Toshiba VTW2185 Service Manual page 67

A B
8
FROM/TO REGULTOR1
AT+11.5V
P.CON+30V
P.CON+5V_C
P.CON+8V_A
P.CON+9V
7 GND
FROM/TO SECAM CHROMA/HI-FI
REAR_A_IN_L
REAR_A_IN_R
MONITOR_A-L
MONITOR_A-R
REC_TU_A-L
REC_TU_A-R
6
FROM/TO IF
SH6001
CP6001 (CP6001)
18
1 P.CON+5V
2 GND
3 TU VIDEO
4 AFT
5
5 SIF1
6 NC
L6053
7 P.CON+5V
100uH 9A06B
8 SIF/AGC CTL
9 AGC
C6001
10 GND
0.1 B
11 IF
12 SECAM VL-H
13 IF MOD
FROM/TO NICAM
4
CP6602 (CP6602)
5 NC
4 REC_SIF
3 REC_TU_AU-R
2 REC_TU_AU-L
1 RESETQ
FROM/TO NICAM
CP6601 (CP6601)
1 P.CON+8V[VCR] P.CON+8V[VCR] P.CON+8V[VCR]
3
2 SDA SDA SDA SDA SDA SDA
3 SCL SCL SCL
4 GND GND GND
5 GND GND GND
6 TU AUDIO-L TU AUDIO-L TU AUDIO-L
7 TU AUDIO-R TU AUDIO-R TU AUDIO-R
8 SIF SIF SIF
9 TU AUDIO TU AUDIO TU AUDIO NC
C4258
10 MONITOR_A-L
C4257
11 MONITOR_A-R
1 B
12 SOUND-L
13 SOUND-R
2
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
1
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-21
C
DEMODULATOR/21PIN SCHEMATIC DIAGRAM
NC
14 15
11 IF
0
NC
10
0
9 +30V
29.8
NC
8
0.1
W888
7 +5V
4.7
NC
6
0.1
R6006
SDA
5 SDA
4.6
100
R6004
SCL
4 SCL
4.6
100
3
0.3
NC
2
18.5
L6056
1 AGC
4.2
W808
REC_TU_V 10uH
12 13
CD6001
REC_AFT
CUH18001
REC_SIF
P.CON+5V_C
REC_AGC_CTL
AGC_R
TP4201
NC
VIDEO OUT
REC_SVL-H
36
IF_MOD
R4224
68 1/4W
REC_SIF
21PIN JACK
REC_TU_A-R 0 2.5 0 0
J4201
035_0_9972_05
REC_TU_A-L
21 19 17 15
NICAM_RESET
20 18 16
0 0 0
R4217
75 R4216
21_Y
75
P.CON+8V_A
SDA
W887
SCL
REAR_V_IN
(W128)
SW
Q4210
KTC3875S_Y_RTK
DEC_TU_A-L 0
R4210
TUNER_ON/OFF
DEC_TU_A-R
4.7K 0.7
0
TU_SIF
MONITOR_A-L
1 B MONITOR_A-R
SOUND_A-L
SOUND_A-R
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
C
D E
(VCR PCB)
C4201
6.3V 100 YK
L4202
100uH
0305
8.5
0.5
BUFFER
Q4201
1.8
KTC3875S_Y_RTK
0
BUFFER
R4225
1.8
Q4202
2SA1037AK
100
0
C4209
16V 10 KA
C4229
16V 10 KA
MUTE SW
Q4211
KTC3875S_Y_RTK
0
0.7
35
0
0 0 0 0 0 0 0
13 11 9 7 5 3 1
14 12 10 8 6 4 2
0 0 0 0 0 0 0
NC NC
L4201
C4215 C4216
REAR_A_IN_R
10uH
0.0022 0.0022
B B
KTC3875S_Y_RTK
L4203
REAR_A_IN_L
10uH
(W138) W899
CAUTION: DIGITAL TRANSISTOR
D E
F G
P.CON+9V
R4239
4.7K 1/4W
5.1
0
PERI SW
Q4207
KTC3875S_Y_RTK
0
C4228 C4226
R4209
680 16V 10 KA 1
C4223
R4220
680 16V 10 KA
11.1 5.7 0
3 2 1
4.9
MUTE SW
Q4217
KRA102SRTK
0
0
4 5 6
6.5 0 6.5
R4204
C4255
2.2K
16V
0
0 MUTE SW
MUTE SW R4203 Q4218
0 11.1 5.7 0
0.7
Q4205
KTC3875S_Y_RTK
0
3 2 1
2.2K
0
4 5 6
C4254
6.5 0 6.5
16V
KA
TUNER VIDEO SIGNAL RECORD LUMINANCE SIGNAL
TUNER AUDIO SIGNAL PLAYBACK LUMINANCE SIGNAL
AUDIO SIGNAL(REC) RECORD COLOR SIGNAL
AUDIO SIGNAL(PB) PLAYBACK COLOR SIGNAL
F G
H
8
FROM/TO CHROMA/IF
GND
REC_TU_V
AGC_R
REC_AFT
TU_SIF
REAR_V_IN
21_R
7
21_G
21_B
21_Y
JACK_VIDEO
FROM/TO MICON
NICAM_RESET
REC_SVL-H
REC_AFT
REC_AGC_CTL
SCL
6
SDA
IF_MOD
EXT_IN_L
TU_AUDIO_MUTE_H
TUNER_ON/OFF
21PIN/DVD
FROM/TO Y/C/A/H.AMP
REC_TU_V
REAR_V_IN
5
DEC_TU_A-L
B
C4204
DEC_TU_A-R
1 B
FROM/TO DVD I/O
AT+11.5V
P.CON+5V_C
SOUND_A-L
SOUND_A-R
DVD_AUDIO_L
21PIN/DVD
4
DVD_AUDIO_R
DVD_AUDIO_L
10
KA
3
DVD_AUDIO_R
10
2
PCB010
VMC296
1
H
G-22