Test The Diode V2504 And Switch S2500; Test The Switches S2505 & S2506 - Sony Ericsson K800 Electrical Repair Manual

Test the diode V2504 and switch S2500.

MP 47 MP 44 MP 85
Connect the Black probe onto MP 44 or Ground.
Connect the Red probe onto MP 47 and MP 85
If the measurement are equal to the reference sheet,
The diode V2504 and S2500 is working properly.
85
S2500 47
1.4-OL
No action 1.4-OL
0.0
Pressed 0.6
V2504 S2500
Tolerance up to 20 %
Repair actions if the measurements are not equal to the reference sheet.
Replace V2504 if MP 47 is wrong and MP 85 is right.
Remove S2500 if MP 85 is 0 Volt when S2500 is not pressed.
Replace N2000 if MP 85 is still 0 Volt after S2500 is removed.
Replace S2500 if MP 47 and MP 85 is 1.4 Volt when S2500 is pressed.
TROUBLESHOOTER
MP
Volt
Volt
Test the diode V2504 and Switches S2500, S2505 & S2506
Test the Switch S2505 Game A.
Connect the Black probe onto MP 82.
Connect the Red probe onto MP 83.
1.4-OL Volt
No key pressed
Volt
S2505 pressed 0
If the measurement are equal to the reference sheet,
The switch S2505 is working properly.
Replace S2505 if the measurements are not equal to the reference sheet.
Test the Switch S2506 Game B.
Connect the Black probe onto MP 1.
Connect the Red probe onto MP 2.
1.4-OL Volt
No key pressed
Volt
S2506 pressed 0
If the measurement are equal to the reference sheet,
The switch S2506 is working properly.
Replace S2506 if the measurements are not equal to the reference sheet.
SEMC Electrical Repair Manual
K800 - K810
1202-3085 rev. 2 62 (121)