Toshiba SD-25VLSR Service Manual page 130

A B
8
FROM/TO SYSCON/SERVO/TIMER/VPS
V_H.SW
NA_REC-H
DUMMY_V.SYNC
A_MUTE-H
IIC_DATA
IIC_CLK
ENV.DET
CTL+
7
CTL-
Y/C_VIDEO_OUT
FSC
S_DET_OUT
MESECAM-H
FROM 21PIN/TUNER
SWD_VIDEO
6
TU_VIDEO
FROM POWER
P.CON+5V
GND
FROM DISPLAY
FRONT_V_IN
FROM/TO Hi-Fi/DEMODULATOR
NORMAL_AUDIO_IN
5
NORMAL_AUDIO_OUT
HF1
HF2
HF_COM
FROM/TO CYL
CP101
TOC-C09X-A1
HF1
9 HF1 (R)
HF_COM
8 HF COM
HF2
7 HF2 (L)
SP-R
6 SP-CH1 (R)
SP_COM
4
5 SP COM
SP-L
4 SP-CH2 (L)
EP-R
3 EP/LP-CH1 (R)
EP_COM
2 EP/LP COM
EP-L
1 EP/LP-CH2 (L)
FROM/TO HEAD AUDIO CONTROL
CP102
IMSA-9604S-06C
1 AE HEAD(-)
2 AE HEAD(+)
CTL-
3 CTL-
3 CTL+
4 CTL+
5 AUDIO PB
6 AUDIO REC
24
FFC
CD102
OSC
COIL,BIAS OSC
2F061502 Q102
KTC3203_Y
1616003
5.0 5.1
5.1
2
R103
5.0
R101 0
TO FULL ERASE HEAD 10K
2.2K
0
C103
CP103
NORMAL AUDIO
B2013H02-2P
REC ST SW
0.0047 B
Q101
1 FE HEAD(GND)
KTC3875S_Y_RTK
2 FE HEAD(HOT)
1 NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
H-9
C
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
MESECAM-H
ENV.DET
C112
C108 0.1 B
0.01 F
C109 16V 47 KA
L103_1 22uH
P.CON+5V
SP-L
SP_COM
SP-R
EP-L
EP_COM
EP-R
R107 R111
330K 8.2K
L113
C110 1uH
0.01 B
C114
16V 22 KA
L102
C107
R109
1 6
220P CH 5.6K 1/4W
2 5
PB SW
PB SW
Q103
3 4 0
Q104
DTA124EKA
R105
0.7 KTC3875S_Y_RTK
5.0 5.0
15K
0
5.2
0
PB SW
R106
Q105
0.7 KTC3875S_Y_RTK
15K
0
C
D E
(VCR PCB)
H.SW
21
TP102
NC
V.ENV
25
R116
TP103
NC
100
Y/C/AUDIO/HEAD AMP IC
IC101
HA118225F
NC NC
2.6 0 0 2.8 2.2 2.7 1.3 1.3 0.1 2.2 1.0 2.0 2.5 0.3 2.2
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66
C117
5.0
B-Y
CCD
TANK Invert
X-Tal
CONT
0
50V 1 KA VCO/OSC
MESECAM CR DET
DET
1.7
REC Killer PB
APC APC
5.0 Comp
PRE/REC
ENV
HPF DET
Vcc DET APC SW
C121 2.2
DET L-SECAM
SW44 SP2 Mix Level SW36
0.01 B BE C-ACC;ON
2.2
ADJ
Chroma
SW45 L-SECAM ACC
SP2
C122 2.2 SW42
SP1 SW39
CH2
SW35
L-SECAM
SW46
C-ACC ;
0.01 F 0 REC TRAP ON
LPF
Through
SW37
PER/REC REC
CH1
SP1 +
Vcc MUTE
C123 0 L-SECAM REC TRAP
VCA
OFF
SW47 SP2 SP
CH2
0.01 F 0
FH TRAP
SW40 CTL TRAP
SW48
SW41 P
