Acer SPECTRUM AL801 Service Manual page 25

C) OUTPUT CURRENT ABNORMALITY:
CHECK PWM FREQUNCY AT C6
CHIP
THE OSCILLATOR FREQUNCY
RANGE = 150 ~ 250 KHZ
D) ENBALE ABNORMALITY:
IF ENABLE ABNORMALITY
1. TO CHECK IC PIN 9 TURN ON HAVE
12 VOLTAGES
E) DIMMING CONTROL ABNORMALITY:
IF DIMMING ABNORMALITY TO
CHECK R1/R2/R33/C6 IS FAILD?
PASS
FAIL
PASS
PASS
24
FAIL
TO CHANGE C6 CHIP OR IC
CHIP
FUNCTION TEST OK!
TO CHANGE ON Q1
& Q2
FUNCTION TEST OK!
FAIL
TO CHANGE ON
R1/R2/R33/C6R203
FUNCTION TEST OK!