Motorola Radio Mcs2000 Vol 1 68p81083c20 A Manual

 
Disassembly & Reassembly and Replacement Procedures 5-5 
3. Carefully remove the transceiver board by rotating it out of the chassis. 
Slowly lift the board on the front edge while pushing up on the board 
through the accessory connector opening. Pull the board forward out of 
the chassis.  
M 
ID 
 P 
OWER 
 M 
ODELS 
1. Remove the Accessory Connector by sliding a Þnger into the recess on 
the chassis and pushing up on the connector tab to loosen the 
connection. Lift the connector out of the recess....

 
5-6 Disassembly & Reassembly and Replacement Procedures 
Remove the 
Transceiver Board 
800 MH 
Z 
  
AND 
 900 MH 
Z 
 
M 
ODELS 
 O 
NLY 
1. Remove the Accessory Connector by sliding a Þnger into the recess on 
the chassis and pushing up on the connector tab to loosen the 
connection. Lift the connector out of the recess.
2. Remove all screws using a T-10 TORX driver.
3. Remove the power and antenna connector retaining clips by inserting a 
small ßat blade screwdriver between the clip and the top of...

 
Disassembly & Reassembly and Replacement Procedures 5-7 
Disassembly to Transceiver Board Level
High Power Models 
DO NOT attempt to disassemble the radio without Þrst referring to the 
CMOS Precautions paragraph on page 2-2 in the Maintenance section. 
Remove the 
Bottom Cover 
1. Disconnect the Remote Mount Cable by squeezing the top and bottom 
of the connector together, disengaging the bottom snap then the top, 
and pulling straight out.
2. Flip the unit over so that the Bottom Cover is facing up....

 
5-8 Disassembly & Reassembly and Replacement Procedures 
4. Insert a wide ßat-blade screwdriver or like instrument in the recess area 
on the side of the radio near the antenna and power connector ends (see 
Figure 5-11).
5. Pry the bottom cover off the chassis by pushing the handle of a 
screwdriver up and toward the radio. This will disengage the snap 
between the bottom cover and the chassis.
6. Repeat Step 4. and Step 5. for the other side of the radio.
7. Rotate the bottom cover out and away from...

 
Disassembly & Reassembly and Replacement Procedures 5-9 
Remove the PA 
Shield 
1. Pull straight up on the PA shield using the supplied handle. 
Figure 5-13    Removing the PA Shield 
Remove the PA 
Board 
1. Unscrew the 6 recessed, PA device screws using a T-8 Torx driver. 
Unscrew the remaining screws (9 for VHF, 11 for UHF) using a T-10 Torx 
driver.
2. Remove the power and antenna connector retaining clips by inserting a 
small ßat-blade screwdriver between the clip and the underlying cavity 
wall...

 
5-10 Disassembly & Reassembly and Replacement Procedures 
Remove the RF 
Board 
1. Remove the 18 position connector by pulling it straight out from the 
chassis taking care not the bend the leads.
2. Remove the Audio PA Clip by inserting a ßat-blade screwdriver under the 
clip«s extended tab, pivoting off the top of the underlying wall, and 
gently prying the clip upward.
3. Unscrew the 7 screws that hold the RF board in place using a T-10 Torx 
driver.
4. Carefully remove the RF board from the chassis...

 
Disassembly & Reassembly and Replacement Procedures 5-11 
Disassembly of the Control Head 
Remote Mount 
Versions 
1. Disconnect the Remote Mount Cable by squeezing the top and bottom 
of the connector together, disengaging the bottom snap then the top, 
and pulling straight out.
2. Remove the back housing by inserting a small ßat-blade screwdriver or 
like instrument into the recess on the short side of the control head 
exterior, taking care not to mar the surface. Rotate the screwdriver so 
that the...

 
5-12 Disassembly & Reassembly and Replacement Procedures 
4. 
On Model II 
, also remove the rotary knob on the right side of the unit 
by pulling straight up.
5. Remove the control head board by prying back on the four visible light 
pipe snaps. Carefully remove the board from the housing. Gently pull 
the board straight up so not to damage the volume potentiometer and 
the microphone connector leads.
6. The light pipe can be removed by prying back on its plastic snaps from 
the recesses in the...

 
Disassembly & Reassembly and Replacement Procedures 5-13 
Reassembly
 of the Control Head 
Model I1. Place the LCD, colour sheet, LCD frame, and elastomeric connector into 
the housing. Make sure that the LCD aligns with the gasket in the 
housing.
2. Place the keypad into the board assembly, making sure that the keypad is 
ßush with the board.
3. Make sure that both the volume knob and potentiometer are both fully 
in the counter clockwise position before assembling the board into the 
housing.
4....

5-14 Disassembly & Reassembly and Replacement Procedures
Transceiver Reassembly
Low and Mid Power Models
Transceiver Reassembly
¥ Replace all gaskets at each servicing to ensure proper sealing of unit.
¥ Be careful to use only very little thermal grease as an excessive quantity 
will deteriorate the conductivity.
1. Inspect and reapply thermal grease as needed to the areas shown in 
Figure 5-16.
Figure 5-16    Reassembly
2. Insert the diode spring. 
3. Install a new gasket to the 25 pin connector,...