Sony HBD-DZ940K Service Manual page 50

HBD-DZ340M/DZ640M/DZ840K/DZ840M/DZ940K
• IC Block Diagrams
IC1707 TK11150CSCL-G (MAIN Board (3/9))
IC1708 TK11133CSCL-G (MAIN Board (3/9))
5
CONTROL
CIRCUIT
BANDGAP
REFERENCE
1
IC7001 BH76071FJ-E2 (MAIN Board (7/9))
CLAMP
CVBS IN 1
VREF
VREF 2
CLAMP
PY IN 3
BIAS
PB IN 4
BIAS
PR IN 5
NUTE1 6
MUTE2 7
HBD-DZ340M/DZ640M/DZ840K/DZ840M/DZ940K
4
OVER HEAT &
OVER CURRENT
PROTECTION
2 3
75:
6.75MHz DRIVER
LOW-PASS
6dB 14 CVBS OUT
FILTER
NUTE1
13 VCC
13.5MHz
75:
LOW-PASS SD
DRIVER
FILTER
6dB 12 PY OUT
LOW-PASS
MUTE2
FILTER HD
30MHz
11 GND
13.5MHz
75:
SD
LOW-PASS
DRIVER
FILTER
6dB 10 PB OUT
LOW-PASS
MUTE2
FILTER HD
30MHz
13.5MHz
75:
LOW-PASS SD
DRIVER
FILTER
6dB 9 PR OUT
LOW-PASS
MUTE2
FILTER HD
30MHz
8 LPF SEL
IC1501 BD8203EFV-E2 (MAIN Board (4/9))
SGND 1
SGND
OPVCC
REG5 2
PREVCC 3
PREVCC
PVCC1 4
PGND 5
PGND
VO1+ 6
LEVEL
SHIFT
VO1– 7
VO2+ 8
LEVEL
SHIFT
VO2– 9
VO3+ 10
LEVEL
SHIFT
VO3– 11
VO4+ 12
LEVEL
SHIFT
VO4– 13
VO5+ 14
VO5– 15
PGND 16
PGND
PVCC2 17
VCTL 18
FWD 19
LOADING
CONTROL
RVS 20
IC7003 NJM2561F1-A (TE2) (MAIN Board (7/9))
6.75MHz
LOW-PASS
Vin 4
FILTER
GND 5
CLAMP
V+ 6
50 50
SGND
SGND
SGND
STBY
TSD
MUTE4
MUTE123
SGND
SGND
OPVCC
PREVCC
(VC)
3 Vsag
75:
DRIVER
6dB 2 Vout
1 P/S
40 SGND
39 REGVAR
REGVARVCC
38
37 REGCTL
36 REGRST
35 TSDM
34 MUTE4
33 MUTE123
32 SGND
31 SGND
30 OPOUT
OPIN–
29
28 OPIN+
27 VSPDL
26 VCI
25 VCO
24 IN1
23 IN2
22 IN3
21 IN4