Service manual

5. Gently push the center bottom edge of the front
shield assembly and lift it away from the bottom
of the chassis. If necessary, use a small slotted
screwdriver to disengage the two retaining clips
near the bottom outer edges. Next, pull the front
shield assembly out from under the plastic top
panel. Be careful not to pull against the flexible cir-
cuits connecting to the controller board.
6. Disconnect the display flexible circuit (Models II
and III only) and the speaker/microphone flexi-
ble circuit from the controller board by pulling the
respective connector plugs out and away from the
controller board and shield assembly. The connec-
tor plugs are covered with a protective rubberized
pad. Also, disconnect the control top/PTT flexi-
ble circuit from the controller board by pulling up
and rotating the flex connector plug out and away
from the controller board and shield assembly.
The connector plug is covered with a protective
rubberized pad.
7. Using a ROTO-TORQ adjustable screwdriver tool
with a Phillips bit #0 point size (Motorola part num-
ber 66-80321B86), remove the four controller
shield screws. Next, gently pry the controller
shield up and out of the chassis by inserting the
tip of a thin slotted screwdriver between the chas-
sis and the controller shield at each of the three
thin-walled chassis points (see diagram below).
After the controller shield is freed, remove
the controller board from the chassis by gently
applying upward pressure on the black 15-pin
connector.
20
CHASSIS
ASSEMBLY
TOP PANEL
FRONT SHIELD
ASSEMBLY
MAEPF-23375-O
DISPLAY FLEXIBLE CIRCUIT
CONNECTOR PLUG (MODELS II AND III)
SPEAKER/MICROPHONE
FLEXIBLE CIRCUIT
CONNECTOR PLUG
CONTROL TOP/ PTT
FLEXIBLE CIRCUIT
CONNECTOR PLUG
MAEPF-23376-O
CAUTION
To avoid damage to the control top/PTT flexible
circuit, DO NOT insert the screwdriver tip near
the flexible circuit connector or the dual-function
switch. Insert the tip of the slotted screwdriver
only at the thin-walled chassis points shown
below.
CHASSIS
CASTING THIN
WALL POINTS (3)
CONTROLLER
BOARD
(UNDER SHIELD)
DUAL-FUNCTION
SWITCH HOUSING
MA
E
CONTROLLER SHIELD
SCREWS (4)
CONTROLLER
SHIELD
66-80321B86
PHILLIPS BIT
15-PIN
CONNECTOR
(THIS END)
MAEPF-23377-O