Accessory Fault - Nokia RH-30 Series Troubleshooting Instructions

Accessory Fault

ICQ: 343183001 QQ: 35070846 Email: Serviceic@yahoo.com.cn
Start
Is accessory detected
when connected to
system connector?
Yes
End
Figure 16: Accessory troubleshooting
Check system
connector X101
No
(solder ings, contact
plates). Is it OK?
Yes
Measure ACI-line
(pin3).
Is it ~0.83...1.13V?
Yes
Measure VOUT
voltage (pin4).
Is it ~2.8V?
Yes
Retest
Measure ACI-line
(pin3).
Is it ~0V?
Yes
Measure VOUT
voltage (pin4).
Is it ~0V?
Yes
Retest
Repair solderings or check contact
No
plates if dirty. Retest.
Check ACI- line (L106,R103,R102,R109,C103).
No
If not OK, change defect part and retest.
Check VOUT-line (N100, L107, R103, C101,
C102, C112).
No
If not OK, change defect part and retest.
Non-ACI Accessory
Check ACI- line (L106,R103,R102,R109,C103).
No
If not OK, change defect part and retest.
Check that regulator N100 enable-pin is
No
If not OK, check ACI-line again
ACI-Accessory
LOW-state.