Nokia RH-6 Series Baseband Description & Troubleshooting page 67

CCS Technical Documentation
Touchpad module - Touchpad
Touchpad faults
Is the touchpad
working?
Yes
End
Touchpad module - EL
Is the EL working?
Yes
End
Issue 1 10/2003
Company Confidential
Change TP Module.
No Is the touchpad
working now?
No
Check X305 (solder
joints). Is it OK?
Yes
Measue Voltage of X+, X-.
Y+ and Y-.
VX+ & VX- = ~2.8V
VY+ & VY- = ~ 0 V
Yes
Continue to trouble
shooting process for
Touchpad Controller (N306)
Change TPM. Is the
No
EL working now?
No
Check X305 (solder
joints). Is it OK?
Yes
Measure Voltage of VEL,
and ELEN (X305/17 & 18).
VEL & VELEN = ~2.8V
Yes
Retest
© 2003 Nokia Corporation.
6 - BB Description & Troubleshooting
Retest failing
Yes
TP Module
No Change X305
Check N306, L320, L321,
L322, L323, R330, C330,
C331, C332, and C333.
If not OK, change defect
Retest failing
Yes
TP Module
No Change X305
Check
VFLASH2
from UEM
No
(C204). If not
OK, change
UEM
RH-6
part
Page 67