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RC-550L/LB
Disassembly
& Replacement
Rear Cabinet
2. Disconnect
the. 6-pin
connector
(B) and 6 single
1. Remove 7 screws (1)~(3): SDSP3020RS and (4)~(7):
connectors (C)~(H).
SDSB4030R.
(C):
Red wire from power supply section
2. Disconnect 3 connectors: white wire from rod antenna
(D): Black wire from power supply section
to the tuner circuit board, red wire from power supply
(E):
Black wire from common
line of level meter and
section to the battery terminal, and black wire from
dial light ©
shield to the amplifier circuit board.
(F):
Orange wire from divider circuit board
(G):
White wire from level meter
(H):
Brown wire from mid-range speaker
3. Release
the blue wire from condenser
microphone
by
straightening the wire holder (1).
4. Remove 6 screws (12)~(17): SBSB3012C.
Tuner Circuit Board
1. Set the tuning dial to the minimum frequency.
2. Take off the band selector and fine tuning knobs.
3. Disconnect
the
connector
(A)
from
the
amplifier
section.
4, Remove 4 screws (8)~(11): SBSB3012C.
Fig..42
Note:
Fit
the
arm
of
variable
capacitor
and
two
projections of dial drum when mounting the circuit
Amplifier & Control Circuit Boards Assembly
board on the cabinet. For details refer to page 13.
1. Remove
6 screws
(18)~(22):
SPSP2606Z
and (35):
DPSP3006ZS,
when the cassette mechanism
and ampli-
fier circuit board assembly has been taken out of the
cabinet.
2. Remove
6 screws
(12):
SBSB3010C
and
(18)~(22):
SPSP2606Z, when the cassette mechanism and amplifier
circuit board assembly has been mounted
on the cabinet.
3. Engage the projection of function switch lever and the
slider of function switch in place, when mounting the
circuit board on the mechanism.
Fig. 11
Cassette
Mechanism
& Amplifier
Circuit
Board
Assembly
1. Take
off
the
REC
LEVEL,
MIX
BALANCE,
bass,
treble and volume control knobs.
Fig. 13
_5-
No. 1384
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