORRECTOROF
of Q5
Data from the Data corruption
host prints
occurs when the
incorrectly.
interface is used.
5-20
The CPU or IC2
is defective.
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Repairing the Printer Mechanism
This section provides instructions for repairing the printer mechanism. It describes various problems,
symptoms, likely causes, checkpoints, and solutions. The checkpoint column shows items to be checked,
including proper values to be set for each component of the printer mechanism. For disassembly
instructions, see Chapter 3. For adjustment instructions, see Chapter 4.
Table 5-13. Repairing the Printer Mechanism
Symptom
Condition
Possible
Cause
Checkpoint
Solution
CR
operation is
abnormal.
Carriage does
not move even
after power is
turned on.
A foreign object
is blocking the
mechanism.
Manually move the timing
belt to check that the motor
rotates normally.
Remove any
foreign objects.
The platen gap
may be badly
adjusted.
Check for the proper
adjustment. (See Chapter 4.)
CR motor is
defective
❏
Measure the coil resistance
of the motor. (It should be
16 Ω ± 10%. See Table
5-3.)
❏
If there’s a short circuit in
the motor, see if there’s
also a short-circuit in the
driver circuit (IC8) on the
main board.
The CR motor
rotates, but the
carriage does
not move.
The pulley drive
is defective.
The timing belt
is defective.
Check to see if the pulley is
broken or worn out.
❏
Check whether the timing
belt is installed correctly on
the carriage.
❏
Make sure the timing belt is
not broken or worn out.
Adjust the platen
gap.
Replace the CR
motor or main
board.
Replace the
pulley drive.
Replace or
reinstall the
timing belt.
The carriage
moves a little to
the left, then
stops.
The carriage
does not move
smoothly.
Check that the carriage
moves smoothly when
moved by hand.
Clean and
lubricate the CR
guide shaft and
frame, or replace
the CR motor.
The carriage
stops after
moving to the
right or left
margins.
The HP sensor
is defective.
Use the multimeter to check
the HP sensor. (See Table
5-8.)
Replace the HP
sensor.
EPSON FX-880/FX-1180 Service Manual
5-21
Troubleshooting
Table 5-13. Repairing the Printer Mechanism (continued)
Symptom
Condition
Possible
Cause
Checkpoint
Solution
Printing is
abnormal.
The carriage
moves, but no
printing occurs.
Printhead FFC
is disconnected
or damaged.
Check that the head FFC is
connected securely to the
board and carriage.
Connect or
replace the
printhead FFC.
The printhead is
defective
Measure the coil resistance
of the printhead. See Table
5-4. It should be about 8 Ω.
Replace the
printhead; if
necessary,
replace the
printer driver.
A dot does not
print.
Abnormal
paper feed.
The printhead is ❏ Check to see if the
defective.
printhead wire is broken.
❏
Measure the printhead coil
resistance. See Table 5-6.
It should be about 8 Ω.
❏
If there’s a short circuit in
the coil, check to see if
there’s a short circuit in the
driver too.
The printout is
uneven or too
light.
The printhead is
defective.
Check to see if the printhead
wire is broken.
Replace the
printhead.
The platen gap
is not adjusted
properly.
Set the gap adjustment lever
to the first position. The
platen gap should be 0.365 ±
0.015.
Adjust the platen
gap. See
Chapter 4.
Printing is
performed;
however, paper
does not feed,
or does not feed
smoothly.
There are
foreign objects
in the paper
path.
Visually inspect the paper
path.
Remove any
foreign objects.
PF motor does
not operate
normally.
❏
Check to see if there are
foreign objects blocking the
motor or drive gear.
❏
Check to see if the gears
are damaged or worn out.
The PF motor is ❏ Measure the coil resistance
defective.
of the PF motor. See Table
5-3. It should be about 16 Ω
± 10%.
❏
5-22
Replace the
printhead.
Replace the
printhead driver, if
necessary.
Remove any
foreign objects, or
replace the gears.
