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Professional Radio
GM Series
Service Maintainability
Issue: September 2000
ii
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for
Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product.
Table of Contents
Chapter 1 INTRODUCTION
1.0 Scope of Manual .................................................................................................. 1-1
2.0 Warranty and Service Support............................................................................. 1-1
2.1 Warranty Period and Return Instructions ....................................................... 1-1
2.2 After Warranty Period ..................................................................................... 1-1
2.3 European Radio Support Centre (ERSC)....................................................... 1-2
2.4 Piece Parts ..................................................................................................... 1-2
2.5 Technical Support........................................................................................... 1-3
2.6 Related Documents ........................................................................................ 1-3
3.0 Radio Model Information...................................................................................... 1-4
Chapter 2 MAINTENANCE
1.0 Introduction .......................................................................................................... 2-1
2.0 Preventive Maintenance ...................................................................................... 2-1
2.1 Inspection ....................................................................................................... 2-1
2.2 Cleaning ......................................................................................................... 2-1
3.0 Safe Handling of CMOS and LDMOS.................................................................. 2-2
4.0 General Repair Procedures and Techniques....................................................... 2-2
5.0 Notes For All Schematics and Circuit Boards ...................................................... 2-5
Chapter 3 SERVICE AIDS
1.0 Recommended Test Tools................................................................................... 3-1
2.0 Test Equipment.................................................................................................... 3-2 iii
iv
SAFETY AND GENERAL INFORMATION
Read this information before using your radio.
IMPORTANT INFORMATION ON SAFE AND EFFICIENT OPERATION
The information provided in this document supersedes the general safety information contained in user guides published prior to July 2000. For information regarding radio use in a hazardous atmosphere please refer to the
Factory Mutual (FM) Approval Manual Supplement or Instruction Card, which is included with radio models that offer this capability.
RF Operational Characteristics
Your radio/radio product contains a transmitter and a receiver. When it is ON, it receives and transmits radio frequency(RF) energy.
Exposure To Radio Frequency Energy
Your Motorola radio/radio product is designed to comply with the following national and international standards and guidelines regarding exposure of human beings to radio frequency electromagnetic energy:
●
United States Federal Communications Commission, Code of Federal Regulations; 47 CFR part 2 sub-part J
●
American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers (IEEE) C95.
1-1992
●
●
Institute of Electrical and Electronic Engineers (IEEE) C95.1-1999 Edition
National Council on Radiation Protection and Measurements (NCRP) of the United States, Report 86, 1986
●
●
International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998
National Radiological Protection Board of the United Kingdom 1995
●
Ministry of Health (Canada) Safety Code 6. Limits of Human Exposure to Radiofrequency Electromagnetic
Fields in the Frequency Range from 3 kHz to 300 GHz, 1999
●
Australian Communications Authority Radiocommunications (Electromagnetic Radiation - Human Exposure)
Standard 1999 (applicable to wireless phones only)
To assure optimal radio/radio product performance and make sure human exposure to radio frequency electromagnetic energy is within the guidelines set forth in the above standards, always adhere to the following procedures:
ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY
NOTE Nearly every electronic device is susceptible to electromagnetic interference (EMI) if inadequately shielded, designed, or alternately configured for electromagnetic compatibility.
Facilities
To avoid electromagnetic interference and/or compatibility conflicts, turn off your radio product in any facility where posted notices instruct you to do so. Hospitals or health care facilities may be using equipment that is sensitive to external RF energy.
Medical Devices
Pacemakers
The Health Industry Manufacturers Association recommends that a minimum separation of 15 cms be maintained between a handheld wireless radio product and a pacemaker.These recommendations are consistent with the independent research by, and recommendations of, Wireless Technology Research.
Persons with pacemakers should:
●
ALWAYS keep the radio product more than 15 cms from their pacemaker when the radio product is turned ON.
● not carry the radio product in the breast pocket.
● use the ear opposite the pacemaker to minimize the potential for interference.
● turn the radio product OFF immediately if you have any reason to suspect that interference is taking place.
