XOCECO LC22K9, Руководство по обслуживанию

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2 0
3. No sound (with TV input as an example)
No
Yes has
No No
has
No
has
No
No
4. Examples of normal trouble fixing for LC-22K9
1. Indication lamp no light: R2, false soldering, X2, joint soldering, R2,R3,LED1 no good.
2. No power supply: F2, adapter no good.
3. No grating: V8 false soldering, or no good;P29,line of X1 no good.
4. No picture: X3, adapter no good.:
5. Abnormal background color cast: P4, no good
6. Vertical or (horizontal) line interfere: Screen, no good
7. Sound no good: line of FB20,P6 or speaker, no good.
8. Earphone no good: C275 copper foil broken
9. Remote control no good: X2 joint soldering: line of R2, X2 no good.
10. Function of push key abnormal: line of X1 no good.
Check if R282
burns.
Check if TP2 is
tri-angle wave.
Change N207
Check the output
wave form of foot 5
and 8 of N203
Check the output wave
form foot 27,and 28
of N201
Check the output wave
form of foot 67 of N201
Check the output wave
form of foot 11 of N201
Check the soldering
problem of N207
Change N203
Change N201
Change TUNER201