7450-Calibration guide INIT1 INIT2

Accel-7450
24-Pin Dot Matrix Printer
Calibration Guide
© September 2012, AMT Datasouth Corp.
Document # 130135
Copyright Declaration
Information in this guide is subject to change without notice and does not represent a
commitment on the part of AMT Datasouth Corporation. No part of this document may
be reproduced or transmitted in any form by any means, for any purpose other than the
purchaser’s personal use, without the expressed written permission of AMT Datasouth
Corporation.
For detail service and repair instructions the ACCEL 7450 Service Guide is available for
purchase.
Regulatory Statement:
FCC
Class B
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including
interference that may cause undesired operation.
The manufacturer is not responsible for any radio or TV
interference caused by unauthorized modifications to this
equipment. Such modifications could void the user’s
authority to operate the equipment.
LISTED
16PU
NWGQ
E247562
120VAC ~ 60Hz ~ 2.3A
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Table of Contents
Safety .............................................................................................................................. 2
Control Panel .................................................................................................................. 4
Calibration Key Functions ............................................................................................ 4
Initialization #1 ................................................................................................................ 5
Initialization #2 (Cut-sheet).............................................................................................. 5
Initialization #2 (Tractor) .................................................................................................. 6
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ACCEL-7450
SAFETY
This GUIDE is to help qualified service technicians repair or adjust your ACCEL-7450
printer.
Please read the guide carefully before repairing and making adjustments to your printer.
The warranty will not cover any trouble with or damage to the printer resulting from
repair or modification by unqualified persons.
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ACCEL-7450
Operational safety

Do not touch the print head immediately
after printing because it is too hot.

Do not put your finger under the tractor
cover while loading fanfold paper.
CAUTION

Cautions in setting up
Do not put your finger on the tractor
gear, when using the rear tractor.
CAUTION

Unpack the printer. Make sure that the
printer body and all accessories are
included in the package and no parts are
damaged.

Place the printer on a rigid,
horizontal base in a location that is
free of vibration.

Do not use the printer in a location
exposed to direct sunlight or close to a
heater or other heat generating
equipment.

Before connecting or disconnecting
the interface cable, be sure to turn
off the printer.

Do not use the printer in a dusty location
or any location subject to sudden
changes in temperature and humidity.

Do not connect the printer to a nonstandard power source.

Never try to print without a ribbon
cassette installed and paper loaded.


Rear Operating Clearance
Take care not to twist the ribbon while
installing the ribbon cassette.


Fanfold Paper: 2” plus Paper Length
Manual Cut Sheets: Paper Length
Minus 9”

If the case or cover becomes dirty,
clean it with a soft cloth moistened
with a small quantity of neutral
detergent diluted with water. Never
use a hard cloth or volatile solvent
such as alcohol, thinner, or benzene.

Do not turn off the printer during
printing, as this may lead to a
malfunction.
Push the lock levers of both tractors to
the LOCK positions firmly when loading
fanfold paper.
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ACCEL-7450
CONTROL PANEL
The liquid crystal display (LCD) on the control panel displays the current printer status,
user messages and menu functions.
Calibration Key Functions
INITIALIZATION Power-up while pressing HIGH IMPACT + LF keys together. LCD will display
#1 (No Paper) INITIALIZING… EEPROM INITIAL 1. User settings are restored.
Power-up while pressing SPEED + TEAR OFF keys together. LCD will
INITIALIZATION
display INITIALIZING… EEPROM INITIAL 2 / Cut Sheet. Sensor threshold
#2 (Cut-sheet)
settings are set.
Power-up while pressing ONLINE + EJECT/LOAD keys together. LCD will
INITIALIZATION
display INITIALIZING… EEPROM INITIAL 2 / Tractor. Tractor sensor
#2 (Tractor)
threshold setting is set.
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ACCEL-7450
INITIALIZATION #1
Scope:
This function is used to restore feature USER default settings stored in memory.
Procedure:
1. With the printer power turned OFF and no paper loaded, press and hold the
HIGH IMPACT and LF keys while turning ON the printer power switch. Hold keys
until printer initialization (carriage movement) is completed. The LCD display will
read “EEPROM INITIAL 1“.
2. The inialization process is completed when the printer returns to a READY state.
END OF PROCEDURE
INITIALIZATION #2 (CUT-SHEET)
Scope:
This function is used to calibrate and set Cut-sheet media sensor thresholds.
• Right/left edge sensors
• Manual feed paper sensor
• Reference pulse for skew detection
Procedure:
1. Select control panel AUTO print gap, and Cut Sheet
modes.
2. With the printer power turned OFF and no paper loaded, press and hold the
SPEED and TEAR OFF keys while turning ON the printer power switch. Hold
keys until printer initialization (carriage movement) is completed. The LCD
display will read “EEPROM INITIAL 2, CUT SHEET MODE“.
3. Load a cut-sheet paper landscape (
) into the printer. The paper will feed
into the printer in three different positions comparing open and closed sensor
readings to set the appropriate edge detect and media in/out thresholds. NOTE:
failure to load the paper in a landscape orientation will cause “PAPER EDGE
SENSOR ERROR” and incorrect threshold settings.
4. The initialization process is completed when the printer returns to a READY
state.
END OF PROCEDURE
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ACCEL-7450
INITIALIZATION #2 (TRACTOR)
Scope:
This function is used to calibrate and set rear tractor media sensor thresholds.
Procedure:
1. Select control panel AUTO print gap, and Tractor
modes.
2. With the printer power turned OFF and no paper loaded, press and hold the
ONLINE and EJECT/LOAD keys while turning ON the printer power switch. Hold
keys until printer initialization (carriage movement) is completed. The LCD
display will read “EEPROM INITIAL 2, TRACTOR MODE“.
3. The paper will feed into the printer comparing open and closed tractor sensor
readings to set the appropriate media in/out thresholds.
4. The initialization process is completed when the printer returns to a READY
state.
END OF PROCEDURE
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ACCEL-7450
AMT Datasouth Corporation
www.amtdatasouth.com
Corporate Headquarters
803 Camarillo Springs Rd. Suite D
Camarillo, CA 93012
800-215-9192 PH
(805) 389-3657 FX
Charlotte Operations
5033 Sirona Dr., Suite 800
Charlotte, NC 28273
800-476-2120 PH
(704) 525-6104 FX
Service: extension #252
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