Alignment & Adjustment.pdf

Alignment & Troubleshooting

4. Alignment & Troubleshooting

4.1 Alignment and Adjustments

This chapter describes the main functions for service, such as the product maintenance method, the test

output related to maintenance and repair, Jam removing method, and so on.

It includes the contents of manual.

4.1.1. Control Panel

4.1.1.1 Overview

- The CLP-31x series 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-31x series printers have 1 keys and 6 LEDs. The ‘User Interface’ module handles the processing

of the ‘Key Press’ and ‘LED control’ at different states of the machine.

4.1.1.2 Architecture

KEY (1 key): Stop key

LED (6 LEDs):

4 LED for CMYK toners : toner-low(cyan, magenta, yellow, black) LEDs

2 LED for status : ready (green) or error(red) status LED (two color LED)

1 LED for Jam display

4.1.1.3 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’s values of key and LED.

If user input key value, the operation to be deined by key value is processed and the LED operation to be

deined by printer status is controlled.

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Alignment & Troubleshooting

4.1.2 Function

4.1.2.1 KEY Function

There are one keys present. The one is Stop key.

If users input key value, the key input is transferred via GIP (General Input Port) and the operation to be

deined by key value is processed.

4.1.2.1.1 Functions

Stop key function is made up of

- Demo page/Coniguration sheet printing function

- Job cancels function

- Start manual feeding function

- Firmware downloads mode function

4.1.2.1.2 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 deined by key value.

- Demo page/Coniguration 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.

Coniguration sheet printing

Press and hold this button for about 5 seconds until the control panel lights blink rapidly to print a

coniguration 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-310 series will be determined

- 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 irmware ROM ile via USB port

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Alignment & Troubleshooting

4.1.2.2 LED Function

There are ive 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.

4.1.2.2.1 Functions

LED function is made up of

- Ready/Printing status display

- Error status display

- Toner low status display

4.1.2.2.2 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 & Troubleshooting

LED behavior

STATUS LED TONER COLORS LED

DESCRIPTION

lights green

all LEDs off

The machine is ready to print.

slowly blinks

green

all LEDs off

The machine is receiving data from the computer.

fast blinks green all LEDs off

The machine is printing data.

lights red

all LEDs off

• The machine is experiencing an error, such as jammed paper,

open cover, empty paper, installed waste toner container, or

full waste toner container.

• The machine is experiencing a service required error, such

as LSU error, fuser error, or Contact your sales or service

representative.

lights orange

all LEDs off

The machine is experiencing an error such as jammed paper.

lights green

each LED blinks red

Each toner cartridge is near the end of its life.

blinks red

each LED lights red

Each toner cartridge is almost empty. You can print, but the

quality is not reliable.

lights red

each LED lights red • Each toner cartridge is totally exhausted. You can not print.

• Each toner cartridge is wrong.

lights green

each LED blinks red in

a repeated order

The machine is warming up.

All printing errors will be appear in the Smart Panel program window.

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) turn ON for approximately 2 seconds 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 ive 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.

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Alignment & Troubleshooting

4.1.3 Jam Removal

TIPS FOR AVOIDING PAPER JAMS

By selecting the correct media types, most paper jams can be avoided.

When a paper jam occurs.

• Follow the procedures on page 30. Ensure that the adjustable guides are positioned correctly.

• Do not overload the tray. Ensure that the paper level is below the paper capacity mark on the inside of the

tray.

• Do not remove paper from the tray while your machine is printing.

• Flex, fan, and straighten paper before loading.

• Do not use creased, damp, or highly curled paper.

• Do not mix paper types in a tray.

• Use only recommended print media.

• Ensure that the recommended side of the print media is facing up in the tray.

4.1.3.1 Clearing Paper Jams

NOTE: When removing paper that is jammed in the printer, if possible always pull the paper in the direction

that it normally moves so as not to damage internal components. Always pull irmly and evenly; do

not jerk the paper. If the paper tears, ensure that all fragments of paper are removed; otherwise a jam

will occur again.

If a paper jam occurs, the Status LED on the control panel lights red. Find and remove the jammed paper.

To resume printing after clearing paper jams, you must open and close the front cover or rear cover.

1. Pull the tray out of the printer and remove the

jammed paper.

2. To remove the jammed paper, open the rear

cover.

If you can not ind the jammed the paper,Go to

the next step.

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