
FIELD REPAIR/SERVICE
BLANKETROL III, Model 233
OPERATION AND TECHNICAL MANUAL
Page 89 of 131
If work is to be done with the microprocessor board, the membrane control panel, or anything
related to the top assembly, disconnect the cables from the microprocessor board. Go to Section
(5-2.4.).
5-2.3. Removing the Left Side Enclosure Panel
A.
Remove the rear enclosure panel and the top of the unit. See Sections 5-2.1 and 5-
2.2.
B.
Remove the two Phillips screws that secure the back of the left side enclosure panel
and set to the side.
C.
Push the rear
portion of the left side enclosure panel out so it is clear of the device’s
frame. Then push the panel toward the front of the device so that it detaches from
the device. A rubber mallet may be needed to detach the panel from the device.
D.
Set the left side enclosure panel to the side.
E.
Installation is reverse of removal.
5-2.4. Disconnecting the Cables from the Microprocessor Board
A.
Remove the top of the unit per Section 5-2.2.
B.
Tilt the front edge of the top of the unit back, rotate and stably rest the top so that the
fill lid is on the stainless steel reservoir top.
NOTE: DO NOT BEND ANY OF THE TERMINALS.
C.
Locate the following connectors on the microprocessor board and disconnect them
by pinching the sides to disengage the connector lock, as required:
WARNING
Always
unplug the unit
before accessing internal components during service.
Failure to unplug the unit could result in electric shock.
WARNING
Always
unplug the unit
before accessing internal components during service.
Failure to unplug the unit could result in electric shock.
Working with electronic boards, plugs, and cables requires delicate handling. Proper
electrostatic discharge (ESD)
procedures should be followed during replacement
of any electronic board.
Failure to do so may result in damage to the board.