Memorex MT2252 Service Manual page 61

A B
8
7
2
6
R109
4.7K
R116
OS101 47K
R117
PIC-28143SY-2
4.7K
5
C125
0.01 F
R115
47K
4
3
2
CAUTION: DIGITAL TRANSISTOR
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-1
C
MICON/TUNER SCHEMATIC DIAGRAM
TU001 ENV56D66G3
ACCESSORY
TM101
RC-DW
MICON IC
IC101 OEC7044C 3
4.9 0
P50/H.SYNC RED R
4
4.9 0
P51/V.SYNC GREEN G
0
0
P00/EXT MUTE BLUE B
4.9 0
P01/I2C_OFF
OUT1/BLANK BL
0
0
P02/AUDIO MUTE P20/AV2 NC
0
0
P03/(Surround) P21/AV1
NC
0 0
P04 P22/POWER
0 0
P05/(Center_SP) P10/DEGAUSS_H
R134
R105
4.8 4.9
INT2/P.FAIL SCL1
10K
4.8 NC
INT1/REMOCON SCL2
0
R106
R118
5.0
3.9
P23/SYNC
SDA1
1K
NC
NC
P24
SDA2 0
0
16.0
X-RAY TEST SW
C134 NC 0 0
P25/ON_TIMER
AD1/X_RAY_TEST Q101
0
100P SL DTC114TSTP
R107 0
4.9 0
AVCC X-RAY
C122
R130
10K
3.0 3.2
50V KA 1 1K
HLF AD4/AFT
C121_1 220P B
0.8 4.9
C120_1
V.HOLD
AD5/KEY1
R112
C124 R133 0.001 Y
3.4 4.9
2.2K
AD6/KEY2
CVIN
R113
0.1 F 470
0 4.9
2.2K
CNVSS
RESET
X101
1
C114
EFOEC8004T4
3.7 3.6
Xin OSC1
15P CH
C113
4.2
Xout OSC2
4.1
15P CH
0 4.9
VSS VCC
C119
0.01 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)
C003
50V 4.7 KA
R001
R002
18K 1/2W 18K 1/2W
R123 4.7K
R122 4.7K
R121 4.7K
R120 4.7K
2.2K
2.2K
W827
R101
560
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 ARE
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
W862
OSD_R
W863
OSD_G
W864
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
+B
GND
R126
2.7K
R128
560
FROM/TO SOUND
GND
SDA
SCL
AUDIO_MUTE
ATTENTION: LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
F G
H
8
7
6
5
4
3
2
PCB010
TMA501
TUNER VIDEO SIGNAL
R.SIGNAL 1
G.SIGNAL
B.SIGNAL
DEFLECTION SIGNAL
H
G-2