Alignment & Adjustment

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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.
Service Manual
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Samsung Electronics
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.
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 ive 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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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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Samsung Electronics
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