4 Troubleshooting
4-6
GH15H*
CONFIDENTIAL
4 Troubleshooting
4-6 Microphones Don’t Work
No
Does the PC’s sound
program operate well?
Check the PC’s sound program
and compatibility.
Yes
OK
No
Does the External
Microphone work?
Check the CN803 jack.
Yes
No
Is the connection between the
PC and monitor secure?
Connect the cable between the
PC and monitor.
Yes
OK
No
Can you hear any sound from
the Headphones?
Check CN802 on the Audio PCB
and related circuit D805, D806,
R811, and R812.
Yes
No
Is the Internal Microphone
connector attached?
Check the connection between
CN808 on the Audio PCB and the
Internal Microphone.
Yes
No
Does the Internal
Microphone work?
Check Q801 and related circuits.
Yes
4-7 Headphones Don’t Work
Summary of Contents for GH15H series
Page 11: ...CONFIDENTIAL Memo 3 Disassembly and Reassembly 3 4 GH15H ...
Page 14: ...CONFIDENTIAL 4 Troubleshooting GH15H 4 3 1 5 6 7 2 3 4 WAVEFORMS ...
Page 18: ...CONFIDENTIAL GH15H 5 1 5 Exploded View and Parts List ...
Page 19: ...5 Exploded View Parts List 5 2 GH15H Memo CONFIDENTIAL ...
Page 31: ...Memo 6 Electrical Parts List 6 12 GH15H CONFIDENTIAL ...
Page 32: ...CONFIDENTIAL GH15H 7 1 7 Block Diagram ...
Page 33: ...CONFIDENTIAL 7 Block Diagrams 7 2 GH15H Memo ...
Page 34: ...CONFIDENTIAL 8 Wiring Diagram GH15H 8 1 8 Wiring Diagram ...
Page 35: ...Memo 8 Wiring Diagram 8 2 GH15H CONFIDENTIAL ...
Page 37: ...CONFIDENTIAL 9 2 GH15H 1 5 6 7 2 3 4 9 Schematic Diagrams ...
Page 39: ...CONFIDENTIAL 9 Schematic Diagrams 9 4 GH15H Memo ...
