No Sound (1.Speaker 2.Monitor_out, 3.Optical)_X12
*Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
Symptom
Video is normal but there is no sound.•
Major
checkpoints
When the speaker connectors 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) ?
No
Input the sound source properly.
Yes
Check the signal at input of Main board?
AV, COMP L/R : RA503
No
Check CN502.
Change the Main Assy.
Yes
1
Check the DATA between the Audio IC’s ?
Pin #15 of IC301 : Bclk
Pin #20 of IC301 : LRclk
Pin #23,#24 of IC301 : I2C_SDA/SCL
No
Check IC301.
Change the Main Assy.
Yes
2
1. Check the Speaker sound data at
CN302
2. Check the Monitor out sound data at
CN303_IBR
3. Does the SODIF OUT sound data
appear at ? OP301
No
Check IC301.
Change the Main Assy.
Yes
Replace speaker ?
No
Please, Contact Tech support.
Caution Make sure to disconnect the power before working on the IP board.
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