76
F238006
Section 5 Service Procedures
To reduce the risk of electrical shock, fire, explosion, serious injury or death:
• Disconnect electrical power to the washer-extractor before servicing it.
• Close the gas shut-off valve to the washer-extractor (when applicable) before servicing it.
• Never start the washer-extractor with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the washer-extractor is properly grounded.
W461R1
WARNING
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
26. COMPUTER BOARD REMOVAL AND
INSTALLATION
Note how the wiring is routed before removing
any components and follow the original routing
during reinstallation.
a. Turn off power to the machine.
b. Remove the two screws at the top rear edge of
the module top cover and slide the cover back
slightly until it can be removed. Remove the
module top cover.
c. Remove the nut attaching the metal cover that
covers the computer board and remove the
cover.
d. Carefully disconnect the 16-conductor ribbon
cable plug near the battery at J3, refer to
Figure 4. Note the position of the red stripe to
properly reinstall the cable. Use care when
reconnecting this plug to avoid bending pins.
Make sure that the pins are aligned with the
sockets in the board before carefully seating the
plug into the socket.
e. Disconnect the 26-conductor ribbon cable
connector at J1 by pushing on the “ears,” refer
to Figure 6.
f. Disconnect the remaining 16-conductor ribbon
cable connector at J2 (refer to Figure 4) by
pushing on the “ears.” Refer to Figure 6.
g. Label and disconnect the two wires from the
keymode switch to the computer board at the
terminals marked “write inhibit.”
h. Label and disconnect the ground connection at
the terminal marked “GND.”
i. Remove the four nuts at the computer board
corners and move the board far enough away
from its mounting position to unplug and
remove the fiber optic cables at the bottom of
the board. Remove the board.
j. Board installation is the reverse of removal.
Carefully align the plugs with the receptacles
and push them gently into place. Refer to
Figure 7.
NOTE: Never force a plug into a receptacle. This
can result in damage to the controls.
27. FUSE BOARD REMOVAL AND
INSTALLATION
Note how the wiring is routed before removing
any components and follow the original routing
during reinstallation.
a. Turn off power to the machine.
b. Remove the two screws at the top rear edge of
the module cover and slide the cover back
slightly until it can be removed. Remove the
module top cover.
c. Remove the two clear covers from the board.
Figure 6
Ribbon Cable Disconnect
P136D
U28
T1512
U27
T1512
U26
555
TO INSERT AND REMOVE
FLAT RIBBON CABLE
Figure 7
Aligning Plugs and Connecting
P137D
U28
T1512
U27
T1512
U26
555
RIBBON CABLE PLUG MUST
BE ALIGNED WITH SOCKET