Hoshizaki IM-100, Service Manual

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2. CONTROLLER BOARD
Note: Refer to the “Hoshizaki IM Cuber Controller Board Service Manual” (E1AX-676) for
the new Controller Board used for the later models (from Auxiliary Code “E-1”).
IMPORTANT
If receiving a service call, ask the user to turn off the power to the icemaker and
turn it on again, while watching the icemaker. This will reset the controller, and
in some cases normal operation will resume.
CAUTION
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 reverse side of the Controller Board and tiny electronic
devices on it.
4. Do not repair the electronic devices and parts on the Controller Board in the
field. Replace the whole board assembly when it fails.
5. To get static free, always touch the metal part of the icemaker before servicing.
Electrostatic Discharge will cause severe damage to the Controller Board.
6. The Signal Ground Wire must be connected to the Shield Plate when replacing
the Controller Board after service.
7. The Controller Board is fragile. Handle with care.
* Do not drop the board on the floor.
* Make sure that the board is placed correctly into the guides in the Control
Box. Mis-alignment could cause breakage when replacing the Control Box
Cover.
* Handle the board by the edges only. Do not touch the electric parts and
devices except the Transformer.