12) Print Speed Is Slow (Low Performance); Print Speed Is Slow (Low Performance); 13) Option Unit Is Not Recognized; Option Unit Is Not Recognized - Oki C5650 Maintenance Instructions Manual

7.5.2.(12)

Print Speed is Slow (Low Performance)

(12-1)Print speed decreases up to 2ppm

Confirmation Items
(12-1-1) Environmental temperature
Environmental temperature of
the location where the printer
is installed

(12-2)Print speed decreases

Confirmation Items
(12-1-2) Setting of Media Weight
Media Weight specified for
printing
7.5.2.(13)

Option unit is not recognized

(13-1)Duplex unit is not recognized

Confirmation Items
(13-1-1) Duplex PCB
Duplex unit
(13-1-2) Check of connections
Connections from PU PCB to
duplex PCB.
Square connector connecting
the duplex unit to the printer
Square connector connecting
the duplex unit to the printer
(13-1-3) Check of control signal
Signal delivered from PU
PCB to duplex PCB
43827101TH Rev.2
Confirmation Tasks
Check to see if the printer is located in such a small room that
the environmental temperature gets unusually high, or the
cooling effect of the fans cannot be obtained.
Confirmation Tasks
Check to see if a wrong Media Weight is specified.
Confirmation Tasks
Check to see if the duplex unit in use conforms to the
C5650/C6050/C6150 specification (A unit
conforming to the C3200/C5540/C5510/C5450/C5250/C3100/
ML3100/C5200/ML5200/C5100/ ML5100/C5300/ML5300
specification cannot be connected).
Check to make sure that the cord is properly connected from the
DU connector of the PU PCB to the duplex PCB.
Check to see if there is any foreign matter trapped in the
connecting part of the square connector
Check to see if the pins of the square connector are broken.
Check the signal delivered through the OPTION connector of the
PU PCB.
Pin 6: TXD(PU DUP)
Pin 4: RXD(DUP PU)
Oki Data CONFIDENTIAL
Action at NG
Review the installation
environment
(especially, check to
see if the intake port or
delivery port of the fan
is blocked).
Action at NG
Correct the Media
Weight.
Action at NG
Replace the Duplex
unit.
Correct the
connections.
Remove the foreign
matter.
Replace the connector.
Replace the PU PCB.
217 /