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This chapter provides procedures for removal and replacement of field replacement components. For other components not shown in this chapter, the diagrams in the
attached with this manual will help locate the compon ent.
For replacement of a component, use the reverse of the removal procedures explained in this
chapter.
Before proceeding, make sure printer power is switched off and the power cord is un-plugged
from the printer. See
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Warning
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SULQWHU1
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Screws and hardware used in the printer are listed in the beginning section of the Parts catalog.
Symbol numbers also given in the list for these screws are referred to in the disassembling
instructions in the following page s.
below.
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Parts Catalog
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,Q#FDVH#WKH#VHOIWDSSHG#WKUHDG#LV#GDPDJHG/#WKH#DIIHFWHG#SDUW#PXVW#EH#
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For cleaning,
see page 5-7.
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Page 4
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815 'LVDVVHPEO\=#0DLQ#XQLW#SULQWHU
In order to remove the drum unit, the toner con-tainer, developer un it, and the paper feed unit
must be removed beforehand.
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UHPRYHG#LQ#WKH#EHJLQQLQJ1
Use the reverse of removal procedures when replacing the component back in the printer.
Observe whatever note provided to give critical handlings.
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SRZHU#VXSSO\1
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VFDQQHU/#HWF1,1#3URYLGH#DQ#DQWLVWDWLF#+GLVFKDUJLQJ,#GHYLFH/#VXFK#DV#D#
ZULVW#VWUDS/#WKDW#FDQ#HIIHFWLYHO\#GLVFKDUJH#\RXU#ERG\#EHIRUH#WRXFKLQJ#
ERDUGV/#ODVHU#VFDQQHU/#HWF1
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Open the top cover. The toner container must be removed first: Pull the toner con-tainer release
lever as below. Pull the toner container slowly up. To avoid toner ad-hering from spilling, keep
it as level as possible.
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5HOHDVH#OHYHU
After removing the toner container, remove the developer’s connector from the printer. Then,
while pressing the dev eloper release lever towards the fr ont of t he printer , r emove t he deve loper
unit.
5-4
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Page 5
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1RWH $IWHU#UHPRYLQJ#WKH#GHYHORSHU/#VHDO#LW#LQ#WKH#SURWHFWLYH#EDJ#DQG#SODFH#LW#
RQ#D#IODW#VXU0IDFH1#'R#QRW#SODFH#WKH#GHYHORSHU#LQ#D#GXVW\#DUHD1#,I#\RX#
VKLS#WKH#GHYHORSHU/#SDFN#LW#LQ#WKH#VKLSSLQJ#FRQWDLQHU#VSHFLILFDOO\#VXS0
SOLHG#ZLWK#WKH#SULQWHU1#6HH#6KLSSLQJ#WKH#GH0YHORSHU#XQLW#RQ#SDJH#80;1#
$OVR#GR#QRW#WRXFK#WKH#GHYHORSLQJ#UROOHU#RI#WKH#GH YHORSHU1#'R#QRW#SODFH#
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If the developer unit is shipped (the developer must be shipped separately if the printer is
shipped), it must be fit in the shipping container supplied originally wi th the printer.
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First, flap the magnet roller protective cover down. Put the d evelop er un it in the plastic bag supplied with the shipping container. Put the dev e loper unit into the shipping container.
5-5
Page 6
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Use a developer unit DV-25 for replacement. Produce the developer unit from the protective
bag.
Flap the magnet roller protective cover up.
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Install the developer using the reverse mann er of remov ing the dev eloper expl ained above. Connect the developer connector.
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The paper feed unit can be removed from the printer without using tools. First, be sure to
remove the paper cassette entirely out. Otherwise, the paper feed unit will not come out.
To remove the paper feed unit, first remove the paper cassette out. While holding and pushing
the locking tabs at both sides of the paper feed unit, draw the pap e r feed unit all the way out.
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1. The protective cover is not provided with the developer unit that is originally supplied with the printer.
5-6
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Page 7
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Before removing the transfer roller, remove the paper feed unit out of the printer.
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WKH#SULQW#TXDOLW\#+ZKLWH#VSRWV/#HWF1,1
Remove the transfer roller cover. Facing front the paper feed unit, move it to left.
The transfer roller is held in place by two axle holders that hold the roller axle at both ends.
Hold and pull the gear at the right end of the roller up, then remove the left end.
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To clean the transfer roller, hold it by its gear so that the roller hangs down horizon-tally. Use a
vacuum cleaner, moving nozzle along the roller, but do not let the nozzle directly touch on the
roller. Thoroughly clean the entire surface of the roller.
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Carefully clean the left side (facing the front of the paper feed unit) axle end before replacing
the transfer roller. This end of the axle is directly applied with the high voltage transfer bias.
