Are the
waveforms at
pin 2,6,11 of
I901 Normal
?
No data appear
Are the
voltages at pin
15 of I901
normal
?
Are the
waveforms at
pin 35,32,29 of
I901 normal
?
Is
The voltage at
pin 17 ofI901
normal ?
Are the
waveforms at
cathode R/G/B
of CRT
normal
?
Check signal cable,
C901, C931, C961
Check ABL line from PCB
Check D941
I901 is
CRT is defective.
Check video circuit
voltages on
Pin 1,2,3of I904 .
Check 12V lines
Check 75V lines.
Yes
Yes
Yes
Yes
Yes
No
No
No
No No
(2) No Data Appear