C124 0 SP2 SP1 SP EXT P
CH1
ACC
SW43 2M LPF
SW38
SW49 INT R
0.01 F 5.0
HPF SQPB
AUDIO Vcc DL
C118 0.4 SP1 SQPB
SW8
AUDIO ALC SQPB
EXT INT P.EQ
SW12
2.5 P
50V 4.7 KA
LPF
TH SW9
TRAP
SW4 R G-EQ
2.5
REC 629K FM
SP ON R DO
P Filter TRAP AGC
Det
0 DLIM
PRE AMP SW5 DET
FM MOD
DET MEMO
SW3 REC
0 SW11 P
VCA
ON f0/Dev ADJ
Sub LPF
R
SW2 EP SW6 SW10
2.6
MAIN
ON
REC EQ EMPH
REC FBC +ALC
CARRIER
0 PB AGC +APL
AUDIO
OFFSET
GND SW7
W.C/DC MAIN
2.6
DE EMPH
SW1 BAND
P R
GAP
Y-GND SW13
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0 0.2 0.1 5.0 2.1 2.6 2.8 1.3 1.3 1.9 3.0 0.6 0 2.4 2.8 2.4 2.8 1.9 2.8
NC NC
R112
18K
23
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
D E
F G
20
W802
L111_1
R132 22uH
10M 1/4W
NC
2.2 2.0 2.2 1.8 4.1 5.0 5.0 2.3 2.1 0 2.0 0 2.6 5.0 2.0
65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
C Vcc C GND CCD 5.0
GND
Clock Driver
Down
LCVCO 3.1
Conv
2fsc
Y-CCD
0.1
Mode
REC Discri ACC ACC Chroma
Control
APC Det SW ACC Det
SW30
5.0
P C-CCD
VCA
3.1
CLPF1 CLPF2 R
R121
R P SW29
3.1
C.K + CCD
P R LPF 270
SW27
4Phase L-Det 0
SW33
P
NP Conv C.K
R P
Main Main
+ 2.1
R
Conv1 Conv2
SW51 N.L SQPB L-SECAM
P R R P De-Emph EQ
SW31 2.0
SW26 EXT
Pilot
B.D
SW32
R Erase INT
L-SECAM 2.5
6dB
4.43PAL MPAL
SECAM
AMP
CHANGE DELAY Y-LPF C172
Delay SW19
2.1
SW34
P
REC TRAP
BPF SW17 L-SECAM
HiFi TRAP LPF
C-Delay SQPB 1.5 25V 10 KA
R SW15
SW28
SQPB
P
C-Suquelck 2.2
R
N.L SW20
DEH
YNR
Emph C169
R P 3.1
S-Det
GCL
NP-NC
0.1 F
PC GCL 2.4
TRAP-NC
SW24 DO
P
3.1
R
VIDEO AGC
SW52 GCL
SW18 DO
R
/REC 2.69
ATP
SW16
CLEAR SYNC NC
FEED BACK
V-AMP
CLAMP
2.2
Suquelck
ATT
VIDEO ALC
ATT
(-4dB)
(-10dB) R*SDECK
2.8
AGC PG
SYNC
SW22 PG
Det
35Pin Sep
ATT ATT ATT
0.3
(-6dB) (-10dB) (-10dB)
GCL R*SDECK
NC
Y-Vcc
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
0 2.8 5.0 2.3 0.8 2.1 2.8 1.7 0 2.7 2.9
22
NC
NC NC
C160
L112
0.1 F
22uH 0305
CAUTION: DIGITAL TRANSISTOR
F G
H
8
7
P.CON+5V
6
5
C138 L106
10P CH 82uH
C179
0.01 B
C180
50V 3.3 KA
4
C177
100P CH
C174
0.1 F
Y/C_VIDEO_OUT
3
DUMMY_V.SYNC
P.CON+5V
2
PCB010
VMD350
1
H
H-10