Nokia 2600 服务手册

ISSUE 1 09/2004

COMPANY CONFIDENTIAL

RH-59/60

Nokia Customer Care

■

Flash programming do not work

The flash programming can only be done via the pads on the PWB (J396).

In case of Flash failure in FLALI station, problem is most likely related to SMD problems. Pos-
sible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH). Missing or mis-
aligned components.

In flash programming error cases the flash prommer can give some information about a fault.
The fault information messages could be:
- Phone doesn't set FBUS_TX line low

Because of the use of uBGA components it is not possible to verify if there is a short circuit in
control- and address lines of MCU (UPP) and memory (flash).

Figure 2:Flash programming fault

Flash prgram m ing

do not w ork

Error from prom m er:

"Phone doesn't set

FBUS_TX line low"

Yes

Check :

PW B.

Else defective D200*

J409, J410, J411, J412

Voltage level at 1,8VDC

Check :

R108, PW B

Yes

J396, R108

Check connection between

pad 1,2 & 3 on J396

and R108

Try reading M CU ID

w ith Phoenix.

Reading OK?

Try reading Flash ID

w ith Phoenix.

Reading OK?

Check :

Replace D450

Check :

PW B.

Else defictive D400*

Yes

Reflash phone