Savin 4027 Servisní příručka stáhnout pdf (Strana 83)

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1.2 DRUM UNIT

1. Make sure that the drum unit is set in position and the drum stay is

secured with a screw when the main switch is turned on. If the drum unit

is loose, poor contact of the drum connectors may cause electrical noise,

resulting in unexpected malfunctions (RAM data may change in the worst

case).

2. Insert a clean sheet of paper between the drum and the drum charge

roller and also cover the OPC drum with paper when you leave the drum

unit out of the copier more than 30 minutes. Doing so prevents the drum

charge roller from sticking to the drum. If the drum charge roller sticks to

the drum, the chemical component of the drum charge roller affects the

surface of OPC drum.

1.3 DRUM CHARGE ROLLER

1. Do not touch the drum charge roller with bare hands. Oil stains may

cause black bands on copies due to excessive drum charge.

2. Do not adhere toner or setting powder dust to the drum charge roller.

Toner stains or setting power may cause white spots or white bands on

copies due to insufficient drum charge.

3. Prevent the drum charge roller from being exposed to dusty air. Dust on

the drum charge roller may cause white spots on copies due to

insufficient drum charge.

4. Never use alcohol or water to clean the drum charge roller. Alcohol or

water corrode the surface of the drum charge roller. Wipe with a dry cloth

or a Dupont Sontara DY-12 cloth - P/N A1539004.

5. Reduce the drum charge roller cleaning intervals with SP2-901 as

follows for users who mainly make high volume copy runs continuously.

SP2-901 setting Cleaning interval

0 ..................... Every 1000 copies for 10 seconds [default]

1 ..................... Every 500 copies for 10 seconds

2 ..................... Every 200 copies for 10 seconds

3 ..................... Every 100 copies for 10 seconds

6. Plug in the copier power cord even when the copier main switch is turned

off. While the main switch is turned off, the drum heater must be turned

on to keep the temperature around the drum charge roller over 15°C.

This prevents the drum charge efficiency from being low for the first copy

after the power is switched on.

A156/A160/A162 4-2 FSM

CÓPIA NÃO CONTROLADA

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