Sony hcd-dz230 Service Manual page 60

HCD-DZ230/DZ231/HDZ235
QQ
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– IO-SCART Board (DZ230/DZ231) –
SEL (CV/MIX)
SEL (BIAS/CLAMP)
TE
L 13942296513
– POWER Board –
IC901 STR-F6138-LF1352
Reg1
Internal
Bias
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IC230 BH7868FS-E2
VCC1 1
S1 2
S2 3
C IN 4 BIAS 6dB
+
MUTE1 5 MUTE1
CV IN 6 CLAMP
6dB
7
Y IN 8 CLAMP 6dB
BIAS 9 BIAS
10
H
BIAS
PY/G IN 11
CLAMP
L
GND 12
PB/B IN 13 BIAS 6dB
MUTE2 14 MUTE2
PR/R IN 15 BIAS 6dB
VCC2 16
UVL0
+
OVP
ON=16V
–
OFF=10.5V
TSD
IOLP
+
–
Volp
OSC
Reg3
Current mirror
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2 9
8
6MHz
75Ω 32 C OUT
LPF
S-DC OUT
31 S-DC OUT
S1/S2
L
6MHz
LPF
75Ω 30 CV OUT
H
29 CV OUT SAG
28 GND
6MHz
LPF
75Ω 27 Y OUT
26 Y OUT SAG
25 GND
12MHz
6dB
LPF
75Ω
24 PY/G OUT
23 PY/G OUT SAG
22 GND
12MHz
LPF
75Ω 21 PB/B OUT
20 PB/B OUT SAG
19 GND
12MHz
Q Q
LPF
75Ω 18 PR/R OUT
3 6 7 1 3 1 5
17 PR/R OUT SAG
Reg2
Delay
Rg2
Rg3
Rg1
Delay
Latch
OCP1
+
–
Vocp
INH1
+
–
Vth1
Boottom Skip
Logic
INH2
+
–
OCP2
Vth2
Logic
FB
co
OCP2
.
Vocp(BSIN,OUT)
9 4 2 8
0 5 8 2 9 9 4 2 8
5 FB/OLP
4 Vcc
3 Drain
POWER
MOS FET
2 S/GND
m
1 OCP/INH
9 9
9 9