Says ready to print but does not print. Have restarted it but he initial page does not print either

Usually a failed formatter is the problem on smaller printers where they will not come to ready. Try disconnecting any data cables going from your computer to your printer and restart. If it comes to ready, you might have a corrupted print job stuck in the print spooler. If it does not come to ready when not connected to a computer then the formatter is done.

Initializing means that the printer is starting up and getting all functions ready such as fax, print engine, scanner. If your printer is freezing with just initializing on the screen then there is a problem. If you have added any extra memory to the printer remove and try to restart. Most common failure is the formatter itself.

If you get a bunch of meaningless symbols on the page the usual causes are a corrupt or wrong print driver, a bad communication cable or a failed formatter or possibly a print job stuck in a queue on the computer that you connected the printer to (pending jobs often corrupt when you reconnect your printer). Unplug the parallel or network cable from the printer and restart and then try to print the configuration page. If it prints then plug in the communication cable and try printing again. Still bad after that reinstall the printer driver. If a fresh driver does not work, try a different cable.

Since you are using the USB-to-serial converter, you need to select the serial interface in the printer driver installation.

1. Uninstall the driver in Control Panel > Add or remove programs
2. Restart the computer
3. Install the printer driver again, this time select serial in the interface list
4. Set the properties for the serial port to 9600 for the data rate
5. Print a test page!

Here is a full story

HP LaserJet Professional M1130/M1210 MFP - Interpret control-panel light patterns (M1130 Series only) Interpret control-panel light patterns (M1130 Series only) If the product requires attention, an error code appears on the control-panel display. Status-light legend Symbol for "light off" Symbol for "light on" Symbol for "light blinking" Control-panel light patterns Light status Error code State of the product Action All lights are off.

The product is turned off. Press the power button to turn on the product. Ready and attention lights blink.

The status lights cycle during the formatter initialization period or when the product is processing a cleaning page. No action is required. Wait for the initialization period to end. The product should enter the ready state when the initialization period is finished. Ready light is on.

The product is in the ready state. No action is required. The product is ready to receive a print job. Ready light is blinking.

The product is receiving or processing data. No action is required. The product is receiving or processing a print job. Ready light is blinking slowly.

The product is in low power mode. No action is required. Attention light is blinking.

E0 Paper is jammed in the product. Clear the jam. E1 The input tray is empty. Load the tray. E2 A door is open Verify that the print-cartridge door is fully closed. E4 The product memory is full The job is too complex for the product to print. Simplify the job, or divide it into multiple files. E5 The product did not pick up paper from the tray. You might need to clean or replace the pickup roller. H0 The product is in manual-feed mode. Load the correct paper type and size into the input tray. H1 The product is processing a manual duplex job. Load the pages into the input tray to print the second sides. The attention and toner lights are blinking.

E3 The print cartridge is missing or is not installed correctly. Install the print cartridge. The toner light is on.

The print cartridge has reached the end of its estimated useful life. When the supply has reached this condition, the HP Premium Protection warranty for that supply has ended. You do not need to replace the print cartridge at this time unless print quality is no longer acceptable. Attention light is blinking, and ready light is on.

The product has experienced a continual error from which it will recover on its own. If the recovery is successful, the product continues to the processing data state and completes the job.

If the recovery is unsuccessful, the product continues to the continuable error state. Try removing any media from the media path and turning the product power off, and then on again. The attention and ready lights are on.

E6

E7

E8

E9 The product has experienced a fatal error from which it cannot recover.

1. Turn off the product or disconnect the power cord from the product.
2. Wait 30 seconds, and then turn on the product or reconnect the power cord to the product.
3. Wait for the product to initialize.

If the error persists, contact HP customer support

There are 3 solenoids that can cause this. Two of them are easy to get to and the third is in the back behind the circuit board. Here is a link that will show you how to fix it. There is one under the fan.

https://www.youtube.com/watch?v=4n7cIiyrk_Y

ATTENTION light(triangle): Indicates that the print-cartridge door is open, print cartridge is missing, and other errors.

If ATTENTION and READY light is blinking:

Printer initialization
The printer is initializing.
No action is necessary.

Cleaning mode
A cleaning page is printing.
Wait until the cleaning page has finished and the printer is in the Ready state.
This could take up to two minutes.

If ATTENTION and READY light is on:

Fatal error
Turn off the printer, and then unplug the printer power cord for 30 minutes.
Plug the printer power cord into the power outlet, and then turn the printer on.
If the error persists, replace the printer.

