Olivetti d-Color MF 4003 Service Manual Download

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d-Color MF4003/MF3303

P THEORY OF OPERATION > 1.

d-Color MF4003/MF3303

P-49

[1]

Machine interior temperature less than 18 °C

[2]

Machine interior temperature 18 °C or more

[3]

Absolute humidity, specified value or more

[4]

Absolute humidity, less than the specified value

[5]

Warm-up at low temperatures

[6]

Warm-up under high humidity condition

[7]

Warm-up at ordinary temperatures

(d) Temperature control during pre-standby

• After the warm-up completion temperature is reached, control is then passed onto the pre-standby process.
• The temperature control in the pre-standby state turns ON or OFF the fusing heater lamp as necessary in order to maintain the fusing

belt temperature at a level that enables printing.

• A print job, when received during the pre-standby state, can be started without waiting.

(e) Temperature control during stand-by

• If no print request is received after the temperature control in the pre-standby state is started, control is passed onto the standby

process.

• The temperature control in the standby state maintains the fusing belt temperature at a level lower than the temperature that enables

printing.

• The control is intended to shorten time it takes the temperature to reach the printable level when a print request is received.
• An overshoot preventive process may be performed before control is passed onto the temperature control in the standby state.
• After standby starts, the fusing motor rotates (low speed) and stops after 5 seconds.

The rotation time of the fusing motor after standby starts can be changed with EngineDipSW.

(f) Temperature control during the print cycle

Temperature control

• The machine enters a print state as it receives a print control and carries out a print cycle at a set temperature corresponding to the

type of paper selected for the job.

• The fusing temperature is measured during the print cycle and temperature control suitable for the print condition is performed

accordingly.

Service Mode

• The machine has a fusing temperature adjustment function in order to prevent image fixability from being degraded depending on the

type of paper and reduce such phenomena as paper curl, uneven wax, and offset.

• The fusing temperature can be varied using the setting made in “Machine/ Fusing Temperature” of the Service Mode.

Setting item

Setting range

Default setting

Plain paper

- 20 °C to +10 °C (step: 5 °C)

0 °C

Plain paper+

Thick paper

Thick 1

Thick 1+

Thick 2

Thick 2+

Postcard

Envelope

Recycled paper

Coated paper 1

Coated paper 1+

Coated paper 2

Label

Letterhead

(g) Energy save mode

• The machine enters the energy save mode from any standby state to thereby reduce power consumption (TEC value).
• TEC value (typical electricity consumption): Energy saving criteria for copiers and printers to comply with the Energy Start program.

Power consumption (kWh) at the office assuming operation of a product for one week (5 working days + 2 holidays) is calculated from
the print speed and power consumption of the product.

• The energy save mode may be either the low power mode or sleep mode, whichever is enabled depending on the set conditions.

Temperature control during sleep mode

• To reduce power consumption during the sleep mode, power to the fusing heater lamp is shut down to stop heating the fusing belt.
• If the fusing belt temperature is decreased to room temperature, the printable temperature can be recovered within the same period of

Olivetti d-Color MF 4003, Service Manual

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