TIMER CYCLE CHART
COMPONENT OPERATION
AND REPAIR
SAFETY PRECATIONS
Always turn off the electric power supply before servicing any electrical component, making ohmmeter checks, or replacing any parts.
All voltage checks should be made with a voltmeter having a full scale range of 130 volts or higher.
After service is completed, be sure all
CIRCUIT BOARD
With the circuit board, user selects the various cleaning cycles of the dishwasher with press the button. The circuit board controls all the electrical functions of the dishwasher in all stages of each cycle. All functions can be traced on the chart. Diagram provided in this service manual.
To Test Circuit Board
If the circuit board is suspected of faulty operation, reference chart and electrical schematic diagram and proceed as follows:
1.Index the circuit board to all of the increment of the cycle, each of the indicators light should is bright.
2.Index the circuit board to one of the increment of the cycle, which is a drain period.
3.If the pump motor fails to operate during the first cycle increment, check for power at the pump motor connector block, if there is no power check the door latch switch, if there is power, check the pump motor as described in this section.
4.If a component controlled by the circuit board fails to function as the circuit board advances through the cycle, check for voltage at the circuit board terminals. If the check voltage is supplied to the component, check the component as described in this section.
Continuity through circuit board contacts, other controls, and wires can also be checked with an ohmmeter with electrical power disconnected.
If the circuit boards contacts fail to close in the sequence shown on the chart are burned (have resistance measurable with an ohmmeter), or if circuit
board does not run automatically, replace the circuit board. To Replace Circuit Board
1.Disconnect dishwasher from electrical supply.
2.Remove the power button.
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