Hitachi VTMX900ECT Wartungshandbuch Seite 113

Video Signal Processing (VS)
1 2 3
AH2
AHC
AH1
A
for 4/2 Head only
1911
F1111
for mono only
11
F1110
B
1912
10
F1109
9 9 F1108
8 8
F1107
7 7
F1106
to Rotating 6 6 F1105
5 5
Trafo F1104
4 4
F1103
C
3 3 F1102
2 2
F1101
1 1
D
E
TRIV
F
F017
ENVC
G
H
C002
.. OSCILLOGRAMS
..V MEASURED IN PLAYBACK MODE C001
I
..V MEASURED IN RECORD MODE
GNDVS
GNDVIO
1 2 3
4 5 6
87
3001
1K5
GNDVS
F083
5V
I045
4.9V 3.2V
for SECAM only
3.9V
2007
5VA
GNDVS
GNDVS
1.8V 3.4V
0.8V 0.8V 0.8V
0V 3.9V 2.5V 3.2V
84 83 82
0.8V 81 74 73 72
85
REC_H
2020
86
10u
5.1V
5V
2021
REC_H
87
RF_SW
100n HPLL
1.9V
BPF
4.2V
88
1.9V
NAP
4.1V HA_SW
89
KIL
1.9V
4.1V B.D.
90
2V
4.2V
ENV
91
DET
0.3V
REC_FM
1.7V
I054
2027
92 AGC2
REC_FM
AGC_DET
1u
+
3.1V
GNDVS F016
93
COMP_OUT
0.3V
0.5V
94
SVHS:OPEN
FM REC REC FM W.D.
AGC FM EQ
FM_AGC1 MOD CLIP
P R
GNDVS
REC:EE-AGC_TC1
PB-EQ
PB:M.C.BALANCER
70 MTA/CROT RF_HA_SW Y_VCC
10 11 12 13 14 15 16
7004-B 0.7V
1.8V 1.5V
0.8V 2.6V 2.3
LA71595M 5V 1.4V 1.4V
5VA
71 47
GNDVS GNDVS GNDVS
2042
GNDVS GNDVS 5V
100n
GNDVS
4.1V
1.7V
I048
3021
1.7V
150R
1V
7003
BFS20
73
GNDVS
GNDVS
GNDVS
4 5 6
3-31 3-31
7 8 9 10
5.1V
I001
7005 GNDVS GNDVS
BC847BW
2.7V
2.1V
GNDVS
89
2.1V 9.4V
48 47
7004-C
GNDVS
LA71595M
for Secam only
49 50
2004
0.8V
88
10n
GNDVS
10n
GNDVS
GNDVS GNDVS GNDVS
1001
HC-49/U
4M433619
0V 0.4V
1V 4V
0.8V 0.25V 3.4V
2.5V 2V 0.9V 3.9V 2.7V 2.1V 3.4V
64 63 62 61
71 70 69 68 67 66 65
C-GND
VXO2 S.L.D.
320/321
MES_DET
FH_VCO
R
D.E.
PB_BGA
LPF
AFTER
COMB
PILOT PHASE D.E.
KIL_DET AMP
P
BG ALT P
R
BPF1
COR
NON_COR
REC PB REC
MESECAM
D.E. APC APC AFC
KIL
PB_BGA
ID_DET
BEFORE
HPLL
P
P
P
R P COMP_IN
REC R
C_LPF
BGA
R
NON_LIN
Y.N.R.
MAIN DE_EMP
P
CONV + B-UP
P
AMP SYNC
ACC
Y_LPF SEP
R
R
ACC
BPF2 BALANCER
DET
SUB_LPF
PLL
P R SYNC_DET
DETAIL
ENHANCER
FM-DEM
V/I
NON_LIN 1/2 F.B.C.
