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
Q4501
KTC3875S_Y_RTK
AUDIO PB SW
Q4502
KTC3875S_Y_RTK
AUDIO PB SW
Q4506
2SC2412K
AMP
Q4507
2SC2412K
BUFFER
Q4504
KTC3203_Y
BIAS OSC
Q4509
2SA1037AK
BUFFER
Q4505
KTA1266
BIAS CTL
Q4511
2SA1037AK
BUFFER
X4501
100CT3R502
3.579545MHz
C4511
2206.3V YK
C4523_1
2216V KA
C4532_1
3310V KA
C4544_1
4.750V KA
C4571
2206.3V KA
C4508
476.3V KA
C4529
4706.3V YK
C4540
3.350V KA
C4518
2206.3V KA
C4568
0.3350V KA
C4548
0.3350V KA
C4503
22P CH
C4501
0.001 B
C4534_1
0.0047 B
C4533
0.01 B
C4557
150P CH
C4573
0.1 B
C4546
0.022 B
C4522_1
0.047 B
C4514_1
0.047 B
C4569
0.1 B
C4538
0.1 B
C4535
0.1 B
C4521
0.068 B
C4541
0.0022 B
C4559
0.1 B
C4561
0.01 B
C4555
0.1 B
C4542
820P CH
C4513
0.015 B
C4512
0.01 B
C4524
0.1 B
C4517
0.1 B
C4537
0.01 B
C4551
390P CH
C4552
0.1 B
C4553
39P CH
C4549
0.022 B
C4536
0.1 B
C4506_1
0.022100V MMTS
C4556
0.01 B
C4580
0.1 B
C4579
0.1 B
C4505
0.33 B
R4507
1M
R4527
330K
R4531
180
R4546
2.7K
R4550
2.2M
R4562
180 1/4W
R4557
82K 1/4W
R4534
8.2K
R4523
22K
R4530
12K
R4506 3.3K
R4532
22K
R4533
820
R4528
22K 1/4W
R4524
47K
R4544
680K
R4501
560
R4503
10K
R4502
10K
R4508
3.3K
R4540
100
R4536
8.2K
R4541
1.8K
R4537
1.8K
1/4W
R4505
8.2K
R4513
1.2K
+-1%
R4545
1K
R4510
2.2
R4539
1.5K
R4526
6.8K
R4529
10K
R4520
1K
R4511
22K
R4519
4.7K
R4521
10M
R4522
220K 1/4W
R4509
680
R4504
12K
R4563
180 1/4W
R4525
12K
R4560
100K
R4559
2.2K 1/4W
R4553
100
R4512
10 1/4W
C4527
476.3V KA
C4539_1
1025V KA
C4581
10016V KA
C4572
150V KA
C4564_1
3310V KA
C4565_1
1025V KA
C4550
150V KA
C4545
476.3V KA
C4543
150V KA
C4558
476.3V KA
C4574
150V KA
C4576
150V KA
C4566
150V KA
C4547
150V KA
C4570
4.750V KA
C4567
0.2250V KA
W877
W804
W874
W870
W846
W891
TP4501
V.ENV
W854
W856
W880
W864
L4509_1
100uH 9A06B
L4506
47uH
0305
L4505
47uH
0305
L4504
100uH 0305
CP4503
B2013H02-2P
1
2
CP4501
TOC-C09X-A1
1
2
3
4
5
6
7
8
9
L4502
1626009
COIL,BIAS OSC
1
2
34
5
6
CP4502
IMSA-9604S-06Z14
1
2
3
4
5
6
Q4503
DTA124EKA
SW
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
IC4501
LA71205M-MPB
Y/C/AUDIO/HEAD AMP IC
1 10111213141516
17 18 192 20
21 22 23 24 25 26 27 28 29
3
30 31 32 33 34 35 36 37 38 39
4
40
414243444546474849
5
50515253545556575859
6
60
616263646566676869
7
70717273747576777879
8
80
9
CAUTION: DIGITAL TRANSISTOR
DURING PLAYBACK.
