Konica Minolta AFR-12 General, Mechanical/Electrical page 70

Symptom Step No.
The document is
not taken up at all.
Rev. 1.0/05.99
Mis-feed at the ADF Take-Up Section
Check Item
1 Does the document used
meet the specifications for
reliable feeding?
2 Has the capacity of the
Document Feed Table been
exceeded?
3 Are any of the Document
Take-Up Rollers, Document
Separator Rollers and
Document Separator Pads
deformed, worn or dirty with
paper dust?
Carry out the unit test for the
4
Document Pressure
Solenoid (SOL2) to check
whether it functions
properly.
5 Does the voltage across
CN9-2 on PWB-A and GND
change from 24 VDC when
the Start key is pressed?
6 Carry out the unit test for the
Document Stopper Solenoid
(SOL1) to check whether it
functions properly.
7 Does the voltage across
CN12-3 on PWB-A and
GND change from 24 VDC
to 0 VDC
instantaneously and then
return to 24 VDC when the
Start key is pressed?
Carry out the unit test for the
8
Document Feed Motor
Pulse Sensor (M1CLK) to
check whether it functions
properly.
9 Does the voltage across
CN5-3 on PWB-A and GND
change to "H" when M1CLK
is blocked and change to "L"
when M1CLK is unblocked,
when the pulse disk is
turned by hand?
10 Carry out the unit test for the
Take-Up Motor (M1) to
check whether it functions
properly.
11 Does the voltage across
CN6-1 on PWB-A and GND
change from 24 VDC when
the Start key is pressed?
T-3
Result Action
NO Instruct the user to use
documents that meet the
specifications for reliable
feeding.
YES Instruct the user not to exceed
the capacity.
YES Clean or replace them.
YES Carry out step 6.
YES Replace SOL2.
NO Replace PWB-A.
YES Carry out step 8.
YES Replace SOL1.
NO Replace PWB-A.
YES Carry out step 10.
YES Replace PWB-A.
NO Replace.
YES Check each gear for damage.
YES Replace M1.
NO Replace PWB-A.
AFR-12/AF-5