Print Speed Is Slow. (Performance Is Low.); Print Speed Decreases; Duplex Unit Cannot Be Recognized - Oki C911 Maintenance Manual

Oki Data CONFIDENTIAL

4.5.2.(14) Print speed is slow. (Performance is low.)

(14-1)

Print speed decreases.

Check item
(14-1-1) Media Weight setting
Media Weight that Check if the wrong Media Weight has been
is specified for the specified or not.
print
Adjust the media Readjust the media weight sensor when auto
weight sensor is set for media weight.
(14-1-2) Narrow width paper speed setting
Narrow paper Check if the narrow paper speed is setting
「Slow」(Default) and paper width is 216mm
speed setting and
Paper width or less.
(14-1-3) High-humidity control setting
High-humidity Check if the High-humidity control is setting
「Mode1」 or 「Mode2」.
control setting
(14-1-4) Print Mode setting
Check if the Print Mode is setting 「Slow」
Print Mode setting
and Power supply (Default) and Power supply voltage is
voltage decrease.
(14-1-5) Spot color setting
Spot color toner Check if the spot color toner is using Clear
toner.
45530603TH Rev.2
Actions to be taken
Check work
at NG
Correct the
Media Weight.
Adjust the
media weight
sensor. (Section
5.3.2.8)
・Hopping the
paper Long
edge feed.
・Setting the
narrow paper
speed is 「Normal」
Setting 「Off」
(Default)
・Check the
connection of
power supply
・Setting the
Print Mode is
「Normal」
Print speed
is down when
using clear
toner.

4.5.2.(15) Duplex unit cannot be recognized.

(15-1) Duplex unit cannot be recognized.
Check item
(15-1-1) Duplex PCB
Duplex PCB Fuse Measure the resistance of Duplex PCB F502
fuse.
PU/CU PCB Fuse Measure the resistance of PU/CU PCB F1
fuse.
(15-1-2) Check the system connection
Check the system Check that the cable between the PU/CU
connection from PCB DUP connector to the Duplex PCB is
the PU/CU PCB to normally connected.
the Duplex PCB.
Square connector Check if any foreign material exists in the
connecting the connecting portion of the square connector.
Duplex unit to the
printer.
Square connector Is the terminals of the square connector
connecting the damaged?
Duplex unit to the
printer.
4. TROUBLESHOOTING PROCEDURE
Actions to be taken
Check work
at NG
Check the
PU/CU PCB
connection
cable. If the
cable is normal,
replace the
Duplex PCB.
Check the
Option
Tray PCB
connection
cable. If the
cable is normal,
replace the PU/
CU PCB.
Correct the
connections.
Remove
the foreign
material.
Replace the
connector.
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