Service manual

ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
RECORD COLOR SIGNAL
RECORD LUMINANCE SIGNAL
PLAYBACK COLOR SIGNAL
PLAYBACK LUMINANCE SIGNAL
AUDIO SIGNAL(PB)
AUDIO SIGNAL(REC)
L4005
47uH 0305
L4001
100uH 0305
L4002
100uH 0305
L4003
100uH
L4008
100uH 0305
X4001
3.579545MHz
Q4009
2SA1015Y
BUFFER
Q4005
2SA1318
BIAS CTL
L4007
100uH
W812
W821
TP4001
Q4007
2SC1815Y
BUFER
Q4002
2SC3331
AUDIO
PB SW
Q4001
2SC3331
AUDIO
PB SW
Q4004
2SC1815Y
BUFFER
Q4006
2SD734
BIAS OSC
Q4008
2SC1815Y
BUFFER
C4059
4.725V KA
C4037
150V KA
C4066
150V KA
C4033
150V KA
C4021
336.3V KA
C4023 226.3V KA
C4065 150V KA
C4057 226.3V KA
C4035
1006.3V KA
C4022
1016V KA
C4060
150V KA
C4026
226.3V KA
C4061 150V KA
C4070
476.3V KA
C4045
476.3V KA
C4039
150V KA
C4062
150V KA
C4030
1016V KA
C4031 150V KA
R4046
1.5K
R4078_1
100 1/4W
R4001
560
R4043 3.3K
R4047
18K
R4044
8.2K
R4019
4.7K
R4028
6.8K
R4029 2.2M
R4055 100K
R4045
1.8K
R4067
47K
R4069
47K
R4010
3.3K
R4015
2.2
R4048
4.7K
R4049
1.5K
R4025
330K
R4012
18K
R4072
18K
R4008
12K
R4004
2.7K
R4021
47K
R4013
10K
R4023
8.2K
R4033
1K 1/4W
R4003
10K
R4002
10K
R4026
47K
R4031
47K
R4009 2.2K
R4063 3.3M
R4062
220K 1/4W
R4060
220K
R4059
1K
R4027
180 1/4W
R4051
33K
R4024
100K
R4065
2.2K
R4053
1.8K
R4032 27K
R4020
10K
R4068
47K
R4034
820
R4022
6.8K
R4011
22K
R4057
1.8K
R4070
1K
R4050 680K
C4003
0.1 F
C4054 0.01 B
C4018
0.0012 B
C4055
0.022 F
C4032 0.022 B
C4006
0.015 B
C4005
0.01 B
C4047
18P CH
C4049
200P CH
C4038
0.1
F
C4041
390P CH
C4020
0.01 B
C4044
0.1 F
C4002 0.022100V TF
C4028
0.1 B
C4029 0.047 F
C4036
0.022 B
C4053 0.01 B
C4052
0.1 F
C4009 0.1 F
C4027 820P CH
C4025
0.0022 B
C4074
470P CH
C4068
0.001 B
C4056
0.1 F
C4048 0.01 B
C4050
0.01 F
T4001
1626007
COIL,BIAS OSC
1
2
34
5
6
C4011
150V
KA
C4034
150V KA
C4001
476.3V
KA
C4043
150V KA
C4058
226.3V KA
C4016
4.725V KA
C4004
476.3V KA
C4024
4.725V KA
C4017
150V KA
C4010
476.3V KA
C4071
1006.3V KA
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
DURING PLAYBACK
MEASURED WITH THE DIGITAL TESTER
NOTE:
THE DC VOLTAGE AT EACH PART WAS
CP4003
TMC-T02X-E1
1
2
IC4001
LA71077BM-MPB
Y/C/AUDIO/CCD/HEAD AMP IC
110
100
11 12 13 14 15 16 17 18 192 20 21 22 23 24 25 26 27 28 293 30
31 32 33 34 35 36 37 38 39
4
40 41 42 43 44 45 46 47 48 49
5
50
515253545556575859
6
60616263646566676869
7
70717273747576777879
8
80
818283848586878889
9
90919293949596979899
TUNER VIDEO SIGNAL
CP4002
