User Guide

NSB-5

Troubleshooting Instructions PAMS Technical Documentation

Page 10 Nokia Mobile Phones Ltd. Issue 1 03/01

Figure 4: Fault Finding for Flash Programming Errors (Cont’d)

External RAM fault?

ID problem?

MCU FLASH Vpp

Error

Unknown fault.

Try phone totally dead.

Check pins of SRAM (D302)

Check control lines of SRAM: RAMselX ...

Yes

Check type of FLASH

Check soldering of FLASH

(Both FLASHES)

Yes

Check Vpp: X201 pin 10

to R303 (end towards

D301). Check Vpp_GND

from X201 pin 7 to R303

(other end). Check D100

Yes

Flashing from X201?

Check R302 and R303 in

both ends.

Voltage higher than

1.7V during flashing?

YesNo

Defect FLASH or flashing-

SW has wrong version.

Yes

Defective MAD

MCUGENIO03 or flashing-

SW has wrong version.