Hello, I was recently given a Howtek 4500 scanner, complete with drum, mounting fluids, tape, etc. It's been in storage for probably 4 to 5 years and I'm trying to get it running again. Unfortunately I'm having a few problems...

So far I've successfully setup a PC complete with SilverFast and Trident to command the scanner. But when I hit pre-scan, the scanner will spin up, turn on the reflective or transmissive light (which ever I choose), read the drum for a couple of seconds, then stop with the scanner display saying "Check Lumen". After awhile of sitting like that, the drum will then return to it's rest position with the display stating "Error F702". So far, I've replaced the lights, the drive belt, and completely dissembled and reassembled the motherboard. But it still gives "Error F702".

Does anyone have ideas? I would love to have this machine scan all my 4x5's!

I also saw in a previous thread that the service manual is floating around. If someone could send me a copy, I would be very grateful.