My thinkpad A31 2653 pc doesn't always properly initiate the the power-on self test (post). Sometimes I press the on but and the initial lights by the power swith come on as normal whether connected to battery or ac power and then nothing else happens. I power off the unit and try again. After a random number of attempts the "post" begins and the machine boots and act normally.

What you describe sounds like a POST (Power-On Self-Test) error code beep sequence. The POST is the initial system test your computer performs when you first turn it on. The code you describe MAY indicate a RAM memory problem, but codes vary from manufacturer to manufacturer, so please check your documentation or check GOOGLE.

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.

If 22 is blinking in the Scanner LCDThe Transparent Materials Adapter (TMA) may be attached incorrectly or is broken.

1. Disconnect the scanner power cord.
2. Disconnect the TMA cord from the scanner.
3. Verify there are no bent or broken pins in the cord plug of the TMA. If the cord has bent or broken pins, it will be necessary to contact HP .
4. Reconnect the TMA cord to the scanner.
5. Perform a self-test on the TMA. Click here for instructions to do a self-test on the TMA (bps05670) .
6. Check that the TMA is properly positioned on the scanner glass; either reposition the TMA in the positioning plate or reposition the positioning plate on the scanner glass.
7. Reconnect the power cord to the scanner.
8. Attempt to scan.

If 22 "The scanner could not scan" displays on the screen and the Transparent Materials Adapter (TMA) is being used

1. Disconnect the scanner power cord.
2. Disconnect the TMA cord from the scanner.
3. Verify there are no bent or broken pins in the cord plug of the TMA. If the cord has bent or broken pins, it will be necessary to contact HP .
4. Reconnect the TMA cord to the scanner.
5. Reconnect the power cord to the scanner.
6. Perform a self-test on the TMA. Click here for instructions to do a self-test on the TMA (bps05670) .
7. Attempt to scan.
8. If the scanner still does not function, follow the instructions for resolving USB initialization and related communication errors (bps03850) .

If 22 "The Scanner could not scan" displays on the screen and the TMA is not being used

1. Disconnect both the scanner power cord and the USB cable.
2. Perform a self-test on the scanner if it has a built in self-test. Click here for instructions on performing a scanner self-test (c00030441) .
3. If the scanner passes the self-test, reconnect the USB cable and attempt to scan. If the scanner fails the self-test, it will be necessary to contact HP.
4. If the scanner still does not function, follow the instructions for resolving USB initialization and related communication errors (bps03850) .

Hi Frank,

Please supply a detailed description of the problem. Give as much details leading up to the problem as you can so that I may understand what's happening.

I'll be waiting for your response.
Randy

Maintenance request code:

The pump counter is near end of life, replace the cleaner kit ASAP.

This is what 0040 means.

Beep codes are used by the BIOS during the POST (Power On Self Test) to report certain initial system errors.

Please follow the following link for troubleshooting:
http://pcsupport.about.com/od/nonworkingcomponent/ht/beepcodestb.htm

You may have a bad system board, but try this first.

Press

Unplug power cord in the rear of the machine

While holding down the ENERGY SAVER key, plug in power cord

Scroll down to SHIPMENT SET

Press SET

Press 2

Wait for the machine to initialize.

First you get POST (power on self test) where hardware is initialized, then any initialization of RAID if it is installed and enabled, then verifying DMI pool data, where it gets boot information from the boot device specified in the cmos, then the operating system loads.

Hi robertkbrown...you may want to try to following steps.....good luck my friend...chris If ?LOC DOOR? is flashing in the display of your range or oven, and the self-clean cycle has not been selected, follow the steps below to reset your control: Motorized Switch 1. With the door open, locate the door jamb switch on the face of the oven. It will look like a small black post or dowel. 2. Push it in until the oven cavity light goes off, indicating that the oven believes the door is closed. 3. While you hold the door jamb switch in this position, complete the following steps. 4. Press the Clean pad, wait 10 seconds. 5. When the cycle initiates, press the clear/off or cancel pad immediately to cancel it. 6. Wait 10 seconds for the display to clear. 7. The door should unlock and there should not be a need for service. Manual Switch 1. Press the Clean pad. 2. Close the door. 3. Slide the latch to lock the door. 4. Hit the cancel button immediately. 5. Unlock the door.