Oki C5500 Maintenance Manual page 198

Confirmation Items
(5-2-4) Check of connections
Feed motor drive cord, ID
motor drive cord, belt motor,
ID-up motor drive cord, fuser
drive cord
Feed motor drive cord, ID
motor drive cord, belt motor,
ID-up motor drive cord
Feed motor, belt motor, ID up-
motor
43085101TH Rev.1
Confirmation Tasks
Check the connected states of the cords.
Check for any incomplete connection or skew insertion of the
HOP connector, DCID connector, DCHEAT connector,
BELTIDUP connector and RELAY connector of the PU PCB
(PRX PCB). Check for any incomplete connection or skew
insertion, and examine the cords visually to see if they have any
assembling problem.
Check to make sure that none of the cords is caught under any
assembled part of the printer.
Unplug the HOP connector of the PU PCB (PRX 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
Unplug the BELTIDUP connector of the PU PCB (PRX 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
Short-circuiting between pin 5 and FG
Short-circuiting between pin 6 and FG
Short-circuiting between pin 7 and FG
Short-circuiting between pin 8 and FG
Unplug the connectors of the respective PCBs, and confirm that
there are the following resistances between the pins of the cord
side:
HOP connector of PU PCB (PRX PCB)
Between pin 1 and pin 2: Approx. 3.5 ‰
Between pin 3 and pin 4: Approx. 3.5 ‰
BELTIDUP connector of PU PCB (PRX PCB)
Between pin 1 and pin 2: Approx. 6 ‰
Between pin 3 and pin 4: Approx. 6 ‰
Between pin 5 and pin 6: Approx. 3.5 ‰
Between pin 7 and pin 8: Approx. 3.5 ‰
Oki Data CONFIDENTIAL
Action at NG
Correct 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, ID motor, or belt
motor.
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