No Video (1.Speaker 2.Headphone_out, 3.Optical)
*Refer to the next page to check the lacation such a CN201 or IC1001 SVC Manual mentioned.
Symptom
Video is normal, but there is no sound.
•
Major
checkpoints
When the speaker connects are disconnected or damaged.
•
When the sound processing part of the Main board is not Functioning.
•
Speaker defect.
•
Diagnostics
Check the source and check the
connection of sound cable (Comp,
SCART, HDMI) ?
No
Input the sound source properly.
Yes
Check the signal at input of Main board?
No
Check CN501, CN502, CN601,2,3.
Change the Main Board.
Yes
1
Check the DATA between the Audio IC’s ?
Pin #4 of IC301 : LR_clk
Pin #3 of IC301 : I2S_DATA
No
Check IC301.
Change the Main Board.
Yes
2
1. Check the Speaker sound data at
CN301
2. Check the Monitor out sound data at
CN302
3. Does the SDIF OUT sound data
appear at ? OP301
No
Check IC301.
Change the Main Board.
Yes
Replace speaker ?
No
Please, Contact Tech support.
Caution
Make sure to disconnect the power before working on the Power board.
4-17
4. Troubleshooting