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Screwdriver
ASSEMBLY
Assemble in the numerical order given as shown
right figure.
SECTION
3
SWITCH
DISASSEMBLY
AND ASSEMBLY
in the
@ Set the moving contact
slider to the left side.
DISASSEMBLY
Remove
by insenting screwdriver as shown
in the left
figure.
(Don't pull the wire. It causes malfunction.)
@ Turn switch knob so
that this position
becomes to the left
side fully.
t~
@ Note: Assemble $103 at the position
as shown in the figure.
SECTION 4
ELECTRICAL ADJUSTMENTS
Note: adjustment should be performed 5 minutes later, after the power
switch is on.
Offset Adjustment
Setting:
OPERATION switch:
STEREO
Input signal:
No signal input
Procedure:
speaker terminals
VOM
~~
(0.3 Vde range)
set |
Adjust RT401 (L-CH) and RT-451 (R-CH) for 0 V reading on the VOM.
Adjustment Location: MAIN (A) BOARD
Q402
Q403 La
WJ
Q401 \37
"2s
Q451
WwW
& Q452
453
RT401
Bias Current Adjustment
Setting:
OPERATION switch:
STEREO
Input signal:
No signal input
Procedure:
Adjust RT402 (L-CH) and RT-452 (R-CH) so that VOM reading of
TP-1 (L-CH), TP-2 (R-CH) become 35 mv.
;
Adjustment Location: MAIN (B) BOARD
VOM
VOM
(0.3 Vdc range)
(0.3 Vdc range)
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