Alignment & Adjustment

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6
6. Alignment and Adjustments
Alignment and Adjustmens
This chapter describes some of the main service procedures including:
Using the EDC mode; Clearing paper jam and test patterns.
Much of this chapter is also included in the user's guide.
6.1. Control Panel
6.1.1 Overview
- The CLP-300 printers do not have LCD panel which is used in other color model printers. On the contrary
to other models of color printers, they show the status of the printer only with their LEDs.
- The CLP-300 printers have 2 keys and 6 LEDs. The ‘User Interface’ module handles the processing of the
‘Key Press’ and ‘Led control’ at different states of the machine.
6.1.2 Architecture
KEY (2 key): Stop key, Black only key
LED (6 LEDs):
4 LED for CMYK toners : toner-low(cyan, magenta, yellow, black) LEDs
1 LED for status : ready (green) or error(red) status LED (two color LED)
1 LED for Black only: If Black only key is pressed, Black only led glows.
Stop
Status
Black Only
CLP-300
6.1.3 Data and Control Flow
User interface (panel) is made up of
- KEY input detection & process
- LED control
The initial process to use the panel checks register°Øs values of key and LED.
If user input key value, the operation to be defined by key value is processed and the LED operation to be
defined by printer status is controlled.
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Alignment and Adjustmens
6.2 Function
6.2.1 KEY Function
There are two keys present. The one is Stop key and the other is Black only key.
If users input key value, the key input is transferred via GIP (General Input Port) and the operation to be
defined by key value is processed.
6.2.1.1 Functions
Stop key function is made up of
- Demo page/Configuration sheet printing function
- Job cancels function
- Start manual feeding function
- Firmware downloads mode function
Black only key function is made up of
- Change printer mode to Black-only mode function
- Black only LED light function
6.2.1.2 Detail Description
KEY input detection & process order
1) User KEY input
2) KEY input detection
: If the key input is detected when the key input check per timer tick 10ms, The 10ms interrupt service
routine sends the key detection event to panel task.
3) KEY input process
Stop key input process
: After the panel task is received the Stop key detection event, it checks the engine error status two times
and process the operation to be defined by key value.
- Demo page/Configuration sheet function
This button will have multiple functions when the printer is in idle state.
Demo page printing
Press and hold this button for about 2 seconds until the control panel lights blink slowly to print a
demo page.
Configuration sheet printing
Press and hold this button for about 6 seconds until the control panel lights blink rapidly to print a con-
figuration sheet.
- Job cancels function
When the printer is printing an active printing job, press and holds this button until the control panel
lights blink to cancel a job the printer is currently except the manual job.
- Start manual feeding function
When you select manual feed for paper source, press this button each time you feed a sheet of paper
manually.
The application of manual feeding function in CLP-300 will be determined
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Alignment and Adjustmens
- Firmware downloads mode function
Turn on the printer at the same time that the button is pressed.
If all LEDs scroll, release the button and download the firmware ROM file via USB port
Black only key input process
: After the panel task is received the Black only key detection event, it changes printer mode to Black only
mode and notifies driver that the printer mode is changed to Black only mode. If printer mode is Black
only mode, driver makes printer image by only mono excepting color and the Black only LED glows.
6.2.2 LED Function
There are six LEDs present. Status led indicate the error/online status of the printer in idle mode. In error
mode, the status LED glows by red color and in ready mode, it glows by green color. The other four LEDs
indicate the toner status. If the black toner needs to change, the toner-low (black) LED glows and if the
color (yellow, magenta, cyan) toners need to change, the toner-low (yellow, magenta, cyan) LED glows.
Black only LED indicate the printer mode. If the users press the Black only button, the printer mode
changes to Black only mode and Black only LED glows.
6.2.2.1 Functions
LED function is made up of
- Ready/Printing status display
- Error status display
- Toner low status display
- Black only status display
6.2.2.2 Detail Description
LED control order
1) Control LED according to current printer state
: After the panel task is received each event, the LED operation is controlled by current printer status.
2) Write LED value to GOP (General Output Port)
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Alignment and Adjustmens
LED behavior
Status LED
Black-only Toner-low
Status
(Green/Red)
LED
(CMYK)LEDs
Green LED ON
N/A
N/A
Ready to receive the data.
Green LEDS
N/A
N/A
Receiving the data from the host.
LOWLY BLINK
Green LED
N/A
N/A
Printing the page.
FAST BLINK
Red LED BLINK
N/A
N/A
Paper source is set to MANUAL .
Need to push the button to start the
printing
Red LED ON
N/A
N/A
Out of paper
Red LED ON
N/A
N/A
Cover open
Red LED ON
N/A
N/A
Paper jam
Green/Red BLINK
BLINK
CMYK BLINK
Service error ( LSU or Fuser error)
N/A
N/A
Toner-low(black) ON
Black toner needs to change
N/A
N/A
Toner-low(cyan) ON
Cyan toner needs to change
N/A
N/A
Toner-low(magenta) ON
Magenta toner needs to change
N/A
N/A
Toner-low(yellow) ON
Yellow toner needs to change
N/A
ON
N/A
Black only key is pressed
Service Error LED Operation
All LEDs blink the each time interval.
Service Error
LED operation
Fuser Error
Open Fuser Error
All LEDs (Toner low LEDs, Status (Red) LED, Black only LED) blink
a time interval of 1 second.
No Heat Error
All LEDs (Toner low LEDs, Status (Red) LED, Black only LED) blink
a time interval of 4 seconds.
Over Heat Error
All LEDs (Toner low LEDs, Status (Green/Red) LED, Black only
LED) blink a time interval of 1 second.
Scanner Error
P Motor Error
All LEDs (Toner low LEDs, Status (Green) LED, Black only
(=LSU Error)
LED) blink a time interval of 1 second.
H Sync Error
All LEDs (Toner low LEDs, Status(Green) LED, Black only LED)
blink a time interval of 4 seconds.
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Alignment and Adjustmens
Assert Error LED Operation
The panel LED operation display the line number of assert error occurrence.
Line number LED operation
start & end
All LEDs(Toner low LEDs, Status(Red) LED, Black only LED) turn ON for approximately 2 sec-
onds and then All LEDs turn OFF for approximately 3 seconds.
1
After Status (Red) LED blinks one time, Toner low LEDs blink one time.
2
After Status (Red) LED blinks two times, Toner low LEDs blink one time.
3
After Status (Red) LED blinks three times, Toner low LEDs blink one time.
4
After Status (Red) LED blinks four times, Toner low LEDs blink one time.
5
After Status (Red) LED blinks five times, Toner low LEDs blink one time.
6
After Status (Red) LED blinks six times, Toner low LEDs blink one time.
7
After Status (Red) LED blinks seven times, Toner low LEDs blink one time.
8
After Status (Red) LED blinks eight times, Toner low LEDs blink one time.
9
After Status (Red) LED blinks nine times, Toner low LEDs blink one time.
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