Minolta Di 620 Manual page 282

C0990
Step
1 Is PC42 fully operational? Make the input
port check using "I/O Check."
2 Is PC50 fully operational? Make the input
port check using "I/O Check."
3 Is PC20 fully operational? Make the input
port check using "I/O Check."
4 Is PC21 fully operational? Make the input
port check using "I/O Check."
C0994
Step
1 Does M28 start turning when 3rd Drawer
Paper Descent Key UN9 is pressed with
the 3rd Drawer slid into the copier?
2 Does the voltage across PJ5F-6 (during
ascent) or -7 (during descent) on PWB-F
and GND change from DC0V to DC24V
when step 1 is performed again?
3 Check PC29 for operation.
Does the voltage across PJ4A-5 on PWB-A
and GND change between DC0V and
DC5V when step 1 is performed once
again?
Check Item
Check Item
Result
NO Check the PC42 actuator for operation
and, if it is okay, change PC42.
NO Check the PC50 actuator for operation
and, if it is okay, change PC50.
NO Check the PC20 actuator for operation
and, if it is okay, change PC20 or PWB-H.
YES Change PWB-A, or PWB-F.
NO Check the PC21 actuator for operation
and, if it is okay, change PC21 or PWB-H.
Result
NO Check for overloads and then check step
3.
YES Check gears for overload and, if they are
okay, change M28 or PWB-H.
NO Change PWB-A or PWB-F.
YES Change PWB-A.
NO Check the PC29 pulse disk and, if it is
okay, change PC29 or PWB-H.
T-67
Action
Action