Fm Radio Phoenix Interface - Nokia 2255 Baseband Description And Troubleshooting

2255 (RM-97)
Baseband Description and Troubleshooting
• If the audio signal is correct (with 800mv DC-offset), then check the UEMC for
shorts, voids, and misalignments
• If the UEMC and FM Radio Chip are correct, check the UHJ and headset
VANA (2.8V)
VAFR
FM Radio chip (always
the check solder)
VIO (1.8)
FM Radio chip
FMANT
GND

FM Radio Phoenix Interface

Checks for the FM radio that can be perform with Phoenix include:
• Verify the FM radio is working by connecting headset to UHJ
• Turn on the FM radio
• Set frequency and volume
Page 16
Figure 13: FM Radio Chip and Antenna
©2005 Nokia Corporation
FMANT
Sleep CLk
FM mono
Company Confidential ISSUE 1 10/2005