Uhf Frequency Is Incorrect - Nokia RM-11 Series Troubleshooting Manual

RM-11
Troubleshooting - RF

UHF Frequency is Incorrect

Possible causes:
• Power supplies to PLL IC (N507) is missing or low.
• Loop filter components missing or incorrectly installed.
• 19.2MHz reference clock missing or low.
• Programming is incorrect.
• Component failure (VCO or PLL IC).
© 2005 Nokia Corporation
Page 36
CC Technical Documentation
Confidential Issue 2 09/2005