[Dead] CM 6030/6040 Display? Formatter? DC Controller?

[TonerApe]

Looking for a little help here before my best client rips my naughty parts off and staples them to a wall.

Working on a CM6040 and had removed the formatter board in order to service some other parts. Reassembled and reinserted the Formatter and ended up with a blank display. Ran all the cables and reseated everything, tested power going to the formatter and all seemed okay. I decided to try to confirm problem is on the Formatter so I plugged it into another unit my client had (and was in perfect working order). Got the same result, dead screen.

Now, the "shit your pants" moment is when I reinstalled the working unit's formatter and it came up with a dead display as well. I am thinking that the DC controller is going to have to be replaced on both units but I was wondering if anyone else has come across this.

Thanks.

[prntrfxr]

Re: CM 6030/6040 Display? Formatter? DC Controller?

I've not had this problem with the CM6030/6040, but I've had similar issues. My experience is:

Blank display, no backlight = firmware dimm (if installed) bad. (if it is embedded firmware the formatter's bad)
Blank display, backlight on = memory dimm

If the above doesn't work replace all 3.

Check your connection to DC controller. Sometimes they look connected and aren't. Make sure plugged into wall outlet not surge protector. Check connections to display panel.

Print engine test to make sure dc controller is good

[TonerApe]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Hey Prntrfxr

Thus far I have done the following

• remove and reseat formatter cage
• remove and reseat cable to display and reseat on board
• tested P/S to ensure 24V DC is steady
• both units are installed on GFI circuits with proper 40A commercial grade breakers
• both unit print their engine tests properly

What I can't figure out is why the simple act of removing the formatter from the one unit and installing in the second could cause the second unit to react in the same manner as the first when the second unit's formatter is reinstalled after the test.

[Wild Bill]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Just a thought; Contrast-adjustment dial Turn the dial to adjust the contrast of the touchscreen display for your
viewing angle.

having 2 do this makes this seem impossible

[Wild Bill]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Power-on troubleshooting overview
Turn on the product power. If the control-panel display remains blank, random patterns display, or
asterisks remain on the control-panel display, perform power-on checks to locate the cause of the
problem.
During normal operation, the main cooling fan begins to spin briefly after the product power is turned
on. Place your hand over the holes in the plastic cover that is connected to the rear cover and opposite
of the formatter. If the fan is operating, you will feel air passing out of the product. You can also lean
close to the product and hear the fan operating. When this fan is operational, the DC side of the power
supply is functioning correctly.
After the fan is operating, the main motor turns on (unless the top cover is open, a jam condition is
sensed, or the paper-path sensors are damaged). You should be able to visually and audibly determine
if the main motor is turned on.
If the fan and main motor are operating correctly, the next troubleshooting step is to isolate print engine,
formatter, and control-panel problems. Perform an engine test (see Engine-test button on page 583).
If the formatter is damaged, it might interfere with the engine test. If the page does not print, try removing
the formatter and then performing the engine test again. If the engine test is then successful, the problem
is almost certainly with the formatter, the control panel, or the cable that connects them.
If the control panel is blank when you turn on the product, check the following items:
1. Make sure that the product is plugged directly into an active electrical outlet (not a power strip) that
delivers the correct voltage. If an error 50.05 occurs, the product is configured for a different voltage
that it is connected to.
2. Make sure that the power switch is in the on position.
3. Make sure that the fan runs briefly, which indicates that the power supply is operational.
4. Make sure that the control-panel display wire harness is connected. See Control panel
on page 364.
5. Make sure that the formatter is seated and operating correctly.
6. Remove any HP Jetdirect or other EIO cards, and then try to turn the product on again.


NOTE: If the control-panel display is blank, but the main cooling fan runs briefly after the product power
is turned on, try printing an page to determine whether the problem is with the control-panel display,
formatter, or other product components. See Engine-test button on page 583.
428

[TonerApe]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Thanks, I have the service manual and have done the contrast thing as well. The touch display will flash briefly at power up and then remain dark, none of the LEDs cycle during the startup but all fans and motors go through their processes to get to a ready state. There is no indication of network activity on either unit, no LED turned on or flashing at the network port.

[TonerApe]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Also, the unit will not process jobs sent over the network. Both units have the onboard NIC

[Wild Bill]

Re: CM 6030/6040 Display? Formatter? DC Controller?

I'm sorry I have limited exp. with this product but I feel for you and would like to see you get this problem resolved.
Have you tried disconnecting Hard drive? Assesories

[prntrfxr]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Did you try swapping the display from the other unit to the troublesome one. You're really in a good position if you can swap parts from one machine to another, but be careful. Things that are wrong with the first unit can transfer itself to the second. I'm leaning toward DC controller, but if it is it would be the first time I've seen that particular problem being caused by that part. Do the engine test, swap the display, and then get to the rat killin'.

[Wild Bill]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Let us know what resolves this. I am interested because we have some in the field.

[mabawser]

Re: CM 6030/6040 Display? Formatter? DC Controller?

had this last week and as mentioned it was the dimm on the formatter board causing blank screen. ordered up and sorted, all ok

[ucinn]

Re: CM 6030/6040 Display? Formatter? DC Controller?

I've had a formatter do this.. I have a formatter right now that just hangs up on 6/6B right now... these hP's suck as far as electronics go. Just looking at them the wrong way will cause a formatter or controller to go. I cringe everytime I have to turn one off to reset a counter, you never know if it will boot back up properly. If it's blank with no fan, then it's usually the dc controller.

[TonerApe]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Well, here is an update from the land where Rage reigns supreme.

Received the DC controller board and installed it in the one machine that was working until I put the non-working machine's formatter into it and killed it. No Joy. What is worse now, despite having triple checked all the connections is that the second machine has developed the unpleasant new symptom of not printing the Engine Test anymore.

I have brought the original machine back to my office and am currently contemplating whether I should disassemble the unit with a screwdriver or a sledgehammer ...

Will keep you updated.

[TonerApe]

Re: CM 6030/6040 Display? Formatter? DC Controller?

Well, when all is said and done I am stuck at Formatter, but I still can't figure out why the good formatter failed to work once it was reinstalled in the working unit.

Oh, and to make matters worse, the client told me that it was "... irresponsible and unprofessional of me to test the board in that manner. I should have tested it on a unit in my office."

How do you even respond to that?

[TonerApe]

Re: CM 6030/6040 Display? Formatter? DC Controller?

<Insert extremely vulgar and unbelievably inappropriate string of obscenities here>

New Formatter, no luck

Unit does not have removeable firmware

any suggestions?

BTW, I am out $2000 on parts at this point.