Color LJ 3550

[copyman]

Printing black very light. It is gray instead of black. All other colors are good. Tried new OEM toner & changed the blk dev clutch but did not help.

Not sure if this is relevant but printer seems to be running slower.

Any other suggestions? Thanks in advance

[mjunkaged]

First, check high voltage contacts at the sides of carts.
Then it's probably going to be the HV board. I recently had one with the same exact problem, only on Cyan.
The reason is that it's a HUGE HV board on the side that delivers voltages to all the carts.

You can call partsnow tech support to confirm
www.partsnow.com
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