Motorola B89 Service Manual page 27

Tri-band mobile telephone v.series 66 gsm 900/1800/1900 mhz & gprs technologies
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Level III Service Manual
6881038B20
3.
Lift the transceiver board assembly from the front housing. See Figure 13.
DISASSEMBLY TOOL
FRONT HOUSING
Figure 13. Removing the transceiver board assembly
4.
To replace, insert the transceiver board assembly into the front housing with
the flex connector on top. Ensure the keypad PCB is properly aligned with the
keypad.
Be sure the volume/smart buttons and voice button are correctly positioned in
relation to the corresponding switch contacts on the keypad PCB. Verify operation
of the buttons after replacing the transceiver board and rear housing.
5.
Insert the flex connector squarely into its mating connector on the transceiver
board and press firmly until it snaps into place.
6.
Replace the rear housing, light guide, antenna, and battery as described in the
procedures.
May 15, 2001
Disassembly
TRANSCEIVER BOARD
010429o
23

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