Samsung ML-2552W Especificaciones descargar pdf (Pagina 114)

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Samsung Electronics

Troubleshooting

Service Manual

Fault Signs Cause & Check Solution

Ghost & Image

Contamination

• The printed image

is too light or dark,

or partially contami-

nated black.

• Totally contaminat-

edblack.

(Black image print-

ed out)

• The density of print-

outs is too dark and

ghost occurs.

1. The printed image is too light

or dark, or partially contami-

nated black.

(1)Check whether foreign sub-

stance or toner are stuck to

the terminal(point of contact)

of the toner cartridge.

(2)Check whether the terminal

assembly is normal.

2. Totally contaminated black.

(Black image printed out)

(1)Check whether foreign sub-

stances are stuck to the ter-

minal(point of contact) of the

toner cartridge and the state

of assembly.

(Especially check the

charged roller terminal.)

3. The printed image is dark and

ghost occurs.

(1)Check foreign substance

attached to the terminal

(point of contact) of the

toner cartridge and the state

of assembly.

(Especially check the devel-

oping roller terminal.)

1. All of 1, 2, 3 above

(1)Remove toner and foreign sub-

stances adhered to the contact

point of the toner cartridge.

(2)The contact point of the unit

facing that of the toner car-

tridge also must be cleaned.

(3)If the terminal assembly is

unsafe:

• Fully stick the terminal to or

reassemble it after disassem-

bling.

• Disassemble the side plate and

push the terminal to be stuck,

then reassemble it.

2. In case of 2

It is a phenomenon when the

OPC drum of the toner cartridge

is not electrically charged. Clean

the terminals of the charged

roller, then recheck it.

3. In case of 3

It is a phenomenon as the devel-

oping bias voltage of the toner

cartridge. Clean the terminals of

the developing roller, then

recheck it.

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