Motorola Cp185 Basic 68007024004 Manual

							Maintenance – CP185: Disassembling and Reassembling the Radio – General 6-11
6.4.2 Radio Reassembly – Detailed
6.4.2.1  Speaker Reassembly
1.Place the Speaker Felt (9) onto the grille area.
2.Align the speaker wire at three oclock position and push down the speaker until fully adhere onto 
the front housing.
3.Align the Speaker Insulator (12) at twelve oclock position and push down until fully adhere onto 
the speaker.
4.Install the Speaker Retainer (11).
5.Tighten the Speaker Retainer to the housing with a Phillips screwdriver torque to 
0.86 Ib-in – 1.04 lb-in. (Refer Table 6-1 on page 6-14 for torque in other units).
6.4.2.2  Front Circuit Board, Display Module and Keypad Reassembly
1.Place and align the LCD (38) onto the front housing.
2.Place and align the Keypad (43) onto the keypad slot. Apply force around the keypad and ensure 
the keypad sealing rib is perfectly seated onto the keypad slot. (Refer Figure 6-14).Figure 6-13.  Speaker Reassembly
Figure 6-14.  LCD and Keypad Reassembly
Speaker Retainer
Speaker 
Speaker Felt
Speaker Insulator
LCD
Keypad Poron Pad
Keypad 
						

							6-12Maintenance – CP185: Disassembling and Reassembling the Radio – General
3.Place the Front Circuit Board (41) straight down on top of the LCD and keypad. Align the front 
circuit board to the four housing ribs. Press the top right edge of the front circuit board to ensure 
the microphone sealing rubber is fully seated in place.
4.Tighten the five screws holding the front circuit board with a Phillips screwdriver torque to 
1.04 Ib-in – 1.30 Ib-in. (Refer Table 6-1 on page 6-14 for torque in other units).
5.Insert the LCD flexible cable into the connector on the front circuit board.
6.Push the latches into the connectors.
6.4.2.3  Chassis Assembly Reassembly
1.Fit the Battery Contact Seal (28) onto the battery contact slot.
2.Fit the main O-ring (24) onto the chassis as follow:
a. Ensure that the main O-ring is not twisted. Untangle to original form if necessary.
b. Secure A into the bottom two notches on the chassis. (Refer Figure 6-16).
c. Fit the bottom section of the main O-ring around the bottom two grooves.
d. Insert B into the top two catches on the chassis.
e. Fit the top section of the main O-ring around the top two corners of the chassis.
f. Secure C into the remaining three notches on the chassis.
3.Place the main circuit board straight down on top of the chassis.  
4.Tighten the six screws holding the main circuit board with a Phillips screwdriver torque to 
1.91 lb-in – 2.17 Ib-in. (Refer Table 6-1 on page 6-14 for torque in other units).Figure 6-15.  Front Circuit Board Reassembly
Note:
Make sure the battery contact seal protrudes through the chassis and is not
squeezed under the chassis. Ensure the O-ring is also not squeezed under main
circuit board.
Circuit Board 
						

							Maintenance – CP185: Disassembling and Reassembling the Radio – General 6-13
5.Tighten the RF Support Screw (20) with a flat head screw torque to 1.91 Ib-in – 2.17 Ib-in. 
(Refer Table 6-1 on page 6-14 for torque in other units).
6.Insert the Sub Circuit Board Flexible Cable (15) into the respective connectors at the top of the 
main circuit board.
7.Push the latches into the connectors.
8.Place the sub circuit board straight down on top of the chassis. 
9.Tighten the screw that is holding the sub circuit with a Phillips screwdriver torque to 
1.91 Ib-in – 2.17 Ib-in. (Refer Table 6-1 on page 6-14 for torque in other units).
10.Tighten the two nuts on the On/Off Volume Knob and Channel Knob Shafts with the Crab Eye Nut 
Opener.
11 .Align and Insert the Accessory Bracket (35) into the audio jack hole. (Refer Figure 6-17).Figure 6-16.  Main Circuit Board, O-ring and Battery Contact Seal Reassembly
Figure 6-17.  Sub Circuit Board and Accessory Bracket Reassembly
AB
C
Accessory Brackets
Audio Jack 
						

