Running CE Mode (Diagnostic Mode) on the C2660dn / C2665dnf / C3760n / C3760dn / C3765dnf Dell Laser Printers

Table of Contents:

1. CE Mode (Diagnostic Mode)
2. Booting into CE Mode
3. IOT Diags
4. Paper Feed Tests
5. CE Mode Test Prints
6. Digital Input Feed Sensor Tests

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1. CE Mode (Diagnostic Mode)

On most models of Dell Laser Printers it is possible to boot them into a diagnostic mode, called CE Mode, in order to troubleshoot the internal components in the system.

CE mode is broken into several sections:

• Parameter: Provides a life counter for consumable components as well as a complete page count.
• ESS Diags: Tests functionality of electronic components and controller elements, such as Operator Panel functionality.
• Print Info: Provides detailed settings pages.
• Test Print: A large variety of colour test prints allowing you to diagnose each toner/toner developer individually as welll as testing alignment (print skew issues).
• IOT Diags: Digital Input - Tests individual Sensors (useful for diagnosing paper jams and other hardware failures)
  Digital Output - Test individual Motors and clutches (useful for diagnosing paper Jam and paper feed issues)

On the C2665dnf / C3765dnf there is also an additional section for Scan/Fax Diagnostics.

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2. Booting into CE Mode

C2660 / C3760n / C3760dn :

• Hold down the left arrow, right arrow, and Menu buttons while power the printer on.
• When prompted for a password, press up, up, and OK.

C2665dnf / C3765dnf :

• Hold down the 4, 5, and 6 buttons while powering the printer on.
• When prompted for a password, press 2, 2, then 5. Then select Printer Diag.

The two most common uses for CE Mode will be running Digital Output Motor and Clutch Tests to determine jam issues.

For an explanation on running diags on Motors and Clutches please use the guide below:

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3. IOT Diags

 

Digital Output:

Running Motor and Clutches on the C2660dn / C2665dnf / C3760n / C3760dn / C3765dnf for diagnosing Feed / Jam / abnormal noise issues can be performed by following article: SLN284346 "How to Troubleshoot Abnormal Noise Issues on the C2660dn / C2665dnf / C3760n / C3760dn / C3765dnf Dell Laser Printers":

• Select Printer Diag.
• Scroll down until IOT Diag is displayed and Select.
• Then select Digital Output.
• set 041-001 to EXEC (ON) by pressing the Select (Tick) Button.

This Motor must be left at EXEC for the other motors to run correctly to allow accurate diagnosis.

Scroll Down to 071 001: Main Motor and Press Select (Tick) To Turn to Exec (ON)- You should now hear the main Motor.

Leave the Main Motor at EXEC and scroll down to the following Clutches and Turn on each in sequence, ensuring you stop each test before starting the next.

• 071 010 Regi Clutch
• 071 011 Exit Clutch
• 071 012 Exit Clutch2
• 071 013 Duplex Clutch
• 071 020 Option Feeder1 Feed Clutch.
• 071 021 Option Feeder2 Feed Clutch (Only If an Optional Tray 2 is installed).
• 071 022 Option Feeder1 Take Away Clutch.
• 071 023 Option Feeder2 Take Away Clutch (Only If an Optional Tray 2 is installed).
• 071 007 MSI Feed Solenoid.

Each time you should hear a click as the clutch is turned on.

See Below for a list of Motor DO (Digital Output) Tests:

• Scroll down until IOT Diag is displayed and Select
• Then select Digital Output
• Set 041-001 to EXEC (ON) by pressing the Select (Tick) Button
• Run each Motor individually to determine functionality
  • 042 001 Main Fan
  • 061 001 ROS Motor
  • 071 001 Main Motor
  • 071 004 Sub Motor
  • 071 014 Option Feeder1 Motor
  • 071 017 Option Feeder2 Motor (Only If an Optional Tray 2 is installed)
  • 093 001 Developer Motor
  • 093 004 Yellow Toner Dispense Motor
  • 093 006 Magenta Toner Dispense Motor
  • 093 008 Cyan Toner Dispense Motor
  • 093 010 Black Toner Dispense Motor

Digital Inputs:

Digital Input checks whether the digital input (DI) components function properly.

The display shows [0] when the digital input test is started, and the value will be increased when the DI components are switched from OFF to ON, which is used for confirming that the component functions normally.

The test targets all DI components (sensors).

See Below for a list of all DI (Digital Input) Tests:

• 010 200 Fusing Relay Enable
• 010 201 Fusing Fuse Sensor
• 041 300 Inter Lock Side Cover
• 041 301 Inter Lock Rear Cover
• 041 302 Front Cover Sensor
• 042 200 LVPS Fan Alarm
• 071 100 MSI No Paper Sensor
• 071 101 Tray1 No Paper Sensor
• 071 102 MSI Detect Sensor
• 071 103 Regi Sensor
• 071 104 Exit Sensor
• 071 105 Full Stack Sensor
• 071 109 Option Feeder1 Size Sensor0
• 071 110 Option Feeder1 Size Sensor1
• 071 111 Option Feeder1 Size Sensor2
• 071 112 Option Feeder2 Size Sensor0
• 071 113 Option Feeder2 Size Sensor1
• 071 114 Option Feeder2 Size Sensor2
• 071 115 Option Feeder1 No Paper Sensor
• 071 116 Option Feeder2 No Paper Sensor
• 071 117 Option Feeder1 Path Sensor
• 071 118 Option Feeder2 Path Sensor
• 071 200 Main Motor Alarm
• 071 201 Sub Motor Alarm
• 071 202 Option Feeder1 Motor Alarm
• 071 203 Option Feeder2 Motor Alarm
• 093 200 Deve Motor Alarm
• 094 202 Waste Toner Box Full Sensor

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4. Paper Feed Tests

 

In CE Mode you are also able to run manual feed tests, allowing us to accurately pinpoint the motor or component that is failing and causing a jam.

This is done by booting into CE Mode, as described above then:

• Select Printer Diag
• Scroll down until IOT Diag is displayed and Select.
• Then select Digital Output.
• Set 041-001 to EXEC (ON) by pressing the Select (Tick) Button.

This Motor must be left at EXEC for the other motors to run correctly to allow accurate diagnosis.

Then turn on each Motor in sequence to feed the paper through the printer.

Tray 1 Feed Test

Motor/Clutch	Normal Speed	Half Speed
Main Motor	071-001	071-002
Sub Motor	071-004	071-005
Regi Clutch	071-010	071-010
Exit Clutch	071-011	071-011
Tray 1 Feed Clutch	071-008**	071-008**

** You will need to toggle this on and off Twice in order to feed a single sheet of paper.

MPF Fed Test

Motor/Clutch	Normal Speed	Half Speed
Main Motor	071-001	071-002
Sub Motor	071-004	071-005
Regi Clutch	071-010	071-010
Exit Clutch	071-011	071-011
Take Away 2 Clutch	071-009	071-009
MSI Feed Solenoid	071-007**	071-007**

** You will need to toggle this on and off Twice in order to feed a single sheet of paper.

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5. CE Mode Test Prints

Test Pattern (No Image [IOT]):

The No Image [IOT] Test Pattern prints the IOT built-in blank page pattern on a side of paper (IOT print functionality check).

Test Pattern (Test Pat 600 [IOT]):

The Test Pat 600 [IOT] Test Pattern prints the IOT built-in test pattern 600 dpi on a side of paper (IOT print functionality check).

Grid Pattern (Grid 2):

The ESS built-in Grid 2 Pattern (Grid2) prints the grid pattern on a side of paper.

Cyan 20%:

The Cyan 20% (ESS built-in test pattern) fills one side of paper with 20% density cyan.

Magenta 20%:

The Magenta 20% (ESS built-in test pattern) fills one side of paper with 20% density magenta.

Yellow 20%:

The Yellow 20% (ESS built-in test pattern) fills one side of paper with 20% density yellow.

Black 20%:

The Black 20% (ESS built-in test pattern) fills one side of paper with 20% density black.

CMY 20%:

The CMY 20% (ESS built-in test pattern) fills one side of paper with 20% density of the mixture of cyan, magenta, and yellow.

Gradation:

The Gradation (ESS built-in test pattern) prints the broken border patterns with the density of 0 to 100% cyan, magenta, yellow, and black.

Toner Pallet Check:

The Toner Pallet Check (ESS built-in test pattern) prints four bars, filled with 100% density of each color (C/M/Y/K), lined on the paper.

Use this test for checking the density of each toner cartridge.

Contamination Check:

The Contamination Check prints 5 sheets of paper with the pattern of millimeter scale on the top/left edges and inch scale on the bottom/right edges, each filed with Y/M/C/K colour of 20% density, and the one with defect list (which helps finding defects such as lines, streaks, smudges, and scaling the size of the defect to identify the part to be replaced).

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6. Digital Input Feed Sensor Tests

Digital Input checks whether the digital input (DI) components function properly.

A paper jam error may occur if one of the sensors are stuck or damaged.

The guide below shows the most likely sensors for any jam or feed issue and how to test functionality.

Registration Sensor:

DI: 071-103

The Registration Sensor identifies whether paper is jammed internally when pulled from the Tray or the MPF.

In order to test the Regi Sensor:

1. Boot into CE Mode and go to the Digital Input Tests.
2. Open the Back Cover and remove the Fuser Unit.
3. With the door open, the Regi Sensor can be seen on the bottom half of the Printer, shown below.
   
4. Turn on the sensor 071-103.
5. The LCD display will show 071-103 L0.
6. Use your finger to move the Regi Sensor, every time you move the sensor the counter should change.
   
7. The change will be registered in the following way:
   L0 -> H0 -> L1 -> H1 -> L2 -> H2... (L: sensor closed, H: sensor open)
8. If the counter does not move up then there may be some damage to the sensor or the controller card in the printer.

Exit Sensor:

DI: 071-104

The Exit Sensor advises the Printer that paper has entirely left the printer and a job is complete.

In order to test the Exit Sensor:

1. Boot into CE Mode and go to the Digital Input Tests.
2. Open the Back Cover and remove the Fuser Unit.
3. With the door open, the Exit Sensor can be seen on the top half of the Printer, shown below.
   
4. Turn on the sensor 071-104.
5. The LCD display will show 071-104 L0.
6. Use your finger to move the Regi Sensor, every time you move the sensor the counter should change.
   
7. The change will be registered in the following way:
   L0 -> H0 -> L1 -> H1 -> L2 -> H2... (L: sensor closed, H: sensor open)

If the counter does not move up then there may be some damage to the sensor or the controller card in the printer.

If these steps do not correct the problem, please contact Dell Technical Support.

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More information can be found in the User Guide for your model printer, or visit our Printer Support site for additional information, troubleshooting articles and videos.  

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