RM-11
Troubleshooting - RF CC Technical Documentation
Page 38 ©2005 Nokia Corporation Confidential Issue 2 09/2005
Rx VHF Layout
Incorrect Rx VHF Frequency
Possible causes:
• Power supplies to PLL portion of N701 IC missing or low (VR7)
• Loop filter or resonator components missing or incorrectly installed
• 19.2MHz reference clock missing or low (C512)
• Programming is incorrect
• Component failure (PLL IC)
Lock voltage probing point
DC voltage between 1 and 2 V
CDMA IF
filter
R F probing point:
256.2MH z @ -2.5 dBm
N701 IC with
integrated PLL
To Next Page
Loading...
