Service manual

7-53
CHAPTER 7 TROUBLESHOOTING PROCEDURES
(13-2)2nd Tray unit is not recognized
2nd tray unit
Connections from PU PCB
(PRX PCB) to 2nd tray PCB
(V7Y PCB)
Correct the connections.
Square connector connecting
the 2nd tray unit to the printer
Signal delivered from PU
PCB (PRX PCB) to 2nd tray
PCB (V7Y PCB)
Confirmation Tasks
Check to see if the 2nd tray unit in use conforms to the
AR-C265P specification
Check to make sure that the cord is properly connected from
the 2nd connector of the PU PCB (PRX PCB) to the 2nd tray
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 2nd connector of the PU
PCB (PRX PCB).
Pin 5: TXD(PUfi2nd)
Pin 3: RXD(2ndfiPU)
Action at NG
Replace the 2nd tray
unit.
Correct the
connections.
Remove the foreign
matter.
Replace the connector.
Replace the PU PCB
(PRX PCB).
(13-2-2) Check of connections
(13-2-1) 2nd tray PCB
(13-2-3) Check of control signal
Confirmation Items
(14) LED head is not recognized(Error 131,132,133,134)
(14-1)Service Call 131-134(LED HEAD Missing)
Connected state between CU
PCB connector and head
connector
Head FFC
Check of Fuse conduction
on CU board
Confirmation Tasks
Check visually the connected state of the FFC.
Unplug the FFC of the head, and check for any wire breakage or
peel-off of the covering along the cord.
Check voltage is 5V between capacitor CCP1
(See section "Check of Fuses", page 7-67)
Action at NG
Redo the connection
properly.
Replace the head FFC
or CU PCB.
Replace
F504 or CU PCB.
(14-1-1) Check of connections
Confirmation Items