MEASURED WITH THE DIGITAL TESTER
NOTE:THE DC VOLTAGE EACH PART WAS
S808X S808Y
FSC
COMP H.SW
Y/C_CS
ENV_DET
C_ROTARY
Y/C_CLK
P.CON+5V_A
H.AMP_SW1
Y/C_DATA
P.CON+5V_A
VCR_A_MUTE
P.CON+8V
P.CON+5V_A
NORMAL_A
Y/C_AUDIO
FSC
HF2 Y/C_CLK
HF_COM Y/C_DATA
HF1 Y/C_CS
H.SW
VIDEO_OUT
ENV_DET
VCR_A_MUTE
CTL+
CTL-
C_ROTARY
DUMMY_V.SYNC
V.REC_ST_H
H.AMP_SW1
COMP
Y/C_VIDEO
P.CON+5V_A
TUNER_VIDEO
V.SYNC
AUX_V[F/R]
DVD_VIDEO
Y/C_VIDEO
AUX_V[F/R]
DUMMY_V.SYNC
TUNER_VIDEO
P.CON+5V_A
P.CON+8V_B
Y/C_VIDEO
VIDEO_OUT
NORMAL_A
P.CON+8V
GND
P.CON+5V_A
V.REC_ST_H
CTL+
CTL-
P.CON+8V_B
Y/C_AUDIO
GND
HOT
V.SYNC
FROM/TO Hi-Fi/DEMODULATOR
G-10G-9
PCB010
VMC293
0.7
AE HEAD(-)
FROM DVD IN/OUT
FROM/TO DIGITAL COMB FILTER
FROM/TO TV POWER
FROM CHROMA/IF
FROM/TO MICON
NC
NC
NC
+
Vref
2.3V
SP,LP
EQ
AMP
ALC
ALC
A-VCC
1
2
3
A-GND
HA
PRE GND
R
P
P
R
P
P
H
L
H
L
REC:LP<EP
PB:EP
DET
PB,EE
PB,EE
VREF
REC
AMP
MUTE
AUTO
BIAS
LINE
AMP
REC
FM-EQ
FM
AGC
VHS
SOPB
P
R
PB
FM EQ
P
R
S-EQ
MAIN
DE-EM
LIM
DOUBBLE
FM
DEM
SUB
LPF
B
S
DET
EMPHA
FIL
MAIN
4.7K
Y-VCC
V.SYNC
SEP
SEP
6DB
QV/QH
AGC
TC2
BAL
TC1
REG
4V
1
2
3
VDD 4Fsc
CLOCK
PLL
TIMMING OUT
DRIVER
AUTO-BIAS
CLAMP
CCD
VSS
OUT
IN
VCA
VCA
CLAMP
VCP
ALWAYS
5V
B
VX01
320FH
VCO
SLD
PHASE
EQ
fo-ADJ
PHASE
EQ
Q-ADJ
FM
AGC
FIL
Y-GND
R
P
FBC
1/2
VIDEO
AGC
Y/C
MIX
NC1
N.L.
DEEM
Y-LPF
CLAMP
DETAIL
ENH
NL
EMPHA
NL
EMPHA
FM
MOD
NORMAL
R-EQ
TEST
YNR/COMB
3.58M
BPF1
B.D
P
PB
AMP
CNC
BGA
BGA
BGA
R
P
AFTER
BEFORE
3.58M
BPF2
B-UP
AMP
Main
CONV
ACC
AMP
DET
ACC
C-LPF
4.21M
BPF
Sub
CONV
R
R
P
PP
LPF
RP
REC
AFC
PB
APC
REC
APC
P
R
R
P
R
P
C-VCC
SERAIL
DECODER
C-GND
C-ROT
RF-SW
IN
AUDIO
MUTE
HA SW
ENV
DET
ACC
DET
HA VCC
COMP
OUT
KILL
DET
DET
CHROMA
GND
HA
R
R
P
P
R
PB-C
PB-C
R
R
P
P
VSS
SYNC
2.2
0
1.8
4.0
0.7
0.7
0.7
5.0
1.7
1.8
0
2.0
2.0
2.0
0
2.2
4.9
2.3
0
2.0
2.2 2.2 2.3 2.2 2.2 2.5 2.3 2.2 2.3 2.4 5.0 1.0 1.0 1.7 1.4 0 1.5 0.1 2.2
1.8
2.8
4.9
0
3.6
2.9
1.6
2.3
2.3
2.0
4.0
2.0
2.6
3.1
3.1
2.8
3.0
0
1.7
0
0.82.205.05.0
2.3
3.33.34.02.61.95.04.84.84.80002.80.5
0
0
0.7
0
0
0
0
0
0
0
4.8
4.0
3.4
1.7
0
2.3
NC
SP-CH1 (R)
SP-CH2 (L)
EP/LP-CH1 (R)
EP/LP-CH2 (L)
HF1 (R)
HF COM
HF2 (L)
SP COM
EP/LP COM
FROM/TO CYL
5.3
5.2
0
NC
0
4.9
4.9
5.0
5.0
0
5.0
0
15
11
12
14
13
FE HEAD(GND)
FE HEAD(HOT)
TO FULL ERASE HEAD
CTL+
CTL-
AE HEAD(+)
AUDIO REC
AUDIO PB
FROM/TO HEAD AUDIO CONTROL
FROM REGULATOR1
(VCR PCB)
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM