How to enter service mode - Samsung SCX-4600 Samsung SCX4632 Laser Printer – Error Codes and details

Tech Mode [Service Mode] – EDC Mode – Firmware upgrade – Error Messages and details – How to remove the document jam - Samsung Laser printers SCX4600 – SCX4632

In service (tech) mode, the technician can check the machine and perform various test to isolate the cause of a malfunction. While in Tech mode, the machine still performs all normal operations.

To enter the Tech Mode

To enter the Tech Mode, press the buttons as following

4 in 1 Model: “ Menu > # > 1 > 9 > 3 > 4 > Menu ” [SCX-4623 series]

3 in 1 Model: “Menu > ID Copy > Left > Right > Menu > Back” [SCX-4600 series]

And the LCD briefly displays ‘Tech Mode’, the machine has entered service tech mode.
After entering the tech mode, select the item you want by using a button on control panel.

Data Setup

Send Level
You can set the level of the transmission signal. Typically, the Tx level should be under -12 dBm.
Caution : The Send Fax Level is set at the best condition from factory. Never change settings arbitrarily.

DTMF Level
This is a setting value of the High level tone and low level tone at DTMF mode. (Not dial mode)

Pause Time
It shows the delay time when receiving the pause input at auto dial.

Dial Mode
This function can choose dial method.
*Default : Dial (Dial/Pulse).

Modem Speed
You can set the maximum modem speed. However, outbound communication is switched automatically to match the standard of the receiving fax. Therefore, when communicating with a lower speed modem, the outbound communication speed will be set to low. This will allow for better transmission/reception by the receiving fax. It is best set 33.6Kbps as default setting.

Error Rate
When the error rate is about exceed the set value, the Baud rate automatically adjusts to 2400 bps. This ensures that the error rate remains below the set value. You can select the rate between 5% and 10%.

Clear All Memory
The function resets the system to factory default settings. This function is used to reset the system to the initial value when the product was functioning normally. All the values are returned to the default values, and all the information, which was set by the user, will be erased.
NOTE: Always perform a memory clear after replacing the main board. Otherwise, the system may not operate properly.

Toner Low Level

The function is to set up the time to inform toner low status. This function can provide user convenience for replacing the toner cartridge.

Clear Count

This function resets Total Page Count, Flatbed Scan Count, ADF Scan Count.

Engine Footer

This function is for monitoring the engine status. If you perform this function, at printing, the setting value for engine is shown on the bottom of the printed page.

Machine Test

Switch Test

Use this feature to test all keys on the operation control panel. The result is displayed on the LCD window each time you press a key.

Test Param Set (Handset Model only)

You can set the parameter for handset standard.

Caution: The parameter value is set at the best condition in the shipment from factory.

Modem Test
Use this feature to hear various transmission signals to the telephone line from the modem and to check the modem. If no transmission signal sound is heard, it means the modem portion of the main board has malfunctioned.

Dram Test
Use this feature to test the machine’s DRAM. The result appears in the LCD display. If all memory is working normally, the LCD shows << O K >>ROM TEST
Use this feature to test the machine’s ROM. The result and the software version appear in the LCD display.
• FLASH VER : 1.00 V
• ENGINE VER :1.00V

Shading Test
This function is to get the optimum scan quality out of the CCD(Charge Coupled Device).
If the copy image quality is poor, perform this function to check the condition of the CCD unit.

Restart Machine
You can reboot the machine by using a key without mechanically rebooting.

Report

Configuration Report

This report shows the status of the user-selectable options. You may print this list to confirm your changes after changing settings.

Supplies Information Report

This report shows the status of toner cartridge. This report includes toner remaining, average area coverage, installed date etc.

EDC Mode

The EDC Mode is used to independently control and test each sensor and driver component, so as to more easily service the printer.

Method to enter

After turn on the system power, check the “Ready” message on the LCD.

2. To enter the EDC Mode, Push the buttons outlined below in the order outlined.
“Menu > Stop > Left arrow > Back > OK > Right arrow”

3. The message “COMPONENT TEST Press Menu Key” display on the LCD.

4. To get out [EXIT] of the EDC Mode, Press the “Stop” key.

EDC Mode Menu

Cover Status

Front Cover:  When the front cover opened, “Open” message display LCD. If the front cover closed, “Closed” message display LCD.

Sensor Status

0. Regi/Feed/Exit Sensor:

 Manually open and close the actuator of the sensor [Regi, Feed, and/or Exit Sensor] you wish to check, the message “Without Paper” and “With Paper” message will be displayed.

1. Empty:

 Manually open and close the actuator of the Empty Sensor, the message “Present” and “Empty” message will be displayed.

2. Motor Test

Main Mtr Nor:  If “OK” key is pushed after “ON” displayed, motor will be run. Main motor will auto - stop after 60 seconds and ”OFF” message will be displayed.

Slow:  If “OK” key is pushed after “ON” displayed, motor will be slowly run.  Main motor will auto - stop after 60 seconds and ”OFF” message will be displayed.

3. Fan Test

Fuser Fan:  If “OK” key is pushed after “ON” displayed, fan will be run. Fuser fan will auto - stop after 10 seconds and ”OFF” message will be displayed.

4. Clutch Test

Pick up Clutch:   When “OK” key is pushed after ”ON” message displayed, clutch turns on.  Pick up Clutch will be turn off after 3 seconds and ”OFF” message will be displayed.

Regi Clutch:   When “OK” key is pushed after ”ON” message displayed, clutch turns on.  Regi Clutch will be turn off after 3 seconds and ”OFF” message will be displayed.

5. Fuser Ctrl

Temp Control:  Fuser on and off. “ON” is selected, fuser will be active and display the fuser temperature [XXX] but “OFF” is selected, fuser will be stop.

Fuser Temp:  Fuser temperature displayed on LCD (example: [170] )

6. LSU Control

LD Power:  When “OK” key is pushed after ”ON” message displayed, ”OFF” message will be displayed after 10 seconds
LSU Motor:  If “OK” key is pushed after “ON” displayed, motor will be run. LSU motor will auto - stop after 10 seconds and ”OFF” message will be displayed.
LSU Ready:  If “OK” key is pushed after “ON” displayed, motor will be run. ”1” message will be displayed.
Hsync:  If “OK” key is pushed after “ON” displayed, motor will be run. ”1” message will be displayed.

7. DEV Control

THV (+):  If “OK” key is pushed after “ON” displayed, THV (+) will be turned on.
THV (-):  If “OK” key is pushed after “ON” displayed, THV (-) will be turned on.
Dev Bias:  If “OK” key is pushed after “ON” displayed, Dev Bias will be turned on.
MHV Bias:  If “OK” key is pushed after “ON” displayed, MHV Bias will be turned on.

ACRONYMS AND Explanation

DEV – Developing High Voltage

EDC – Embedded Diagnostic Control

F/W – Firmware

HVPS – High Voltage Power Supply

H/W – Hardware

LD – Laser Diode

LSU – Laser Scanning Unit

MHV – Main High Voltage (Charge Voltage)

OPC – Optical Photo Conductor

SCF – Second Cassette Feeder

THV – Transfer High Voltage

Firmware Upgrade

USB and Network port are used to update the firmware.

Network applications (SWAS, SWS) can be used to update the firmware.

Normal Update

Send ROM file via USB, network port in Ready state.  It will automatically update and reset.

Special Mode Update

1. Power On While Pressing “Stop / Clear” Button.

- It displays download mode message.

2. Send ROM file via USB.

3. It will automatically update and reset.

* You can refer to the F/W Version Info. by pressing “ Menu > # > 1 > 9 > 3 > # ”

* If the machine is still not fyou cannot necessary you should perform factory clearing

“ Menu > # > 1 > 9 > 3 > Start ” (SCX-4623series)

“ Menu > ID Copy > Left > Right > Menu > Start ” (SCX-4600series) after updating Rom file.

Note : All of count values and data saved in MFP will be cleared.

Defective Images and reasons

If an image defects appears at regular intervals on the printed-paper, it is due to a faulty or damaged roller.
Refer below and check the condition of the appropriate roller.

Faulty Toner Cartridge

OPC Drum:  75.6mm:  White and Black Spots
Developing Roller:   35mm:   White spot, Horizontal black band
Charging Roller:   37.5mm:   Black Spot and line and periodic band
Supply Roller:   49mm:   Periodic Band by little difference of density.

Faulty transfer roller

Transfer Roller:  47mm:   Ghost, Damaged image by abnormal transfer roller.

Faulty pressure roller

Pressure Roller:  75.4mm:   Background.

Faulty fuser roller

Fusing Roller:  77.5mm:   Black spot and image ghost.

Error Messages

Messages appear on the control panel display to indicate the machine’s status or errors. Refer to the tables below to understand the messages’ and their meaning, and correct the problem, as is necessary.

Checking display messages

If a message is not in the table, reboot the power and try the printing job again.
Some messages may not appear in the display depending on the options or models.
[error number] indicates the error number.
[tray type] indicates the tray number.
[media type] indicates the media type.
[media size] indicates the media size.
[color] indicates the color of toner or imaging unit.

 [COMM. Error]:   The machine has a communication problem.

Ask the sender to try again.

[Incompatible]:  The machine has received a fax which is registered as a junk fax.

The received fax data will be deleted. Reconfirm junk fax setup.

[Line Error]:  Your machine cannot connect with the receiving fax machine or has lost contact because of a problem with the phone line.

Try again. If the problem persists, wait an hour or so for the line to clear and try again. Or, turn the ECM mode on.

[No Answer]:  The receiving fax machine has not answered after several redial attempts.

Try again. Make sure that the receiving machine is operational and has paper.

[Stop Pressed]:  Stop/Clear has been pressed during an operation.

Try again.

ADF COVER OPEN ERROR

The ADF cover is opened. Close the ADF cover.

BOOTP problem Auto IP Run

The IP address assignment is failed.  This happens, when Auto IP for BOOTP is set in SyncThru Web Service.

Change the IP address assignment method to DHCP or Static. If you do not change this option, the BOOTP server continually asks to assign the IP Address.

BOOTP problem Reconfigure DHCP

The IP address assignment is failed.  This happens, when Auto IP for BOOTP is not set in SyncThru Web Service.

Change the IP address assignment method to DHCP or Static. If you do not change this option, the BOOTP server continually asks to assign the IP Address.

DHCP problem Reconfigure BOOTP

The IP address assignment is failed. This happens, when Auto IP for DHCP is set in SyncThru Web Service.

Change the IP address assignment method to BOOTP or Static. If you do not change this option, the DHCP server continually asks to assign the IP Address.

DHCP problem: Auto IP Run

The IP address assignment is failed.  This happens, when Auto IP for DHCP is not set in SyncThru Web Service.

Change the IP address assignment method to BOOTP or Static. If you do not change this option, the DHCP server continually asks to assign the IP Address.

Document Jam. Remove Jam

The loaded original has jammed in the ADF.

Open the ADF cover and clear the jam.

How to remove the document jam

Clearing Original Document Jams

When an original jams while passing through the document feeder, a warning message appears on the display screen.

1. Remove any remaining originals from the document feeder.
2. Open the document feeder cover.
3. Gently remove the jammed original from the document feeder.
* If you see no paper in this area, go to step 5.
4. Close the document feeder cover. Reload the originals you removed, if any, in the document feeder.

5. Open the scanner lid

6. Gently remove the original from the feed area by carefully pulling it to the right using both hands.

7. Close the scanner lid. Load the removed pages back into the document feeder.
Note: Ensure the number of originals you place in the ADF does not exceed its tray capacity

Door Open. Close it
The front cover is not securely latched.
1. Close the cover until it locks into place.
2. Enter the EDC mode and check the cover status.

Error #02-000~2  Turn off then on
A fuser error has occurred.

1. Turn the printer off and back on to continue.

2. Reconnect the cable between the fuser and SMPS board.

3. Remove the fuser and re-install it.

4. Check the thermostat. If it is defective, replace it.

5. If error persists, replace the fuser.

6. If error persists, replace the SMPS/HVPS board.

Error #04-002 Turn off then on
LSU error has occurred

1. Enter the EDC mode. [instructions to enter EDC mode given above]
2. Execute the LSU test.
3. If the LSU does not operate, replace it.

Install Toner Install it
The toner cartridge is installed improperly, or not installed.
Reinstall the toner cartridge two or three times to confirm it is seated properly. If the problem persists, the toner cartridge is not being detected.

Memory Full Remove Job

The memory is full.

Press the left/right arrow to highlight Cancel or Start, then press OK. If you select Cancel , the machine stops the fax job. If you select Start, the machine only sends scanned documents of the fax job.

Network Problem: IP Conflict
The IP address is used elsewhere.

Check the IP address or obtain a new IP address.

Not Compatible Toner cartridge
The indicated toner cartridge is not suitable for your machine.
Install the corresponding toner cartridge with a Samsung-genuine cartridge.

Output bin Full Remove paper
The output tray is full.
Or the sensor is not facing down.
Remove papers from the output tray, the machine resumes printing. Or make sure the sensor is facing down.

Paper Empty in Tray1
There is no paper in the indicated tray.

1. Load paper in the tray.
2. If the message does not clear, enter the EDC mode and check the empty sensor. Replace empty sensor if defective.

Paper Jam in exit area
Special print media has jammed in the paper exit area.
Clear the jam.
2. If the message does not clear, enter the EDC mode and check the exit sensor. Replace exit sensor.

Paper Jam in MP Tray
Paper has jammed in the manual tray area.
 1. Clear the jam.
2. If the message does not clear, check the following.
- If pick up roller does not rotate and paper does not feed, check the pick up clutch.
3. If Pickup roller is rotating but the paper is not feeding, replace the pick up rubber.
4. Check the feed sensor in EDC mode. If it is defective, replace it.

Paper Jam in Tray1
Paper has jammed in the tray1 area.

1. Clear the jam.
2. If the message does not clear, check the following.
- If pick up roller does not rotate and paper does not feed, check the pick up clutch.
3. If Pickup roller is rotating but the paper is not feeding, replace the pick up rubber.
4. Check the feed sensor in EDC mode. If it is defective, replace it.

Paper Jam inside machine
Paper has jammed inside the machine.
1. Clear the jam.
2. If the message does not clear, check the feed sensor or exit sensor.  Replace the defective sensor.

Prepare new cartridge
Small amount of toner is left in the indicated cartridge. The cartridge is getting low on toner.
Prepare a new cartridge for a replacement. You may temporarily increase the printing quality by redistributing the toner.

Replace new cartridge
The cartridge is almost empty.

Replace the toner cartridge for the best print quality when this message appears.

Replace Toner

The cartridge is out of toner. Replace the toner cartridge with a Samsung-genuine toner cartridge.
Self Diagnostics Please wait
The engine in your printer is checking some problems detected.  Please wait a few minutes.
Sleeping... The machine is in the power save mode.
When data is received, it switches to on-line automatically.
Too many Faxes Remove Job
Too many faxes are received. Remove received fax.