Incorrect Uhf Frequency - Nokia 2255 Manual
Rm-97, rf description and troubleshooting
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Also See for 2255:
- User manual (54 pages) ,
- Baseband description and troubleshooting (44 pages) ,
- Disassembly/assembly (14 pages)
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Nokia Customer Care
Incorrect UHF Frequency
Following are possible causes for incorrect UHF frequencies:
• Power supplies to PLL N7000 missing or low (VR7)
• Loop filter components missing or incorrectly installed
• Matching components to N7000 TxLO/PLL input missing or incorrectly installed
• 19.2MHz reference clock missing or low
• Programming is incorrect
• Component failure (VCO or PLL portion of N7000)
ISSUE 1 10/2005
©2005 Nokia Corporation
RF Description and Troubleshooting
Company Confidential
2255 (RM-97)
Page 41
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Troubleshooting
