Common Problems; No Communication During Flash; No Communication During Alignment - Nokia 6235 Baseband Description And Troubleshooting

6235/6235i/6236i (RM-60)
Baseband Description and Troubleshooting
Battery Bar Scroll

Common Problems

The following section has a list of common problems, along with some standard checks.

No Communication During Flash

• Make sure good connection between flash adaptor and phone
• Phone has to be powered by prommer (FPS-8)
• Check Baseband regulators VR3, VIO, VCORE, VFLASH1
• Phone will not able to flash without 19.2Mhz clock into UPP
• Check BSI, MBUS, FBUSRx, FBUSTx, PURX, SLEEPX for bad solder joints between
UEM and UPP
• Check Flash bus signal and VPP voltage level

No Communication During Alignment

• Check all connection between test fixture, cables and phone
• Make sure phone is in Local Mode check BSI signal level if not
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UEME
F2000
V2000
Figure 48: Charging Checks
©2005 Nokia Corporation
Company Confidential Issue 1 04/2005