CONVERT
EMP
DOUBLE
P
LIMITER R
BLUE CHARA
BACK INSERT
P IIC 6DB_AMP
R
CLAMP
CLAMP
Y-GND
23 24 25 26 27
17 18 19 20 21 22
2.4V
1.8V 2.4V 3V 2.5V 0V 0.3V
5V 0.2V
1.7V
3V 2.4V
3016
2K7
GNDVS
75 76
2047
I040
74
4p7
5V
2.5V
2.4V
47K
I050
1.8V
7008
GNDVS
3023
BC847BW
1.7V
2.3V
7010
BC847BW
GNDVS
I051
I052
GNDVS GNDVS GNDVS GNDVS GNDVS
7 8 9 10
Interconnections:
AF page 3-27 AL page 3-24
FV page 3-21 FOME page 3-34 I/O page 3-33
11 12 13
83 82
2055
2003 27p
I341
10u
1.5V
46 45 5V 2.3V
Y_DELAY
C_COMB
CCD_GND
51 52 53 54 55
F006
5.1V
1.8V 2.5V 2.5V
GNDVS
85 86 5VA
84
GNDVS GNDVS
F005
5.1V
3.4V 3.3V 5V 3.4V 0.5V
60 59 58 57 56
4.3V
C_VCC NTSC_H/
4.1V
2FSC GNDVS GNDVS
44
PB H Out
2.2V
TO:
2V
MES_DET
43 7006
1.6V
BC857BW
3.1V
GNDVS 2022
42
CLAMP VCA
GNDVS
I340 10u
2.9V
2023 GNDVPO
41
Y
D
1u
R
5V
2024
I339
40
VCC
SEPP_IN IIC_SW
47u
4.1V
2025
39
REG
N.C.1 N.C.2 10n
1.8V
81
2.1V
2026
38 3028
VID1/SEPC_IN
PIC_CTL
ANR
150R
100n
4.8V
37 2028
SYNC_DET
6
Y/C_MIX
100n
2.3V
VID2/SEPY_IN 2V
2029 F002
36
P
100n
3.4V
3.3V
I062 I049 2031
35 3007
AFC
R
3K9
470n
2.3V
1.9V
I061
2033 2034
VID3_IN 34
EE_AGC
10n 1n
1.5V
1.35V 2035
I338
AGC_TC2 33
22u
EQ_CTL
28 29 30
31 32
0.3V 1.7V 5V 2.9V 2.1V
1.8V 1.2V
1.5V
79
2036
77 78
10u
5.2V
5V
1.2V
F008
4.8V
5.2V
1.2V
7009
PDTA124EU
GNDVS GNDVS
11 12 13
AIO1 page 3-17 AIO2 page 3-15 DE page 3-19 FM ST page 3-22 FM NIC-page 3-23
PS page 3-14 VPO page 3-32 VS page 3-31
0050 D1 F009 G1
0051 E1 F010 G1
1001 C8 F011 G1
1911 B2 F012 G8
1912 B1 F013 G7
2000 A8 F014 G5
2001 A10 F015 G5
2002 A10 F016 F4
2003 A11 F017 G2
2004 B9 F019 I9
2005 C13 F083 A6
2006 C13 F1101 C2
2007 C7 F1102 C2
A
2008 C9 F1103 C2
2009 C9 F1104 C2
2010 C9 F1105 C2
2011 C10 F1106 C2
2012 C10 F1107 B2
2013 C11 F1108 B2
2014 C7 F1109 B2
2015 C8 F1110 B2
2016 C10 F1111 B2
5VA
2017 C10 I001 A7
2018 C12 I014 C9
2019 C13 I015 C9
B
2020 D4 I040 H7
2021 D4 I041 I9
2022 D12 I044 B6
2023 D12 I045 B5
2024 E12 I046 I5
2025 E12 I047 H6
2026 E13 I048 I6
2027 F4 I049 F13
2028 F12 I050 H8
2029 F13 I051 I8
2030 F4 I052 I7
C 2031 F13 I053 H8
2032 H6 I054 F4
2033 F12 I055 I7
2034 F13 I056 I6
2035 G12 I057 C8
2036 H11 I058 D13
2037 G6 I059 C10
2038 G6 I060 C10
2039 G6 I061 F12
PBH
2040 G7 I062 F12
2041 H8 I063 H4
2042 H7
I300 C4
D
2043 H4 I331 C4
2044 H5 I332 D4
2045 H10 I333 D4
2046 I6 I334 I7
2047 H7
I335 H7
2048 I8 I336 G8
2049 I11 I337 G11
2050 I9 I338 G12
2051 I8 I339 E12
2052 I9 I340 D12
2053 D13 I341 A11
2054 H7 I342 C8
E
2055 A12
2056 D12
3001 A6
3002 C8
3003 A8
VBS
3004 C9
3005 C13
3006 C9
3007 F13
3008 I11
3009 C6
VFV
F 3010 H5
3011 H9
3012 H9
3013 I5
3014 A6
3015 H6
3016 G7
3017 H9
3018 I8
3019 I8
3020 I8
3021 I7
G
3022 I7
3023 I7
3024 I7
3025 G11
3026 E12
3027 D4
3028 E12
4001 I8
VREC
5000 B13
5001 C13
5002 C4
5003 H4
H
5004 I6
5005 I8
5006 I6
7002 B6
7003 I6
7004-B G5
IREV
7004-C B10
7005 A8
7006 D13
7008 H8
7009 I11
7010 I7
C001 I3
I
C002 I3
F001 G8
F002 F13
F003 B12
F004 B12
F005 C11
F006 B13
F007 D12
F008 H12
VS_S page 3-28