Test Current Consumptions; Test Charging - Sony Ericsson K800 Electrical Repair Manual

Test current consumptions

3.8 Volt limiter 3A
Connect the Dummy Battery (3.8 Volt, limiter 3A)
Measure the current in off mode, less than 1mA. If more, it could be Marlin A1300 or A1200
fault.
Insert a live SIM and power up the phone.
Measure the deep sleep current max 6mA typical between 0-3mA.
If the phone uses more than 6mA, make a master reset. Make sure that the operator is running
with deep sleep. (This operation can be switched off by operator if the network is busy).
Insert a test SIM and power up the phone to a network tester.
Measure the current in idle mode max 6mA typical between 0-3mA.
Measure the Transmitter current 900 MHz power level 5. Max 400mA (RMS) 1800mA (peak)
Measure the Transmitter current 1800 and 1900 MHz power level 0. Max 300mA (RMS)
1500mA (peak)
Measure the Transmitter current WCDMA at 23dBm output power. Max 900mA (RMS) 3000mA
(peak).
If the phone uses more the fault could be fixed by running SERP calibrating or the fault is in the
Marlin A1300, Ray A1200 or Vincenne N2000.
If Using fault trace Sw and ITP loaded in the phone the current consumptions are as followed.
Transmitter current 900 MHz at power level 5. Typical 300mA (RMS)
Transmitter current 1800 and 1900 MHz at power level 0. Typical 250mA (RMS)
Current in WCDMA mode at max power level 23 dBm and Rx on.Typical 750mA (RMS)
If the current consumptions are equal to the sheet then go to charging test.
TROUBLESHOOTER Test Current Consumptions - Test Charging
Current at 20sek. after chargers plug
I has been inserted ( 20 % tolerance )
Dummy battery (Volt)
Chargers plug 5.3 Volt.Current mA
LCD show charging X % to 100%
indicator
LCD show
O

Test Charging

3.0 3.1 3.2 3.3 3.4
250 250 600 700 800
0 0 0
Nothing
5,3V 800mA
o O
o
Chargers plug
The power supplier at 3.8 Volt must allow reverse current.
If the charging current is not equal to the sheet go to Charging problems.
If the charging current is equal to the sheet then insert the normal battery and test the
charging current to define if the battery is working properly.
Measure the voltage at the battery to define the current level.
If the battery is receiving the right current, then the phone and the battery are working
properly.
SEMC Electrical Repair Manual
K800 - K810
3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
800 800 800 800 800 800 800 0
10 10 20 60 80 90 90
Fully
charged
1202-3085 rev. 2 58 (121)