Konica Minolta AFR-12 General, Mechanical/Electrical page 73

Symptom Step No.
The document is
caught by the
Original Width
Scale.
The document has
slipped between
the Original Glass
and Original Width
Scale.
The document
gets caught
behind the
Transport Belt (2-
sided mode).
The document has
stopped near the
Exit Sensor (S4).
The document has
stopped near the
Turnover/Exit
Sensor (PWB-D).
(AFR-12)
AFR-12/AF-5
Mis-feed at the ADF Transport Section
Check Item
1 Does the document used
meet the specifications for
reliable feeding?
2
When the Original Width
Scale is pushed and
released by hand, does it
return to the correct position
by the force of the spring?
3 Carry out the unit test for the
Scale Solenoid (SOL3) to
check whether it functions
properly.
4 After start of transport, does
the voltage across CN4-2 of
PWB-A and GND change
from "H" to "L"?
5 Is the Transport Belt
deformed, worn or dirty?
1 Carry out the unit test for S4
to check whether it functions
properly.
2 Does the voltage across
CN4-5 on PWB-A and GND
change from 5 VDC to 0
VDC when S4 is blocked
with a piece of paper?
3 Is the Exit Roller deformed,
worn or dirty?
1 Carry out the unit test for
PWB-D to check whether it
functions properly.
2 Does the voltage across
CN11-6 on PWB-A and
GND change from "H" to "L"
when PWB-D is blocked
with a piece of paper?
3 Is the Turnover/Exit Roller
deformed, worn or dirty?
Result
NO Instruct the user to use
documents that meet the
specifications for reliable
feeding.
NO Check the mount position of
the spring at the bottom of the
Original Width
Scale. Replace the spring.
YES Go to step 5.
YES Replace SOL3.
NO Replace PWB-A.
YES Clean or replace it.
YES Go to step 3.
YES Replace PWB-A.
NO Replace S4.
YES Clean or replace it.
YES Go to step 3.
YES Replace PWB-A.
NO Replace PWB-D.
YES Clean.
T-6
Action
Rev. 1.0/05.99