Chroma - Memorex MT1132A Service Manual

A B
8
FROM TV POWER
UNREG+12V
7
6
W806
FROM/TO SOUND/AV
5
AUDIO_OUT
C642
AUDIO_IN
50V 1 KA
W827
GND
5
R632
220
W817
FROM/TO MICON/TUNER
4
Y_VIDEO
AT+5V
SYNC
TUNER+5V
RESET
AFT
AGC
IF
3
GND
HD
POWER
OSD_B
OSD_BLK
OSD_G
2
VD
OSD_R
I2C_OFF
SDA
SCL
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
A B
G-3
C
CHROMA SCHEMATIC DIAGRAM
7
CF604
8.8
REG
5.5 EFCT4R5MW5
Q603
KTC3203_YT
4.9
R615
CF603
EFCT4R5YS5A
470
NC
3.0 2.2 0 7.9 7.9 0 0
48 47 46 45 44 43 42
R634
R611 10K
10K 2.3
AUDIO OUT
2.4
C604
AUDIO BYPASS
2.2
50V 1 KA
C655_1
EXT AUDIO IN
3.0
0.0068 Y
C623 0.0033 M
FM DIRECT OUT
46 SW REG CONT
2.9
C632 50V 2.2 KA 47 LIMITER IN
VIF VCO F/B
48 IF AGC
R618 10M 1/4W
3.2
49 QIF OUT
VREG Vcc
8.7
VIF APC FILTER
3.2
VIF VIDEO OUT
2.2
VIF GND
0
C621 0.01 Y
0
AFT OUT
1.9
64 VIF IN (1)
C626 0.001 Y
QIF IN
1 VIF IN (2)
C602_1 0.01 F
2.8
R606 10K
RF AGC OUT
4.6
C606
RF AGC FILTER
SAW FILTER
2.9
CF601 50V 0.22 KA
SAF45MFY220ZR
OUTOUT G IN IN
1.5
5 4 3 2 1 1 2 3 4 5 6 7
1.5 4.9 4.9 0 4.9 0 0
C609
0.01 Y
L601_2
8
1.2uH
NOTE: THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
C
D E
(MAIN PCB)
6
REG
REG
Q604
Q605
KTC3203_YT KTC3203_YT
4.9 7.2 7.2 4.9 REG
Q606
5.5
5.5
KTC3203_YT
7.9 11.3
8.5
R639
100
R638 22K
R646 68K
5.7 0 5.6 0 0 2.5 3.2 1.9 8.5
C638_1
41 40 39 38 37 36 35 34 33
50V 4.7 KA
3.3
R642 D605
ACL/ABCL
2.6 22K 11E1-EIC
R IN
0
V PULSE OUT
4.7
G IN
34 EXT C in
0
33 8.7V REG OUT
FAST BLK
32 X'TAL
0 C645
SPOT KILLER NC
16V
7.0
fsc OUT NC
CHROMA IC 2.8
IC601
M61206FP
4.9
C613
VIDEO CHROMA Vcc
4.9
50V 1 YK
V RAMP CAP
4.7
R641_1
V RAMP FEEDBACK
2.8
22K 1/4W
17 V OUT
B IN
16 B OUT
0
STRAT UP Vcc
7.9
10
7.9
V OUT
3.6
W818
8 9 10 11 12 13 14 15 16
0 0 4.9 3.4 3.9 4.9 2.0 2.0 2.0
9
R627 100
R630 100
R631 100
R617 1K
CAUTION: SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D E
F G
C647
50V 1 KA
47 YK
CP601
ARE
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
FROM SOUND/AV
VIDEO_IN
6
5
4
FROM/TO DEFLECTION/CRT
V_OUT
ABCL
V_FEEDBACK
GND
H_OUT
H_SYNC
3
B.OUT
G.OUT
R.OUT
CLAMP
TEST POINT
173979-6
B.OUT 6
INT.MONI 5
IIC_OFF 4
SDA 3
SCL 2
2
GND 1
DEFLECTION SIGNAL
PCB010
AUDIO SIGNAL TMX494
LUMINANCE SIGNAL
TUNER VIDEO SIGNAL
1
R.SIGNAL
G.SIGNAL
B.SIGNAL
H
G-4