Motorola Cm Radio Basic Manual

							Radio Disassembly - Detailed2-9
6.6 Disassembly of Control Head - CM140/CM340
1. Disconnect the flat cable from the Control Head PCB connector. See Figure 2-9
2. Remove the keypad assembly from the control head housing by lifting it up from the face side.
3. Disconnect the speaker socket and remove the speaker from the keypad assembly.
4. Remove the pcb from the keypad assembly.
5. Remove the LENs from the rubber keypad assembly.
.
Figure 2-9Control Head Housing Removal (CM140/CM340)
NOTEDO NOT touch or contaminate the conductive pads on the under side of the keypad
or the conductive contacts on the printed circuit board.
Control Head Housing
Keypad Assembly
Lens
PCB
Speaker 
						

							2-10MAINTENANCE
6.7 Disassembly of Control Heads - CM160 and CM360
1. Disconnect the flat cable from the Control Head PCB connector. See Figure 2-10
2. Remove the keypad assembly from the control head housing by lifting it up from the face 
side.
3. Disconnect the speaker socket and remove the speaker from the keypad assembly.
4. Remove the PCB from the keypad assembly.
5. Remove the LCD assembly from the rubber keypad assembly.
Figure 2-10Control Head Housing Removal (CM160/CM360)
NOTEDO NOT touch or contaminate the conductive pads on the under side of the keypad,
the conductive contacts on the printed circuit board or the elastomeric connector.
Control Head Housing
SpeakerKeypad Assembly
LCD AssemblyPCB 
						

							Radio Assembly2-11
7.0 Radio Assembly
7.1 Chassis Assembly
1. Ensure that the Fugi Poly Thermal Pad is on the small pedestal located on the PA 
compartment of the chassis.
2. Verify that the potentiometer is soldered properly.
3. Take the main PCB and smear thermal paste on LDMOS Power Amplifier, TO220, and Audio 
Power Amplifier. 
4. Slide the main board diagonally into the chassis. 
5. Assemble the O-ring on the RF connector and tighten it using Torque 22 lb.in.
6. Tighten the RF connector security screw M1.6 using Torque 1.5 lb. (through the opening in 
the PCB).
7. Tighten all eight screws (Torx T9).
8. Take the Power Amplifier Clip and insert the leg-shape side into the opening groove located 
on the PCB. Tighten the screw using Torque 13 lb.in
9. Take the PA Shield and place it on the PA compartment. Tighten the three screws using 
Torque 13 lb.in. Tighten the middle screw first, then the screw located on the left side, and 
lastly the screw located on the right side.
10. Insert the DC cable into the slot. Ensure that it is seated correctly on the chassis hook located 
below the DC cable. Attach it to the chassis and PCB by tightening the two screws using 
Torque 13 lb.in (Torx T10).
11. Take the main shield and place it on the chassis. Check that the corners of the main shield are 
seated properly on the corner supports.
12. Take the main seal and place it inside the top cover. Verify that the main seal is seated prop-
erly on its placement ribs and all around the groove.
13. Take the upper cover, place it properly on the chassis, and push it down. Three click sounds 
are heard from both sides and back.
7.2 Control Heads Assembly
1. Assemble the Contol Heads by reversing the procedure for dis-assembly.
7.3 Control Head Fitting
1. Hold the Control Head in one hand and the chassis assembly in the other hand.
2. Insert the flat cable into the main PCB connector through the slot in the chassis.
3. Place the Control Head Assembly on the chassis assembly in a diagonal manner. Two clicking 
sounds are heard.
4. Insert the Volume Knob into its groove and push it in.
5. Place the cap of the accessory connector over the accessory pin.NOTE
Care should be taken not to touch or contaminate the conductive strip connectors and key-
pad conductors on the underside of the display and the elastomeric connectors (CM160/
CM360 only). 
						

							2-12MAINTENANCE
7.4 Option Board Installation
1. Follow the disassembly procedure in paragraphs 6.1 to 6.3.
2. Remove and discard the 4xM3 screws holding the main pcb and replace with the 4 spacers 
provided. Torque the spacers to 10 lbs.
3. Insert the jumper flex into the connector on the option board. Notice the orientation of the 
right-angle flex circuit.
4. Insert the other end of the jumper flex into the connector on the main pcb. 
5. Fold the flex circuit under the option board. 
6. Position the option board over the spacers and retain using the 4xM2 screws provided.
Figure 2-11Option Board Installation
7. With the option board correctly in place, the main shield and top cover can be assembled as 
detailed in paragraph 7.1 steps 11 to 13.
Spacers Flex Option Board M2 Screws
4xM3 screws
(replaced by spacers) 
						

							Radio Exploded Mechanical Views and Parts Lists 2-13
8.0 Radio Exploded Mechanical Views and Parts Lists
8.1 Radio Assembly - 25W Models
Figure 2-12Radio Assembly - 25W Models
Ta b l e 2 - 1Radio Assembly Parts List - 25W Models
Item No. Description Part Number
1 Upper Cover 25W 1589224U01
2 Main Seal 3289329U01
3 Main Shield2689338U01
4 PA Shield 2689337U01
5 RF Connector Clip4289561U01
6 Screw  0310943J12
7 PA  C l i p0789352U01
8  VHF Main PCB
UHF Main PCB
Midband Main PCBFLD6000A
FLE6029A
FUC1600A
9 Connector Jack:
Mini UHF
BNC
5802810C15
5802810C16
10  O-Ring 5802810C15
11Power Cable Assembly0189484U01
12 Cap, Accessory Connector  3202607Y01
13 Chassis 25W 2789223U01 
						

