24
C) OUTPUT
CURRENT
ABNORMALITY:
FAIL
PASS
D) ENBALE
ABNORMALITY:
FAIL
PASS
E) DIMMING CONTROL ABNORMALITY:
FAIL
PASS
CHECK PWM FREQUNCY AT C6
CHIP
THE OSCILLATOR FREQUNCY
RANGE = 150 ~ 250 KHZ
TO CHANGE C6 CHIP OR IC
CHIP
FUNCTION TEST OK!
IF ENABLE ABNORMALITY
1. TO CHECK IC PIN 9 TURN ON HAVE
12 VOLTAGES
TO CHANGE ON Q1
& Q2
FUNCTION TEST OK!
IF DIMMING ABNORMALITY TO
CHECK R1/R2/R33/C6 IS FAILD?
TO CHANGE ON
R1/R2/R33/C6R203
FUNCTION TEST OK!
Содержание AL707
Страница 1: ...SERVICE MANUAL 17 LCD Monitor AL707 ACER ...
Страница 27: ...26 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY ...
Страница 47: ...4 Part No CBPC782KKZAE1 ...
Страница 48: ...5 Part No 79L L17 3 S ...
Страница 49: ...6 Part No KEPC782KA6 ...
Страница 50: ...7 ...