BH750 warm up

[SKTeK315]

What's up everybody. 750 had c4707 laser code. Changed laser, corrected code prob. Now no warm up, no codes. Waited 5 min. No code. Trouble reset for the hell of it. Same. FSR stays cold cwhats going on with this thing ?

[RRodgers]

Be sure you connected all wires back u to the laser unit.

[SKTeK315]

I checked twice. Including the fan motor in front of it tooNeed more help. Fuser not lighting up at all & no code

[RRodgers]

Sure all the doors are closed? Check circut breakers in back? Fuses?

[SKTeK315]

That's what I'm on the way to do. My problem is that it's not coding out. I let it sit for 5 or more min

[RRodgers]

got this from KM's site

Description
Warm-up sequence is stuck at the Konica Minolta logo screen.
Solution
CAUSE: Failed Scanner Driver Board.
SOLUTION: Replace the Scanner Driver Board (p/n 57AA-9090).If the problem persists replace System Control Board CF Assembly (p/n57AE -952 0) and
System Control Board (p/n 57BA -906 1 for a bizhub 600 and p/n 57AA -906 1 for a bizhub 750 ).

Description
'Now Warming Up' message. C-2801 (C2801) may also be indicated and copies may be "gray".
Solution
CAUSE: Dirty or failed Toner Control Sensor Board.
SOLUTION: Check Service Call Counter 28-01 (Maximum Density Correction Error 1) for excessive counts. Clean or replace the Toner Control Sensor Board
(p/n 56AA 9102E).

these might hel

[SKTeK315]

Thanks I'll give it a shot

[SKTeK315]

It goes to norm screen and says "warming up". Not on logo

[jgillilan]

Check your connector on the main body that the fuser plugs into when you slide the adu back in, I have seen those break and cause the same problem

[SKTeK315]

I did. They're fine. Tnx

[Downunder]

Could be the flash cards

[SKTeK315]

Turned out to be, thermal fuse in the fuser. Weird. It's all fixed. I changed the thermal fuse & the laser unit. It's running like a champ. Thanks for all the advise.