Hearing Aids
Some digital wireless radio products may interfere with some hearing aids. In the event of such interference, you may want to consult your hearing aid manufacturer to discuss alternatives.
v
vi SAFETY AND GENERAL INFORMATION
Other Medical Devices
If you use any other personal medical device, consult the manufacturer of your device to determine if it is adequately shielded from RF energy. Your physician may be able to assist you in obtaining this information.
Safety and General
Use While Driving
Check the laws and regulations on the use of radio products in the area where you drive. Always obey them.
When using your radio product while driving, please:
●
Give full attention to driving and to the road.
●
Use hands-free operation, if available.
●
Pull off the road and park before making or answering a call if driving conditions so require.
OPERATIONAL WARNINGS
Vehicles with an air bag
!
WARNING: Do not place a radio product in the area over an air bag or in the air bag deployment area. Air bags inflate with great force. If a radio product is placed in the air bag deployment area and the air bag inflates, the radio product may be propelled with great force and cause serious injury to occupants of vehicle.
Potentially explosive atmospheres
!
WARNING: Turn off your radio product prior to entering any area with a potentially explosive atmosphere, unless it is a radio product type especially qualified for use in such areas as
"Intrinsically Safe" (for example, Factory Mutual, CSA, or UL Approved). Do not remove, install, or charge batteries in such areas. Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or even death.
Blasting caps and areas
!
WARNING: To avoid possible interference with blasting operations, turn off your radio when you are near electrical blasting caps, in a “ blasting area” or in areas posted
“ turn off two-way radio”. Obey all signs and instructions.
NOTE The areas with potentially explosive atmospheres referred to above include fueling areas such as below decks on boats, fuel or chemical transfer or storage facilities, areas where the air contains chemicals or particles, such as grain, dust or metal powders, and any other area where you would normally be advised to turn off your vehicle engine. Areas with potentially explosive atmospheres are often but not always posted.
SAFETY AND GENERAL INFORMATION
MOBILE RADIO OPERATION AND EME EXPOSURE
To assure optimal radio performance and that human exposure to radio frequency electromagnetic energy is within the guidelines referenced earlier in this document, transmit only when people outside the vehicle are at least the minimum distance away from a properly installed, externally-mounted antenna. Table 1 lists the minimum distance for several different ranges of rated radio power.
Table 1 Rated Power and Distance
Radiated Power of
Vehicle-installed Mobile
Two-way Radio
7 to 15 Watts
16 to 50 Watts
More than 50 Watts
Minimum Distance
From Transmitting
Antenna
30.5 cm (1 Ft)
61 cm (2 Ft)
91.5 cm (3 Ft) vii
ANTENNA INSTALLATION
Mobile Antennas
Recommended mobile antenna installations are limited to metal body vehicles at the center of the roof and center of the trunk deck locations.
The antenna installation must additionally be in accordance with:
1.
The requirements of the antenna manufacturer/supplier.
2.
Instructions in the Radio Installation Manual.
Fixed Site Antennas
Mobile radio equipment is sometimes installed at a fixed location and operated as a control station or as a fixed unit. In such cases the antenna installation must comply with the following requirements in order to assure optimal performance and make sure human exposure to radio frequency electromagnetic energy is within the guidelines set forth in the above standards:
●
The antenna must be mounted outside the building
●
Mount the antenna on a tower if at all possible
●
If the antenna is to be mounted on a building then it must be mounted on the roof.
As with all fixed site antenna installations, it is the responsibility of the licensee to manage the site in accordance with applicable regulatory requirements and may require additional compliance actions such as site survey measurements, signage, and site access restrictions in order to insure that exposure limits are not exceeded.
viii SAFETY AND GENERAL INFORMATION
Chapter 1
INTRODUCTION
1.0
Scope of Manual
This manual is intended for use by service technicians familiar with similar types of equipment. It contains service information required for the equipment described and is current as of the printing date. Changes which occur after the printing date may be incorporated by a complete Manual revision or alternatively as additions.
NOTE
Before operating or testing these units, please read the Safety Information Section in the front of this manual.
2.0
Warranty and Service Support
Motorola offers long term support for its products. This support includes full exchange and/or repair of the product during the warranty period, and service/ repair or spare parts support out of warranty.
Any "return for exchange" or "return for repair" by an authorised Motorola Dealer must be accompanied by a Warranty Claim Form. Warranty Claim Forms are obtained by contacting an
Authorised Motorola Dealer.