5-7
Page 8
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Before removing the registration rollers, remove the paper feed unit out of the printer. To
remove the paper feed unit, see page 5-6,
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Remove the registration rollers cover. The cover is locked by two catches that lock it onto the
paper feed unit. These catches can be accessed through the holes on the cover. Insert a screw
driver as shown below and release the locks.
.
5-8
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Page 9
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Remove the coil springs that are used to secure and press the top (metal) registra-tion roller
towards the bottom (rubber) registration roller underneath.
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DQG#GUDZ#RXW#WKH#SDSHU#IHHG#XQLW#KDOI#ZD\1#'R#QRW#DWWHPSW#WR#IRUFLEO\#
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RQWR#KDUG#REMHFWV1
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To replace the drum unit into the printer, be sure to align the guides and rails on the drum unit
with each other. Do not force to slide the drum unit in unless they are properly aligned with each
other.
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Pull the main charger until it stops. While pushing the (white) locking peg in-wards the printer,
pull the main charger unit all the way out.
The main charger unit is explained on page 3-5,
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in chapter 3.
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Page 11
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Open the toner container access door. Remove two screws ➊. While holding the spring-loaded
back side cover to open, pull the back plane of the top cover away from the printer, then pull it
upwards to remove.
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The left and right side covers are snapped onto the chassis by catches and holes. No screws are
used. To remove the left and right side covers, release those catches and holes at the front and
the rear from each other, by inserting a small flat blade screw driver between the cover and the
chassis. Then, free the catches at the bottom by lowering the top side of the cover downwards.
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5-11
Page 12
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Remove the two screws ➊ at the front side. Detach the catches at the left and rig ht bottom of the
cover as marked by circles below. To disengage these catches, proceed to the next step.
Remove the ground wire ➊ and the connector ➋ below. Disengage the catches at the left and
right (shown) bottom of the cover.
5-12
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Page 13
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Remove the right side cover first (page 5-11,
Then, remove the connector.
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). Remove the four screws ➊.
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Remove the right side cover first (page 5-11,
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Remove the connectors ➋ to ➐. Remove the drive assembly.
). Remove the five screws ➊.
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5-13
Page 14
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Remove the left and right covers (page 5-11,
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5HPRYLQJ#FRYHUV
).
Detach all connectors from the fuser unit first. Remove the four screws ➊. Pull out the fuser unit
from the printer.
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QLQJ1#$OORZ#VXEVWDQWLDO#SHULRG#RI#WLPH#XQWLO#LW#FRROV#GRZQ1#$OVR/#WKH#
KHDWHU#LV#IUDJLOH=#+DQGOH#LW#ZLWK#JUHDW#FDUH1
Remove the two screws ➊. Remove the cover from the fuser unit.
5-14
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Page 15
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Remove the four screws ➊ and remove the fuser top cover. Remove the heater lamp.
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RXWHU#VXUIDFH#FDQ#SUHYHQW#SURSHU#IXVLQJ#RI#WRQHU#RQ#SDSHU1
To install a new heater lamp, be sure that the lamp terminal (end) ➋ is properly hitched by the
fuser terminal ➊.
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Remove the four screws to remove the cover. When lifting the cover, hold the heat roller so as
not to drop the roller.
To remove the heat (metal) roller, first remove “plate fuser up” by using a small flat-blade
screwdriver as shown below.
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Page 17
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To replace the heat roller, align the positioning keys on both collars so that they face the paper
input side (the drum unit side) [horizontally].
Then insert the heat roller retainer back in place.
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Before removing the controller box, several parts must be removed first. Refer to the following
pages and refer to the section titled as follows.
page 5-4,
•
page 5-9,
•
page 5-11,
•
page 5-11,
•
page 5-12,
•
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5-17
Page 18
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Remove the four screws ➊ below. This also disengages the connectors.
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Connectors
Remove the high-voltage bo ard at the left side o f the printer. To do this, remove the fo ur screws
. Disengage the connectors.
➊
Connecto
5-18
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Page 19
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Remove the three screws ➊ at the left side of the printer. Disengage the connectors.
Connectors
Hold the upper frame and lift to remove.
On the controller box, remove the six screws ➊ on top and the one screw ➋ at the rear side.
Remove the cover.
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5-19
Page 20
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Remove the screw ➊ to remove the face-down pulley assembly.
Face-down pulley assembly
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Page 21
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This section describes ins truct ions on how to di sa ssemble the option paper feeder PF-26 for the
FS-6900 printer. Before proceeding;
Disconnect power from the printer
•
Remove the printer (and the duplexer if installed).
•
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Remove the paper cassette from the option paper feeder. Then remove the paper feed roller by
unlatching it at both ends.
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Remove the six screws ➊ on the top cover.
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Page 22
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To remove the motor assembly, remove the two screws ➊ atop that secure the motor bracket
and the one screw ➋ at the bottom.
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The following picture shows the motor assembly and the gears mounted on the motor bracket.
5-22
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