Oki C5650 - Page 199

Oki Data CONFIDENTIAL
43827101TH Rev.2 199 /
Feed motor
Feed motor driver
Feed motor drive cord
Feed motor drive cord
Feed motor
Feed solenoid
Feed solenoid
Feed solenoid cord
Feed solenoid cord
(3-2-4) Check of connections
(3-2-3) Check of operating state of motors
Confirmation Items
Confirmation Tasks
Conduct the Motor and Clutch Test of the self-diagnostic mode,
and check to see if the feed motor operates normally.
Unplug the HOP connector of the PU PCB, and confirm the
following on the connector side:
Several Mohms between pin 1 and FG
Several Mohms between pin 2 and FG
Several Mohms between pin 3 and FG
Several Mohms between pin 4 and FG
Check the connected state of the cord.
Check for incomplete connection or skew insertion, and check
the cord visually to see if it has any assembling problem.
Check to make sure that the cord is not caught under any
assembled part of the printer. Unplug the HOP connector of the
PU PCB, and confirm the following on the cord side:
Short-circuiting between pin 1 and FG
Short-circuiting between pin 2 and FG
Short-circuiting between pin 3 and FG
Short-circuiting between pin 4 and FG
Remove the PU PCB and the HOP connector to check whether
there is an approximately 3.4
Ω or 5 Ω resistance between pins
1 and 2, and pins 3 and 4.
Conduct the Motor and Clutch Test of the self-diagnostic mode,
and check to see if the feed solenoid operates normally.
Make this checking with the right side plate detached, so that
the solenoid is visible.
Check to see if there is anything that interferes with the moving
part of the solenoid (cord, etc.).
Check the connected state of the cord.
Check for any incomplete connection or skew insertion, and
check the cord visually if it has any assembling problem.
Check to make sure that the cord is not caught under any
assembled part of the printer.
Unplug the HSOL connector of the PU PCB, and confirm the
following on the cord side:
Short-circuiting between pin 1 and FG
Unplug the HSOL connector, and check to see if there is a
resistance of approximately 89
Ω between pin 1 and pin 2.
Action at NG
Replace the PU PCB or
feed motor.
Replace the PU PCB.
Redo the connection
properly.
Replace the cord with a
normal one.
Replace the cord, and
correct the assembling
to make it normal.
Replace the feed
motor.
Replace the PU PCB
or feed solenoid.
Correct the assembling
of the printer to make it
normal.
Correct the connection
properly.
Replace the cord with
a normal one.
Replace the solenoid
Assy, and redo the
reassembling properly.
(3-2-5) Check of operating state of solenoid
(3-2-6) Check of connections