2.1
2.2
Warranty Period and Return Instructions
The terms and conditions of warranty are defined fully in the Motorola Dealer or Distributor or
Reseller contract. These conditions may change from time to time and the following notes are for guidance purposes only.
In instances where the product is covered under a "return for replacement" or "return for repair" warranty, a check of the product should be performed prior to shipping the unit back to Motorola.
This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty.
Prior to shipping any radio back to the appropriate Motorola warranty depot, please contact
Customer Resources (Please see page 2 and page 3 in this Chapter). All returns must be accompanied by a Warranty Claim Form, available from your Customer Services representative.
Products should be shipped back in the original packaging, or correctly packaged to ensure no damage occurs in transit.
After Warranty Period
After the Warranty period, Motorola continues to support its products in two ways.
1.
Motorola's Radio Aftermarket and Accessory Division (AAD) offers a repair service to both end users and dealers at competitive prices.
2.
AAD supplies individual parts and modules that can be purchased by dealers who are technically capable of performing fault analysis and repair.
1-2
2.3
INTRODUCTION
European Radio Support Centre (ERSC)
The ERSC Customer Information Desk is available through the following service numbers:
Austria: 06 60 75 41 Italy: 16 78 77 387
Belgium:
Denmark:
08 00 72 471
80 01 55 72
Luxemburg:
Netherlands:
08 00 23 27
60 22 45 13
Finland:
France:
Germany:
Greece:
UK:
Ireland:
08 00 11 49 10
05 90 30 90
01 30 18 75 24
00 80 04 91 29 020
08 00 96 90 95
18 00 55 50 21
Norway:
Portugal:
Spain:
Sweden:
Switzerland:
Iceland:
80 01 11 15
05 05 49 35 70
90 09 84 902
02 07 94 307
1 55 30 82
80 08 147
2.4
Or dial Customer Care Centre:
Tel: +49 6128 70 2618
Please use these numbers for repair enquiries only.
Piece Parts
Some replacement parts, spare parts, and/or product information can be ordered directly. If a complete Motorola part number is assigned to the part, it is available from Motorola Radio
Aftermarket and Accessory Division (AAD). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by
Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.
All enquiries should be directed to your local Technical Support Team.
Warranty and Service Support
2.5
1-3
Technical Support
Motorola Product Services is available to assist the dealer/distributors in resolving any malfunctions which may be encountered.
UK/Ireland - Richard Russell
Telephone: +44 (0) 1256 488 082
Fax: +44 01256 488 080
Email: [email protected]
East Europe, Turkey and Central Asia
Siggy Punzenberger
Telephone: +49 (0) 6128 70 2342
Fax: +49 (0) 6128 95 1096
Email: [email protected]
Scandinavia - Bjorn Rambert
Telephone: +46 8 735 9282
Fax: +46 8 735 9280
Email: [email protected]
Central Europe (Germany, Benelux,
Austria & Switzerland) - Customer Connect
Telephone: +49 (0) 6128 70 2266
Fax: +49 (0) 6128 95 1685
Email: [email protected]
France - Armand Roy
Telephone: +33 1 6929 5715
Fax: +33 1 6929 5904
Email: [email protected]
Italy - Ugo Gentile
Telephone: +39 0 2822 0325
Fax: +39 0 2822 0334
Email: [email protected]
Middle East & Africa - Ralph Schubert
Telephone: +33 (0) 4 4230 5887
Fax: +33 (0) 4 4230 4784
Email: [email protected]
2.6
Related Documents
The following documents are directly related to the use and maintainability of this product.
Title
GM100 Series Product Manual
GM300 Series Product Manual
GM600/GM1200 Series Product Manual
Language
English
English
German
French
Italian
Spanish
Russian
English
German
French
Russian
Part Number
ENLN4147
ENLN4137
ENLN4138
ENLN4139
ENLN4140
ENLN4141
ENLN4142
ENLN4143
ENLN4144
ENLN4145
ENLN4146
1-4 INTRODUCTION
3.0
Radio Model Information
The model number and serial number are located on a label attached to the back of your radio. You can determine the RF output power, frequency band, protocols, and physical packages. The example below shows one mobile radio model number and its specific characteristics.
