Operation/Display - Toshiba SD-V340SC Service Manual

A B
8
FROM POWER
7
P.CON+5V
GND
FROM/TO Hi-Fi/DEMODULATOR
FSC
TO_NORMAL_A
FROM_NORMAL_A
HF2
HF_COM
6
HF1
FROM/TO CYL
CP101
TOC-C09X-A1
9 HF1 (R)
5
8 HF_COM
7 HF2 (L)
P.CON+5V
6 SP-CH1 (R)
5 SP_COM
4 SP-CH2 (L)
3 EP/LP-CH1 (R)
2 EP/LP COM
1
EP/LP-CH2 (L)
4
W852
P.CON+5V
FROM/TO HEAD AUDIO CONTROL C129
R105 1 F
CP102_1
TO_NORMAL_A
IMSA-9604S-04C
1K 1/4W
4 AUDIO REC
3
3 AUDIO PB
CTL+
C174
2 CTL+
6.3V 47 KA
CTL-
1 CTL- P.CON+5V
5.2
SW
R140
0
V.REC_ST-H
Q103
DTA124EKA
2.2K 1/4W
COIL,BIAS OSC
5.3
1626010
6 1
R101
5 2
560
4 3
W819
0 20
FFC
2
R102
AUDIO PB SW 0.7
Q101
CD102
10K
KTC3875S_Y_RTK
2F041508 0
TO FULL ERASE HEAD
0
R103
AUDIO PB SW 0.7
CP103 Q102
10K
B2013H02-2P KTC3875S_Y_RTK
0
GND
2 FE HEAD(GND)
HOT
1 FE HEAD(HOT)
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
A B
H-9
C D
Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM
4.8 4.8 0 5.2 0 5.2 5.2 5.2
60 59 58 57 56 55 54 53
COMP OUT
C166
ENV AUDIO C-ROT C-GND
2.1
SERAIL
KILL DET MUTE RF-SW
HA SW IN
0.068 B DET DECODER
0
HA
GND
C169
2.9
CHROMA
DET
0.047 F
C165
1.6 ACC
DET
0.047 F
1.8
P
1.9
R
P R
H
1.8
P L
L107
C-LPF
5.0
HA VCC
22uH 0305
1.8
+
1.6
0 HA
PRE GND
1.8
P H
L
1.8
R
1.8
P
0
A-GND
2.3
1
ALC R
2
LPF
3
P
4.9
A-VCC
ALC
2.3
DET VREF
C105
0 PB,EE
PB,EE
EQ
16V 22 KA REC:LP<EP
C109
AMP
2.3
PB:EP
SP,LP
Vref
0.1 B
2.3V
1 2 3 4 5 6 7 8
Y/C/AUDIO/CCD/HEAD AMP IC
2.3 2.3 2.3 2.3 2.3 2.3 0 2.3
IC101
LA71206M-MPB-E
R109
R114
1K
1/4W
20K
C122
L101 BIAS CTL
Q105
0.0012
KTA1266
L102 C112
R112
0
100uH 0305 5.2 6.3V 220 KA
5.2 330K
C118
R108
0.01
0 B
22K
0 BIAS OSC C110
0
Q104
KTC3203_Y
16V 47 YK
C D
E
(VCR MT PCB)
BUFFER
Q109
KTC3875S_Y_RTK
4.9
R129
3.9
1.8K
3.3
C142
6.3V 47 KA
C143
1 F
R127 C141
17
680K 0.01 B
NC
4.9 2.1 4.8 4.1 3.2 3.3 3.2 4.9 4.9 1.2 2.2 0.8
52 51 50 49 48 47 46 45 44 43 42 41
BUFFER
ALWAYS VDD 4Fsc CLOCK
C-VCC
0
320FH 5V Q107
SLD VSS
VX01 B PLL
VCO
KTA1504S_Y_RTK
1.6
P R
TIMMING OUT
1.6
OUT
0
REC PB REC 2.2
0
APC APC AFC DRIVER AUTO-BIAS
VSS
3.2
CCD CLAMP
BEFORE
IN
R P BGA
C133
BGA
2.5
AFTER
CNC
BGA 1 B
C134
R P VCA
3.2
PB VCA
AMP
1 B
3.58M
C137
BPF2 3.3
CLAMP
B.D
1 B
Main B-UP
CONV AMP P 2.6
VCP
ACC 3.58M
2.6
AMP BPF1 1
P P R
2
3
PB-C 4.1
ACC REG
4.21M
DET VIDEO 4V
0.1
BPF
AGC
YNR/COMB
2.3
Sub
P R R
CONV
P C135
1/2
BAL
DETAIL R 2.3
CLAMP N.L.
ENH PB-C FBC TC1
DEEM
P 50V
0.22 YK
Y-LPF 2.1
R
NL NL Y/C
NC1
P
EMPHA EMPHA R MIX
R
C136
P
AGC 1.6
FM
TC2
MOD 50V 22 YK
3.6
R-EQ
NORMAL QV/QH 6DB
TEST
DOUBBLE FM SUB
LIM DEM
LPF
SYNC 4.1
SEP
LINE
REC
AMP MAIN
FM-EQ
5.0
DE-EM V.SYNC
SEP
FM PB
4.4
S-EQ
P R AGC FM EQ P R P R Y-VCC
VHS SOPB
REC C132
MUTE
3.2
AMP
1 B
PHASE PHASE MAIN 2.1
AUTO FM
EQ EQ S B
BIAS AGC EMPHA
Y-GND
fo-ADJ Q-ADJ FIL FIL DET
9 10 11 12 13 14 15 16 17 18 19 20
2.3 0.8 4.8 1.1 1.1 1.4 2.0 0 2.6 NC 2.6 0.2 2.8
B
19
V.ENV
18
TP101
NC
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
E
F G
FSC
L103
4FSC
5.6uH
R124
82K
R122
100K
C138
50V 1 YK
TU/REAR_V_IN
C139
F
FRONT_V_IN
C102
R141
DVD_V_OUT
100
25V 10 KA
16
W801
Y/C_VIDEO_OUT
C.SYNC
DUMMY_V.SYNC
L104_1
P.CON+5V
22uH 0305
R144
220K 1/4W
CAUTION: DIGITAL TRANSISTOR
F G
H
8
7
FROM/TO TUNER/JACK
DVD_V_OUT
TU/REAR_V_IN
Y/C_VIDEO_OUT
FSC
FROM OPERATION/DISPLAY
FRONT_V_IN
6
FROM/TO SYSCON
4FSC
Y/C_CLK
Y/C_DATA
Y/C_CS
DUMMY_V.SYNC
V.REC_ST-H
5
C.ROTARY
AUDIO_MUTE-H
CTL-
CTL+
H.AMP_SW
COMP
ENV.DET
H.SW
C.SYNC
4
3
2
PCB010
DME063
1
H
H-10