Phone Is Jammed - Nokia RH-30 Series Troubleshooting Instructions

Phone is jammed

ICQ: 343183001 QQ: 35070846 Email: Serviceic@yahoo.com.cn
Phone is jammed
Measure VIO, VCORE,
VFLASH1, VANA,
VR3 voltages.
Are they OK ?
Yes
Measure 32kHz
SleepClk from testpoint J404.
Is it OK ?
Yes
Measure 26MHz
RFClk from R420.
Is it OK ?
Yes
Measure PURX signal
from testpoint J402.
Is it HIGH (~1.8V) ?
Yes
Phone is
jammed
2
Figure 5: Jammed phone troubleshooting (1)
Check VBATT1-6
VIO,VCORE,VFLASH1,VANA,
No
VR3 lines.
Are they OK ?
Measure 32kHz
SleepClkfrom B200.
No
Is it OK ?
Measure 26MHz
RFCLK from G501.
No
Is it OK ?
No
No
BSI/BTEMP lines and
Check BSI/BTEMP
Yes lines. If OK, change
Check B200,C209,
No
Yes
No
If OK change G501
Check R420, C420.
Yes
If OK change N500
Check L260-265,
C260-265,
VBATT lines
UEM
C210
Change UEM
Check G501,
R520,C540.
Change UEM