Oki C911 DICOM Instructions d'installation

OKI C911 / 931 / 941

Disassembly & Reassembly Procedures

Distributed at the Oki Data C900 Series Service Classes

Oki Data Training Department REV.1.60

2000 Bishops Gate Blvd.

Mt. Laurel, NJ 08054

This document describes the disassembly of the Oki Data C900 series of

printers. It is to be used during Oki Data Service Training. It is not designed to be a

self-directed course, as Oki Data Trainers will provide additional information as required

during the course. We are not responsible for typographical errors nor or we responsible

for manufacturing changes that are considered part of a products life cycle.

This document is being provided in conjunction with an Oki Data sponsored and

instructor led course. Be aware that the machine you are working with may have

already been disassembled, resulting in parts and / or screws being incorrectly replaced.

You are responsible for your own personal safety as you work through this course. You

are expected to know how to safely operate, disassemble, and repair machines of this

type. Oki Data is providing disassembly, troubleshooting, repair and reassembly

instructions specific to this series of printers. Oki Data assumes that each student has

already demonstrated their knowledge of basic electronics, troubleshooting, disassembly

and reassembly of this type of equipment.

Important Safety Notes:

• This product generates potentially lethal voltages. While Oki Data has made

every attempt to insure safe operation and voltage interruption by installing safety

circuits, it is possible to by-pass these safety circuits. Oki Data will not be

responsible for the safety of any attendee who knowingly by-passes any of these

safety devices.

• The printer units are very heavy. The C911 printer weighs approximately 230

pounds. Safe lifting techniques are required and Oki Data assumes that the

attendee is versed in established safe lifting techniques.

• These printers contain large amounts of metal that may have sharp edges or

burrs on edges. Oki Data assumes no liability for carelessness that results in

injuries to attendees. In short – Be Aware – Be Careful - Don’t Fool Around!

• If you are unsure of something – ask the Oki Data Trainer before continuing.

• Follow the disassembly instructions as they are written to insure your safety as

well as your successful disassembly/reassembly of the printer(s) you’ll be

working with.

1All printer directions refer from front of printer

IMPORTANT: Please keep all screws with the parts they came out of and during reassembly pay

careful attention to installing the correct screw color and size. If you have leftover

screws – please return them to the instructors before the printers are re-packed.

Front

Left Side

Rear

Right Side

Lift the toner cartridge cover to view the

installed toner cartridges.

NOTE: The C911 / C931 each have 4

toner cartridges and drums while the C941

has 5 toner cartridges and drums.

Remove all toner cartridges by lifting the

front edge and slowly pulling it out.

You will see a blue handle on top of the

toner of the toner cartridge when it is

about half way out. Lift and support the

toner cartridge by this handle.

Open the front door to reveal the installed

drums.

Remove the drums by lifting the front edge

and pulling the drum out. As you slowly

pull the drum out, grab the drum as shown

to fully remove and support the drum as

you remove it.

CAUTION: Never grab the drum

assembly around the bottom as your

hands / fingers may touch the surface of

the drum, leaving oil on the drum surface.

NOTE: Never wipe the drum surface

with anything!

Remove waste toner bottle by pulling the

handle on the end of the waste toner

bottle. As you remove the waster toner

bottle, you will see a handle in the middle

of the bottle. Grab and support the waste

toner bottle by this handle to fully remove

it from the printer.

Remove Belt Unit:

On either side of the belt assembly are blue

captive locks. Gently twist these 2 locks

and lower the locking handles.

Grasp the blue handle and move it to the

right to unlock the transfer belt assembly

Grasp both transfer belt handles and gently

pull the transfer belt assembly from the

printer.About 2/3 of the way removed you

will feel resistance – just lift the belt

assembly slightly to clear these “safety

stops.”

After removing the transfer belt assembly,

push the blue handle to the left and close

and re-lock the locking handles, Unlocked

in Step 6.

Failure to re-lock the 2 lock levers prior to

closing the front drum door may break the

lock levers or the front drum door!

CAUTION: Do Not place the image

belt in any position other than horizontal as

you may create a toner spill if you do.

Place the belt on a clean, smooth surface to

protect the transfer belt from

contamination.

CAUTION: Do Not Touch the belt

surface as you will leave fingerprints and

this may cause printed image problems.

Steps 3 through 7 are required to clean and

service the LED Print heads in the printer.

Close the front drum door.

Remove the paper cassette by pulling the

drawer straight out and lifting it slightly.

Remove toner cover door by removing the

4 black screws and gently lifting and pulling

the door away from the printer.

Remove Operator Panel by removing the 2

black screws.

Gently lift the operator panel.

Caution – there are 2 wire harnesses

attached to the rear of the operator panel.

Reassembly Warning:

It is very easy to unplug one of these

connectors when reattaching the operator

panel during reassembly. If the cable(s)

are disconnected, symptoms may be no

display and no initialization when

powered up.

Unplug the 2 wire harnesses from the

operator control panel board.

On the left side, remove the duplexer by

lifting the handle and sliding it out.

Caution: The duplexer on the C900

series is very short, so support it as you

remove it.

Remove the 4 screws (2 on the outside / 2

on the inside) of the cover below the

duplexer.

Remove the plastic cover.

Remove lower left cover which is held in by

2 screws and 4 tabs.

NOTE: Metal plate which was removed

in the previous step is still present in this

picture.

Remove the low voltage power supply

cover, which is secured by 3 screws and 4

tabs.

Gently lift the corner over the main power

switch.

On the rear cover, remove the HDD access

cover w/1 captive screw.

Remove 7 sliver screws from the rear

cover. There is also a tab on the left side of

the printer, near the power switch, that

you must depress to remove the cover.

Release that tab and gently lift the cover

over the lift handle extension on the side

and slide off to remove.

NOTE: Some units may have 1

additional screw in the middle of the back

cover.

There are 2 tabs holding the offset cover in

place, 1 in the rear of the printer and one

at the front of the printer – shown on next

page.

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