							6-14Maintenance – CP185: Torque List
6.4.2.4  Chassis and Front Housing Reassembly
1.Assembly the chassis assembly to the Front Housing Assembly (1) as follow:
a. Lay the chassis assembly beside to the Front Housing Assembly.
b. Insert the Flexible Cable (39) from the main circuit board into the connector on the front 
circuit board.
c. Push the latches into the Front Housing Assembly.
d. Connect the speaker wire to the connector.
2.Slide the On/Off Volume Knob Shaft into their respective holes in the front cover.
3.Insert the top chassis tabs into the recesses on the front cover and apply some force until the tabs 
are fully inserted.
4.Be sure the O-ring (24) is properly seated so that the radio is properly sealed.
5.Snap the bottom of the chassis into the front housing.
6.Reassemble the Knobs (7,8), Dust Cover (42), Antenna (22), and Battery (31). 
(Refer Figure 6-18).
6.5 Torque List
Table 6-1 lists the various screws by part number and description, followed by the torque values in 
different units of measure. Torque all screws to the recommended value when assembling the radio. Note:
For re-use Flexible Cable (39), please ensure that it is properly folded. For new 
Flexible Cable (39), please ensure pre-folded flexible cable was provided and used.
Figure 6-18.  Chassis Assembly and Front Housing Assembly Reassembly
Table 6-1.  Torque Chart
Part Number Description QuantityTorque
N-m Ib-in kgf-cm
PMDN4099_R Retainer, Speaker, with screw 1 0.11±0.01 0.95±0.09 1.10±0.10
PMDN4119_R Screw, Tapping 5 0.13±0.01 1.17±0.13 1.35±0.15
PMDN4107_R Screw, Machine 7 0.23±0.01 2.04±0.13 2.35±0.15
PMDN4114_R Screw, RF Support 1 0.23±0.01 2.04±0.13 2.35±0.15
Radio Chassis 
						

							Maintenance – CP185: Mechanical View and Parts List 6-15
6.6 Mechanical View and Parts List
6.6.1 CP185 View and Parts List
Figure 6-19.  CP185 Exploded View
78
6
5
416
1 2
39101112
13
14
1517
1819
20 2122
23
242526272829
30
31
32
33 34
35 36
37 38
39
40 41
42 43
44 
						

							6-16Maintenance – CP185: Mechanical View and Parts List
Item Motorola Kit Number Description Quantity
1PMDN4097_RFront Housing, Limited Keypad1
2 PMDN4096_R Name Plate (CP185) 1
3PMDN4124_R Double Molded Cover, PTT 1
4 PMDN4089_R Seal, Volume and Channel Knob  1
5PMDN4088_RAdhesive, Top Control 1
6 PMDN4103_R Escutcheon, Top 1
7PMDN4102_RKnob, Volume1
8 PMDN4101_R Knob, Channel 1
9PMDN4100_RFelt, Speaker1
10 PMDN4067_R Speaker 1
11PMDN4099_RRetainer, Speaker, with screw1
12 PMDN4098_R Insulator, Speaker 1
13PMDN4135_RSeal, Microphone1
14 PMDN4139_R Microphone 1
15P M D N 4 111 _ RFlexible Cable, Sub Circuit Board 1
16 PMDN4128_R Sub Circuit Board, w Channel 1
17PMDN4112_RCrab-Eye Nut, Volume and Channel2
18 PMDN4134_R Switch, Tact 3
19*PMDE4023_R
PMDD4020_RMain Circuit Board (CP185 – PMUE3139_AN)
Main Circuit Board (CP185 – PMUD2444_AN)1
20 PMDN4114_R Screw, RF Support 1
21PMDN4138_RBracket, Antenna1
22 See Appendix A Antenna 1
23PMDN4137_RFinger Strip, PCB1
24 PMDN4116_R O-ring 1
25PMDN4120_RFinger Strip, Chassis2
26 PMDN4121_R Pad, Thermal  1
27PMDN4122_RChassis1
28 PMDN4105_R Seal, Battery Contact 1
29PMDN4110_RLabel, Caution 1
30 See Appendix A Belt Clip 1
31See Appendix ABattery1
32 PMDN4028_R Tuning Hole Sticker (Small) 1
33PMDN4106_RGel Pad, Ceramic Filter1
34 0915184H01 Contact, Battery 1
35PMDN4108_RBracket, Accessory1
36 0980683Z01 Jack, Audio 1 
						