Replace the PF
motor; if
necessary,
replace the driver.
If there’s a short circuit in
the coil, check to see if
there’s a short circuit in the
driver too.
EPSON FX-880/FX-1180 Service Manual
Troubleshooting
Table 5-13. Repairing the Printer Mechanism (continued)
Symptom
Ribbon feed
is abnormal.
Condition
Possible
Cause
Checkpoint
Solution
The ribbon is
not fed.
The ribbon
cartridge is
defective.
Remove the ribbon cartridge.
Rotate the ribbon feed roller
manually to check that the
ribbon cartridge feeds the
ribbon normally.
Replace the
ribbon cartridge.
There are
foreign objects
caught in the
gears of the
ribbon feed
mechanism.
The ribbon
feeds correctly
when the
carriage moves
in one direction,
but fails to feed
when the
carriage moves
in the opposite
direction.
The printout
appears
dirty.
There are ink
spots or dirt on
the printout.
The planet gear
or planet gear
lever is
defective.
❏
❏
Printing
without
paper
Printing
continues past
the end of the
page.
The ribbon
mask is
positioned
incorrectly.
The platen
gap is not
adjusted
correctly.
The PE sensor
is defective.
EPSON FX-880/FX-1180 Service Manual
❏
Move the carriage manually
from left to right to make
sure the RD ratchet rotates.
❏
Check to see if foreign
objects are caught in the
ribbon feed mechanism.
Look at the ribbon drive
gears as you move the
carriage manually to make
sure they’re working properly.
Remove any
foreign objects. If
there are no
foreign objects,
replace the ribbon
feed mechanism.
Replace the
ribbon feed
mechanism.
❏
Make sure the ribbon mask ❏ Reinstall the
is positioned correctly.
ribbon mask.
❏
Set the gap adjustment
lever to the first position,
then check the platen gap.
It should be 0.365 ± 0.015.
Check the PE sensor. See
Table 5-8.
❏
Adjust the
platen gap. See
Chapter 4.
Replace the PE
sensor.
5-23
6. Maintenance
Preventive Maintenance............................................................................................................................. 6-1
Lubrication.................................................................................................................................................. 6-1
EPSON FX-880/FX-1180 Service Manual
6-i
Maintenance
6-ii
EPSON FX-880/FX-1180 Service Manual
Maintenance
Preventive Maintenance
To keep the printer in optimum condition and prevent printer problems, vacuum the printer mechanism to
remove dust and paper debris and regularly clean the exterior case with denatured alcohol. After cleaning
the unit, check that it is properly lubricated as described under Lubrication, below. Also inspect the springs
and rollers to see that they are operating properly.
CAUTION
■
Disconnect the printer from the external AC power source before performing any maintenance
procedures.
CAUTION
■
Do not use thinner, trichloroethylene, or ketone-based solvents on the plastic components of the
printer.
Lubrication
Table 6-1 describes the recommended lubricants. These lubricants have been tested extensively and
have been found to comply with the needs of this printer. Using other lubricants may cause the printer to
malfunction, especially at low temperatures.
CAUTION
■
Never use lubricants other than those specified below. Using other lubricants may damage the
printer and components.
Table 6-1. Lubricants
Type
Name
Quantity
Availability
Part No.
Grease
G-26
40 mg
EPSON
B702600001
Oil
O-2
40 cc
EPSON
B710200001
Apply lubricant to the printer at the points shown in Figures 6-1 through 6-5. Table 6-2 lists each lubrication
point along with its recommended lubricant. Before applying lubricant, make sure the surface to be
lubricated is clean. Do not apply too much lubricant, because this may damage nearby components.
Note:
Apply lubricant before reassembling the printer.
EPSON FX-880/FX-1180 Service Manual
6-1
Maintenance