Table 1-1 Radio Model Number (Example: MDM25KHC9AN1AE)
MD
Type of
Unit
Model
Series
M 25
Freq.
Band
Power
Level
K
VHF
(136-
174MHz)
H
1-25W
Physical
Packages
C
GM140,
GM340,
GM640
Channel
Spacing
Protocol
9
Programmable
AN
Conventional
5 Tone
Feature
Level
Model
Revision
Model
Package
1
GM140
GM340
GM640
A E
S
UHF 2
(450-
527MHz)
B
LB1
29-36MHz
C
LB2
36-42MHz
D
LB3
42-50MHz
R
UHF 1
(403-
470MHz)
K
25-40W
40-60W
N
GM380,
GM1280
F
GM160
GM360
GM660
A
Databox
AA
Conventional
MDC
O
Databox
(5Tone)
CK
MPT
5
GM160
GM360
GM660
8
GM380
GM1280
7
Databox
(MPT)
Chapter 2
MAINTENANCE
1.0
Introduction
This chapter of the manual describes: preventive maintenance safe handling of CMOS devices repair procedures and techniques
2.0
Preventive Maintenance
The radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended.
2.1
Inspection
Check that the external surfaces of the radio are clean, and that all external controls and switches are functional. It is not recommended to inspect the interior electronic circuitry.
2.2
!
Cleaning
The following procedures describe the recommended cleaning agents and the methods to be used when cleaning the external and internal surfaces of the radio. External surfaces include the front cover, housing assembly, and battery case. These surfaces should be cleaned whenever a periodic visual inspection reveals the presence of smudges, grease, and/or grime.
NOTE
Internal surfaces should be cleaned only when the radio is disassembled for servicing or repair.
The only recommended agent for cleaning the external radio surfaces is a 0.5% solution of a mild dishwashing detergent in water. The only factory recommended liquid for cleaning the printed circuit boards and their components is isopropyl alcohol (70% by volume).
CAUTION: The effects of certain chemicals and their vapors can have harmful results on certain plastics. Aerosol sprays, tuner cleaners, and other chemicals should be avoided.
1.
Cleaning External Plastic Surfaces
The detergent-water solution should be applied sparingly with a stiff, non-metallic, shortbristled brush to work all loose dirt away from the radio. A soft, absorbent, lintless cloth or tissue should be used to remove the solution and dry the radio. Make sure that no water remains entrapped near the connectors, cracks, or crevices.
2.
Cleaning Internal Circuit Boards and Components
Isopropyl alcohol may be applied with a stiff, non-metallic, short-bristled brush to dislodge embedded or caked materials located in hard-to-reach areas. The brush stroke should direct the dislodged material out and away from the inside of the radio. Make sure that controls or tunable components are not soaked with alcohol. Do not use high-pressure air to hasten the drying process since this could cause the liquid to collect in unwanted places. Upon completion of the cleaning process, use a soft, absorbent, lintless cloth to dry the area. Do not brush or apply any isopropyl alcohol to the frame, front cover, or
2-2 MAINTENANCE back cover.
NOTE
Always use a fresh supply of alcohol and a clean container to prevent contamination by dissolved material (from previous usage).
3.0
Safe Handling of CMOS and LDMOS
Complementary metal-oxide semiconductor (CMOS) devices are used in this family of radios.
CMOS characteristics make them susceptible to damage by electrostatic or high voltage charges.
Damage can be latent, resulting in failures occurring weeks or months later. Therefore, special precautions must be taken to prevent device damage during disassembly, troubleshooting, and repair.
Handling precautions are mandatory for CMOS circuits and are especially important in low humidity conditions. DO NOT attempt to disassemble the radio without first referring to the CMOS
CAUTION paragraph in the Disassembly and Reassembly section of the manual.
4.0
General Repair Procedures and Techniques
Parts Replacement and Substitution
When damaged parts are replaced, identical parts should be used. If the identical replacement component is not locally available, check the parts list for the proper Motorola part number and order the component from the nearest Motorola Communications parts center listed in the “Piece
Parts” section of this manual.
