Memorex MT2252 Service Manual page 18

A B
8
7
6
OS101
PIC-28143SY-2
5
D199
4
MTZJ6.2B
3
2
CAUTION: DIGITAL TRANSISTOR
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
1
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-1
C
MICON/TUNER SCHEMATIC DIAGRAM
ACCESSORY
TM101
R25-1088
2
MICON IC
IC101 OEC7044C
4.9
P50/H.SYNC RED R
4
4.9
P51/V.SYNC GREEN G
R109
0
P00/EXT MUTE BLUE B
4.7K
R116
4.9
P01/I2C_OFF
OUT1/BLANK BL
47K
R117
0
P02/AUDIO MUTE P20/AV2
4.7K
0
P03/(Surround) P21/AV1
0
C125 P04 P22/POWER
0.01 F
0
P05/(Center_SP) P10/DEGAUSS_H
R131 R134
4.8
INT2/P.FAIL
SCL1
10K 1/4W
47
4.8
INT1/REMOCON SCL2
R115
3.9
P23/SYNC
SDA1
47K
NC
P24
SDA2
0
NC
P25/ON_TIMER
AD1/X_RAY_TEST
0
4.9
AVCC X-RAY
C122
R130 1K
3.0
50V 1 KA C121
HLF
AD4/AFT
200P SL C120_1
0.8
V.HOLD
AD5/KEY1
C124_1
0.001 Y
R133 1.5K
3.4
50V 0.1 KANP CVIN AD6/KEY2
0
CNVSS
RESET
1
3.7
Xin OSC1
4.2
Xout OSC2
X101
CSTS0800MG03-T2 0
VSS VCC
C119
0.1 F
C118
6.3V 470 YK
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.
C
D E
(MAIN PCB)
TU001 TECC1040PG32D
AGC
TP001
JWF-50K-1
C003
50V 4.7 KA
R001
68K 1W
3
R123 4.7K
0
R122 4.7K
0
R121 4.7K
0
R120 4.7K
0
0
NC
0
NC
0
0
3.3K
R105
4.9
NC
C117_1 47P SL
0
R106 3.3K
5.0
W827
C116_1 47P SL
NC
0
16.0
0
0 X-RAY TEST SW
C130 220P B Q101
DTC114TKA
0
0
R107 10K
3.2
R101
4.9
R112
560
4.9
2.2K
R113
4.9
2.2K
C114
3.6
15P CH
C113
4.1
15P CH
4.9
C101 0.022 F
5.0 5.0 0.0 5.0
5 6 7 8
4 3 2 1
0.0 0.0 0.0 0.0
CAUTION: SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D E
F G
FROM/TO CHROMA
AGC
TUNER+5V
IF
SYNC
I2C_OFF
Y_VIDEO
VD
HD
OSD_R
OSD_G
OSD_B
OSD_BLK
GND
POWER
AT+5V
AFT
SCL
SDA
RESET
FROM/TO DEFLECTION/CRT
X-RAY
X-RAY_TEST
FROM/TO POWER
DEGAUSS_H
GND
+B
R126
2.7K
R128
560
FROM/TO SOUND
SDA
SCL
AUDIO_MUTE
TUNER VIDEO SIGNAL
ARE ATTENTION: LES PIECES REPAREES PAR UN ETANT R.SIGNAL
DANGEREUSES AN POINT DE VUE SECURITE
G.SIGNAL
N'UTILISER QUE CELLS DECRITES
B.SIGNAL
DANS LA NOMENCLATURE DES PIECES
DEFLECTION SIGNAL
F G
H
8
7
6
5
4
3
2
PCB010
TMX458
1
H
G-2