Service manual
79
VSX-918V-K
5
6 7 8
5
6 7 8
A
B
C
D
E
F
11 10
11 10
43 12
897645231
134562
78 4659231
D751
R1105
D752
RY752(3/3)
RY751(3/3)
RY501(3/3)
RY753(3/3)
D754
R1104
D753
D758
R1103
D757
D742
D741
D744
D743
C740
R740
D746
D745
D747
L754
R772
R789
L501
R755
L753
RY501(2/3)
R741
R742
R743
R744
R756
C755
R790
R771
C517
C771
RY753(1/3)
RY501(1/3)
W240
C756
C763
W244
C764
W247
C761
C762
W238
C785
C772
W236
C753
W248
C754
W272
C751
C752
L761
R761
R762
L762
L751
R751
R752
L752
C709
R716
R1110
R763
R764
R753
R754
RY752(2/3)
RY751(1/3)
RY751(2/3)
RY752(1/3)
R711
Q705(2/2)
R714
R715
Q707(1/2)
Q705(1/2)
D703
IC608
IC609
IC606
C704
IC607
IC604
IC605
C703
R710
Q707(2/2)
W201
R712
C712
D712
C711
D711
C702
D702
C708
H702
H701
C701
C707
CN1201
R745
R746
R747
C765 C766
C759
C521
C773
C757 C758
CN702
CN701
851
R1250
C1250
C1251 R1251
C872
IC853
IC851
IC852
IC702
R707
C706
Q702
R732
R702
R704
R706
R705
R708
C705
D713
Q704
R703
Q703
R722
R721
R713
IC701
R731
R701
Q721
Q701
R709
D701
Q724
J6
R724
J4
J5
J3
J3 to J7
J7
Q722
R723
R1255
R1256
: AUDIO SIGNAL ROUTE
( ) DC OUTPUT DETECTOR
Q696,697:
Q605,606,633,655,656,683,
Q505: OVERLOAD DETECTOR
XPROTECT
+12V
GNDU
SP-A_RY
*4
SP-B_RY
R/C_RY
*4
*4
*4
*4
*4
Indicated in 1SS133-T
3.DIODES
BA:CQMBA(Film Cap)
Unit: p-pF or μF unless otherwise noted.
Rated Voltage:50V except for electrolytic capacitors.
Ratings:Capacity(μF)/Voltage(V) unless otherwise noted.
M:CQMA(Film Cap)
2.CAPACITORS
Tolerance:(J)± 5% unless otherwise noted.
Rated power:1/4W unless otherwise noted.
1.RESISTORS
Unit:k-kΩ,M-MΩ or Ω unless otherwise noted.
NOTE
WHITE
J603
J602
WHITE
WHITE
DB911NDO
DB211NDO
J601
DB910NDO
DB910NDO
DB410NDO
YELLOWJ605
REDJ604
STBY
(SBR)
STBY
*4
*4
*4
*4
*4
*4
*4
WHITE
J607
DB118ND0
DB621ND0
BROWN
J606 BLUE
(SR)
(FR)
J701 DB813ND0
J702 DB813ND0
ST+5V
-29.7V
GNDU
D
*2
*2
AEK7022-A
AEK7022-A
AEK7022-A
ICP-N10
AEK7022-A
AEK7022-A
AEK7022-A
*1
STBY
C
B
6.8B
MTZJ
-22.9V
J21
D20PYY1130E
GNDU
ST+5V
STBY
STBY
STBY
AC WUP
ST+5V
A
STBY
J52
AC RY
GNDU
D20PYY0410E
ASSY
STBY
*5 *5
+
-
+
-
CN753
SP B L
SP B R
*5
+
-
C
*5
*5
-
CN752
+
SL
+
-
SR
*5 *5
-
FL
CN751
-
+
+
FR
REG B
REG G
AC WUP
AC RY
FL AC2
FL AC1
REG B
DREG
DREG
-VF
HP.SW
A.MUTE
AC WUP
