General Power Checking Troubleshooting - Nokia RM-849 Service Manual

General power checking troubleshooting

General power
checking trouble
shooting
Measure
VPH _ PWR > = 3 . 5 V
C 1201
YES
Measure
VSW _ S 1 ( VREG _ S 1 ) = 1 . 1 V
C 1438 . 1
YES
Measure
VSW _ S 2 ( VREG _ S 2 ) = 1 . 1 V
C 1437 . 1
YES
Measure
VSW _ S 3 ( VREG _ S 3 ) = 1 . 8 V
C 1436 . 1
YES
Measure
VREG _ L 10 = 3 V C 1422 . 1 ;
VREG _ L 3 = 1 . 2 V C 1416 . 1 ;
VREG _ L 7 = 2 . 6 V C 1432 . 1 ;
VREG _ L 8 = 2 . 85 V C 1420 . 1
YES
Go to Clocking
troubleshooting
Page 3-16
Is Voltage at
C 120 3
No Yes
= BATTERY
VOLTAGE
NO
Is Voltage at
No
L 1404 . 1 = 1 . 1 V
Yes
Is Voltage at
L 1403 . 1 = 1 . 1 V
Yes
Is Voltage at
L 140 2 . 1 = 1 . 8 V
Yes
COMPANY CONFIDENTIAL
Copyright © 2012 Nokia. All rights reserved.
BB Troubleshooting and Manual Tuning Guide
CHECK IF R 1411
SOLDER WELL
Checking BATTERY
AND CONECTOR
J 3901
No
No
No
No
RM-849; (Nokia Lumia 610)
CHANGE PWB
Issue 1