Please do look at the Sub Forums that you will find here. These are sections that Mini Lab Help.com has had running for a long time, but do not generate a lot of traffic and contributions.
But please do explore as you will find some really nice nuggets to take home
This is a private and password protected area for Kodak Express members. You will need a password to gain access to this area, and you can get this by sending a PM (private message) to a Moderator, or Admin member.
Print head can release using service software, or manually ( rotate knob using flat screwdriver ) . When released print head can move where you want. During power on print head returns to initial position.
Do not need to discharge. I thought, that board doesn't work at all. If board works and fault is intermittent it can't to help.
All what you can do then try to clean ARCNET sensors ( on PCI-LVDS/ARCNET PCB and on printer control pcb ) . Also can trim ARCNET cable ends ( 90 degrees ) . The best to use special cutters ( for example Omron E39-F4 ) .
It is strange, that have communication error with printer control pcb, but no errors with laser control pcb. Laser control pcb is connected through ARCNET hub, which is on printer control pcb. That means you have ARCNET connection with hub on printer control pcb, laser control pcb, but do not see board, where is hub.
Sometimes this problem can cause ARCNET noise coming from other board, but when you disconnected laser control pcb communication with printer control pcb was not restored. So no communication between PCI-LVDS/ARCNET PCB and on printer control pcb, but have communication between PCI-LVDS/ARCNET PCB and on laser control pcb ( through ARCNET hub, which is on printer control pcb ) .