Motorola PRO7150 Manuel d'entretien de base - Page 23
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Radio Disassembly — Detailed
CAUTION: Refer to the CMOS CAUTION in paragraph 3.3 before removing the main board.
!
Be sure to use ESD protection when handling circuit boards.
3. Remove the small O-ring retainers from their slots in the chassis. Note the alignment of the
retainers for reassembly.
4. Remove the O-ring.
5. (VHF, UHF, and lowband only) If required in disassembly, slide off the ground contact from the top
corner boss of the radio chassis.
3.6.3 Keypad and Keypad/Option Board Disassembly
1. If the disassembly of the keypad or the keypad printed circuit board, is required, lift the
microphone flex circuit up, and carefully remove the microphone and its boot from the front cover
pocket as shown in Figure 3-6.
2. Lay this flex circuit to one side.
3. To remove the keypad retainer shield, Insert the tip of a "penknife size," flat blade screwdriver in
the opening at the end of the keypad retainer arm tab. Pry the tab away from the side of the front
cover until it moves past the ledges on the side wall. Repeat this procedure for the four remaining
retainer arm tabs.
4. Note that for the PRO series, with the exception of the PRO9150, the two "top hooks" are still held
underneath the front cover—right below the speaker. Lift the keypad retainer out of the front
cover, then lift and pivot the two hooks out of the front cover.
5. Lift latch on connector located on the keypad board to release the display flex.
6. The keypad/option board and the keypad can be removed without the use of tools
NOTE At this point, the Option Board Installation Procedure should be performed, if
necessary (See paragraph 3.7.8)
Speaker-Microphone
Flex Circuit Tail
Keypad Retainer
Arm Tabs (4)
Retainer
Top Hooks
Figure 3-6. Retainer Removal
Flat Blade
Screwdriver
Retainer
3-7