Repair Actions For Manual Test Failures - Sony Ericsson K790 Troubleshooting Manual

2 Repair Actions for Manual Test Failures

Failure
2.1 Power On /
Off
2.2 Software Flash
2.3 Charging
2.4 Charging indicator (RED LED)
2.5 Hands-Free connection (PHF)
2.6 SIM
2.7 Display
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Failure Symptom
Current draw greater than 300 mAmps
Current draw when powered off
Hangs at gray display. Constant
vibration. Will not power off.
Draws current when pushing power key,
returns to zero
Powers on by itself after installing
battery. Will not power off.
No response when pushing power key
(no current change)
Other symptoms
USB icon does not flash
Error message "USB device not
recognized"
USB icon flashes
Progress indicator appears with red X
No response from computer or phone
Measure V2201 with positive lead on
the Anode.
VDC should equal 0.15 to 0.19.
Other symptoms
Charging from power outlet
Charging from computer via USB
Measure V2201 with positive lead on
the Anode.
VDC should equal 0.15 to 0.19.
Trouble Shooting Guide, Electrical
Repair Action
•
N2000
•
K790 ONLY – N1100
•
K800 ONLY –
•
A1200 – Approved Centers Only
•
K790 ONLY – N1100
•
•
K800 ONLY –
•
A1200 – Approved Centers Only
•
B2100
•
D2301
•
N2200
•
Replace S2500 if damaged
•
V2504
•
Replace S2500 if damaged
•
Replace X2200 if damaged
•
N2000, D2301
•
N2300, D2304
•
D2301
•
V2301
•
If VDC is outside of range, then
replace V2201
•
V2220
•
D2301, D2304
•
V2202
•
N2000
•
If VDC is outside of range, then
replace V2201
•
V2220
•
V3110
•
N4202
•
N2000
•
Replace X2302 if damaged
•
N2000
•
Replace X3102 if damaged
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