Toshiba 21N21B2 Service Manual page 21

A B
8
R104 R103 R102
2.2K 1.2K 820
7
R120
C129
4.7K
220P CH
C140
220P CH
6
C108
X101
22P CH
100CT4R013
C109
4MHz
22P CH
1
5
R107 1K
D102
MTZJ5.1B
D108
4
1SS133
3
4
2
1
A B
G-1
C
MICON/TUNER SCHEMATIC DIAGRAM
LED DRIVE
ON TIMER
Q102
D103
2SA1037AK
R137
R101
3.6 3.1
180
LTL-1CHGE-002A
390 LED DRIVE
0
STAND BY/P.ON
GREEN
Q103
D101
2SA1037AK
3.7
SLR-342VCT32
4.9
RED
MICON W/T.TEXT IC
IC101 OECF012A
4.9 4.9
KEY_IN REMORT
4.9 4.9
POWER FAIL RESET
0 0
FORTHD VCR 2 A MUTE
0 4.9
FORTHD VCR 1 STEREO RESET NC
0 0
EMERGENCY
DEGAUSS
C141 0.1 B
R125 4.7K
2.2 0
OSC_IN TU/RGB
2.3 0
OSC_OUT NC (BBE-H)
0
1.8
ON_TIMER ATS
0 4.9
NC P4.6/PWM6 STANDBY LED
0 4.8
NC SECAM_VL_H POWER
0
0
NC TUNER HI NC NC
R133
0 4.9
10K
H_CONT
I2C_OFF
C143
0
0.5
0.1 B
PROTECT NC P3.5 NC
R123
0 0
10K
AV2 NC P3.4 NC
R124
0 0.7
10K
AV1 OSD_B
2
4.6 0.2
V_SYNC OSD_G
R116
3
0.5 0.2
10K
H_SYNC OSD_R
R131
4.9 0
100K
AVDD1 OSD_FB
C132 30P CH
2.0 4.9
R110
PXFM SDA
5.6K
0 4.9
JTRSTO SCL
0 4.9
GND VDD
0 1.3
AGND JTDO NC
1.4 0
C111_1
CVBS1 WSCF
0.47 F
1.2 0
R108 C112
CVBS2 VPP
270 82P CH
4.8 4.9
C101
NC JTMS AVDD3
68P CH
4.9 4.9
AVDD2
TEST0
C105 1.6
1.4
NC MCFM
CVBSO
0.1 B
2.1 4.8
C106 R111
TXCF JTCK NC
0.022 B 15K
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(MAIN PCB)
OS101
RPM7138-H5
R132 4.9 0 4.9
C122
0.0
560
16V 10 KA
R151
4.7K
R122
4.7K
R152
100 1/4W
R148
10K
R134
10K
C125
5
R144 2.2K 1/4W
100P CH
C126 R140 2.7K
6
R145 2.2K 1/4W
100P CH
C127 R141 2.7K
7
R146 2.2K 1/4W
100P CH
C128 R142 2.7K
8
R147 1.2K 1/4W
150P CH
R143 1.5K
L101
C114 0.1 B 10uH 0305
C115
10
6.3V 2200 YK 9
C118
L102
0.1 B
10uH 0305
4.9 0 4.9 4.9
8 7 6 5
R113
5.6K
1 2 3 4
0 0 0 0
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
TU001 TUWRF4EK-778F2A
CP001
003P-2100
RESET IC
IC102 PST3231NR
RESET NC NC
R121
100 1/4W
VCC
GND NC NC
R128
100
R129
100
F G
H
8
ACCESSORY
UM-4
BT001
R03(AB)2PXGPI
UM-4
TM101
BT002
RC-GX010
R03(AB)2PXGPI
7
TEST POINT
CP101
06JQ-ST
GND 1
I2C_SCL 2
I2C_SDA 3
I2C_OFF 4
RF_AGC 5
NC 6
6
FROM/TO POWER
P.CON+5V
TUNER_BT
P.FAIL
GND
AT+5V_AVDD
AT+5V_DVDD
DEGAUSS
POWER
EMERGENCY
5
FROM/TO IF/CHROMA
RF_AGC
IF
OSD_B
OSD_G
OSD_R
OSD_FB
CVBS_TXT
V_OUT
4
PROTECT
H_CONT
SCL
SDA
TO SOUND AMP
A_MUTE
FROM/TO DEFLECTION/CRT
AFC
3
PROTECT
FROM/TO 21PIN
AV1
FORTHD_VCR_1
2
PCB010
TMC572
1
H
G-2