Rigid Circuit Boards
The family of radios uses bonded, multi-layer, printed circuit boards. Since the inner layers are not accessible, some special considerations are required when soldering and unsoldering components. The through-plated holes may interconnect multiple layers of the printed circuit.
Therefore, care should be exercised to avoid pulling the plated circuit out of the hole.
When soldering near the 18-pin and 40-pin connectors: avoid accidentally getting solder in the connector. be careful not to form solder bridges between the connector pins closely examine your work for shorts due to solder bridges.
General Repair Procedures and Techniques 2-3
Chip Components
Use either the RLN4062 Hot-Air Repair Station or the Motorola 0180381B45 Repair Station for chip component replacement. When using the 0180381B45 Repair Station, select the TJ-65 minithermojet hand piece. On either unit, adjust the temperature control to 370 °C (700 °F), and adjust the airflow to a minimum setting. Airflow can vary due to component density.
To remove a chip component:
1.
Use a hot-air hand piece and position the nozzle of the hand piece approximately 0.3 cm
(1/8") above the component to be removed.
2.
Begin applying the hot air. Once the solder reflows, remove the component using a pair of tweezers.
3.
Using a solder wick and a soldering iron or a power desoldering station, remove the excess solder from the pads.
To replace a chip component using a soldering iron:
1.
Select the appropriate micro-tipped soldering iron and apply fresh solder to one of the solder pads.
2.
Using a pair of tweezers, position the new chip component in place while heating the fresh solder.
3.
Once solder wicks onto the new component, remove the heat from the solder.
4.
Heat the remaining pad with the soldering iron and apply solder until it wicks to the component. If necessary, touch up the first side. All solder joints should be smooth and shiny.
To replace a chip component using hot air:
1.
Use the hot-air hand piece and reflow the solder on the solder pads to smooth it.
2.
Apply a drop of solder paste flux to each pad.
3.
Using a pair of tweezers, position the new component in place.
4.
Position the hot-air hand piece approximately 0.3 cm (1/8” ) above the component and begin applying heat.
5.
Once the solder wicks to the component, remove the heat and inspect the repair. All joints should be smooth and shiny.
2-4 MAINTENANCE
Shields
Removing and replacing shields will be done with the R1070 station with the temperature control set to approximately 215
°
C (415
°
F) [230
°
C (445
°
F) maximum].
To remove the shield:
1.
Place the circuit board in the R1070 circuit board holder.
2.
Select the proper heat focus head and attach it to the heater chimney.
3.
Add solder paste flux around the base of the shield.
4.
Position the shield under the heat-focus head.
5.
Lower the vacuum tip and attach it to the shield by turning on the vacuum pump.
6.
Lower the focus head until it is approximately 0.3 cm (1/8”) above the shield.
7.
Turn on the heater and wait until the shield lifts off the circuit board.
8.
Once the shield is off, turn off the heat, grab the part with a pair of tweezers, and turn off the vacuum pump.
9.
Remove the circuit board from the R1070 circuit board holder.
To replace the shield:
1.
Add solder to the shield if necessary, using a micro-tipped soldering iron.
2.
Next, rub the soldering iron tip along the edge of the shield to smooth out any excess solder. Use solder wick and a soldering iron to remove excess solder from the solder pads on the circuit board.
3.
Place the circuit board back in the R1070 circuit board holder.
4.
Place the shield on the circuit board using a pair of tweezers.
5.
Position the heat-focus head over the shield and lower it to approximately 0.3 cm (1/8”) above the shield.
6.
Turn on the heater and wait for the solder to reflow.
7.
Once complete, turn off the heat, raise the heat-focus head and wait approximately one minute for the part to cool.
8.
Remove the circuit board and inspect the repair. No cleaning should be necessary.
Notes For All Schematics and Circuit Boards 2-5
5.0
Notes For All Schematics and Circuit Boards
* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.
1.
Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads
(pF) or microfarads (µF).
2.
DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series with the voltage probe to prevent circuit loading.
3.