Table 6-2. Lubrication Points
6-2
Ref. No.
Lubrication Points
Lubricant
1
Cam surface on the 34.5 mm spur gear
G-26 (5 mg)
2
The shaft end of the PF drive roller assembly
G-26 (5 mg)
3
The platen gap adjustment slots on the left frame (excluding
the two slots at the bottom)
G-26 (3 mg for
each slot)
4
Oil pad
O-2 (0.6 ml)
5
The contact points for the gear and shaft in the ribbon drive
assembly
G-26 (3 mg)
6
The inside hole and three shafts in the ribbon drive assembly
G-26 (3 mg)
7
Various contact points for the ribbon drive gear assembly
G-26 (3 mg)
8
6 contact points for the paper guide and release shaft.
G-26
EPSON FX-880/FX-1180 Service Manual
Maintenance
Tractor Clutch Cam
Spur Gears (34.5)
: Lubrication Point Ref. No.(1)
Figure 6-1. Lubrication Point 1
Gap Adjustment Lever
Lubricate all these slots.
Platen Gap Adjustment Slot
: Lubrication Point Ref. No.(3)
: Lubrication Point Ref. No.(2)
Figure 6-2. Lubrication Points 2 and 3
EPSON FX-880/FX-1180 Service Manual
6-3
Maintenance
: Lubrication Point Ref. No. 4
Figure 6-3. Lubrication Point 4
: Lubrication Point Ref. No.(5)
: Lubrication Point Ref. No.(6)
: Lubrication Point Ref. No.(7)
Figure 6-4. Lubrication Points 5, 6, and 7
6-4
EPSON FX-880/FX-1180 Service Manual
Maintenance
Release Shaft
: Lubricating Point (8)
Figure 6-5. Lubrication Point 8
EPSON FX-880/FX-1180 Service Manual
6-5
Appendix
Connector Summary ..................................................................................................................................A-1
Component Layout.....................................................................................................................................A-7
Exploded Diagrams.................................................................................................................................. A-11
Dimensions and Weight...........................................................................................................................A-15
Circuit Diagrams ......................................................................................................................................A-17
EPSON FX-880/FX-1180 Service Manual
A-i
Appendix
A-ii
EPSON FX-880/FX-1180 Service Manual
Appendix
Connector Summary
Figure A-1 illustrates how primary components are connected. Table A-1 lists connector descriptions and
locations.
Printer Mechanism
C229 MAIN Board
C229 PSB/PSE
Board
AC
CN1
CN2
M-3J10 (FX-880)
M-3J60 (FX-1180)
CN7
Printhead
CN3
Parallel I/F
CN1
Type-B I/F
(optional)
CN2
CN11
PG Sensor
CN10
Release Sensor
CN9
CR Motor
CN8
PF Motor
CN6
Rear PE Sensor
CN5
Front PE Sensor
CN4
HP Sensor
CN12
Panel
Figure A-1. Cable Connections
EPSON FX-880/FX-1180 Service Manual
A-1
Appendix
Table A-1. Connector Summary
Board
Connector
Pin
Description
C229 Main Board
Assembly
CN1
36
Parallel interface
CN2
36
Type B interface (Optional)
CN3
10
DC input, Power on/off signals
CN4
2
Home Position (HP) sensor
CN5
3
Rear Page End (PE) sensor
CN6
2
Front PE sensor
CN7
16
Printhead, thermistor
CN8
4
Paper Feed (PF) motor
CN9
5
Carriage Return (CR) motor
CN10
2
Release lever position sensor
CN11
2
Paper Guide (PG) sensor
CN12
12
Control panel
CN1
2
AC line input
CN2
10
DC output, Power on/off signals
C229 PSB/PSE/PSH
Board Assembly
Table A-2. Connector Pin Assignments-CN1
Pin
I/O
Signal
Function
1
In
/STROBE
Strobe pulse. Input data is latched at the falling edge of the
signal.
2 to 9
In
DATA 1 to DATA
8
Parallel input data to the printer.
10
Out
/ACKNLG
Pulse signaling that the printer has received data and is ready
to accept more data.
11
Out
BUSY
HIGH signal indicates that the printer is not ready to accept
data.
12
Out
PE
HIGH signal indicates that the printer is out of paper.
13
Out
SLCT
Always HIGH when the printer is powered on.
14
In
/AFXT
Not used.
15

