Memorex MT2252 Service Manual page 62

A B
FROM POWER
8
AT+10V
GND
7
6
TO SOUND
5
STEREO+5V
W830
C620
R640
TU_AUDIO_OUT
50V 4.7 KA 1K
5
R632
100 1/2W
W817
4
50V
FROM/TO MICON/TUNER
3
IF
Y_VIDEO
AT+5V
SYNC
TUNER+5V
RESET
AFT
AGC
GND
HD
POWER
OSD_B
OSD_BLK
OSD_G
VD
2
OSD_R
I2C_OFF
SDA
SCL
1
A B
G-3
C
CHROMA SCHEMATIC DIAGRAM
KTC3203_Y-AT
4.97
6
2SD734(E,F)-AA
CF604
TPSRA4M50C00-A0
5.5
R615
CF603
470
SFSH4.5MCB
NC
2.9 2.3 0 8.2 8.2 3.9 4.8 5.5
48 47 46 45 44 43 42 41
R634 10K
2.3
3.0
AUDIO OUT
R611 10K
C604
2.3
AUDIO BYPASS
50V 1 KA
C658_1 0.001 Y
NC
EXT AUDIO IN
C623_2 100P SL
3.8
FM DIRECT OUT
46 SW REG CONT
C632 50V 2.2 KA
47 LIMITER IN
3.1
VIF VCO F/B
48 IF AGC
R618 10M
49 QIF OUT
9.2
VREG Vcc
3.0
VIF APC FILTER
2.6
VIF VIDEO OUT
CHROMA IC
0
VIF GND M61206FP
0
C621 0.01 F
0
AFT OUT
C626_1 64 VIF IN (1)
2.9
QIF IN
1 VIF IN (2)
C659_2
0.001 Y
R606 10K
470P B 1.8
RF AGC OUT
C606
2.9
RF AGC FILTER
SAW FILTER
0.22 KA
CF601 1.8
SAFGP45M7VHCZR
OUTOUT G IN IN
R604
1 2 3 4 5 6 7 8
5 4 3 2 1
1.5 5.0 5.0 2.7 4.9 6.2 6.2 0
2.2K
L601
8
1.2uH
9
CAUTION: DIGITAL TRANSISTOR
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(MAIN PCB)
R645
10
5V REG
Q601
7.6
5.6
5V REG
Q604
5.6 5.6
8.2 15.0
W801 W802
8.8 REG
Q606
R639
KTC3203_Y-AT
100
C647
50V 1 KA
7
R638 10K
R646 27K
3.4 0 0 0 2.9 3.3 2.0 8.8
40 39 38 37 36 35 34 33
3.5
R642 D605
2.6
ACL/ABCL
6.8K 11E1-EIC
0
R IN
5.0
V PULSE OUT
C638_2
16V 33 KA
0
G IN
34 EXT C in
33 8.7V REG OUT
0
FAST BLK
32 X'TAL
7.3 C645_2
SPOT KILLER
NC
0
16V 47 KA
fsc OUT NC
5.0
IC601
5.0
VIDEO CHROMA Vcc
C613
5.6
V RAMP CAP
50V 1 KA
R641
2.5
V RAMP FEEDBACK
22K 1/4W
17 V OUT
0
B IN
16 B OUT
8.2
STRAT UP Vcc
8.2
10
R648
4.5
100 1/4W
9 10 11 12 13 14 15 16
0 4.9 3.5 4.9 4.9 4.0 4.0 4.8
11 12 13
R626
10K
R627 100
R630 100
S808X
R631 100 1/4W
R653
560 1/2W
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
FROM/TO DEFLECTION/CRT
FBT+8V
W838
V_OUT
ABCL
V_FEEDBACK
GND
H_SYNC
B.OUT
G.OUT
R.OUT
CLAMP
TEST POINT
CP601
TKC-M06X-A1
VIDEO 6
INT.MONI 5
IIC_OFF 4
SDA 3
SCL 2
GND 1
0
4.9
SWITCHING
Q608
DTC114ES
0
F G
H
8
7
6
5
4
3
R.SIGNAL
2
G.SIGNAL
B.SIGNAL
DEFLECTION SIGNAL
AUDIO SIGNAL
TUNER VIDEO SIGNAL
PCB010
TMA501
1
H
G-4