Service Manual
105
INTERNAL COM.
40:1–40:10 I/O INTERLOCK Axxx
This error code will be shown if the control system detects that the input IO INTERLOCK is not active. I/O unit desig-
nation, Axxx, that is shown in the error description is according to electric schematics and electrical component list.
Recommended actions:
1. Check that door is actually locked.
2. Check DLCU status in service mode for more information on possible causes.
3. Check P-bus connectors on I/O board for present interlock signal.
4. Check that D-bus connector is fitted correctly with regards to the rib on the connector and the slot in the plastic
cover of the I/O board.
40:11–40:20 I/O COMMUNICATION Axxx
The error code is shown if the control system can not communicate with one or several I/O units on D-bus. I/O unit
designation, Axxx, that is shown in the error description is according to electric schematics and electrical component
list. Errors are related to the D-Bus communication port between CPU and the different I/O units in the machine. The
error code is shown if the control system has lost communication with one or more I/O units for a certain time.
If there is communication between the I/O unit and control system the LED next to the service button will flash.
If there is no communication to the I/O unit but power, the LED will light when the button is pressed on the I/O board
(all I/O boards except for I/O unit type 6).
Possible causes:
• Mistake when configurating I/O unit adress at set up. Button on wrong I/O unit pressed during config.
• Two or more I/O units have the same I/O adressing.
• Bad or intermittent contact in D-Bus wiring between I/O units and CPU or between I/O units.
• Squeezed or shorted D-bus cables (shorted to ground).
• An old version of an I/O unit is fitted in the machine that do not support Compass Pro. Check part number com-
pared to original I/O board or spare parts list.
Recommended actions:
1. Check that all I/O units are configured in I/O CONFIGURATION menu when the machine is in service mode. Alter-
natively use Common Service Tool to get a overview of the I/O unit configuration. Use the electric schematic to
find correct I/O board to address.
2. If all I/O units are present in the list, check the LED as above, harness, connectors and functions by reading the
electrical schematic.
3. Check that the I/O units fitted in the machine supports Compass Pro. Check part number compared to original I/O
board or spare parts list.
4. Update the machine software to latest available version.
40:21 I/O COMMUNICATION
Only on Barrier washer.
The error code is activated if the control system no longer can communicate with Barrier I/O unit or if the communica-
tion is intermittent. I/O unit designation that is shown in the error description is according to electric schematics and
electrical component list.
Barrier I/O board is connected to M-COM port on CPU in paralell with the MCU for drum. Electrical interface is RS-
485. The error code is shown if the control system has lost or only have intermittent communication with the I/O unit.
Possible causes:
• Bad contact in harness or connectors between CPU/MCU and I/O unit.
• The I/O board is incorrectly configured on DIP switches (SW210 and SW202)
Recommended actions:
1. Check wiring, connections configuration of I/O unit according to service manual.
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