Chroma/If - Toshiba VTW2185 Service Manual

A B
FROM/TO DEMODULATOR/21PIN
8
JACK_VIDEO
21_B
21_G
21_R
21_Y
REAR_V_IN
FROM/TO DVD I/O
FRONT_V_IN
ZERO
DVD_A_OUT_L
7
DVD_A_OUT_R
TEST POINT
CP603 07JQ-ST
REC_AFT
7 REC_AFT
AGC_R
6 AGC_R
R614
AGC_M
5 AGC
100 1/2W IIC_OFF
4 IIC_OFF
SDA
3 SDA
SCL
2
SCL
1 GND
6
13 12
AGC 1
0.2
W865
TUNER_CTL
2 NC
7.2
3
1.3
5
W953
SCL 4
4.8
W844
SDA 5
4.8
6
NC
L602_2
0.1
P.CON+5V_A
+5V 7
5.0 100uH
9A06B
8
NC
0.2
P.CON+30V
+30V 9
29.9
10 NC
0
IF 11
0
15 14
4
R624
NC
75
FROM/TO DEFLECTION L607
C644
CD602 (CP3603)
0.33uH 0.022 B
CH01004A
1 GND
CD601
CH01429A
3
FROM/TO T'TEXT/RGB SW
0
SWD_VIDEO
DVD_Y
-0.2
SW_OUT_B
2.8
BUFFER
SW_OUT_G
2
Q613
SW_OUT_R
KTC3875S_Y_RTK
SW_OUT_Y
0
KTC3875S_Y_RTK
R674 R676
0.6
TEXT_SYNC
Q612
BUFFER
SW_VIDEO_OUT 4.7K 3.3K
0.2
MO_SYNC
FROM/TO Y/C/A/H.AMP
P.CON+5V_C
Y/C_VIDEO
SW_VIDEO_OUT
DVD_VIDEO
NOTE:THE DC VOLTAGE EACH PART WAS
1
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK. CAUTION
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-19
C
CHROMA/IF SCHEMATIC DIAGRAM
P.CON+8V_A
L611
P.CON+5V_C
100uH
SAW FILTER
P.CON+9V CF602_1
SAF32.9MC70Z
2 3 4 5
C633
0.001 B
4.5
IF AMP L616
Q604
0.6
2.2uH
KTC3881S-RTK
0.0
C634
0.001 B
W820
TU_SIF
L614
10uH
NC NC
2.6 2.6 2.7 3.3
1 2 3
56 55 54 53
2.6 2.6 0 5.1
NC
R635
P.CON+9V
100 1/2W
6.2
PRE AMP
1.3
Q607
R637
2SC3000
SDA
0.6
100 R640
SCL
100
P.CON+5V_C
C665 R681
1 B 12K
0.6
2SA1037AK R685
Q614
BUFFER 5.2 820
1/4W
4.8
C666
1 B
R683
330K
ATTENTION
:SINCE THESE PARTS MARKED BY ARE :LES PIECES REPAREES PAR UN
CRITICAL FOR SAFETY,USE ONES DANGEREUSES AN POINT DE VUE SECURITE
DESCRIBED IN PARTS LIST ONLY N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
C
D E
(VCR PCB)
L613
100uH 0305
C621
0.1 B
L608
BUFFER
Q602
12uH 2SC2412K
R604 R649
270 390
SAW FILTER
CF601
J1951M
2 3 4 5
NC
NC
C601
3P CH
NC
2.8 2.6 2.6 4.6 2.1 0 4.7 5.1 4.6 3.4 4.2 4.2 8.0 4.4
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
52 51 50 49 48 47 46 45 44 43 42 41 40 39
5.0 5.0 4.2 3.1 2.2 2.2 5.9 8.0 5.4 0 3.8 2.6 2.2 0
R639
3.3K
W882
C677
0.068 B
D609
MTZJ10B
R648
18K
R647
5601/4W
5.0
R651
0
3.3K 1/4W
0
DEFLECTION SIGNAL
CAUTION: DIGITAL TRANSISTOR
AUDIO SIGNAL(REC)
ETANT
AUDIO SIGNAL(PB)
TUNER AUDIO SIGNAL
TUNER VIDEO SIGNAL
D E
F G
VIDEO SW
IC603 LA7956 (VIDEO)
6dB
video switch
driver control
1 2 3 4 5 6 7 8 9
4.4 4.8 4.8 4.3 0 4.4 9.4 3.8 4.4
C660
SWD_VIDEO
C635
10V 100 YK
C663 D610
W886
P.CON+9V
SB140-EIC
1 B 16V 100
C672
REAR_V_IN
YK
C671
1 B
C662
FRONT_V_IN
8.0 0.01 B
0.8
1 B
0.9
SW_VIDEO_OUT
C606 6.3V 220 YK
W821
TEXT_SYNC
DVD_C
C636
REC_TU_V
R661 C608
Y/C_VIDEO
16V 10 KA
680
10V 100 KA
C667
21_B
50V 0.1 KA
C679
21_G
50V 0.1 KA
C680
21_R
50V 0.1 KA
21_Y
0 4.3 2.9 4.5 1.8 1.9 3.5 3.7 3.6 0
19 20 21 22 23 24 25 26 27 28
38 37 36 35 34 33 32 31 30 29
3.3 2.1 5.0 5.0 5.0 4.1 4.9 4.9 4.9 4.0
B.OUT
G.OUT
R.OUT
SW_OUT_B
SW_OUT_G
P.CON+8V_A VCR/DVD
SW_OUT_R
SW_OUT_Y
V_AMP
JACK_VIDEO
W867
ABCL
V_OUT
H_OUT
HD
R664
P.CON+9V
680 1/4W
8.0
CUT_OFF
5.0
0
SW
Q603
SW
KRA102SRTK
Q611
KTC3875S_Y_RTK
RECORD LUMINANCE SIGNAL R.SIGNAL
G.SIGNAL
RECORD COLOR SIGNAL
B.SIGNAL
PLAYBACK COLOR SIGNAL
PLAYBACK LUMINANCE SIGNAL
F G
H
FROM/TO MICON 8
AV2
AV1
H_CTL
HD
PROTECT
AGC_M
SDA
SCL
IIC_OFF
DVD_RESET
TUNER_CTL
MO_SYNC
7
VCR/DVD
FROM/TO DEMODULATOR/21PIN
AGC_R
REC_AFT
REC_TU_V
TU_SIF
GND
FROM/TO REGULATOR1
GND
6
HD
ABCL
H_OUT
V_OUT
V_AMP
P.CON+8V_A
P.CON+5V_C
P.CON+9V
P.CON+30V
5
P.CON+5V_A
FROM/TO CRT/POWER_SW/OPE
CP851 (CP853B)
4
B2013H02-7P
CUT_OFF
CUT_OFF 7
GND 6
R.OUT
R.OUT 5
G.OUT
G.OUT 4
B.OUT
B.OUT 3
SPOT_L 2
2.7
NC WIDE SW 1
R652
0
PROTECT SW
Q610
1K
0 KTC3875S_Y_RTK
SW
3
0 Q608
2SA1037AK
FROM/TO AUDIO/VIDEO
4.9
0
CP8002 (CP8502)
IMSA-9604S-12Z14
DVD_VIDEO
12
CVBS
11
GND
DVD_C
10
C(CVBS)
9
GND
DVD_Y
Y(G) 8
GND 7
DVD_A_OUT_L
6
AUDIO-L
GND 5
2
DVD_A_OUT_R
4
AUDIO-R
ZERO
ZERO 3
DVD_RESET
DVD RESET 2
GND 1
PCB010
VMC296
1
H
G-20