Service manual

68
VSX-918V-K
1
2 3 4
A
B
C
D
E
F
1
2 3 4
10.3 MAIN ASSY (3/3)
SPB_RY
SPA_RY
HPDET
R/C_RY
AC_RY
AC_WP
EXPDT EXPST EXPCLK
EXP1
EXP4
EXP3
EXP2
SRRX
SRTX
SRIN
RMC
SROUT
SW2
SW1
INH
OSD_ON
AMUTE
SWDET
V3
V2
V1
OSD_DT
OSD_CS
OSD_CLK
OSD_RST
EXP5
V2
V3 EXPCE
V1
EXP4
USBDAO
USBDAI
SRRX
TX
SRTX
RX
T_CLK
T_DO
T_CE
T_DI
EXP3
100
EXP2 EXP1
47
EXP4
CN111
L9002
L5002
L9001
C9030
L102
L101
R9096
R9095
R9094
CN129
CN130
C9017
IC9004
R9098
D101
C116 C115
R9097
Q6001
R6006
R6009
R6001
C6001
C9001
R6007
R6003
IC6001
R6002
R6010
R6004
D6001
D6002
IC9002
R5004
R5003
C5028
C5027
C5026
C5025
R5002
R5001
CN103
C5001
C5002
C5003
C5005
C5004
CN104
21
12
18
17 15
16
19
20
13
14
11
10
9
8
7
6
5
4
3 1
2
19
18 16
17
13
11
12
10
14
15 13
12
11
10
8
9
7
5
6
3
4
9
8 6
57
4
3
11
9
10
2
1
2
1
8 9
6
7
4
5
2
3
11
10
13
12
14
15
116
6
7 8
9
5
4
10
11
2
3
1
13
12
14
3
2
1
4
8
7
6
5
4
3
2
1
53
4
1
2
7
6
XKP3091
GNDT
ATL7002
QTL1013
ATL7002
100/25
GNDA
GAV
QTL1013
SWPR
QTL1013
GNDU
9604S-19C
9604S-13C
TC4094BFN
GNDU
0.1
D+5V
VT+9
D+5V
*2
*2
STBY
0.01 0.01
YB YB
V-12
V+12
STBY+5V
RT1N241M
D+5V
10K
GNDU
100
100k
0.1/16
GNDU
STBY
100
TC74VHCT125AFTS1
STBY
100
100
1.8k
1SS355
YB
STBY
D+5V
BR24L16FV-W
TR
TL
STBY
VT+9
52044-1145
22p
1000p
1u
0.01
1000p
1000p
1000p
CHASSIS
STBY
STBY
YB
YB
YB
GNDT
GNDU
9604S-07C
RDS_DT RDS_CLK
RDS_ON_/_OFF
R5012
R5013
R5020
C5020
R5011
C5012
C5017
C5018
C5010
C5011
IC5001
C5013
X5001
C5014
C5015
C5016
R5010
2 1 3 4 5 8 6 7
15 16 12 14 13 9 11 10
STBY
STBY
1K
4700p
10/50
STBY
560p
STBY
1K
STBY
47K
AL
LC72725KM
47K
27p
27p
47/16
CH
CH
AL
ASS7004
0.01
D+5V
YB
RDS-ID/READY
MPXIN VREF
RDDA FLOUT VSSA VDDA
CIN
RDCL
XIN
XOUT
RST
MODE VSSD VDDD
TEST
RDS
4.332MHz
R5007
R5005
R5016
C5008
R5009
Q5009
R5006
STBY
STBY
GNDT
STBY
STBY
STBY
STBY
2.CAPACITORS
Rated Voltage: 50V expect for electrolytic capacitors.
Ratings: Capacity(μF)/Voltage(V) unless otherwise noted.
Unit: p-pF or μF unless otherwise noted.
Tolerance: (J) 5% unless otherwise noted.
Rated power: 1/16W unless otherwise noted.
-
+
: AUDIO SIGNAL FLOW
Unit: k-kΩ, M-MΩ or Ω unless otherwise noted.
1.RESISTORS
NOTE
R9097
*2
VSX-918V
X
R9098
0
0
X
SP-B RY
ST+5V
AC RY
TO POWER PACK ASSY
R/C RY
SP-A RY
HP. SW
GNDT
GNDU
D+5V
T+9V
AC WP
-VF
FL AC2 FL AC1
-12V
+12V
SWOUT
GAV GAV
GNDA GNDA
STBY
EXCEPT
VSX-918V
VSX-918V ONLY
NC
TO VIDEO ASSY
TO FM/AM TUNER UNIT
OSD_ON
SW1
SW2
INH
OSD_ON
SW1
SW2
INH
SWDET
AMUTE
SWDET
AMUTE
V3
V2
V3
V2
OSD DT
V1
OSD CLK
V1
OSD DT
RDS
VSM
OSD CLK
OSD RST
OSD CS
GNDT
OSD RT
OSD CS
MAIN ASSY(3/3)
QS
EXPANDER
VSS
Q4
Q3
Q'S
Q8
Q2
Q1
Q7
Q6
CLK
SERIAL IN
Q5
OE
STROBE VDD
GND
2Y
RX
3A
3Y
2A
2OE
TX
4Y
3OE
1A
1Y
RX
TX
4OE
4A
1OE
VCC
918 ONLY
A1
A0
GND
A2
SDA
SCL
Vcc
WP
E2PROM
TUNER CLK
+9V
TR
GNDT
TL
TUNER DO
TUNER CE
TUNER DI
(RCA Jack)
FROM PRE-AMP
(MAIN ASSY 2/3)
HPD_IN
CE
SELA DDC SW
NC
SELB HPD_S
MODULE
TO HDMI SWITCHER
A 3/3
CN816
C 2/2
P
CN304
CN303
P
A 1/3
A 1/3
A 2/3
(L)
(SW)
CN1001
W
VSX-818V
VSX-818V