Power Supply For Data Cable; Sleep Clock; Fig 9 Fault Tree, Data Cable - Nokia RH-13 Series Troubleshooting Manual

CCS Technical Documentation

Power supply for data cable

DLR-3 needs power supply for data transfering. SGND will supply 2.8V to DLR-3.
- Start phone to normal mode when checking DLR-3 detection
DLR-3 data cable
doesn't work
Connect DLR-3, check
DLR-3 detection
Fail
Check the
components of
XMIC, HEADINT
and MICB2 lines
Ok
Check bottom
connector
Ok
Change UEM

Sleep Clock

Missing/non-functional sleep clock causes
• Entering sleep mode fails (higher current consumption -> shorter standby time)
• Baseband self tests cannot be run
Issue 1 11/02
Figure 9: Fault tree, data cable.
Check VFlash2
Ok
(~2.8V)
OK
Check SGND voltage from
bottom connector
(2.40-2.90V)
Fail
Check V151,V152,R161,
C164,L158
Ok
ãNokia Corporation
Troubleshooting
Fail
Ok
RH-13
Page 21