Lexmark X502N Operating and safety instructions

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Manual to replace the CPU-fanof the Lexmark x502n

Attention: This manualrefers exclusively to the altered fandistributed by

ProCompSys! Standard-models of this fan can not be operated withthe Lexmark

x502n in this manner!

Note: Arbitrary modification on your device may void the manufacturer's

warranty! In either case disconnect the device from power before opening!

Voltage can remaininelectronic components of a device, even if power is

disconnected. If needed, consult an expert.

Turn device off

and remove any

cables from the rear side.

Remove the screw fixing the side

panel

from the rear side.

Remove the side

panelbysliding it

to the rear side of thedevice.

Remove the screw fixing the inner metal

side-panel.

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Remove the metal-side-panel by

sliding it to the rear side of the

device.

Remove the defective fan's plug

from the jack on the circuit board.

The fan is fixed with 4 screws.

First, remove the

upper

right

and

lower-left screws of the fan. The fan

can alreadybe fullyremoved at this

point.

Two spacers remain attached to the

circuit board. Unscrew the two other

spacers from the defective fanand

attach them to the new fan, just as

diagonally arranged.

Attach the new fan back to the two

spacers that remained on the

circuit boardusing the two

remainingscrews.

Due to variation inproduction on behalf

of Lexmark, it is not possible to equip

the replacement-fan witha plug fitting

all lots of this printer model. In particular

cases it might be necessary to make

some little adjustments.

Given the case that plug and jack do not

fit without further ado, you have to...

(continued on next page)

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either a

) cut off the existing plug

from the defective fanand connect/

solder it to the replacement-fan

(pay attention to the polarity:

rednew àblackold,

blacknew àyellowold,

yellownew àredold!)

or b) file offthe replacement-fans's

pluguntilit fits into the jack

oder c) which appears to be the

most feasible solution remove the

plastc jack from the printer's circuit

board, so the plug's dimensions

don't interfere with the jack's

housing anymore.

If a modification is necessary in

your case, solution No. c) is

depicted below.

If plug and jack do fit without

further ado in your case, you

can skip the following instruct-

tions of this manual, that are

highlighted on a yellow back-

ground.

The white plastic jack is glued to the

circuit boardand can be loosened quite

easily usingp. ex.a pairof long-nosed

pliers.

As soon as the glued connection is

loosened, pull off the white jack-housing

straightforward from the three pin

contacts using slightly circular

movement.

Pay extreme attention to having

powered off the printer and avoid

contact of the used tool with the

circuit board's components!

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10.

The replacement

fan's plugcan

now easily be connected to the

contact pins on the circuitboard.

Pay attention to the correct polarity

(red wire to the left)!

("Red wire to the left " also

applies if you did not have to

remove the white plastic jack

from the circuit-board!)

The color-sequence of the

cables of the replacement-fan

does not necessarily have to

coincide with the color-

sequence of the cables of the

defective original fan!

11.

Tentatively connect the printer to

power and switch it on, to check

the new fan's function.

The display-message 'Warning:

CPU Fan is Locked' should be gone

now.

If necessary, check the plug's snug

fit.

12.

attach t

he side

panels according to

steps 5, 4, 3 and 2.

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