Nokia 7600 - Nokia 7600 imaging phone - Overview; Camera and multimedia messages

NMM-3 Company Confidential
6-Troubleshooting CCS Technical Documentation
Page 6-18 Copyright  2003 Nokia Corporation Issue 1 (11/2003)
Company Confidential
HELGO Troubleshooting
Y
es
Y
es
Check with RF FET Probe:
V
CO Output signal
3589.6Mhz CH37 (GSM900)
3495.6MHZ CH700 (GSM1800)
Level>-10dBm
OK?
No
No
Y
es
Check with scope/multimeter
TXI/TXQ Signals
V
R2,VR3,VR4,VR5,=2.8V
V
R1A=4.8V
V
REF01=1.35V
HELGA serial interface
TXP & TXC signals
OK?
Y
es
Check modulator output
components
OK?
Replace Helgo
Replace faulty
components
No
Phoenix Settings:
Band=GSM900
Active Unit=Tx
Op Mode=Burst
Tx Chan=37
PA Mode=Free
Pwr Lvl=19
Synthesizer
Troubleshooting
Baseband
Troubleshooting
HELGO