Nokia 6255 Description And Troubleshooting page 36

6255/6255i6256/6256i (RM-19)
Baseband Description and Troubleshooting
Charging
Charging through Pop-port is accomplished in the same manner as through the charger
connector. Pin 1 of the Pop-port is physically connected to the charger connector. When
the mobile terminal is connected to a desktop charger (e.g., DCV-15), it charges in the
same manner as it does with the charger connector.
Figure 23 shows the actual charging sequence. The channels on the diagram are:
• CH1 = Charging current across the .22 Ohm (R200) resistor on UEMEK
• CH2 = Charger voltage measure at V100
• CH3 = Battery voltage measure at R200
• CH4 = PURX
In Channel 4, PURX is released, which this indicates when the mobile terminal operation
goes from RESET mode to POWER_ON mode.
Page 36
Figure 23: Charging sequence
©2005 Nokia Corporation
Nokia Customer Care
Company Confidential Issue 2 05/2005