Motorola Cdm Series Basic 6881091c62 D Manual

Introduction1-3
Fax Orders
Customer Care and Services Division*
1-800-622-6210
847-576-3023 (International)
USFGMD
(Federal Government Orders)
1-800-526-8641 (For Parts and Equipment Purchase Orders)
Parts Identification
Customer Care and Services Division*
(United States and Canada)
1-800-422-4210, menu 3
Product Customer Service
Customer Response Center*
(Non-technical Issues)
1-800-247-2346
FAX:1-800-247-2347
*The Customer Care and Services Division (CCSD) was formerly known as the Accessories and...

1-4Introduction
1.3 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.
Example: AAM25RHC9AA1AN
Table 1-1:  Radio Model Number 
Ty p e  
of 
UnitModel 
SeriesFreq. 
BandPower 
LevelPhysical 
PackagesChannel 
SpacingProtocolFeature 
LevelModel
RevisionModel...

2-1
Chapter 2
Maintenance
2.1 Introduction
This chapter provides details about the following:
lPreventive maintenance (inspection and cleaning) 
lSafe handling of CMOS and LDMOS devices
lDisassembly and reassembly of the radio
lInstallation of optional retrofit kit
lInstallation of option boards
2.2 Preventive Maintenance
The radios do not require a scheduled preventive maintenance program; however, periodic visual 
inspection and cleaning is recommended.
2.2.1 Inspection
Check that the external surfaces...

2-2Maintenance
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. After completing 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 back cover.
2.3 Safe Handling of CMOS and LDMOS Devices...

Maintenance2-3
Rigid Circuit Boards
This 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 printed-through holes may interconnect multiple layers of the printed circuit. Therefore, exercise 
care to avoid pulling the plated circuit out of the hole.
When soldering near the 20-pin and 40-pin connectors: 
lAvoid accidentally getting solder in the connector....

2-4Maintenance
Figure 2-1:  Typical Control Head Removal
3. Pull the control head away from the radio assembly as shown in Figure 2-2.
Figure 2-2: Flexible Connection Removal
4. Remove the flexible connection from the socket on the control head board.
2.6.2 Top Cover Removal
1. Insert the dismantling tool in the middle of the radio assembly side groove as shown in Figure 2-3.
2. Press on the dismantling tool until the snap connectors on the side of the cover release from the 
radio chassis.
Dismantling...

Maintenance2-5
3. Lift the top cover from the chassis.
Figure 2-3: Top Cover Removal
2.6.3 Transceiver Board Removal
1. Remove six screws (nine for LowBand) from the diecast cover using the T20 TORX™ driver as 
shown in Figure 2-4.
2. Lift the cover from the chassis.
Figure 2-4: Diecast Cover Removal
Dismantling 
Tool
Diecast
Cover
Screws (6 or 9)
Radio 
Chassis 

2-6Maintenance
3. Slowly lift the transceiver board on the edge at the front of the radio (the edge that mates with the 
control head) and pull gently toward the front of the radio as shown in Figure 2-5. Take care to 
slide the antenna connector and power connector out of the chassis towards the front.
Figure 2-5: Transceiver Board Removal
2.6.3.1 LowBand Transceiver Board Removal
1. Remove the Control Head and Top Cover as directed in Sections 2.6.1 and 2.6.2 of this Manual.
2. Using the T20 TORX™...

Maintenance2-7
device may have been over-stressed as well. Handle the transceiver board per the procedure for 
“Safe Handling of CMOS and LDMOS Devices”, Section 2.3.
2. If removing the transceiver board, the thermal pad material under the two Final stage devices 
(Q1402 and Q1403) on the radio chassis has been pulled up such that the radio chassis is 
exposed through the thermal pad, then the defective thermal pads must be removed and 
replaced. This is only true for the case when the Final stage...

2-8Maintenance
Figure 2-6: Control Head Back Housing Removal
2. Press the dismantling tool until the snap connectors on the side of the back housing release from 
the control head.
3. Disconnect the speaker socket.
Figure 2-7: Control Head Board Knob Removal
4. Remove the board from the control head housing by stretching the control head housing and pull-
ing up on the board as shown in Figure 2-7 and Figure 2-8.
5. Remove the keypad from the control head housing by lifting up the rubber keypad.
Note:
DO...