NC
Not connected.
16

GND
Signal ground.
17

Chassis
Chassis ground.
18
Out
Logic H
This line is pulled up to +5 V through 3.9K Ω.
A-2
EPSON FX-880/FX-1180 Service Manual
Appendix
Table A-3. Connector Pin Assignments-CN1 (continued)
Pin
I/O
Signal
Function
19 to
30

GND
Signal ground.
31
In
/INIT
Initializes the printer.
32
Out
/ERROR
Indicates an error condition.
33

GND
Signal ground.
34

NC
Not connected.
35
Out
+5 V
This line is pulled up to +5 V through 1.0K Ω.
36
Out
/SLIN
Always HIGH when the printer is powered on.
Table A-4. Connector Pin Assignments-CN2
Pin
I/O
Signal
Function
1 to 6

+5
+5 VDC line
7
Out
TXD
Transmit data
8
Out
/READY
Ready to receive data
9
In
RXD
Receiving data
10

NC
No connected
11
Out
/RST
Reset
12
Out
INH
Inhibit
13
In
/CMREQ
Command request
14
In
/WRRDY
Write ready
15
In
/RDRDY
Read request
16
Out
/WR
Write
17
Out
/RD
Read
18
Out
/CS
Chip select
19 to 24

GND
Ground
25
Out
A3
Address bus bit 3
26
Out
A2
Address bus bit 2
27
Out
A1
Address bus bit 1
28
Out
A0
Address bus bit 0
29
In/Out
D7
Data bus bit 7
30
In/Out
D6
Data bus bit 6
31
In/Out
D5
Data bus bit 5
32
In/Out
D4
Data bus bit 4
EPSON FX-880/FX-1180 Service Manual
A-3
Appendix
Table A-5. Connector Pin Assignments-CN2 (continued)
Pin
I/O
Signal
Function
33
In/Out
D3
Data bus bit 3
34
In/Out
D2
Data bus bit 2
35
In/Out
D1
Data bus bit 1
36
In/Out
D0
Data bus bit 0
Table A-6. Connector Pin Assignments-CN3
Pin
I/O
Signal
Function
1
Out
PSC
Power Signal Control
2
In
PWDN
Power down
3 to 4

+5 V
+ 5 VDC line
5 to 6

GND
Ground
7

+35 V
+35 VDC line
8

+35 V
+35 VDC line
9 to 10

GP
Ground
Table A-7. Connector Pin Assignments-CN4
Pin
I/O
Signal
Function
1
In
HP
Home position sensor signal
2

GND
Ground
Table A-8. Connector Pin Assignments-CN5
Pin
I/O
Signal
Function
1

+5 V
+5 VDC line
2
In
PE
Rear PE sensor signal
3

GND
Ground
Table A-9. Connect Pin Assignments-CN6
A-4
Pin
I/O
Signal
Function
1
In
PE
Front PE sensor signal
2

GND
Ground
EPSON FX-880/FX-1180 Service Manual
Appendix
Table A-10. Connector Pin Assignments-CN7
Pin
I/O
Signal
Function
1

+5 V
+5 VDC line
2
In
HTMP
Head temperature signal
3
Out
HEAD3
Head Data 3
4
Out
HEAD1
Head Data 1
5
Out
HEAD5
Head Data 5
6
Out
C5
Head Drive Common 3 and 7
7
Out
HEAD7
Head Data 7
8
Out
C4
Head Drive Common 5 and 9
9
Out
HEAD9
Head Data 9
10
Out
HEAD8
Head Data 8
11
Out
HEAD4
Head Data 4
12
Out
C3
Head Drive Common 3
13
Out
C2
Head Drive Common 8
14
Out
HEAD6
Head Data 6
15
Out
C1
Head Drive Common 1 and 4
16
Out
HEAD2
Head Data 2
Table A-11. Connector Pin Assignments-CN8
Pin
I/O
Signal
Function
1
Out
PFA
PF Motor Phase A
2
Out
PF-A
PF Motor Phase A
3
Out
PFB
PF Motor Phase B
4
Out
PF-B
PF Motor Phase B
Table A-12. Connector Pin Assignments-CN9
Pin
I/O
Signal
Function
1
Out
CRA
CR Motor Phase A
2
Out
CR-A
CR Motor Phase A
3
Out
CRB
CR Motor Phase B
4
Out
CR-B
CR Motor Phase B
5

+35 V
CR Motor Common
EPSON FX-880/FX-1180 Service Manual
A-5
Appendix
Table A-13. Connector Pin Assignments-CN10
Pin
I/O
Signal
Function
1
In
RELEASE
Release sensor signal
2

GND
Ground
Table A-14. Connector Pin Assignments-CN11
Pin
I/O
Signal
Function
1
In
PG1
PG sensor signal
2

GND
Ground
Table A-15. Connector Pin Assignments-CN12
A-6
Pi
n
I/O
Signal
Function
1

+5 V
+5 VDC line
2
Out
POUTL
Paper Out LED
3
Out
PAUSE
Pause LED
4
Out
TOFFL
Tear Off/Bin LED
5
Out
FONT2L
Font LED
6
Out
FONT1L
Font LED
7
In
FONTSW
Font button
8
In
LFFFSW
FF/LF button
9
In
LDEJSW
Load/Eject button
10
In
PAUSESW
Pause button
11
In
PSC
Power switch control signal
12

