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Power al1d Electronics
180
POWER SUPPLY
Removal and Replacement
1.
Power off.
2.
Disconnect the line cord.
3.
Remove the printer back cover (110).
4.
Loosen the shipping screws
II
and
II
seven
turns. You may leave
t~em
loose except for
shipping.
5.
Loosen the front clamping screws
II
and
III
one-half turn.
6.
Loosen the rear clamping screws
B
and
II
enough to clear the stops
II
and
II.
7.
Disconnect Jl
fJ.
8.
Remove the TBl wiresEJ.
9.
Disconnect C1A1D.
10.
Remove the line cord from the terminal blockD.
(if a line filter is present, remove phase A from A,
neutral from B (189).
11.
Support the power supply and remove it from the
printer by pulling as shown in the drawing.
12.
Reinstall the power supply by reversing this
procedure.
Ripple Level Check
The peak-to-peak output ripple level· should be less
than 3
%
of the respective DC voltage when measured
with an oscilloscope.
180
Remove, Replace,
Adjust
•
Position 1 of TB 1
Power Supply
(top view)
...
Pull Here
IJ
TB2~
L---=r
Fan
rl
L
Maintenance
5256 MIM
1-57
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