Looks like dead. when powering on, control panel shows "self test" and then nothing shows up on the panel and printer is dead.

The following lists the chain of events that occur when you turn on a printer. You can follow this list as one means of determining if the printer is operating correctly. The exact chain of events depends upon the last power down condition and where the printer has last determined the printhead is positioned, this is stored in non-volatile RAM. The Checklist is the primary reference for troubleshooting power-up problems.

1. Power cord is plugged in and the power switch is turned on:

2. Power supply senses AC line voltage conditions (110 VAC or 220 VAC)

and enables DC voltages. If an overload occurs, the printer turns off the high voltage DC supplies, causing a "blink" effect on the Control Panel LEDs.

3. BIST test flashes the PE LED very briefly at a fast rate until the end of the

next test.

4. The Boot loader performs CPU initialization and RAM test. It then sends

the boot loader version to the serial port.

5. Power-On Self Test (POST) initializes the Control Panel. The Control

Panel LED turns red, green, orange, and then off. The Control Panel LCD then goes black and then clear. The POST version displays on the LCD

and waits two seconds. During this time the operator can press the Back

button to bypass the remaining POST test.

6. Low level Power-On Self Test (POST) diagnostics are performed. The

Control Panel displays status messages as each sub-test is performed.

This test takes about 8 seconds. All LEDs are off during the test.

If POST diagnostics pass, the Control Panel displays the Xerox logo and turns on the green LED.

If the test detects an error, the error message displays on the LCD and the printer flashes the LEDs with a repeating error code pattern.

7. The VxWorks operating system is initialized and engine code is started.

This takes about 15 seconds. The Xerox logo is displayed.

8. Print Engine Self Test (PEST) diagnostics are then performed. These test

the heaters, clutches, motors and solenoids. As each clutch is tested, you hear clicking with four high tones as each motor is tested. This test takes about 30 seconds.

9. The printer now runs the mechanical initialization. The exact sequence
depends on the initial position of the printhead and wiper assembly.

The following lists the chain of events that occur when you turn on a printer.

You can follow this list as one means of determining if the printer is operating correctly. The exact chain of events depends upon the last power down condition and where the printer has last determined the printhead is positioned, this is stored in non-volatile RAM.

1. Power cord is plugged in and the power switch is turned on:

2. Power supply senses AC line voltage conditions (110 VAC or 220 VAC)

and enables DC voltages. If an overload occurs, the printer turns off the high voltage DC supplies, causing a "blink" effect on the Control Panel LEDs.

3. BIST test flashes the PE LED very briefly at a fast rate until the end of the

next test.

4. The Boot loader performs CPU initialization and RAM test. It then sends

the boot loader version to the serial port.

5. Power-On Self Test (POST) initializes the Control Panel. The Control

Panel LED turns red, green, orange, and then off. The Control Panel LCD then goes black and then clear. The POST version displays on the LCD and waits two seconds.

During this time the operator can press the Back button to bypass the remaining POST test.

6. Low level Power-On Self Test (POST) diagnostics are performed. The

Control Panel displays status messages as each sub-test is performed. This test takes about 8 seconds. All LEDs are off during the test. If POST diagnostics pass, the Control Panel displays the Xerox logo and turns on the green LED.

If the test detects an error, the error message displays on the LCD and the printer flashes the LEDs with a repeating error code pattern.

7. The VxWorks operating system is initialized and engine code is started.

This takes about 15 seconds. The Xerox logo is displayed.

8. Print Engine Self Test (PEST) diagnostics are then performed. These test

the heaters, clutches, motors and solenoids. As each clutch is tested, you hear clicking with four high tones as each motor is tested. This test takes about 30 seconds.

How to use the solutions in this document To resolve the issue, try each solution in this document, and then use the steps in this section to print a self-test report. This step determines if the product hardware functions correctly. When you have resolved the issue, and the product successfully prints a self-test report, there is no need to continue troubleshooting. Print a self-test page Follow these steps to print a self-test report.

1. Load plain paper in the paper tray.
2. Press the Power button ( ) to turn on the product.
3. Press and hold the Power button ( ).
4. Press the Resume button ( ) four times. The self-test page prints.

IMPORTANT : Try to print a self-test report after every solution even if the solution resolves the issue.

try to reinstall black cartridge ,and clean contact as the follow picture
if still the problem try the next step
1. Unplug the power cable from printer while the printer is powered on.

2. Press and hold Plus (#) and 6 while plugging in the power cord. This will perform a maintenance cycle. I did this twice but no joy. BUT THE THIRD TIME WORKED!!!

Print a self test by pressing "Setup" and then 1, then 1 again.

Reason behind "offline" is communication between printer & system got interrupted,check weather printer is restarting it self ? check with another USB cable,check firm ware if low version up load it, check printer USB port on formatter is it dry solder? if no check the voltage in connector 17, between pin 1 & 20 is it 5V? if not check power supply connector J201 pin1, is it 5V? if not replace Power supply PCA.
If 5V showing between pin 1& 20 replace formatter.

Mean engine test is OK, so no problem with DC controller, reset display cable remain same? replace formatter assm.. Its not related with drivers issue.

Go to "Printers and Faxes" in the "Control Panel" and check to see if your printer shows any documents waiting to be printed, Cancel these documents and Right click your printer icon
select "Properties" and select "Print Test Page" to test your connection...For varies reasons documents sometimes fail to print and the printer queue backs up

Step one: Perform a partial reset

1. Disconnect the power cord from the product.
2. Press and hold # and 3 while reconnecting the power cord to the product, and then release both buttons.
3. Try making a color copy by pressing the Start Copy Color button on the product control panel.
   

Step two: Perform a semi-full reset CAUTION: Performing a semi-full reset deletes any saved phone numbers on the product.

1. Disconnect the power cord from the product.
2. Press and hold # and 6 while reconnecting the power cord to the product, and then release both buttons.
3. Try making a color copy by pressing the Start Copy Color button on the product control panel.

with the power off hold down the select and return buttons while holding power up till the printer comes to performing self test wait until the config menu show in the control panel. toggle the right arrow till you get to panel menu hit select use the right arrow to change to enable hit select it should say setting saved and your problem is gone

Usually the serial number can be found either in the back or in the bottom of the printer.

If your printer is working you can print a self diagnostic page which would have the serial number.

To print the Self-Test Diagnostic Page
• Device control panel: Press Setup, select Print Report, select Self-Test Report,
and then press OK.
• Toolbox (Windows): Click the Services tab, and then click Print a Test Page.