Hotpoint Aquarius WD420P Service Information page 22

Three variations of Eeprom can be found or used on Power Boards:
1. Production Power Boards have a soldered Eeprom and is not replaceable.
2. Service Power Boards have a socket and the Eeprom is a separate part.
3. Blank Eeproms.
All types can be programmed or re-programmed via Emit, using a USB lead, Hardware Key and the
relevant Eeprom Writer software. Certain models which have a combined Power and Display board
also require an Adapter fitted between the Hardware Key and the Power Board.
Information can be found in Service Manual 5407177 and Quick Guide 5407200.
The Main Components are shown below.
Fig. A
Fig. A C00115587 Hardware Key
Fig. B C00116135 Low End Adapter
Fig. C 5600261 USB Cable
A Hardware Key Pin Repair Kit is also available which contains five pins. Part Number C00114723.
Two versions of a diagnostic programme are available to use after an Eeprom has been replaced or
programmed and for general fault finding. Connection to the appliance is the same as for Eeprom
Writer.
1. Washing Machine Doctor 1 for Evo 1 based appliances.
2. Washing Machine Doctor 2 for Evo 2 based appliances.
Information can be found in Service Manuals 5407180 and 5407182 respectively.
Note: This version of the Hardware Key, Eeprom Writer and Washing Machine Doctor
programmes are only available to Indesit Company Engineers.
Pre-programmed Eeproms and Service socket boards are available for repairs and Spare
Parts.
EEPROMS & DIAGNOSTICS
DIAGNOSTICS
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