AC RY
FL AC2
FL AC1
REG B
REG G
52147-0610
DREG
REG B
52147-1110
DREG
GNDU
HP L
HP G
HP R
A.MUTE
HP.SW
51048-1100
J47
XDX3065
STANDBY
TRANS2 ASSY
TO HEADPHONE ASSY
*2
*1
*1
*1
*1
*1
*1
*1
*1
ICP-N10
518/J
*1
STBY
TO
DB932ND0
PRIMARY
TO TRANS3 ASSY
STBY
DB232ND0
DB932ND0
DB230ND0
DB030ND0
STANDBY
W382
+
-
~
~
+
-
~
~
F-DRIVE
SBLO
SBRO/SBO/SWO
CO
SLO
SRO
FLO
FRO
602_5
P6
602_2
600/3_5
600/3_2
601_5
601_2
P12
XPROTECT
P1
NECK
6OHM
1SS355
1SS355
1SS355
ASR7001
ASR7001
ASR7001
ASR7001
1SS355
1SS355
1SS355
100/25
68K
1SS355
1SS355
1SS355
1SS355
STBY
STBY
PUF 100 1/4W
STBY
PUF 100 1/4W
ATH1004
ASR7001-
4.7K
4.7K
4.7K
ASR7001-
1W
4.7
*4
STBY
STBY
*4
*4
ASR7001-
*4
*4
*4
*4
PUF 100 1/4W
ATH1004
PUF 100 1/4W
PUF 100 1/4W
ATH1004
ATH1004
PUF 100 1/4w
ATH1004
1/50
10k
0
1W
4.7
1W
4.7
1W
4.7
4.7
1W
ASR7001-
ASR7001-
ASR7001-
ASR7001-
STBY
RN4903
1k
10k
1SS355
RN4903
RN4903
D+5V
D+5V
XCH3012--F
3300u/42
(10A)
(10A)
(10A)
XCH3012--F
3300u/42
2SA2005(E)
(10A)
(10A)
(10A)
RN4903
D5SBA20(B)
100/10
100/35
MTZJ22D
5600/71
XCH3027
XCH3027
5600/71
RT1N241M
52147-0410
4.7K
4.7K
4.7K
4.7K
CHASSIS
NP
1/4W
NP
STBY
STBY
22
GNDU
10/100
47k
47k
1SS133
1k
2SC2240
2SA1145
10/100
22
2SA1145
2SC5511(E)
D5SBA20(B)
47k
2SC2240
47k
STBY
3.3
C 1/2
D
TRANS2 ASSY
(XWZ4335)
D
(FL)
: Audio Signal Route (Front L ch)
(SL)
: Audio Signal Route (Surround L ch)
(C)
: Audio Signal Route (Center ch)
55
Q
G
1551
O
C 2/2
C 2/2
CAUTION : FOR CONTINUED PROTECTION AGAINST
RISK OF FIRE. REPLACE ONLY WITH
SAME TYPE NO. ICP-N10, MFD BY ROHM
CO., LTD. FOR IC701 and IC702.
CAUTION : FOR CONTINUED PROTECTION
AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME
TYPE NO. AEK7021 MFD, BY
LITTELFUSE INK. FOR IC853.
(FL)
(FL)
(FL)
(FL)
(FL)
(FL)
(SL)
(SL)
(SL)
(SL)
(C)
(C)
(C)
(C)
IC853
AEK7021 (7A)
CAUTION :
FOR CONTINUED PROTECTION
AGAINST RISK OF FIRE.
REPLACE ONLY WITH SAME
TYPE NO. AEK7009 FOR IC610
MFD, BY LITTELFUSE INC.
/MYSXJ5
*1
3.9K
R703
R704
R701
R702
4.7K 180K
R707
R708
10K
R709
R710 R722
R721
XKE3044
XKE3043
XKE3050
*5
763,764
D751,753,757
R1103,R1104,R1105
C753,754,756,
761,762
C751,752,755,
*4
/MYSXJ5
2.2k
CQMBA123J50
0.22
1SS355
BA
0.22 BA
SITUATION
A-D
A.B
NO SIGNAL
MYSXJ5
POINT VOLTAGE
(V)
61.4±