Interconnect Tie Point Legend:
16_8MHz
3V3
5V
16.8MHz Reference Frequency
Regulated 3.3V Supply Voltage for Voice Storage
Regulated 5V Supply Voltage for RF Circuitry
Regulated 5V Supply Voltage (Control Head) 5V
5V RF
5V SOURCE
5VD
Regulated 5V Supply Voltage for RF Circuitry
5V Signal to Switch On Control Head
Regulated 5V Supply Voltage for Digital Circuitry
Regulated 9.3V Supply Voltage 9V3
9V3FLT
A+
ADDR
Filtered 9.3V Supply Voltage
13.2V Supply Voltage
*P Address Lines
Analog Lines to Analog to Digital Converter AN
ANALOG INPUT 2
ANALOG INPUT 3
BATTERY VOLTAGE
External Keypad Matrix Column Signal
External Keypad Matrix Row Signal
Battery Voltage Sense Line
Back Light Anode Green BL A GREEN
BL A RED
BL GREEN
BL K GREEN
Back Light Anode Red
Green Back Light Control
Back Light Cathode Green
Back Light Cathode Red BL K RED
BL KP Green
BL KP RED
BL LCD GREEN
Green Keypad Back Light Control
Red Keypad Back Light Control
Green Display Back Light Control
Red Display Back Light Control BL LCD RED
BL RED
BOOT CNTRL
BOOT MODE
Red Back Light Control
Bootstrap Mode Enable Signal
Boot Mode Select
Control Head Switch On Signal BOOT PWR ON
BOOT SCI RX
BOOT SCI TX
BOOT VPP
BUS+
BWSELECT
Serial Communication Interface Receive Line
Serial Communication Interface Transmit Line
Boot Mode Select
Bi-directional Serial Communication Line
Signal to select between the Ceramic Filter Pairs
2-6
CH ACT
CH KP ID
CH REQUEST
CLK
CNTLVLTG
CNTR AUDIO
COL x
CSX
DATA
DC POWER ON
DISCAUDIO
ECLK
EE CS
EMERGENCY CONTROL
EXP BD REQ
EXP1 CS
EXP2 CS
EXT KP COL
EXT KP ROW
EXT MIC
EXT SWB+
F1200
FECTRL 1
FECTRL 2
FLASH CE
FLASH OE
FLAT RX SND
FLAT TX RTN
FLT A+
GP x IN
GP x IN ACC y
GP x IN OUT ACC y y
GP x OUT
GP x OUT ACC y
GPIO
HANDSET AUDIO
HOOK
HSIO
IF
IGNITION CONTROL
MAINTENANCE
Channel Activity Indicator Signal (Fast Squelch)
Control Head Keypad ID (Data) Lines
Control Head Request from Control Head *P
Clock Signal
PA Power Control Voltage
Audio Lines of the Controller
Keypad Matrix Column x
Chip Select Line PCIC / FRACN
Data Signal
Electronic Switching On or Off of the Radio's Voltage Regulators
Audio Output Signal from the Receiver IC
Clock (not used)
EEPROM Chip Select
Emergency Line to switch on the Radio's Voltage Regulators
Service Request Line from Expansion Board
Expansion Board Chip Select 1
Expansion Board Chip Select 2
External Keypad Matrix Column Signal
External Keypad Matrix Row Signal
External (from Accessory Connector) Microphone Input
External Switched 13.2V Supply Voltage
Interrupt Line from ASFIC CMP
Control Voltage for Front End Filter
Control Voltage for Front End Attenuator Switch
Flash Chip Select
Flash Output Enable
Option Board Audio Output Signal
Flat TX Input from Option Board and Accessory Connector
Filtered 13.2 V Supply Voltage
General Purpose Input x
General Purpose Input x from Accessory Connector Pin y
General Purpose Input /Output x from Accessory Connector Pin
General Purpose Output x
General Purpose Input x from Accessory Connector Pin y
General Purpose Input Output Lines
Handset Audio Output
Hang-up Switch Input
High Speed Clock In / Data Out
First Intermediate Frequency Signal
Ignition Line to switch on the Radio's Voltage Regulators
Notes For All Schematics and Circuit Boards 2-7
IN 5V RF REG
INT KP COL
INT KP ROW
INT MIC
INT SWB
INT SWB+
IRQ
K9V1
KEYPAD ID
LCD A0
LCD CS
LCD DATA
LCD E RD
LCD RW WR
LED CNTRL
LED GREEN
LED RED
LED YELLOW
LOCK
LSIO
LVZIF CS
MIC
MISO
MODIN
MOSBIAS 2
MOSBIAS 3
NOISE BLNKR
ON OFF CONTROL
Supply Voltage for 5V Regulator in RF Section
Internal Keypad Matrix Column Signal
Internal Keypad Matrix Row Signal
Internal (from Control Head) Microphone Input
