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5. Trouble Shooting Charts
1. NO RASTER
CASE
: Chattering sound of Relay(Y801, Y802) & LED on/off.
Chattering sound of Relay(Y801, Y802) & High voltage on/off &
LED on/off.
Check voltage of C893(330uF) is 290Vdc at AV 220V ---> OK
Check voltage of DS802 is 5.5Vdc ---> OK
Check secondary voltage(T801)(132V, 16V, 7.5V, 22V) ---> NG
Check voltage at 9th pin of I801(normal status : 8V)
Chattering case : 9th pin of I801 is 6V ---> Q801 is destructed.
High voltage on/off case : 9th pin of I801 is 6V~3V °Ê I802 is dead or R817 is
CASE
: No booting sound(ex:Sounds of Relay, High Voltage and Beep)
& LED on/off.
No booting sound & LED off
Check voltage of CS803 is 290Vdc at AV220V ---> OK
Check voltage of C893 is 290Vdc at AV220V ---> NG
Secondary voltage(T801) ---> NG
LED on/off case:check R833, Y801, Q806 among others there is destructed
LED off case: stand-by 5V line to micom is abnormal.
CASE
: No booting sound & LED off & destruct of IS801
Check voltage of CS803 is 290Vdc at AV220V ---> OK
Check voltage of C893 is 290Vdc at AV220V ---> NG
Secondary voltage(T801) ---> NG
Check/Replace IS801 & TS801
9th pin of I801 is 6V~0V ---> D807 is destructed.
destructed.
13
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