E-5
TROUBLESHOOTING GUIDE
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No
Yes
No
Is the voltage DC 5V for
IC601 43th pin or not?
Investigate IC602 3rd pin.
Whether is a luminance
signal early in IC602
42th pin or not?
Investigate IC601.
Yes
No
Whether is a luminance
signal early in IC4001
52th pin or not?
Investigate IC4001.
Yes
Yes
R, G, B signal out from
the 19th pin, the 20th
pin and 21th pin?
Investigate IC601 and a
peripheral circuit.
Investigate a transistor of CRT
PWB.
No