Service manual

7-52
CHAPTER 7 TROUBLESHOOTING PROCEDURES
(12) Print Speed is Slow (Low Performance)
(12-1)Print speed decreases up to 2ppm
Environmental temperature of
the location where the printer
is installed
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.
Action at NG
Review the installation
environment
(especially, check to
see if the intake port or
delivery port of the fan
is blocked).
(12-1-1) Environmental temperature
Confirmation Items
(12-2)Print speed decreases
Media Weight specified for
printing
Confirmation Tasks
Check to see if a wrong Media Weight is specified.
Action at NG
Correct the Media
Weight.
(12-1-2) Setting of Media Weight
Confirmation Items
(13) Option unit is not recognized
(13-1)Duplex unit is not recognized
Duplex unit
Connections from PU PCB
(PRX PCB) to duplex PCB
(V7Y PCB).
Square connector connecting
the duplex unit to the printer
Square connector connecting
the duplex unit to the printer
Signal delivered from PU
PCB (PRX PCB) to duplex
(V7Y PCB)
Confirmation Tasks
Check to see if the duplex unit in use conforms to the
AR-C265P
specification
Check to make sure that the cord is properly connected from the
DU connector of the PU PCB (PRX 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 OPTLPN connector of the
PU PCB (PRX PCB).
Pin 6: TXD(PU DUP)
Pin 4: RXD(DUP PU)
Action at NG
Replace the Duplex
unit.
Correct the
connections.
Remove the foreign
matter.
Replace the connector.
Replace the PU PCB
(PRX PCB).
(13-1-2) Check of connections
(13-1-1) Duplex PCB
(13-1-3) Check of control signal
Confirmation Items