Internal Switched 13.2V Supply Voltage
Internal Switched 13.2V Supply Voltage
Interrupt Request from Control Head
9.1V in Transmit Mode
Keypad Identification Line
LCD Control / Display Data Select
LCD Chip Select
LCD Data Lines
LCD Enable Read
LCD Read Write Control
LED Control Lines
Green LED Control
Red LED Control
Yellow LED Control
Lock Detect Signal from Synthesizer
Low Speed Clock In / Data Out
LVZIF Chip Select (not used)
Microphone Input
Serial Peripheral Interface Receive Line
Modulation Signal into the Synthesizer
PA Bias Voltage for second Stage
PA Bias Voltage for third Stage
Noise Blanker Enable (Low Band only)
Service Request Line from Control Head / Manual Switching On of the Radio's Voltage Regulators
ON OFF SENSE (Control Head) On Off Sense Line to Control Head *P
ON OFF SENSE (Controller) Service Request Line from Control Head
OPT CS
OPT PTT
Option Board Chip Select
PTT from Option Board
PA PWR SET
PA SWB
PASUPVLTG
PCIC MOSBIAS 1
ASFIC Output Voltage to set the Transmitter Power
Switches Supply Voltage for PA Current Control Circuitry
13.2 V Supply Voltage of the Transmitter PA
PA Bias Voltage for first Stage
PRESC
PTT IRDEC
PTT IRDECODER
R W
Prescaler Signal from VCO to Synthesizer
Microphone PTT Input
Microphone PTT Input
Read Write Signal for RAM / Flash
2-8 MAINTENANCE
SQ DET
SYN
TEMP SENSE
TEMPSENSE
TRB
TX AUD RTN
TX AUD SND
TXINJ
U DRIVER
U PREDRIVER
UNSW 5V
URX SND
VAG
VCOBIAS 1
VCOBIAS 2
VCOMOD
RAM CS
RDY
REF CS
RESET
ROW x
RSSI
RX ADAPT
RX AUD RTN
RX FLAT FILTERED AUDIO
RXIN
RXINJ
SCI RX
SCI TX
SPI
SPKR-
SPKR+
VCTRL
VDDA
VOLTAGE SENSE
VOLUME
VOX
VPP
VS AUDIOSEL
VS GAINSEL
VS INT
RAM Ship Select
Service Request Line from Option Board
Reference Chip Select (not used)
Reset Line
Keypad Matrix Row x
Received Signal Strength Indicator
Flat TX Path Disable during Transmitter Key-up
Option Board Input / Output of Receiver Audio Path
Flat or Filtered Audio to Accessory Connector
RF Signal from Antenna Switch into the Receiver
RF Signal from the VCO into the Mixer
Serial Communication Interface Receive Line
Serial Communication Interface Transmit Line
Serial Peripheral Interface Bus
Negative Audio PA Speaker Output
Positive Audio PA Speaker Output
Squelch Detect Signal
*P Clock Signal
Temperature Sense Line for LCD
Temperature Sense Line from PA to *P
TX/RX VCO Switch Signal
Option Board Output to Transmit Audio Path
Microphone Audio to Option Board
RF Signal from the VCO into the Transmitter PA
Supply Voltage for PA Driver
Supply Voltage for PA Pre-driver
Permanent 5V Supply
Filtered Audio Signal to Option Board
2.5V Reference Voltage for Analog Circuitry
Switch Signal from Synthesizer
Switch Signal from Synthesizer
Modulation Signal into VCO
VCO Frequency Control Voltage
Regulated 5V for Digital Circuitry in RF Section
Voltage Sense Line from LCD
Volume Pot Output
Voice Operated Transmit Level
Boot Mode Select
Switch Signal to Enable Option Board Audio Output Signal
Voice Storage Gain Select Line
Voice Storage Interrupt Line
Notes For All Schematics and Circuit Boards
VS MIC
VS RAC
VSF
VSTBY
Voice Storage Audio Signal into Microphone Path
Voice Storage Row Address Clock Signal
Voltage Super Filtered (5V)
5V Supply for *P when the Radio is switched off
4-LAYER CIRCUIT BOARD DETAIL VIEWING
COPPER STEPS IN PROPER LAYER SEQUENCE
SIDE 1
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
LAYER 4 (L4)
INNER LAYERS
SIDE 2
2-9
2-10 MAINTENANCE
Chapter 3
SERVICE AIDS
1.0
Recommended Test Tools
Table 3-1 lists the service aids recommended for working on the radio. While all of these items are available from Motorola, most are standard workshop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed.
