Alignment & Adjustment.pdf

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

Ready to receive the data.

Green LEDS

N/A

Receiving the data from the host.

LOWLY BLINK

Green LED

N/A

Printing the page.

FAST BLINK

Red LED BLINK

N/A

Paper source is set to MANUAL .

Need to push the button to start the

printing

Red LED ON

N/A

Out of paper

Red LED ON

N/A

Cover open

Red LED ON

N/A

Paper jam

Green/Red BLINK

BLINK

CMYK BLINK

Service error ( LSU or Fuser error)

N/A

Toner-low(black) ON

Black toner needs to change

N/A

Toner-low(cyan) ON

Cyan toner needs to change

N/A

Toner-low(magenta) ON

Magenta toner needs to change

N/A

Toner-low(yellow) ON

Yellow toner needs to change

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.

After Status (Red) LED blinks one time, Toner low LEDs blink one time.

After Status (Red) LED blinks two times, Toner low LEDs blink one time.

After Status (Red) LED blinks three times, Toner low LEDs blink one time.

After Status (Red) LED blinks four times, Toner low LEDs blink one time.

After Status (Red) LED blinks five times, Toner low LEDs blink one time.

After Status (Red) LED blinks six times, Toner low LEDs blink one time.

After Status (Red) LED blinks seven times, Toner low LEDs blink one time.

After Status (Red) LED blinks eight times, Toner low LEDs blink one time.

After Status (Red) LED blinks nine times, Toner low LEDs blink one time.

Service Manual

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