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2KN/2KP
1-3-41
U100
Setting the main high voltage
Description
Performs the main charging output.
Purpose
To check the main charging. Do not change the preset value.
Start
Press the start key. The screen for selecting an item is displayed.
Method for main charger output
1. Select the main charger output at the screen for selecting an item: select one from MC ON, MC ON/OFF
or LASER ON/OFF on the touch panel. The selected operation starts.
2. To stop operation, press the stop/clear key.
Setting the grid control voltage
1. Select DSP DATA at the screen for selecting an item.
2. Change the setting using the * or # keys.
Increasing the setting makes the surface potential higher, and decreasing it makes the potential lower.
Change in value per step: approximately 3.6 V
3. Press the start key. The value is set.
Setting the value of the potential compensation
1. Select MC ADJ GAIN at the screen for selecting an item.
2. Change the setting using the * or # keys.
Basically, the setting need not be changed. Increase the setting value when poor image quality is
caused by dirt in the main charger wire.
3. Press the start key. The value is set.
Setting the potential compensation of first copy start
1. Select START ADJ GAIN at the screen for selecting an item.
2. Select 0 (OFF) or 1 (ON) using the * or # keys.
Initial setting: 0 (OFF)
3. Press the start key. The value is set.
Supplement
When MC ON/OFF or LASER ON/OFF is selected, copying from an original is available in the interrupt copy-
ing mode.
Completion
Press the stop/clear key at the screen for selecting an item when main charger output stops.
The screen for selecting a maintenance item No. is displayed.
Maintenance
item No.
Description
Display
Description
DSP DATA
Changing the grid control voltage
MC ON/OFF
Turning the main charger on and off
LASER ON/OFF
Turning the main charger on and the laser scanner unit on and off
ADC SPV
The sampling value for every 1 sec of an potential sensor output
value
MC ADJ GAIN
Value of the potential compensation
START ADJ GAIN
Turning the potential compensation of first copy start on and off
Setting
Setting range
Reference value
Grid control voltage
40 to 120
82
Setting
Setting range
Initial setting
Value of the potential compensation
0/15/20/25
20
Summary of Contents for TASKalfa 620
Page 1: ...SERVICE MANUAL Published in August 2009 842KP112 2KPSM062 Rev 2 TASKalfa 620 820 ...
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Page 144: ...2KN 2KP 1 3 106 This page is intentionally left blank ...
Page 308: ...2KN 2KP 1 5 88 This page is intentionally left blank ...
Page 412: ...2KN 2KP 2 3 60 This page is intentionally left blank ...
Page 435: ...1 1 INSTALLATION GUIDE INSTALLATION GUIDE FOR SIDE FEEDER ...
Page 442: ...INSTALLATION GUIDE FOR LARGE SIZE SIDE FEEDER ...
Page 460: ...INSTALLATION GUIDE FOR DOCUMENT FINISHER ...
Page 475: ...INSTALLATION GUIDE FOR CENTERFOLD UNIT ...
Page 490: ...INSTALLATION GUIDE FOR MULTI JOB TRAY ...
Page 501: ...INSTALLATION GUIDE FOR PUNCH UNIT ...
Page 512: ...INSTALLATION GUIDE FOR STOPPER GUIDE ...
Page 515: ...INSTALLATION GUIDE FOR PRINTING SYSTEM ...
Page 518: ...INSTALLATION GUIDE FOR SCAN SYSTEM ...
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