IMSA-9604S-06Z13
1
2
3
4
5
6
CP4001
TOC-C09X-A1
1
2
3
4
5
6
7
8
9
Q4003
DTA124EKA
SW
CAUTION: DIGITAL TRANSISTOR
TUNER_A
P.CON+5V
SP/LP/EP-H
INPUT_SEL
FRONT_A_IN-L
P.CON+5V
GND
FSC
FRONT_V_IN
4FSC
FRONT_A_IN-L
TUNER_V
TUNER_A
FROM_NORMAL_A
4FSC
DUMMY_V.SYNC
C.SYNC
SP/LP/EP-H
TRICK_PB-H/EE-H
P.CON+5V
V.REC_ST-H
C.ROTARY
AUDIO_MUTE-H
TUNER_V
REC/EE/PB
OSD_V
FRONT_V_IN
CTL-
CTL+
DOC_XO_CTL
ENV.DET
INPUT_SEL
H.AMP_SW
OSD_V
COMP
COMP
ENV.DET
H.SW
FROM_NORMAL_A C.SYNC
DUMMY_V.SYNC
P.CON+5V
V.REC_ST-H
CTL+
CTL-
TRICK_PB-H/EE-H
AUDIO_MUTE-H
V.REC_ST-H
H.SW
C.ROTARY H.AMP_SW
REC/EE/PB
DOC_XO_CTL
P.CON+5V
Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM
(SYSCON PCB)
2.4
TO FULL ERASE HEAD
FROM/TO SYSCON/SERVO
G-2G-1
PCB010
VMX181
NC NC
NC
NC
NC
NC
NC
0
NC
EQ
AMP
PB/EE
REC
PB:EP
EP/LP
REC:
AMP
Vref
PB
/EE
ALC
Vref
2.3V
A-Vcc
P
A.GND MUTE
AUTO
BIAS
LINE
AMP
H.A GND
H.A VCC
ENV DET
COMP OUT
REC AGC
FILT
Y/C
R/P
AUDIO
R/P
R/P
AUDIO
MUTE
RF SW C ROT HA SW
R
CTL
AMP
IN IN
AGC
AMP
+
PB
FM-EQ
DELAY
AGC
FM
WC
DC
FM-EQ
REC
FM
MOD
Sub
CONV
BALANCER
4.21M
BPF
Main
CONV
AMP
GCA
B.D.
KIL
KIL
KIL
DET
REG
C-GND
B-UP
AMP
ACC
DET
BGA
C-LPF
VX01 320FH
VCO
SLD
ALWAYS
5V
C-VCC VDD
CLAMP
VCA
CLAMP
VCP
CLAMP
V-AGC
AGC
TC2
FBC
1/2
SYNC
SEP
6DB
Chara
INS.
YNR/COMB
Y-LPF
DOUBLE
LIM
NL
EMPHA
DETAIL
ENH
LPF
SUB
FM
DEM
V/I
CONV
3.58M
BPF2
3.58M
BPF1
REC
APC
PB
APC
REC
AFC
S-EQ
FM-EQ
DRIVER
CCD
OUT
PULL
CLOCK
PB
PHASE-EQ
R-EQ
TEST
BGA
BGA
C.SYNC
OUT
IN
4Fsc
Y-GNDY-Vcc
H.A GND
H
L
H
L
CH4
CH2
CH1
H
L
H.AMP
H.AMP
SW
SW
SQPB
VHS
NOMAL
R
P
R
TEST
PR
PR
R
P
HA TEST
NOMAL
PR
KIL
P
R
P
R
BEFORE
AFTER
RP
P
R
231
PB-C
Y/C
MIX
N.L.
DEEN
NC1
P
R
PB-Y
ALC-LEVEL
REC EP
OUT
REC SP
OUT
CH3
H.A
PB
AMP
ACC
TIMMING
P
R
VSSVSS
AUTO-BIAS
SYNC
DET
AFC
VIDEO OUT
2.4 2.4 2.4 2.4 0 2.4 2.4 1.5 5.0 5.0 0 0 0.8 0.8 0.8 0 0 4.9 0 1.6 5.0 1.0 0.2 2.0 3.4 2.8 0 2.1 1.0 4.8
4.6
0
4.4
4.3
3.0
1.0
1.5
2.5
3.5
2.8
4.9
2.8
2.8
3.2
3.0
2.5
2.7
0
0
0.12.35.05.05.03.44.93.44.13.02.22.34.0
1.4
002.01.52.32.82.32.35.02.402.42.42.4
0
1.8
1.8
1.8
1.8
0
5.1
1.8
1.8
1.8
1.8
0
1.0
0
2.8
0.3
0
5.1
2.4
2.5
1.9
2.6
0
0
0
0
0
0.7
0.7
0
0
5.1
0
0
NC
5
4
3
SP-CH1 (R)
SP-CH2 (L)
EP/LP-CH1 (R)
EP/LP-CH2 (L)
AE HEAD(-)
AUDIO REC
CTL+
CTL-
AE HEAD(+)
AUDIO PB
FE HEAD(HOT)
FE HEAD(GND)
3.0
5.2
1
NC
NCNCNC
5.2
3.7
3.0
5.2
5.2
0
5.2
0
5.3
3.7
1.9
0
FROM POWER
FROM/TO CYL
SP_COM
EP/LP_COM
FROM/TO HEAD AUDIO CONTROL
FROM/TO TUNER
2