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Author Topic: Control Board Schematic for Whirlpool dishwasher 8564544 - 8564547 ?  (Read 435 times)

Offline grcutter

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  • Member Since: Nov 2020
  • Posts: 2

Does anyone out there have the schematic for the control board for the Whirlpool dishwasher model DU1100xtpq3?
The part numbers for this control board are 8564544, 8564545, 8564546, 8564547, and 8546558.  Maybe also AP3775585.

Thanks!

Offline grcutter

  • VIP Member
  • Member Since: Nov 2020
  • Posts: 2
Re: Control Board Schematic for Whirlpool dishwasher 8564544 - 8564547 ?
« Reply #1 on: December 23, 2020, 08:09:32 AM »
I was not able to find a schematic for this board.
I was, however, able to identify most of the major components and am posting them here in case it helps someone else:
The main microcontroller: MC68HC705C9A  by NXP
The serial eeprom: AT24C type from Atmel
LED driver array:  MC1413  by ON Semiconductor
Various triacs on board:   MAC97 by ON Semiconductor, and BTB10 by ST Micro
Zener diodes: 1N4740 from Vishay

There is a small IC on the backside that I could not identify and many 3 terminal devices that look like surface mount transistors.  These components are covered with some epoxy or lamination that makes their part numbers unreadable.