F238006
77
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
d. Disconnect the 26-conductor ribbon cable at
the center of the board (adjacent to the
transformer) by pushing on the “ears.” Refer to
Figure 6.
e. Unplug the “ACH” and “ACN” connectors.
f. Unplug the four-pin connector by grasping and
squeezing the sides. Refer to Figure 9.
g. Label the wires and disconnect the headers J6
and J5 from the output board. Refer to Figure 1.
h. Remove the output board from the nylon
standoffs (that fasten the board to the module)
and remove the board.
i. 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: If the board is being replaced, remove the
R.C. network for installation of the new board.
Refer to Figure 8. Some R.C. networks are not
removable. In these cases, the replacement board
will include a new R.C. network.
28. INTERFACE 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. Label the headers and remove them from the
interface board, refer to Figure 10.
d. Disconnect the 16-conductor ribbon cable plug
at J8 (refer to Figure 10) by pushing on the
“ears.” Refer to Figure 6.
e. Label and disconnect the ground wire at J6.
f. Carefully disconnect the 16-conductor ribbon
cable plug from J1. Refer to Figure 10. Note the
notch on the socket of the ribbon cable. During
installation use this notch as a reference to
connect this plug correctly.
NOTE: Extreme care must be used when
reconnecting this plug to avoid bending pins. Make
sure the pins are aligned with the sockets in the
board before carefully seating the plug into the
socket.
Figure 8
Clear Covers and R.C. Network
Figure 9
Four-Pin Connector
P139D
R.C.
NETWORK
P138D