Toshiba 14N21BS Service Manual page 23

A B
8
7
FROM POWER
6
P.CON+8V
GND
P.CON+5V
5
4
FROM/TO SOUND AMP
AUDIO_OUT
FRONT_VIDEO_IN
SW_AUDIO_IN
SCART_AUDIO
FROM/TO MICON/TUNER
TU/RGB
3
IF
RF_AGC
H_CONT
SDA
SCL
HD
PROTECT
2
1
A B
G-3
C
CHROMA/SIF/VIF/21PIN SCHEMATIC DIAGRAM
CF202
TSF5372P
IN GNDOUTOUT
1 2 3 4
7.0
L206 C204 VIF PRE.AMP
W829
Q201
1.5
0.27uH 0.001 B KTC3881S-RTK
0.8
C212
0.01 B
2.7 2.8 4.8 3.1 2.7 2.5 2.5
1 2 3 4 5 6 7 8
56 55 54 53 52 51 50 49
1.5 4.5 0 4.9 5.0 5.0 4.2
11
C617_1
22 16V KA
H.CONT
5.1
Q603
0
2SC2412K
0.4
R602
R606
100
100
8.3
PROTECT
Q604
KRA102SRTK
8.3
560 1/2W
0
8.3
C631
PROTECT
Q602
0
50V 33 YK 2SC2412K
0
R620
270 1/4W
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(MAIN PCB)
5.0
3.9
SIF BUFFER
Q204
7
3.2 2SC2412K C629
R208
1K 16V 10 KA
W822
L204
7.9
18uH
2.9 BUFFER
Q202
2SC2412K
2.28
R217
S101X
8
1K
NC
VCO COIL
L207
3700005
NC
C201
3P CH
4.5 2.0 0 3.6 4.9 3.8 2.4 3.8 3.9 7.8 4.1 0 3.2 2.8 3.2
9 10 11 12 13 14 15 16 17 18 19 20 21 22
48 47 46 45 44 43 42 41 40 39 38 37 36 35
5.2 2.0 4.6 5.4 7.8 5.0 0 2.8 2.4 2.2 0 0.2 0 4.1 4.2
13
12
D604
11E1-EIC
17
R647
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
0
0
RGB SW
Q601
S101Y
0 2SC2412K
9
10
R702
3.3K
R706
1.7 1.7 3.4 3.6 3.4 0
23 24 25 26 27 28
1K 1/4W
R707
1K 1/4W
R708
1K
34 33 32 31 30 29
4.8 4.5 1.7 1.7 2.6 4.4
14 15 16
BUFFER
4.0
Q605
2SC2412K
4.6
8.3
CAUTION: DIGITAL TRANSISTOR
F G
H
8
7
6
21PIN
J701
0350_9982_05
L702
R714
10uH
75
5
R703
10K 1/4W
NC
R715
NC
R713
75
75
R221
4
75
R709
D709
75
MTZJ5.1B
FROM/TO DEFLECTION/CRT
B.OUT
G.OUT
R.OUT
H_OUT
3
VAMP
ABCL
V_OUT
AFC
FROM/TO MICON/TUNER
V_OUT
VIDEO_OUT
CVBS_TXT
OSD_B
OSD_G
2
OSD_R
OSD_FB
FOR_VCR
PCB010
TMB537
1
H
G-4