Problems During Flash And Alignment; No Communication - Flash; No Communication - Alignment; Failed Self Test/Calibration - Nokia 6275 Baseband Description And Troubleshooting

Nokia Customer Care

Problems During Flash and Alignment

The following topics discuss potential problems that can occur during Flash and
Alignment.

No Communication - Flash

Ensure a good connection between the flash adaptor and mobile terminal.
• You must power the mobile terminal by a prommer (e.g., FPS-8).
• Check the baseband regulators: VR3, VIO, VCORE, VFLASH1.
• You must have 19.2Mhz clock into the D2800 in order to flash the mobile
terminal.
• Check the BSI, MBUS, FBUSRx, FBUSTx, PURX, SLEEPX for bad solder joints
between the UEM and the D2800.
• Check the flash bus signal and VPP voltage level.

No Communication - Alignment

• Check all connections between the test fixture, cables, and the mobile terminal.
• Make sure the mobile terminal is in Local Mode, and check the VBAT voltage and
current levels. If not in Local Mode, check the BSI signal level.
• Make sure mobile terminal was programmed/Flashed.

Failed Self Test/Calibration

• Make sure the mobile terminal is in Local Mode.
• Make sure power supply provides enough current (~500mA and 2A for tuning).
• Use the troubleshooting guide's troubleshooting flow chart to verify the failed
circuit.
• Check the signals and voltage levels.
Issue 1 - September 2006
Baseband Description and Troubleshooting
Company Confidential
6275/6275i (RM-154)
Page 41