2005*

Bias Control

001

Bias Correction 1

[0.1 to 1 / 0.85 / 0.05 step]

Adjusts the lower threshold value for the charge roller correction.

When the value of VSDP/VSG is greater than this value, the charge roller voltage increases by 30 V (e.g., from –500 to –530).

002

Bias Correction 2

[0.1 to 1 / 0.9 / 0.05 step]

Adjusts the upper threshold value for the charge roller correction.

When the value of VSDP/VSG is greater than this value, the charge roller voltage decreases by 30 V (absolute value).

003

Bias Adjustment 1

[1000 to 2000 / 1500 / 10 vol]

Adjusts the lower limit value for charge roller voltage correction.

004

Bias Adjustment 2

[1000 to 2000 / 2000 / 10 vol]

Adjusts the upper limit value for charge roller voltage correction.

005

Bias Adjustment 3

[0 to 100 / 30 / 10 vol]

Adjusts the correction voltage adjustment step size.

2103*

Erase Margin Adjustment

Adjusts the erase margin by deleting image data at the margins. L Size: 297.1 mm or more (length)

M Size: 216.1 to 297 mm (length) S Size: 216 mm or less (length)

001

Leading Edge

[0 to 9 / 3 / 0.1mm]

002

Trailing Edge

003

Left

[0 to 9 / 2 / 0.1mm]

004

Right

005

Duplex Trail.: L Size: Plain

[0 to 4 / 1 / 0.1mm]

006

Duplex Trail.: M Size: Plain

[0 to 4 / 0.8 / 0.1mm]

007

Duplex Trail.: S Size: Plain

[0 to 4 / 0.6 / 0.1mm]

008

Duplex Left: Plain

[0 to 1.5 / 0.3 / 0.1mm]

009

Duplex Right: Plain

010

Duplex Trail.: L Size: Thick

[0 to 4 / 0.8 / 0.1mm]

011

Duplex Trail.: M Size: Thick

[0 to 4 / 0.6 / 0.1mm]

012

Duplex Trail.: S Size: Thick

[0 to 4 / 0.4 / 0.1mm]

013

Duplex Left: Thick

[0 to 1.5 / 0.1 / 0.1mm]

014

Duplex Right: Thick

2105*

LD Power Adjustment

Adjusts the LD power for each mode.

Each LD power setting is decided by the process control.

001

LD1: Copy

[–50 to 79 / -24 (C2b), 5 (C2c) /1 ]

002

LD2: Copy

003

LD1: Printer/Fax

[–50 to 79 / -44 (C2b), -25 (C2c)/1 ]

004

LD2: Printer/Fax

2109

Test Pattern

001

Pattern Selection

[0 to 24 / 0 /1 ]

Test pattern of the GAVD

0: None

1: Vertical Line (1 dot)

2: Vertical Line (2 dot)

3: Horizontal Line (1 dot)

4: Horizontal Line (2 dot) 5: Grid Vertical Line

6: Grid Horizontal Line 7: Grid pattern small 8: Grid Pattern Large

9: Argyle Pattern Small 10: Argyle Pattern Large

11: Independent pattern (1 dot)

12: Independent Pattern (2 dot)

13: Independent Pattern (4 dot)

14: Trimming Area

15: Hound’s Tooth Check (Vertical) 16: Hound’s Tooth Check (Horizontal) 17: Black Band (Horizontal)

18: Black band (Vertical) 19: Checker Flag Pattern

20: Grayscale (Vertical Margin) 21: Grayscale (Horizontal Margin) 22: Two Beam Density Pattern 23: Full Dot Pattern

24:All white Pattern

002

Density

[0 to 15 / 15 /1 ]

Set the density of the test pattern which is output in SP2109-001. This SP is not used for the Grayscale patterns.

2220*

Vref Setting

Adjusts the TD sensor reference voltage (Vref). Change this value after replacing the development unit with another development unit that contains toner.

[1 to 5 / 4 / 0.01 ]

1. Check the value of SP2-220 in both the machine containing the test unit and the machine that you are going to move it to.

2. Install the test development unit, and then input the VREF for this unit into SP2-220.

3. After the test, put back the old development unit, and change SP2-220 back to the original value.

2221*

Reverse Interval Drum,Transfer

[0 to 2000 / 0 / 1 sheets]

Adjusts the threshold for the reverse rotation of the drum and development/transfer motors. This helps the drum and transfer belt cleaning operations. This reverse rotation will interrupt a multiple printing job.

2801

TD Sensor Initial Setting

Initialization

Performs the TD sensor initial setting and allows the service technician to enter the lot number of the developer. (The lot number is embossed on the edge of the developer package.) This SP mode controls the voltage applied to the TD sensor to make the TD sensor output about 3.0 V. Press "Execute" to start. After finishing this, the TD sensor output voltage is displayed.

Use this mode only after installing the machine, changing the TD sensor, or adding new developer.

2960*

Toner Overflow Sensor

[0 = OFF, 1= ON]

Selects whether or not the toner overflow sensor is activated.

2972*

Grayscale Limit (SSP)

Controls the halftone density level to prevent deterioration of the OPC. The halftone density is detected by the ID sensor, and the machine adjusts the intensity of the LD beam according to the upper/lower limit setting.

001

Upper Limit

[0 to 100 / 58 (C2b), 63 (C2c)/ 1vol ]

Defines the upper limit for grayscale.

A larger value allows a wider range of halftones at the pale end of the scale. If the image contains pale areas with fuzzy borders surrounded by dark areas, reduce this value to make the borders clearer.

002

Lower Limit

[0 to 100 / 52 (C2b), 57 (C2c) / 1vol ]

Defines the lower limit for grayscale.

A smaller value allows a wider range of halftones at the dark end of the scale.

2973*

Grayscale Cycle (SSP)

[0 to 1000 / 100 / 10 sheets ]

Set s the halftone operation interval in order to prevent deterioration of the OPC. If the number of copies exceeds this setting, at the end of the job, or if the door is opened and closed, charge correction is executed.

2974*

Image Density

001

Adjustment Mode

[1 to 5 / 3 / 1 ]

Adjusts image density. Changing this setting adjusts development bias and ID sensor output voltage that in turn raises or lowers image density.

2980*

Charge Counter

[0 to 1000000 / 0 / 1 sheets ]

Set the number of pages to print after toner and carrier initialization before the charge input is increased to compensate for deterioration over time in the polarity of the carrier.

The strength in the polarity of the carrier in the toner will eventually decrease and cause lower charge output. Setting the charge output to increase after a specified number of copies can compensate for this effect.