Charging Problems; Usb/Vbus Charging Problems - Sony Ericsson W995 Troubleshooting Manual

Charging Problems

START
Step 1:
Perform Charging Test
If NOT successful go to Step 2.
Step 2:
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
Is MP 103
(X2201_Pin 2)
connected to
MP 104 (TP2202)
Yes
Is MP 104 (TP2202)
Short circuit to GND
No
5 Volt DC at
MP 102 (C2440)
No
Is MP 102 (C2440)
Short circuit to
GND
No
Disconnect:
VBATT and DCIO/SEPI
Are
Replace
No R2490 and R2449
R2490 or R2449
= Max 1 Ohm
TROUBLESHOOTING
Replace
No
X2201
SL 4 Replace
V2200
Yes
SL 5 Replace
N2000
SL 4 Replace
V2202
Yes
SL 5 Replace
N2000
SL 4 Replace
C2440 or V2202
Yes
SL 5 Replace
C2441 or N2000
Replace
Yes
X2405
Charging Problems

- USB/VBUS Charging Problems

USB/VBUS Charging Problems
Use Phone with the Signalling SW (SSW)
Use the TRS Fixture and connect: VBATT
Connect: USB Cable from the PC to the Phone
Replace
Yes
N2421
SEMC Troubleshooting Manual
START
SL 5 Replace
5V – 5.2V DC at
Yes N2000
MP 32 (R2444)
SL 4 Escalate
No
Is
MP 92 (X2405_Pin 1) Replace
Yes
Short Circuit to GND C2439 or N2421
No
5V – 5.2V DC at Replace
No
MP 92 (X2405_Pin 1) X2405
Yes
Disconnect:
VBATT and USB Cable
Is R2451 Replace
No
= Max 1 Ohm R2451
1230-1858 rev. 1
W995
20 (125)