Motorola Mt1500 Basic 6881094c09 B Manual

Disassembly/Assembly
43 4. Pull the 16-Position Select and the On/Off/Volume Control knobs off their shafts 
using the Chassis Opener tool.
5. After you remove the On/Off/Volume Control knob, remove the Teflon
® washer 
and set it aside.
6. Separate the chassis from the front cover by inserting the chassis opener between the 
thin, plastic retaining wall and the metal chassis at the bottom of the radio.Figure 28.  Knob Removal
Be careful not to mar the O-ring sealing area on the housing. Marring 
the...

Disassembly/Assembly
447. Slowly pry the bottom of the chassis away from the front cover by pushing the chassis 
opener tool down. Rotate the handle of the tool over and behind the base of the radio. 
This prying action forces the thin inner plastic wall toward the base of the radio, 
releasing the two chassis tabs.
8. Remove the chassis assembly by holding the chassis in one hand while slowly, with a 
firm side-to-side motion, removing the chassis.
9. Lay the chassis down. Rotate the front cover...

Disassembly/Assembly
45 10. Carefully lift the latches on the main circuit board to release the flexible circuits from 
their connectors.
NOTE:For proper reassembly, note how the flex circuits are 
folded.
11. Remove the concentric lever from the front cover assembly. 
Chassis 
DisassemblyFor this section, please refer to the Model III exploded view and parts list on page 35 for 
part numbers and more information on the location of parts in the radio.
1. If disassembly of the chassis or the main board is...

Disassembly/Assembly
464. Most repairs to the main board can be performed without further disassembly of the 
chassis. If it is necessary to replace the O-ring, remove the small O-ring retainers 
from their slots in the chassis. Note the alignment of the retainers for reassembly. 
5. Remove the O-ring.
Backup Battery 
DisassemblyFor this section, please refer to the Model III exploded view and parts list on page 35 for 
part numbers and more information on the location of parts in the radio.
1. The...

Disassembly/Assembly
47
Keypad and 
Keypad/Option 
Board DisassemblyFor this section, please refer to the Model III exploded view and parts list on page 35 for 
part numbers and more information on the location of parts in the radio. (For the Model II 
keypad, please refer to the exploded view and parts list on page 34.) 
1. The keypad and keypad board can be disassembled without the disassembly of the 
display or speaker/microphone flex assembly.
2. If the disassembly of the keypad or the keypad printed...

Disassembly/Assembly
485. Lift the keypad retainer out of the front cover.
6. The keypad/option board and the keypad can be removed without the use of tools.Figure 34.  Retainer Removal
Figure 35.  Keypad Retainer and Boards Removal 

Disassembly/Assembly
49
Display 
DisassemblyFor this section, please refer to the Model III exploded view and parts list on page 35 for 
part numbers and more information on the location of parts in the radio. (For the Model II 
display, please refer to the exploded view and parts list on page 34.) 
1. The display assembly can be removed without the disassembly of the keypad board or 
the speaker-microphone flex assembly. If the disassembly involves the removal of the 
display module, disconnect the...

Disassembly/Assembly
50
Speaker, 
Microphone, and 
Universal Connector 
Flex DisassemblyFor this section, please refer to the Model III exploded view and parts list on page 35 for 
part numbers and more information on the location of parts in the radio. 
1. The speaker-microphone assembly can be removed without the disassembly of the 
display or the keypad assemblies. If disassembly of the speaker-microphone assembly 
is necessary, removal of the universal connector dust cover is optional (see Figure 23...

Disassembly/Assembly
51 NOTE:There are notches on the ends of the 13-pin printed 
circuit backer board. If necessary, you can insert a small 
screwdriver in one of the notches to pry the backer board 
away from the front cover.
After the universal connector portion of the speaker-microphone flex circuit is 
detached, the assembly can be completely removed. If it is necessary to replace the 
speaker or the microphone, or both, do it while the flex circuit is removed from the 
front cover.
PTT...

Disassembly/Assembly
52
Radio 
Reassembly—
DetailedThe following steps describe how to reassemble the radio. This includes the following 
major components:
PT T
Keypad/option board
Display
Speaker, microphone, universal connector flex
Chassis
Backup Battery
Chassis and front cover
PTT Reassembly1. Put the PTT seal in the PTT bezel.
2. Align the PTT bezel and seal to the front cover housing so that the bottom tabs will 
engage with the opening in the front cover.
3. Slide the PTT bezel down so that...