Mita DP-2800 Service Manual page 144

5A2
E3
Connect ckt tester to pin 3
of KP-564/YC3.
Turn power off, then on.
Is pin 3 low?
Yes
Connect ckt tester to pin 10
of KP-564/YC3.
Turn power off, then on.
Is pin 10 low?
Yes
Connect ckt tester to pin 45
of KP-544/YC2.
Turn power off, then on.
Is pin 10 low?
Yes
Replace KP-544.
6-26
No
Connect ckt tester to
pin 45 of KP-544/U2.
Is pin 3 low?
Replace KP-564.
Is pin low for
approx. 900 µs?
No
Replace S2108 cable.
No
Replace KP-564.
Turn power off, then on.
No
Replace KP-544.
Yes
Replace scanner unit.
Replace KP-570.
No
End
E3?
Yes
No
E3?
End
Yes