ASUS T500 MB Service Manual
26
19. Fail to identify earphone/Handset MIC failure
Solution:
1
Replace the earphone socket and test again the earphone function
2
Check if the earphone socket has soldering deviation, high floating or is damaged
3
Check if the related components of earphone are obviously poorly soldered or the earphone socket is
damaged
4
Measure CDC_HS_DET voltage before and after the earphone cable is inserted; voltage before: 1.8V/ voltage
after: 0V
5
Replace the earphone socket and test again
6
Add soldering or re-solder or replace CPU
WIFI/FM/GPS IC U3302
earphone socket