If ATTENTION light is blinking and READY light is off:

1. Attention: door open, no print cartridge, or media jam
   

The printer is in an error state that requires operator intervention.
Check the following:
? The print cartridge door must be completely closed.
? The print cartridge is correctly installed.
? There is no media jam.

2. Out of memoryThe printer is out of memory.
The page you are printing might be too complex for the printer's memory capacity.
Try lowering the resolution.

Cold reset
A cold reset changes most system parameters in NVRAM to the factory defaults. However, unlike NVRAM inititialization, a cold reset does not reset the page count, the paper tray sizes, language, or formatter number.
Note If an HP Jetdirect card is installed, remove it before performing a cold reset. Otherwise, the procedure will also reset all the HP Jetdirect settings as well as the printer settings.
To perform a cold reset
1 Turn the printer off.
2 Press and hold down the GO button.
3 Turn the printer on, and continue to hold the GO button for at least 5 seconds, but not longer than 15 seconds. During this process, the Attention LED will turn on.
4 Release the GO button.
Note If both the Attention and the Ready LEDs turn on before you release the GO button, you must start the procedure again with step 1.
5 The printer's LEDs will begin cycling. The cold-reset process will
run until completion, and the printer will return to the ready state.

If not work, tris this

NVRAM initialization

CAUTION Only perform the following procedure if absolutely necessary.
Performing an NVRAM initialization resets some parameters that cannot be restored later.
NVRAM initialization sets all default variables stored in NVRAM back to factory default values or to a default ROM value, depending on the variable. It also performs a system reset.

NVRAM initialization resets the following:

• all menu settings to factory default values

• factory settings such as formatter number, page counts, and factory paper settings
  

To perform NVRAM initialization
1 Turn the printer off.
2 Press and hold down the GO button.
3 Turn the printer on, and continue to hold the GO button for at least 20 seconds. During this process, the GO button, Attention, and Ready LEDs will each turn on.
4 Release the GO button.
5 The printer LEDs will begin cycling. The NVRAM-unit process will run until the printer is in the ready state.

To check the light Pattern of your printer

Click on Light and Error HP Laser jet 1012 Printer

Check the error details from the above link

Condition of the printer Action/Description Ready

The printer is ready to print. No action is necessary. Processing

The printer is receiving or processing data. Wait for the job to print. Processing...(job name) Ready LED is blinking.

This message is displayed while the printer is processing a current job, but has not begun to pick pages. Processing...(job name) From Tray XX Ready LED is blinking.

This message comes up for any job, once the printer starts to pick paper. Manual Feed or Continuable Error

The printer is attempting to Manual feed, media is not loaded in the paper tray, media loaded is the wrong size or type. Verify that the correct media is loaded.

Press and release the GO button to continue printing. Out of memory

The printer is out of memory. The page you are printing might be too complex for the printers memory capacity. Try lowering the resolution. See Understanding print quality settings for more information. Door open, media out, no print cartridge, or media jam

The printer is in an error state that requires operator intervention or help. Check the following:

• The print cartridge door is completely closed.
• Media is loaded.
• The print cartridge is correctly installed in the printer.
• There is no media jam.

Printer initialization

A printer initialization is taking place. No action is necessary. Fatal error

All lights are on.

• Unplug the printer for 30 minutes, and then plug it back in.
• If the printer still has an error, contact HP Support.

All lights are off.

• Verify that the printer is turned on.
• Make sure that there is power.
• Unplug both ends of the power cord, and plug them back in.

Job Cancel

All the LEDs cycle. Canceling...(job name)

The Job Cancel button was pressed and the job is aborted. Power ON

All the LEDs cycle. Checking Paper Path and Checking Printer

This only occurs at power up. Cleaning mode/Engine test

A cleaning page or engine test page is printing.

All the LEDs cycle. Cleaning Page prints

Wait until the cleaning page is finished printing and the printer is in Ready mode. This could take up to two minutes.

Wait until the engine test page is finished printing and the printer is in Ready mode. Clearing Event Log

All the LEDs cycle.

This will happen automatically during an NVRAM Init and a cold reset. No message will be displayed. No Action is Necessary. Power On

Initializing

This occurs when the product is powered on and coming out of EDOS. No Action is Necessary.

To reset the network configuration follow the instructions below:

1. Press the Configuration Page button once.
2. Press the Resume button three times.
3. Wait for about 20 seconds and then press the Power button to turn off the printer.
4. Disconnect the power cord from the printer.
5. Wait for about 20 seconds and then reconnect the power cord.
6. Press the Power button to turn on the printer.

Not sure if this will resolve other issues, but it's the only reset I know of.