Led Head Is Not Recognized(Error 131, 132, 133, 134) - Oki C810 Maintenance Manual

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7.5.2.(15) LED head is not recognized(Error 131, 132, 133, 134)

(15-1) Service Call 131-134(LED HEAD Missing)
Confirmation Items
(15-1-1) Check of connections
Connected state Check visually the connected state of the FFC.
between CU PCB
connector and head
connector
Head FFC Unplug the FFC of the head, and check for any
wire breakage or peel-off of the covering along
the cord.
Check of Fuse Check voltage is 5V between capacitor CP7,
conduction on CU CP8. (See 7.6)
board
44072903TH Rev.1
Confirmation Tasks Action at NG
Redo the conn-
ection properly.
Replace the
head FFC or CU
PCB.
Replace R190,
R191(C8600)
F504,
F506(C8800) or
CU PCB
7.5.2.(16) Toner cartridge is not recognized(Error 540, 541, 542, 543)
(16-1) Errors caused by consumables
Confirmation Items
(16-1-1) Installed state of consumables
ID units and toner Are the ID units installed in the right positions?
cartridges Check to see if the lock levers of the toner
cartridges are locked
(16-2) Errors caused by toner sensor
Confirmation Items
(16-2-1) State of toner sensor
Toner sensor Is the toner sensor lens stained with toner?
Toner sensor Use the SWITCH SCAN function of the
diagnostic mode to check to see if the sensor
is normal. Hold a white paper in front of the
sensor, and see if the SCAN state varies.
7. TROUBLESHOOTING PROCEFRURES
Confirmation Tasks Action at NG
Redo the
installation
properly.
Confirmation Tasks Action at NG
Wipe off the
stain.
Replace the
toner sensor
PCB (PRZ
PCB), PU PCB
or the FFC
between PRZ
and PU PCB.
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