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NO PICTURE
CHECK THE WAVE FORM OF
I501 #44
C
CONTRAST
CHECK
BRIGHT
CONTROL
(MAX)
VOLTAGES
#39:7.5V
Q501
#31:6.2V
ABL
D
ENA
DATA
CLK
I701
41
42
CHECK
CHECK THE
CRYSTAL
VOLTAGE
X701
AT Q101
COMPOSITE
VIDEO INPUT
H
C217
R554
SUB-BRIGHT
CHECK
C410
AGC
4
16
7
15
U001 TUNER
14
9
8
10
5V
IF
Q101
PRE-AMP
SF01
SAW FILTER
CHECK
IF AGC
VTG.
5V
DC
OK
NG
21
I501
LA 7674
42
39
31
11 14
CHECK
9V LINES
#11,14
C410
0.1 (M)
PIN 4
12V
V
(33V)
T
ADJUST
RF-AGC
R555
DETECTOR
OUTPUT
10
8
9
I501
44
LA7674
2
11
14
CHECK
9V LINE
#11, 14
12
C
GO TO
D
GO TO
H
Q506
Y-OUT
VIDEO
DRIVE
CHECK
190V
LINE
H. BLANKING
3
D404
T402
FBT
10
7
R402
CHECK
HEATER
VTG 6.3Vrms
TO Q504
H
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