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TROUBLE SHOOTING GUIDE
1. NO POWER
NO POWER
CHECK C910 DC VOLTAGE? DC=MORE THAN 150V YES
NO
TROUBLE IN F901, R901, AND R910, D901 OPEN/SHORT
CHECK T901 PIN 3?
NO
CHECK IC901 PIN 6 ?
20V
NO
TROUBLE IN IC901, IC902, IC952, Q901, R917, R920, AND R921
YES YES TROUBLE IN Q901, R917, R920, AND R921
CHECK SMPS 2nd DC VOLTAGE ?
NO OUTPUT VOLTAGE
CHECK Q501, 2nd DC VOLTAGE LINE ?
NO
TROUBLE IN Q501, 2nd DC VOLTAGE LINE
6.3V/ 12V/ 12.5V 14V/ 72V YES
CHECK IC952 PIN 7 VOLTAGE (5V)?
NO
TROUBLE IN IC952
YES
TROUBLE IN OTHER PRIMARY CIRCUIT
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