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I501
I701
MICOM
U101
TUNER
SF101
SAW FILTER
#2
#3
#14
#13
SDA
SCL
#12 #13
#50 #51
X701
4MHz
#21
#26
CVBS
#12
#16
33V
5V
Check
IF AGC voltage
Check
RF AGC voltage
Check
clock/data signal
Check
the crystal
Check
the voltages
Check
the waveform
#21 #59
Check
HVCC(8V)
IF VCC(5V)
I501
T402
FBT
#63
Check
the Hout
Check
RGB signal
Check
ABL current
Check
composite video
Check
200V LINE
Check
heater voltage
Check
FBT B+ (133V)
R403
HEATE
R
VIDEO B+
#43
#44
#45
#26
C517
#61
Check the wave of I501 #21
NG : Go to the figure C
OK : Go to the figure D
C
D
2. NO PICTURE
I901
R
G
B
R/G/B AMP
R
G
B