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A-9355
Ref. No. 3982
032007
SERVICE MANUAL
INTEGRATED AMPLIFIER
MODEL A-9355
RC-627S
Black, Silver and golden models
B MPP 230V AC, 50Hz
S MPP 230V AC, 50Hz
G MGT 220-230V AC, 50/60Hz
G MDT 120V AC, 60Hz
G MGR 220-230V 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-9355
EXPLODED VIEW A142
W901
P101A
x 2 pcs. A145
x 6 pcs.
A037
A200
A206 A517
x 2 pcs. U08 A9000
A516
A203
x 17 pcs.
A9000 A004 U03
U10 P5107 x 8 pcs.
P9901 P5106 A519
x 2 pcs. x 2 pcs.
R5824 A001
F903 P5004C U01
P940 U05
x 8 pcs. P9902 A124
U13
P991 A121
U12 A118
F901 U06 A127
U07
U09 A116
A100 A130 x 4 pcs.
A007
U14 A016 x 2 pcs.
x 2 pcs.
T911 A013
x 2 pcs. A103
P953 x 4 pcs.
x 2 pcs. A022 U02 A019
x 5 pcs. A115
A518 A106
A025
A112
A136 x 2 pcs.
A028 A110
x 4 pcs. x 8 pcs. A109
A139
A031 x 3 pcs.
x 4 pcs.
A-9355
A027 A034
A026 x 13 pcs.
x 4 pcs.
A-9355 A-9355
A B C D E F G H
SCHEMATIC DIAGRAMS-1
PRE-AMPLIFIER SECTION
NAAF-9280 U08 PRE-AMPLIFIER PC BOARD Q951
NAAF-9259
R151 +14.5V 2SA1358 R961 U13 TONE CONTROL PC BOARD
470/35 470/35
R123
R137
R965
R963 1.2K
22(1/4W)
R111
R109
+
3.3K
C125
820
3.3K
22(1/2W)
820
R107
EQ. AMP.
4.7K
R331
1 22(1/2W) +7V
4.7K UDZS15B UDZS15B 4.7K
470/35
Rch Q107
C961
2.2/50
+
C127
Q105
C965
2SA992 R153 Q953 C331 C333
2SA992 22(1/2W) -14.5V 2SC2712
R101 C103 Q111 470/10 223J
+ C111 C113 R319:A GND_VOL1
BASS
1SS133
2SC2235-Y
D107 D105
50K 3
22/50
8
1
C963
D955
1K 4.7/50 562 222 C332 C334
R141
22/50
C115
Q101 Q115
+
C305 C307
2
120
470/10
1SS133
2SC2240BL 2SC2240BL R133 -7V 223J
333J 333J R315 R323
22/50
D956
C964
39K
R113
R115
220K
R103
C101
R105
101K
220
C123
56K
10K
220
R131 R135 R145 Rch R332 R307 NC R313
+ 22(1/2W) 10K 1.5K
470/35
2.2/50
1SS133
C335
R127
C962
560K 1.2K
D111 D109
1K 22/50
C966
C117 22/50
750
Q954 R311 R317
R143
020
8
R305
120
2SA1162 10K 3.9K 2
1SS133
+
C301
1.2K R964
R157 1 R333C311
8
47/50 R303 2 4.7K C303 R309 C309
2SA965-Y
+
470/50
C109
470K 47/50 1.2K 3 2.2K 47/50
R966
R325 4.7K 1 222J R320:A
Q113
Q103
220K
2
R327
+ 1 50K Q302:A
4
2SC1845 470 3 3
+
R962
C121
222
R301
8
Q109