User Guide

RH-26
7 - Troubleshooting Instructions CCS Technical Documentation
Page 34 ©Nokia Corporation Issue 1 02/04
Charging
Charging is controlled by UEMK D200 and software. Two charger connectors are used:
one in the system connector soldered to the PWB and one spring contact to DC-jack in
the B-cover assy.
If charging does not work, check:
• DC-jack X102 spring contacts and system connector X101 solderings.
• BTemp resistor R105. Typical voltage at +25°C is 0.9V.
• Charging circuitry external components; fuse F100, coil L100 and protection
diode V100.
• If these are OK, UEM circuitry is faulty. The circuitry consists of UEMK D200 itself
and series resistor R200.
Figure 15: Charging circuitry components.
Pop-Port
TM
system connector
System connector X101 has the following interfaces:
• Pads for 2 -wire charging in cradles.
• 2-wire fully differential mono audio output.
• 2-wire differential microphone input.
• 2.78V 70 mA output to accessories.