GND
Ground
EPSON FX-880/FX-1180 Service Manual
Appendix
Component Layout
Figure A-2. C229 MAIN Board Component Layout
EPSON FX-880/FX-1180 Service Manual
A-7
Appendix
Figure A-3. C229 PSB Board Component Layout
A-8
EPSON FX-880/FX-1180 Service Manual
Appendix
Figure A-4. C229 PSE Board Component Layout
EPSON FX-880/FX-1180 Service Manual
A-9
Appendix
Figure A-5. C229PSH Component Layout
Figure A-6. PNL Board Component Layout
A-10
EPSON FX-880/FX-1180 Service Manual
Appendix
Dimensions and Weight
FX-1180
W 23.2 inches (590mm) × D 13.8 inches (350mm) × H 6.1 inches (154mm)
21.2 lbs. (9.6 kg)
6.1" (154 mm)
Dimensions:
Weight:
23.2" (590 mm)
13.8" (350 mm)
Figure A-11. Physical Specifications for FX-1180
EPSON FX-880/FX-1180 Service Manual
A-15
Appendix
FX-880
Dimensions:
Weight:
W 16.3 inches (415mm) × D 13.8 inches (350mm) × H 6.1 inches (154mm)
16.8 lbs. (7.6 kg)
13.8" (350 mm)
6.1" (154 mm)
16.3" (415 mm)
Figure A-12. Physical Specification for FX-880
A-16
EPSON FX-880/FX-1180 Service Manual
Appendix
Circuit Diagrams
CN1
+5V
+5V
12
LED4
FONT2L
8
LED3
FONT1
TOFFL
POUL
PAUL
7
LED2
9
11
LED1
10
LED0
1
2
LFFFSW
3
5
4
3
2
5
SW2
4
4
1
2
PAUSSW
SW3
5
1
LDEJSW
C1
0.1u
25V
6
FONTSW
3
5
SW1
4
3
1
3
2
6
4
5
5
SW0
4
SW4
PSC
GND
3
2
2
1
1
PANEL
GND
Figure A-13. PNL Circuit Diagram
EPSON FX-880/FX-1180 Service Manual
A-17
108
541
104
109
125
125
125
140
113
140
125
118
125
126
106
126
140
105
126
123
126
500
120
119
127
133
135
127
132
102
127
140
127
129
127
330
606
127
117
127
138
126
122
123
450
200
110
137
128
115
112
101
111
100
116
112
400
373
400
107
101
EXPLODED DIAGRAM FOR FX-880(1)
610
610
650
527
575
536
521
530
533
621
573
585
588
524
610
622
525
620
589
531
606
584
528
535
532
583
614
505
619
535
568
535
571
610
534
610
510
502
570
565
578
526
582
610
602
619
594
558
505
572
557
564
598
617
623
616
501
597
601
522
607
559
548
523
595
565
551
593
561
563
590
505
560
123
556
503
562
581
569
586
546
600
576
542
123
610
613
600
615
601
579
587
599
596
586
505
123
552
613
604
609
550
577
603
543
610
504
545
544
547
618
549
608
552
529
592
551
610
524
EXPLODED DIAGRAM FOR FX-880(2)
607
595
591
109
108
125
125
125
104
541
113
125
140
106
118
125
140
123
140
127
133
126
120
127
135
105
132
127
500
127
119
129
127
300
127
117
127
102
140
122
123
200
450
138
606
110
137
126
330
380
112
111
112
373
101
128
400
115
100
400
116
107
101
EXPLODED DIAGRAM FOR FX-1180(1)
610
610
650
521
573
575
527
536
530
524
588
621
525
622
589
620
533
610
585
531
606
528
584
568
583
614
505
535
532
619
535
535
571
610
535
534
610
510
502
624
570
565
582
610
578
558
505
526
602
619
572
557
564
548
594
617
623
522
598
616
551
523
501
597
563
601
559
560
546
553
542
607
593
561
569
586
595
565
590
505
600
123
556
123
600
503
562
576
581
615
600
552
601
579
604
586
587
599
123
596
505
577
603
605
545
504
544
609
550
543
511
547
610
549
580
608
552
553
551
618
610
613
529
592
610
524
EXPLODED DIAGRAM FOR FX-1180(2)
607
595
591
Download PDF