Nokia 5140 Manuales De Servicio
NPL-4/5
Company confidential
Troubleshooting Instructions
Nokia Customer Care
Page 46
Copyright © 2004 Nokia Corporation. All rights reserved.
Issue 1 05/04
EDGE
Ensure that the GMSK is
OK!
Use Phoenix to select
TX_Data Type: "1" or "0"
TX Power Level: 5
Ch661
Ensure Vbatt=3.9 V
Yes
Oscilloscope
C742
IREF_1800_
1900
Vdc > xx Volt
Check
C702
Mode
Vdc = 2.78 Volt
No
Base Band
BOM1 VPCTRL_1900
R713
Vdc= 0 V
BOM2 VPCTRL_1900
R713
Vdc= 2.7 V
Yes
Spectrum analyzer
Check PA N700
RF-connector
No
Check Power Loop
Pout
= +21 dBm, 1880 MHz
Yes
GSM 1900 TX
OK