Table 3-1 Service Aids
Motorola Part
Number
RLN4460_
Description Application
RKN4081_
RLN4853_
RKN4083_
GTF374_
RLN4008_
HLN8027_
GPN6133_
EPN4040_
EPN4041_
8180384J59
8180384L95
8180384J60
8180384J61
3080369B71
3080369B72
6686119B01
Portable Test Set Enables connection to audio/accessory jack.
Allows switching for radio testing.
Includes radio interface box (RIB) capability.
Programming Cable with
Internal RIB
10 to 20 Pin Adapter Connects RKN4081_ to the radio accessory connector.
Connects radio to RIB (RLN4008_).
Mobile Programming/Test
Cable
Program Cable
Radio Interface Box
Mini UHF to BNC Adaptor
Power Supply
Connects RIB to Radio microphone input
Enables communications between radio and computer’s serial communications adapter.
Adapts radio antenna port to BNC cabling of test equipment.
Provides the radio with power when bench testing.
Wall-Mounted Power Supply Used to supply power to the RIB (UK).
Wall-Mounted Power Supply Used to supply power to the RIB (Euro)
Housing Eliminator (short)
Housing Eliminator
(short + top)
Housing Eliminator
(medium)
Housing Eliminator (long)
Computer Interface Cable
Computer Interface Cable
Removal Tool
Test Fixture used to bench test the radio pcb
Test Fixture used to bench test the radio pcb.
(Radio using pressure pads to retain pcb)
Test Fixture used to bench test the radio pcb
Test Fixture used to bench test the radio pcb
Connects the RIB to the Computer (25-pin)
Connects the RIB to the Computer 9-pin
(Use for IBM PC AT - other IBM models use the B71 cable above)
Assists in the removal of radio control head.
3-2 SERVICE AIDS
2.0
Test Equipment
Table 3-2 lists test equipment required to service the radio and other two-way radios.
Table 3-2 Recommended Test Equipment
Motorola Part
Number
R2600_NT
Description
Comms System Analyzer
(non MPT)
Characteristics Application
R2680_NT
*R1072_
*R-1377_
WADN133
R1440_
0180305F17
0180305F31
0180305F39
RLN4610
Comms System Analyzer
( MPT1327) to be ordered with
RLN1022_ (H/W)
RLN1023_ (S/W)
Digital Multimeter
AC Voltmeter
Delay Oscilloscope
Wattmeter,
Plug-in Elements
Plug-in Elements
Plug-in Elements
Carry case
This monitor will substitute for items with an asterisk*
This monitor will substitute for items with an asterisk*.
Frequency/deviation meter and signal generator for widerange troubleshooting and alignment
Frequency/deviation meter and signal generator for widerange troubleshooting and alignment
AC/DC voltage and current measurements
Audio voltage measurements
100µV to 300V, 5Hz -
1MHz, 10Megohm input impedance
2 Channel 40MHz bandwidth,
5mV/cm - 20 V/cm
Thruline 50-Ohm,
±5% accuracy
100W, 25 - 60MHz
25W, 100-250MHz
10W, 200-250MHz
Wattmeter and
6 elements
Waveform measurements
Transmitter power output measurements
T1013_
S1339_
RF Dummy Load
RF Millivolt Meter
R1011_/220V 220V Power Supply
100mV to 3 VRF.
10kHz to 1.2GHz
0 - 40V 0 - 40A
RF level measurements
Programmable
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