Circuit Description; Damaged Rf Feed Contact - Nokia 2366i Antenna Description And Troubleshooting

2366i (RM-155)
Antenna Description and Troubleshooting
4. Remove the antenna. Use a dental pick to lift the retaining latch. Do not cause
damage to the contacts.

Circuit Description

Refer to Figure
through a zero-ohm resistor R7358 to the antenna contact pad on the main PWB. The
RF choke L7303 drains static charges to ground, protecting the preceding circuitry from
electrostatic damage (ESD). If a test cable is inserted into RF connector X7300, a
mechanical switch is opened, disconnecting diplexer Z7302 from the antenna contact
pad.

Damaged RF Feed Contact

The CDMA antenna assembly has a metal spring clip that makes contact with an antenna
contact pad on the main PWB. If the spring clip is damaged such that it does not make
contact with the pad, then replace the CDMA antenna assembly. If the pad is damaged,
replace the main PWB. If the contact does not make good contact with the pad, then the
antenna gain is reduced by -25 dB.
Page 6
Figure 5: Disconnection of the Antenna (1)
Figure 6: Disconnection of the Antenna (2)
7. The output of the diplexer is fed through RF connector X7300 and
Company Confidential
Nokia Customer Care
Issue 2 - February 2007