Nokia RM-11 Series - UHF Frequency Is Incorrect

RM-11
Troubleshooting - RF CC Technical Documentation
Page 36 ©2005 Nokia Corporation Confidential Issue 2 09/2005
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).