7-4
THERMISTOR RESISTANCE CHART
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.
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).
TOUCHPAD
+ LEAD
– LEAD
Start / Cancel
P1-12
P1-2
Arrow Down
P1-11
P1-3
Arrow Up
P1-13
P1-3
Dry
P1-12
P1-4
Buzzer
P1-13
P1-4
Heavy Duty
Cotton Poly
RegularCare
Cotton Poly
Wool
P1-13
P1-5
Delicate
P1-11
P1-6
QuickCare
P1-13
P1-6
P1-11
P1-5
P1-12
P1-5
TEMP –˚F
TEMP –˚C
OHMS
50
10
19904
60
15.6
15314
70
21.1
11884
80
26.7
9298
90
32.2
7333
100
37.8
5826
110
43.3
4663
120
48.9
3757
130
54.4
3047
140
60.1
2487
150
65.6
2043
160
71.1
1687
Summary of Contents for Personal Valet PVBN600
Page 16: ...2 6 NOTES ...
Page 22: ...3 6 NOTES ...
Page 54: ...8 2 NOTES ...
Page 56: ...CORPORATION ...