Nokia 3390, 3390b, 3395 服务手册

NPB-1NB

Baseband Troubleshooting

PAMS Technical Documentation

3DJH



1RNLD0RELOH3KRQHV/WG

,VVXH)HE

Nothing happens when a

charger is connected to the

phone

The voltage at R210 towards

R209 > 0,4V

Check F200, L202, R209, R210

Replace CCONT (N201)

No

Yes

Yes

"Not charging" message

appears in the display

The voltage at R220 towards

C236 (BSI, N201) = 0,8V when a

charger is connected.

Check X203, R221, R222

The voltage at R220 towards

C236 (BTEMP, N201) = 0,5V

when a charger is connected.

No

Yes

Yes

Check X203, R221, R222

No

When the battery is an NI

battery, then the voltage at R208

towards R200 must be app. Vb-

200 mV. When the battery is a LI

battery, the voltage at R208

towards R200 must be Vb

Yes

Check R200, R208, V205, N200

No

The voltage at R208 towards

R200 and CHAPS (N200) rises

slowly when a charger is

connected.

Check N200

J201 performs as follows :

0 -> Vmax-200mV

PWM high ("1", 2,8V)

Vmax-200mV -> Vmax

PWM = 1 Hz

PWM = 1 Hz

Yes

Yes

No

Check N200

No

Check PCB

Yes