							2-14MAINTENANCE
8.2 Control Head - CM140/CM340
Figure 2-13Control Head CM140/CM340
Ta b l e 2 - 2Control Head CM140/CM340 Parts List
Item noDescriptionPart No
1Control Head PCBFCN6288A
2Lens6189338U01
3Keypad7589330U01
4Control Head Plastic1589332U01
5Knob Spring (part of knob - item 6)
6Knob, Volume3689331U02
7Speaker5005156Z02
8Flat Cable (not shown)3089305U01 
						

							Radio Exploded Mechanical Views and Parts Lists 2-15
8.3 Control Head - CM160/CM360
Figure 2-14Control Head - CM160/CM360
Ta b l e 2 - 3Control Head CM160/CM360 Parts List
Item no Description Part No.
1Control Head PCBFCN5523A
2 Light Guide 6189624U01
3 Elastomeric Connector2802619S03
4 LCD Holder 0789623U01
5 LCD7202421H33
6 Keypad 7589340U01
7 Speaker 5005156Z02
8  Control Head Plastic 1589333U01
9 Knob Spring (part of Knob - item 10)
10 Knob  3689331U02
11  Lens:
CM160
CM360
6189339U06
6189339U01
12  Flat Cable (Not Shown) 3089305U01
1
2
34
56
7
8
9
1011 
						

							2-16MAINTENANCE
9.0 Service Aids
Table 2-4 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.
Ta b l e 2 - 4Service Aids
Motorola Part
No.Description Application
RLN4460_Portable Test SetEnables connection to audio/accessory jack. 
Allows switching for radio testing.
GMVN5034A Customer Programming 
Software (CPS) and Tuner 
CDROM (MDC)Programs customer options and channel data. 
Tunes hardware parameters, front end, 
power, deviation etc.
GMVN5033ACustomer Programming 
Software (CPS) and Tuner 
CDROM (5-Tone)Programs customer options and channel data. 
Tunes hardware parameters, front end, 
power, deviation etc.
RKN4081_ Programming Cable with 
Internal RIBIncludes radio interface box (RIB) capability.
FKN8096_Data/Flash AdapterUsed with RKN4081 (10 to 8 pin adapter for 
front Telco connector with CPS/Flash switch 
for programming/flashing only).
RKN4083_ Mobile Programming/Test Cable Connects radio to RIB (RLN4008_) via rear 
accessory connector
FKN8113_Adapter CableUsed with RKN4083 (20 to 16 pin adapter for 
rear accessory connector).
GTF374_ Program Cable Connects RIB to Radio microphone input.
RLN4008_Radio Interface BoxEnables communications between radio and 
computer’s serial communications adapter.
HLN8027_ Mini UHF to BNC Adaptor Adapts radio antenna port to BNC cabling of 
test equipment.
GPN6133_Power SupplyProvides the radio with power when bench 
testing. 
EPN4040_ Wall-Mounted Power Supply Used to supply power to the RIB (UK).
EPN4041_Wall-Mounted Power SupplyUsed to supply power to the RIB (Euro).
8180384N64 Housing Eliminator (25W) Test Fixture used to bench test the radio pcb. 
3080369B71Computer Interface CableConnects the RIB to the Computer (25-pin).
3080369B72 Computer Interface Cable Connects the RIB to the Computer (9-pin)
(Use for IBM PC AT - other IBM models use 
the B71 cable above).
6686119B01Removal ToolAssists in the removal of radio control head. 
						

							Service Aids2-17
WADN4055A Portable Soldering Station Digitally controlled soldering iron.
6604008K010.4mm Replacement TipFor WADN4055A Soldering iron.
6604008K02 0.8mm Replacement Tip For WADN4055A Soldering iron.
0180386A82Anti-static Grounding KitUsed for all radio assembly/disassembly 
procedures.
6684253C72 Straight Prober
6680384A98Brush
1010041A86 Solder (RMA type) 63/37, 0.5mm diameter, 2.2kg (1lb) spool.Ta b l e 2 - 4Service Aids
Motorola Part
No.Description Application 
						

							2-18MAINTENANCE
10.0 Test Equipment
Table 2-5 lists test equipment required to service the radio and other two-way radios.
Ta b l e 2 - 5Recommended Test Equipment
Motorola Part
No.Description Characteristics Application
R2600_NTComms System 
Analyzer (non MPT)This monitor will 
substitute for items with 
an asterisk *Frequency/deviation meter 
and signal generator for wide-
range troubleshooting and 
alignment
*R1072_ Digital Multimeter AC/DC voltage and current 
measurements
*R1377_AC Voltmeter100 µV to 300 V, 
5Hz-1MHz, 
10 Megohm input 
impedanceAudio voltage
measurements
 WADN4133 Delay 
Oscilloscope2 Channel 40 MHz 
bandwidth,
5 mV/cm - 20 V/cmWaveform measurements
R1440_
0180305F17
0180305F31
0180305F40
RLN4610_
T1013_Wattmeter,
Plug-in Elements
Plug-in Elements
Plug-in Elements
Carry case
RF Dummy LoadThruline 50-Ohm, 
±5% accuracy 
10W, 25 - 60 MHz
10W, 100 - 250 MHz
10W, 200 - 500 MHz 
Wattmeter and
6 elementsTransmitter power output 
measurements
S1339_ RF Millivolt Meter 100mV to 3 VRF, 
10 kHz to 1.2 GHzRF level measurements
R1011_/220V220V Power 
Supply0-40V, 0-40AProgrammable