Ericsson R320s Working Instruction page 26

3.4 Consumes 15-30mA
Open the phone and check for liquid damage.
Try to program the phone in the flash programmer.
If programming the phone is impossible measure the resistance over R648 and R649 (0 ohm).
If the resistance is incorrect, replace R648.
If it is correct, replace V607.
If the fault still remains send the unit on according to the local company directives.
Hint. Check the soldering on N762, resold if necessary. If that does not help, replace N762.
3.5 Consumes less than 15 mA
3.5.1 Consumes no current
Open the phone and check for liquid damage.
Make sure that W100 is not dirty, damaged or incorrectly soldered.
Replace the dome foil.
Power up the board.
Measure the VBATT voltage at C400 (3.70 V), at the side close to C401.
If the VBATT voltage is incorrect, replace W100.
If the VBATT voltage is correct, measure the voltage at pin 2 of V610 (3.70 V).
If the voltage is correct, replace V610.
If the voltage is incorrect, send the unit on according to the local company directives
If the fault remains, send the unit on according to the local company directives.
4/00021-2/FEA 209 544/21 B
Trouble Shooting Guide, Standard
10(26)