Sony XVM-R70 - Troubleshooting Guide; No Picture or Sound Issues; Audio Problems (No Sound); Remote Control Unresponsiveness

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XVM-R70
6-2. BLOCK DIAGRAM — VIDEO SECTION —
46
2
48
47
7
6
53
63
62
16
1
9
8
45
AGC
AGC
VCO
Q350
Q351
12V
RV350
L-CH
VCO
VREF
VREF
L
OUT
R
OUT
VC0
BUF
BUF
PRE
EMPHASIS
PRE
EMPHASIS
6
43
11
LEVEL
DETECT
22 2
20 1
19 3
16
17
18
49
48 14
16
15
17
16
18
17
15
63 64473954
34 35
46
57
52
53
VCO I/N
VXO
IC500
RGB DECODER
IC400 (1/2)
SYSTEM CONTOL
VD IN
HSYNCLOCK
SYNC
SEP
HH
KILL
V
COUNT
OSD
SW
OUTPUT
CONTROL
VIDEO RAM
CG
ROM
OSC
BRIGHT/
CONTRAST
TRAP
SYNC
SEP
Q501,502
H PULSE
SHAPE
Q504,505
VD PULSE
SHAPE
Q500
ACC
CHECK
Q403
INVERT
RGB
OUT
G-Y
GEN
BPF/
ACC
R-Y/B-Y
DEMOD
MATRIX
26
21
19
36
28
31
32
H
CONT
V
CONT
DATA
SELECT
20
19
SW
SYNC
OUT
DELAY/
SHARP
POWER
CONTROL
Q406,407
IR
DRIVE
Q352,353
POWER
CONTROL
Q957,958
1 3 3 2
1
POWER
CONTROL
Q952,954
TRAP
CONTROL
Q503
RV351
R-CH
VCO
D903
D902
BATT+
S950
(POWER SELECT)
IC350
AUDIO IR
TRANSMITTER
IC401
CHARACTER GENERATER
D410
3.3V
HD
VD
R
G
B
POL
PAL
VCOM
HD OUT
VD OUT
R
G
B
POL
H SYNC
V SYNC
VCOM
ACC5V
ACC ON
PW ON
ACC Y/N
DATA
SCLK
CSN
L
IN
R
IN
Y IN
C IN
CSYNCIN
REM IN
REM HALT
S-DATA
S-SCL
A MUTE
SW1
SW2
IR CONT
VSYNC
CS
CLK
DATA
SCK
SDATA
P20
Q402Q401
Q400
5V
REG
IC953
3.3V
REG
IC952
BATT+
BATT+
CVBS
CN950
AMP REM
ACC DET
POWER ON
SIRCS
V-SDATA
V-SCL
A MUTE
SW1
SW2
L-CH IR
R-CH IR
BATT
12V
BATT+
R IN2 SDATA SCLK
CSYNC
G IN2 B IN2 YS
VR VG
VB
VBLK
X500
3.579545MHz
X501
4.433619MHz
POWER
CONTROL
Q951,956
REMOTE
CONTROL
RECEIVER
IC404
OSD
2
1
3
Signal path
: AUDIO
: VIDEO
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