SERVICE MANUAL
INTEGRATED AMPLIFIER
MODEL A-9377(B)/(S)
Black and Silver models
B CPP |
230 AC, 50Hz |
S CPP |
230 AC, 50Hz |
B CWT |
120/220-240V AC, 50/60Hz |
S CWT |
120/220-240V AC, 50/60Hz |
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK 
ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
A-9377
Ref. No. 4140
062009
RC-748S
EXPLODED VIEW
A39 |
Sxx |
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Sxx x 2 pcs. |
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x 17 pcs. |
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x 2 pcs. |
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A32
Sxx
x 2 pcs.<CWT>
E02
<CWT>
U01-3<CWT>
F202 F203<CWT>
F201
U01-2
E01 
x 4 pcs.
A-9377
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A38 |
A18 |
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<Note> |
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x 6 pcs. |
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A33 |
A31 |
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Sxx = NSP |
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Sxx |
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x 7 pcs. |
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Q737 |
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A50 |
Q738 |
BD702 |
Sxx |
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x 8 pcs. |
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A37 |
Sxx
x 4 pcs.
(NSP) (NSP)
Q737a
x 4 pcs.
A29
x 2 pcs.
P01a
Sxx
x 2 pcs.
Sxx
x 5 pcs.
A28
A27
Sxx
x 4 pcs.
A34
A35
A24
(T201)
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U01-1 |
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A36 |
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Sxx |
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x 2 pcs. |
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x 4 pcs. |
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Q739 |
Q740 |
E01 |
U02-1 |
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x 2 pcs. |
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Sxx |
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Sxx |
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Sxx |
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A40 |
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x 3 pcs. |
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x 2 pcs. |
U02-4 |
x 2 pcs. |
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A14 |
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A08 |
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Sxx |
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U02-2 |
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Sxx |
A05 |
x 4 pcs. |
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x 5 pcs. |
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U02-5 |
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A07 |
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DF-Tape |
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U02-3 |
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Sxx |
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A13 |
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x 2 pcs. |
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Sxx |
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Sxx |
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x 2 pcs. |
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x 2 pcs. |
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A10 |
A06 |
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A09 |
x 3 pcs. |
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A02 |
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DF-Tape |
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A20 |
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A01 |
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A21 |
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A04 |
A03 |
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Sxx |
x 5 pcs. |
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x 4 pcs. |
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x 3 pcs. |
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A19 |
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A41 |
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x 4 pcs. |
For SPEAKERS |
x 2 pcs. |
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Sxx |
-A |
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and REC SELECTOR |
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A22 |
9377 |
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A23 |
x 4 pcs. |
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x 2 pcs. |
x 3 pcs. |
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A-9377
A |
B |
C |
D |
E |
F |
G |
H |
BLOCK DIAGRAM |
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1 |
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2 |
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3 |
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4 |
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5 |
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A-9377 |
A |
B |
C |
D |
E |
F |
G |
H |
SCHEMATIC DIAGRAM-1 |
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MAIN |
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1 |
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2 |
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0.22/50 |
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3 |
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4 |
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5 |
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A-9377
A |
B |
C |
D |
SCHEMATIC DIAGRAM-2
POWER
1
2
3
4
ST RLY
+7.6V(ST/BY)
P/D
GND
5
A-9377
A |
B |
C |
D |
E |
F |
G |
H |
SCHEMATIC DIAGRAM-3 |
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FRONT |
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1 |
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2 |
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0.22/5.5 |
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3 |
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4 |
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5 |
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A-9377 |
A |
B |
C |
D |
E |
F |
G |
H |
WIRING VIEW |
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1 |
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2 |
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CWT Version |
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3 |
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4 |
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5 |
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PACKING PROCEDURE
P09
P02
<L>
Top side marking
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T |
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TOP |
Left side |
PO |
L |
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L |
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marking |
FRONT |
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Front side marking
Front side
P01
A- 9377
Front side
A-9377
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P12 |
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P10 |
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P13 |
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P11 |
<CPP> |
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x 2 pcs |
P14 |
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<CPP> |
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P16 |
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P05 |
<CPP> |
P15 |
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<CWT> |
P17 P18
<CPP> <CWT>
P04
P05
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P02 |
R |
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<R> |
OT |
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P |
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TOP |
Top side |
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R |
marking |
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FRO |
NT |
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Right side |
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marking |
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Front side |
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marking |
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P06-d |
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P07 |
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A |
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- |
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77 |
|
9377 |
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A |
-93 |
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A- |
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9377 |
-9377 |
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A |
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P07
P06a-d
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