Sanyo M9998LU - Page 3

A eee Pan Head Tapping Screw 3 x 30mm
B ..... Pan Head Tapping Screw 3 x 40mm
(3) Removing the printed circuit board * Before checking or repairing the AMP PCB or tuner/
(Referring only the AMP PCB and tuner/switch PCB) switch PCB, make sure other smaller PCBs (INPUT
PCB, OUTPUT PCB, OSCILLATION PCB, AMSS
Amplifier
PCB
PCB,
VR
PCB)
are
properiy
connected.
To dismount the AMP PCB, take off 5 screws (pan
head tapping screw w/washer 3 x 12 mm) and 2 lugs,
136 and 138 (for shaping up the leads), from the
chassis. Since the AMP PCB is connected to the tuner/
switch PCB with plugs, it can be separated off by pull-
ing it toward you.
NOTE:
When mounting the AMP PCB, assemble with care so
that the AMP side plug may be fitted well with the
tuner side socket.
Switch/tuner PCB j
After dismounting the AMP PCB, take off three screws
(a pan head tapping screw w/washer 3 x 8 mm, two
pan head tapping screws 3 x 8 mm) from the tuner/
switch PCB. Remove the hexagon head bolt (2.6 x 16
mm) from the dial drum (66) and separate the spring
coil (67) for rope threading from the drum. Glue with
adhesive cellophane tape, and pull toward the outside,
then the switch/tuner PCB will come out loose. Pull
out the PCB along the chassis groove with care not to
damage the leads, then the disassembly is complete.
TUNER SW PCB '
i
Pt
\L dos. 220
NOTE:
When dismounting the tuner/siwtch PCB, be careful ©
not to separate the connection bandy cord from the
amplifier PCB.
NOTE:
When reassembling the chassis into cabinet, arrange the
leads aming from the VR PCB as illustrated above. \\
Unless arranged as specified, the cahssis may not settle
home in the cabinet or the leads may be pinched and
cut by the chassis and cabinet.
pais