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26
2. NO CHARACTER
NO CHARACTER
NO
NO
NO
NO
TROUBLE IN
CDT SOCKET
TROUBLE IN
P301, SIGNAL CABLE,
PC SIGNAL
TROUBLE IN
IC302, P301
TROUBLE IN
IC303
TROUBLE IN
IC304
YES
YES
YES
YES
- 20 -
CHECK
IC302 PIN 5,6,7
CHECK
IC302 PIN 1, 24, 23, 19, 20, 21
PIN 18 (5V) ?
CHECK
IC303 PIN 1, 2, 3
PIN8 (8V),
PIN 4 (80V) ?
CHECK
R, G, B CATHODE
VOLTAGE?
IC302, #5, 6, 7
IC302, #23 IC302, #19, 20, 21
IC302, #1 IC302, #24
CDT, RK, GK, BK
Waveforms
2827
30
31
26 27 28
29 30 31
29