							Maintenance – CP185: Mechanical View and Parts List 6-17
Note: 
*This kit consists of tact switch, antenna bracket, PCB finger strip, battery contact and audio jack.
‡This kit consists of microphone and microphone seal.
37PMDN4107_RScrew, Machine7
38 PMDN4123_R Module, Liquid Crystal Display  1
39PMDN4109_RFlexible Cable, Main Circuit Board 1
40 PMDN4119_R Screw, Tapping 5
41‡PMDN4131_RFront Circuit Board, LKP1
42 PMDN4113_R Cover, Dust 1
43PMDN4118_RKeypad, Limited Keypad1
44 PMDN4117_R Pad, Poron 1
Item Motorola Kit Number Description Quantity 
						

							6-18Maintenance – CP185: Mechanical View and Parts List
Notes 
						

							Chapter 7 Troubleshooting Tables
7.1 Error Codes
The radio performs cursory tests to determine if its basic electronics and software are in working 
order, during start-up and during operations. Problems detected during these tests are presented as 
error codes on the radio display. The presence of an error code should prompt the user that a 
problem exists and that a service technician should be contacted. Use Table 7-1. to aid in 
understanding particular error code display.
Table 7-1.  Error Code Display
Error Code Possible Causes Corrective Action
PLLERRORPLL Unlock Error – Radio 
cannot receive or transmit on 
the programmed 
frequencies.Reprogram codeplug with correct version and retest 
radio. If message reoccurs, replace main board or send 
radio to nearest Motorola Service Centre
FATALERR Radio Fatal Error – Codeplug 
is corrupted.Reprogram codeplug with correct version and retest 
radio. If message reoccurs, replace main board or send 
radio to nearest Motorola Service Centre.
SLFTFAIL
Self Test Fail – Radio failed 
to initialize during start
-up. 
Retest the radio by turning it off then on again. If 
message reoccurs, replace main board or send radio to 
nearest Motorola Service Centre.
ERROR Clone Error – Cloning 
between source and 
destination radios failed.Check the connection between source and destination 
radios.
Make sure follow the correct cloning procedures.
If message reoccurs, send radio to nearest Motorola 
Service Centre.
TIME OUT
Time Out Error – No 
communication between 
source and destination 
radios during cloning.Check the connection between source and destination 
radios.
Make sure follow the correct cloning procedures.
If message reoccurs, send radio to nearest Motorola 
Service Centre.
CS ERROR Checksum Error Reprogram codeplug.
TYPE ERR
Mismatch Radio Type Error – 
Different source and 
destination radio models.Retest by connecting same source and destination radio 
model. 
COMM ERR Communication Error – 
Cloning between source and 
destination radios failed.Check the connection between source and destination 
radios.
Make sure follow the correct cloning procedures.
If message reoccurs, send radio to nearest Motorola 
Service Centre.
No Display
Display module is not 
connected properly. Display 
module is damaged.Check the connection between main board and display 
module. 
Replace with new display module.
ERR-EEP EEPROM Error – 
Codeplug is corrupted.Reprogram codeplug with correct version and retest
radio. If message reoccurs, replace main board or send
radio to nearest Motorola Service Centre. 
						

							7-2Troubleshooting Tables: Troubleshooting Table for Receiver
7.2 Troubleshooting Table for Receiver
 Table 7-2. lists the possible causes of, and corrections for, receiver problems.
Table 7-2.  Receiver Troubleshooting Table
Symptom Possible CausesCorrective or Test
(Measurements at Room Temperature)
Radio Dead; Display Does 
Not Turn On1. Dead BatteryReplace with charged battery.
2. On/Off Switch Send radio to nearest Motorola Service Centre.
3. Regulators
4. Regulator fault
Radio Dead; Display Turns 
On
Transceiver BoardSend radio to nearest Motorola Service Centre.
No Receive Audio, or 
Receiver Does Not UnmuteProgramming 1. Does the transmitted signal match the receiver 
configuration (PL, DPL, etc.)?
2. With the monitor function enabled, can the radio be 
unmuted?
Audio Distorted or Not Loud 
EnoughSynthesizer Not On 
FrequencyCheck synthesizer frequency by measuring the transmitter 
frequency; realign it off by more than ±150 Hz (VHF), 
±500 Hz (UHF)
RF Sensitivity Poor 1. Synthesizer Not on 
FrequencyCheck synthesizer frequency by measuring the transmitter 
frequency; realign it off by more than ±150 Hz (VHF), 
±500 Hz (UHF)
2. Antenna Switch/
ConnectorSend radio to nearest Motorola Service Centre.
3. Receiver Front End 
TuningCheck RF front
-end tuning for optimum sensitivity using 
the tuner.
Radio Will Not Turn OffTransceiver BoardSend radio to nearest Motorola Service Centre.