4.) To remove the Heat Roller, remove
the front snap ring (opposite the gear
end). Then hold the heat roll bearings
in place in the metal front and rear
frames, slide the roller out of the rear
(geared) end. Keeping the bearing /
sleeve in place will protect the heat roll
from scratching against the metal
frame.
5.) The other pieces… such as the
Pressure Roll and the Exit Roll can
now be removed easily if you need to
do so.
Reassembly is pretty much the same thing in reverse.
FUSER TEMPERATURE ADJUSTMENT:
The fuser’s temperature could need adjusting in some cases on this series. Each fuser
has a sticker on the top of it which is a grid of numbers 0 - 6. The number which is marked
rates the fuser’s “Rank” or heating level. A higher number means a hotter setting is required
to get proper fusing according to the OEM factory test process. The Service Manual
recommends that you set the machine’s Fuser Setting in memory (from the diagnostics) to the
same number as the one marked on the fuser module. Basically though, if the fuser is running
too hot, the paper will tend to curl up or the thermostat may cut off throwing an overheat
message… if the fuser is too cool, then you’ll get partial fusing.
Here is how to adjust the Fuser Temperature if you ever need to: Turn off the machine
and then Enter Diagnostics by holding down the ‘1’ & the ‘3’ buttons while powering on the
machine. Then press the following sequence of buttons: ‘Up’, ‘9’, ‘2’, ‘0’, ‘8’. The current
setting will show up on screen. Then use the ‘Up’ or ‘Down’ buttons to change the value
shown to the value you’d like to try (0-6 is the range). Then press ‘Enter’ and the display will
show “Accepted”. The ‘Up’ button, by the way, looks more like a triangle pointing up… Just
in case that’s not obvious.
The 7042 style does not use this method of entering diagnostics. If you ever want to
adjust the 7042, you’d need to find someone you can borrow or rent two special tools from:
the “7042 Setup Tool” and the“Tech Drum Card”. It is a strange method… the Setup Tool
plugs into the machine and becomes the interface for diagnostic adjustments. That is the only
way to make this adjustment on the 7041, 7042, 4010, or 4011 models.
That should just about do it… pretty easy one really… Oh and as far as parts
availability goes… I have seen the fuser rollers and fuser drive gears out there already…
other parts are likely to surface as time goes on as well. Don’t let these things slip through the
cracks. Happy Repairs to you all !
We’ll have a closer look at a few other good candidates for fuser repairs next month.
I’m thinking maybe the DC332/340/432/440 etc. Sound good?
