Service manual

ABC D E F GH
ABC D E F GH
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IC853
TC74HC4053AP
TRIPLE ANALOG MPXER
1
10111213141516
2345678
9
IC851 ET106
DECODER
11011121314
15 16 17 18 19
2
20 21 22 23 24 25 26 27
28
3456789
IC852 ET317
DATA SLICER
110
11 12 13 14 15 16 17 18 19
2
20
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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.
NOTE:
B851
LFP3A-M3R2TA
C863
2216V KANP
R.SIGNAL
G.SIGNAL
B.SIGNAL
L852
10uH
W886
W905
W850
W851
W845
W914
W823
W861
W820
W892
W853
W848
W847
W880
W876
Q852
2SC2412K
GREEN BUFFER
Q853
2SC2412K
SYNC BUFFER
Q851
2SC2412K
BLUE BUFFER
Q861
2SC2412K
BUFFER
Q863
2SC2412K
V.REF
Q862
2SC2412K
BLK
BUFFER
Q855
2SC2412K
RED BUFFER
C854
2206.3V
KA
C856
1006.3V KA
C852
1006.3V KA
C881
3.3
50V
KA
C872
10016V
KA
C873
10016V KA
C874
10016V KA
C894
2216V KA
C857
1006.3V KA
C883
3.350V KA
C882
3.3
50V
KA
R911
150K
R856
1K
R902
39K
R896
39K
R854
22K
R862
150
R853
12K
R910
56K
R889
3.3K
R865
33K
R880
1K
R876
100 1/4W
R904
15K
R903
33K
R900
18K
R860
1K
R897
2.2K
R881
220
R887
10K
R905
12K
R877
100 1/4W
R878
6.8K 1/4W
R882
220
R869
12K
R866
12K
R871
12K
R864
1K
R868
1K
R861
12K
R863
1K
R867
12K
R870
12K
R879
1K
R851 1K
C876
0.022 B
C868
0.022 B
C862
0.1 B
C859
330P CH
C851
0.01 B
C895
0.1 TF
C869
220P CH
C855
0.01 B
C853
0.022 B
C890
15P CH
C888
0.01 B
C887
220P CH
C889
0.1 B
C866
0.01 B
C865
0.1 MMTV
C886
15P CH
C867
0.1 MMTV
C893
10P CH
C861
0.01 B
C885
100PCH
C884
1006.3V KA
L856
10uH
L851
10uH
X851
13875KHz
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
D854
11EQS04N
D855
1SS133
D861
1SS133
D852
1SS133
D863
11EQS04N
D851
1SS133
D856
1SS133
D857
1SS133
D860
1SS133
D858
1SS133
D859
1SS133
RECORD LUMINANCE SIGNAL
PLAYBACK LUMINANCE SIGNAL
RECORD COLOR SIGNAL
PLAYBACK COLOR SIGNAL
IS NON POLAR ONE.
THE ALUMI ELECTROLYTIC CAPACITOR MARKED NP
THE RESISTOR MARKED F IS FUSE RESISTOR.NOTE:
TEXT_SYNC
MONITOR_V
P.CON+9V
AT+5.6V
P.CON+5V_C
P.CON+5V_A
GND
TEXT_B
TEXT_R
TEXT_G
TEXT_Y
GND
SDA
SCL
TEXT_RESET
TUNER_ON/OFF
21_Y
21_R
21_G
21_B
5.0
9.0
I-19
FROM/TO 21PIN I/O
FROM/TO MICON
FROM/TO CHROMA/IF
FROM/TO POWER
FROM/TO CHROMA/IF
PCB010
VMX199
T’TEXT SCHEMATIC DIAGRAM
(SYSCON PCB)
NC
NC
0001.31.31.31.31.3
0001.31.31.31.34.8
0.5
1.8
1.8
4.8
4.4
0
5.1
4.8
3.5
3.5
1.0
2.1
2.1
1.0
1.0
4.8
1.7
2.3
4.8
1X C B A 0X X-COM Y-COM Vcc
GND Vee INH
0Z 1Z 0Y
Z-COM
1Y
2.3
0
0
OSC1
AGND
CSIG
SSIG
TSIG
DVCC
WIND
DGND
SYNC
SCAN-0
0
0
DVCC
DGND
CLK.IN
RSTB
VIDEO
SYNC
TEST5
GREEN
RED
AGND
RGB SET
REF.
FRAG1
FRAG2
0.5
4.8
2.52.2
4.8
4.4
4.8
0.1
4.8
0.3
4.8
1.7
0
0
0
0
0
BIAS
AGND
CREF
AVCC
OSC2
TSTAPLB
TCLK
TADATA
DGND
OSC OUT
0
0
0
0
4.8
TEST1
TEST4
TDATA
TCLK
CSB
MUTE
TEST2
TEST3
WIND
SCL
SDA
BLANK
BLUE
AVCC
0.1
4.5
4.3
4.3
3.6
3.6
4.3
4.8
4.3
4.3
3.9
1.8
2.4
4.8
0.3
4.8
0
4.8
4.3
3.6
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