Keypad Matrix Chart - Whirlpool Personal Valet PVBN600 Service Manual

KEYPAD MATRIX CHART

Before replacing the electronic control board,
check for the proper touchpad functioning, as
follows:
1. Disconnect power from the unit.
2. Remove connectors P1 and P13 from the
electronic control board.
3. Using the table below, measure the resis-
tance across the switch when the touchpad
is pressed. The meter must be connected
with the proper polarity, as follows:
• For an analog meter readout, the resis-
tance reading should go from infinity,
(open circuit), down to about 10 or 20
ohms.
• For a digital meter readout, the resis-
tance reading should go from infinity,
(open circuit), down to about 2 to 4
megohms. If a diode is available, you
can use the "diode test" function of the
meter, which will give you a voltage of
about 1.2 VDC during the test.
TOUCHPAD
Start / Cancel
Arrow Down
Arrow Up
Dry
Buzzer
Heavy Duty
Cotton Poly
RegularCare
Cotton Poly
Wool
Delicate
QuickCare
4. If any switches fail this test, replace the
control panel assembly (see page 5-9 for
the procedure).
If the switches test okay, replace the elec-
tronic control board (see page 5-7 for the
procedure).
+ LEAD – LEAD
P1-12 P1-2
P1-11 P1-3
P1-13 P1-3
P1-12 P1-4
P1-13 P1-4
P1-11 P1-5
P1-12 P1-5
P1-13 P1-5
P1-11 P1-6
P1-13 P1-6
THERMISTOR RESISTANCE CHART
TEMP –˚F
50
60
70
80
90
100
110
120
130
140
150
160
7-4
TEMP –˚C OHMS
10 19904
15.6 15314
21.1 11884
26.7 9298
32.2 7333
37.8 5826
43.3 4663
48.9 3757
54.4 3047
60.1 2487
65.6 2043
71.1 1687