Sony HCD-VR50 Service Manual page 23

• BD Board
IC103 CXA2568M-T6
APC PD AMP
VEE
HOLD 1
VEE
AGCVTH
2
VREF
3
LD
PD
4
A
5
B
6
RF SUMMING AMP
VC
C 7
D
8
VEE
9 VEE
VC
F
10
E
11
VC
VC BUFFER
VC 12
VC
• MAIN Board (1/5)
IC181 MC14052BF
2X0 1 16
15
2X2 2
14
2XCOM 3
13
2X3 4
12
2X1 5
6
INH 11
VEE 7 10
VSS 8 9
IC191 BA7615N
MUTE
75
8db
LOGIC
1 2 3 4 5 6 7 8 9
24 VCC
VCC
23
LC/PD
VCC
22 LD_ON
APC LD AMP
21 HOLD_SW
AGCCONT
20
VC
VCC
(50%/30%
OFF)
RF_BOT
19
VC
VEE
RFTC
18
RF_EQ_AMP
17 RF_1
VC
RFO
16
RFE
15
ERROR AMP
VC
FOCUS
14 FE
VC
13 TE
TRACKING
VC
ERROR AMP
VCC
VC
VEE
VDD
X2
X1
XCOM
X0
X3
A
B
10
• VIDEO Board (3/3)
IC509 PCM1727E-2/T2
CLOCK MANAGER
XT1 1
DUAL PLL
PGND 2
3
VCP
NCKO 4
RSV
5
SCKO3 6
ML 7
MC 8
MODE
CONTROL
MC 9
RSTB 10
BPZ
CONTROL
VOUTR 11
AGND 12
• PANEL VR Board
IC851 M65850P
14 13 12
OSCILLATOR
1/2 VCC
CLOCK
AUTO
MAIN
RESET
RESET
CONTROL
D1
A/D
LPF1
1 2 3 4
– 99 –
384fs
•
POWER
SUPPLY
AUDIO
DATA INPUT
INTERFACE
OPEN
8 TIME OVER
SAMPLING DIGITAL
FILTER
•
FUNCTION
CONTROL
MULTI LEVEL MULTI LEVEL
MODULATOR MODULATOR
5 LEVEL 5 LEVEL
DAC DAC
CR LPF CR LPF
• •
OUTPUT OUTPUT
AMP AMP
11 10 9 8
D/A
LPF2
DO1
MO
20KBIT
SRAM
MI
DO0
5 6 7
24 XT2
23 DGND
22 VDD
21 SCKO1
20 SCKO2
19 LRCK
18 DATA
17 BCK
16 ZERO
15 CAP
14 VOUTL
13 VCA