Troubleshooting; [A] Instructions For Service Engineer; [B] Checking Controller Board - Hoshizaki DIM-40DE-HC Service Manual

6. TROUBLESHOOTING

If receiving a service call, ask the user to turn off the power to the ice
dispenser and turn it on again, while watching the ice dispenser. This will
reset the controller, and in some cases normal operation will resume.

[a] INSTRUCTIONS FOR SERVICE ENGINEER

1) Check that the icemaker has been earthed properly. If not, the controller board will
not work properly.
2) Do not change wiring and connections, or the controller board will not work properly.
3) Do not touch the electronic devices on the controller board or the back of the
controller board.
4) Do not repair the electronic devices and parts on the controller board in the field
except for the fuse (250V AC, 6.3A, 5mm DIA x 20mm).
5) To get static free, always touch the metal part of the icemaker before servicing.
6) Handle the controller board by the edges only.
7) Do not drop the controller board on the floor.

[b] CHECKING CONTROLLER BOARD

1) Before checking the controller board, check the cube control thermistor and bin
control switch for proper operation. See "BEFORE CHECKING CONTROLLER
BOARD" in the service manual for the applicable model.
2) If the above parts are operating properly, check each part according to "5. [b]
SERVICE DIAGNOSIS".
IMPORTANT
32