dt_trader

asked Jun 6, 2007 at 2:47pm
Hp HP LaserJet 1200

HP Laserjet 1200

Printer
HP Laserjet 1200
Connected to Windows XP MCE machine via USB port

Problem:
Printer not responding to print command

Light status on the front panel
All 3 linghts stays on solid.(not flashing)

printer makes normal starting noise at start up and then
three linghts alternates and then goes solid.

tia for any help... HP support is no help
Lets make this real simple. Remove the left side cover and remove and reseat all the connectors going to the small electronics board towards the front. Make sure the power is off and make sure you do a good job with the ribbon connector at the top of the board. Do these things first and then report back if it does not work.
by dmzcompute on Jun 6, 2007 at 3:46pm Add comment
Ok I tried what you suggested. I came up with the same results.
All 3 lights stays on solid.

What is next ?
Thanks.
DT - dt_trader
WHen the three lights come on solid then push and hold the button and tell us what lights are lit.
by Stephen on Jun 6, 2007 at 2:54pm Add comment
while pushing and holding the power button as suggested...
small green and orange light stays on solid but the big Power light goes out.

thanks
by dt_trader on Jun 6, 2007 at 2:55pm Add comment
Secondary pattern two small lights on, otherwise known as "Main Motor Error".

Read this:

http://www.fixyourownprinter.com/forums/laser/12345#4
by Stephen on Jun 6, 2007 at 2:58pm Add comment
but I do hear the motor noise when the printer power cord is inserted. - dt_trader
what i mean is .. when at the time of initial plug in .. it does make normal noise
by dt_trader on Jun 6, 2007 at 3:05pm Add comment
Did you read the thread I refered you to?

It listed 3 possible causes:

Motor

ECU (Main Board on the bottom)

Laser/Scanner

the only way to proceed is to swap out parts.

Since you hear the motor turning at power on it seems to be working.

WHen you initiate a print sequence the main motor should start turning, then in a second or two the scanner motor should wind up...

Do you hear the scanner motor?
by Anonymous on Jun 6, 2007 at 3:21pm Add comment
when print job is initiated, i hear no noise at all
by dt_trader on Jun 6, 2007 at 3:24pm Add comment
If the main motor turns at power on, but not when you print a page, then I'd suspect the ECU.

Try printing without using a PC.

Disconnect the I/O cable.

Power off the printer, (unplug).

Wait 5 seconds.

Power back on.

After printer gets to ready state push and release the button.
by Stephen on Jun 6, 2007 at 3:28pm Add comment
I tried printing without PC after disconnecting the I/O cable as suggested but i am getting the same results.

Normal turn on noise at the start up then all three lights alternates and then goes all steady ON.

when big green button is pushed and released .... nothing happens.. no motor noise... nothing.

thanks - Anonymous
I tried printing without PC after disconnecting the I/O cable as suggested but i am getting the same results.

Normal turn on noise at the start up then all three lights alternates and then goes all steady ON.

when big green button is pushed and released .... nothing happens.. no motor noise... nothing.

thanks
- dt_trader
Did you bother to read my post. Do what I say since in the over 20 of these I have had with the same error over the years most of them worked after doing what I said. Until you understand that all three lights on is a fatal error and nothing will happen after one until the printer is turned off and then back on and the same error will come up again unless the condition which causes it is fixed. My suggestion fixes it most of the time, but not always but you will never know if you do not bother to try. The cover just pops off and the cables come out and go back in real easy. You seem to be looking for a solution other then what we are telling you. For what reason I do not know. The link Stephen posted also gave the same answer as I am giving to you.
by dmzcompute on Jun 6, 2007 at 5:59pm Add comment
Trust me... I am not ignoring what you suggested. I am looking for my static strap which I have misplaced. I am sure I should be wearing a static strap while handling such electronic components.

I will try as soon as I find my static strap and post the results.
Sorry for the delay...

Thanks
DT
by dt_trader on Jun 6, 2007 at 6:13pm Add comment
You can reseat the cables without wearin' a wrist strap.

Unplug the power cable before reseatin'.

Ground yourself to the frame, just put a finger on it fer a second, then reseat away.
by unknown on Jun 6, 2007 at 6:40pm Add comment
Next would be to take off the top cover and reseat the cable going to the laser/scanner assembly. The ribbon cable from the side is the main one. If that does not work then the most likely cause is a bad laser/scanner assembly. Even thought the error is a motor error since the main motor does turn I think it still has something to do with the laser/scanner assembly.
by dmzcompute on Jun 6, 2007 at 7:19pm Add comment
Cool ! I will try to remove the top cover and reseat the ribbon cable going to laser/scanner assembly.

If that dont work..... How hard is it to replace the laser/scanner assembly?
Is there a step by step instructions on how to do that ???
Help greatly appriciated...

thanks,
DT
by dt_trader on Jun 6, 2007 at 7:27pm Add comment
The light patten is the laser/scanner assembly but not the motor.
Replace the laser/scanner assembly will fix the problem.
I myself have fixed some of them.

It's easy to replace the laser/scanner assembly ,but have to find another one in good condition first.
Maybe from eBay or somewhere else.

I tried more than four times to use HP 1000's laser/scanner assembly instead and it worked too.
If not, exchange the IC and the Motor from each other laser/scanner assembly, it always works.

Try it and good luck.

ps. Sorry for posting two times, maybe. - healthup
The light patten is the laser/scanner assembly but not the motor.
Replace the laser/scanner assembly will fix the problem.
I myself have fixed some of them.

It's easy to replace the laser/scanner assembly ,but have to find another one in good condition first.
Maybe from eBay or somewhere else.

I tried more than four times to use HP 1000's laser/scanner assembly instead and it worked too.
If not, exchange the IC and the Motor from each other laser/scanner assembly, it always works.

Try it and good luck.
by healthup on Jun 7, 2007 at 2:16am Add comment