KPOWERSCIENCE KP3828 Series, Maintenance Manual

Page: 195 / 230

8-23
Transport Failure at the Paper Feed Section
[02 No fanfold paper]
(If the “No Fanfold Paper” error occurs when the power is turned on.)
Procedure Points to be checked Remedy Checking method
1 Is the fanfold paper
supplied from between
the paper empty sensor
(PES) guide and the
printer body? If YES, go to 2.
If NO, supply the
fanfold paper from
between the PES
guide and the
printer body.
2 Is the PES normal? If YES, go to 3.
If NO, replace PES
after checking the
harness.
Bring the positive lead of a digital
multimeter in contact with pin 5 of
CN8 of the KMPU board and the
negative lead in contact with SG (pin
6), and measure the voltage.
Block the light emitting window of the
PES guide and measure the voltage. If
the voltage is approximately 0.62 V,
PES is normal in the ON condition.
Let light be incident upon the light
emitting window of the PES guide and
measure the voltage. If the voltage is
approximately 0.63 V, PES is normal in
the OFF condition. (The voltage
measured when the light emitting
window of the PES guide is not
blocked should be a little bit higher
than the voltage measured when said
window is blocked.)
3 Replace the KMPU
board.