K800 - K810
1202-3085 rev. 2
TROUBLESHOOTER
TROU
B
L
E
S
H
O
OTE
R
Test the joystick Switch S2504 and the diodes V2503,
V2506, V2507, V2508 and V2509.
Place the phone as picture Joystick up, system connector at right.
Remove the keyboard.
Connect the black probe onto
MP 22
or pin 7 (frame) at joystick.
Connect red probe onto
MP 1 to MP 82
.
Joystick
10
4
82
47
1
MP
No action
1.8-OL
1.8-OL
1.8-OL
1.8-OL
1.8-OL
Volt
A Right
1.8-OL
0.0-0.6
0.6
0.6
1.8-OL
Volt
B Down
1.8-OL
0.0-0.6
0.6
1.8-OL
0.6
Volt
C Left
0.6
0.0-0.6
1.8-OL
1.8-OL
0.6
Volt
D Up
0.6
0.0-0.6
1.8-OL
0.6
1.8-OL
Volt
Center push
1.8-OL
0.0-0.6
1.8-OL
1.8-OL
1.8-OL
Volt
V2509 V2503
V2508
V2506
V2507
Diode
Go to
Test the joystick Switch S2504
if the measurements are
not
equal to the reference sheet
Go to
Test the diode V2500
if the measurements are equal to the reference sheet
Test the joystick Switch S2504
Connect the black probe onto pin 7 (frame) at joystick.
Connect the Red probe onto pin 1-6 at joystick.
If the measurement are equal to the reference sheet,
the joystick is working properly.
Joystick
4
6
2
1
3
Pin
No action
1.8-OL
1.8-OL
1.8-OL
1.8-OL
1.8-OL
Volt
A Right
1.8-OL
0.0
0.0
0.0
1.8-OL
Volt
B Down
1.8-OL
0.0
0.0
1.8-OL
0.0
Volt
C Left
0.0
0.0
1.8-OL
1.8-OL
0.0
Volt
D Up
0.0
0.0
1.8-OL
0.0
1.8-OL
Volt
Center push
1.8-OL
0.0
1.8-OL
1.8-OL
1.8-OL
Volt
Repair action if both joystick and diode test and joystick test is failed then replace the joystick switch
S2504.
Repair action if joystick and diode test is failed and joystick test is passed.
SL5: compare the column in the sheet and replace the diode.
SL4: scrap the phone.
Test the Joystick Switch S2504 and Diodes V2503, V2506-09
SEMC Electrical Repair Manual
60
(121)
Содержание K800
Страница 122: ...www s manuals com ...