Checking The Keypad And Keyswitch Operation - KitchenAid briva KIDS01EK Technical Education

CHECKING THE KEYPAD AND KEYSWITCH OPERATION

CHECKING KEYPAD OPERATION
Check the keypad ribbon tail for:
• Broken, shorted, corroded, or creased
traces.
• Loose connection to the control.
• Contaminants or corrosion around the
perimeter of the keypad, on the keypad
or the ribbon tail, or the keypad connec-
tor at the control.
To test an LED function, confirm that the LED
turns On during the "Display Test" at the begin-
ning of the Diagnostics Cycle (refer to the
"Diagnostics Cycle Time Chart" on pages 6-1
and 6-2).
CHECKING THE KEYSWITCH
CONTACTS
Before checking the keyswitches:
• Disconnect power to the dishwasher.
• Unplug the ribbon cable at connector P1
on the control board.
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
SW10
SW11
SW12
SW13
SW14
KEYSWITCH RESISTANCE CHECK TABLE
(+) Pos. Lead
KEY
CANCEL
(NOT USED)
(NOT USED)
DELAY
(NOT USED)
(NOT USED)
START
POTS & PANS
SANI RINSE
RINSE ONLY
NORMAL
(NOT USED)
(NOT USED)
(NOT USED)
Using the table below, measure the resistance
across the switch when the key is pressed.
NOTE: The ohmmeter must be connected with
the proper polarity.
If you are using an analog meter, the resis-
tance reading should go from infinity (open
circuit) down to a readable resistance level.
The level may be different, depending on your
meter, since there is a diode in the circuit.
If you are using a digital meter, the resis-
tance reading should go from infinity (open
circuit) down to a readable resistance level.
The level may be different, depending on your
meter, since there is a diode in the circuit. If
available, you can use the "diode test" function
of the meter, which will supply a voltage of
about 1.2 VDC during the test.
If any switches fail the test, replace the console
panel/keypad assembly.
If all of the switches test okay, replace the
control board.
(–) Neg. Lead
P1-12 P1-2
P1-13 P1-2
P1-11 P1-3
P1-12 P1-3
P1-13 P1-3
P1-11 P1-4
P1-12 P1-4
P1-13 P1-4
P1-11 P1-5
P1-12 P1-5
P1-13 P1-5
P1-11 P1-6
P1-12 P1-6
P1-13 P1-6
6-3