Philips BTM2360/ALL Service-Handbuch - Seite 20

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10.Trouble Shooting

A：NO POWER OUTPUT

Check EC33 is with 310V direct

voltage or not

YES

Check switching tube OP2 is

with 310V voltage or not.

YES

Check the fifth feet of IC3 is

with around 14V or not.

YES

D10 5.2V,D21~D23 20.5V regular

voltage

B: NO DISPLAY

Check IC7 is with 3.3V voltage

output or not

YES

Check Y1（32.768KHZ）if start

oscillation or not

YES

Check R44,R46,R47 LED display

drive signal CLK,DATE,STB is

normal or not

YES

Display is OK

Check F1,LF2,LF1,U12

Check R159，T1

Check R162，D20,T1,IC5

Check D10 L34 is with 5.2V

voltage or not

YES

Check D10，IC3，IC5

Check Y1,C17,C23,U4,Q3 etc.

components

Check U1,CON4 and U2 on

display board，CON3，FFC

cabel