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1. NO OPERATION, POWER LED FLASHING
POWER LED FLASHING
POWER SW
TURN OFF
MULTIMETER TEST
Q314, Q504, D505, D151,
D152, D153, D154, D155
CHECK
U501 PIN6
PULSE O/P
POWER SW
TURN OFF
1. DC P/S O/P VOLTAGE SET AT 12V,CURRENT
2. SCOPE SET AT 10V/DIV, 10US/DIV, PROBE
U501
NO
SET
AT
600MA.
C330"+". NEGATIVE CONNECT TO U501 Pin 7.
CONNECT TO Q319-GATE AND U501 Pin 6.
CHECK
U501 PIN 10 VCC
PIN 4 SAWTOOTH
PIN 8 = 5V
FAILURE
U501, Q504
6-2
POSITIVE
CONNECT
TO
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