Mec 4069RT - Continuity Checks

“4069RT” Service and Parts Manual March 2014
Page 2-15
CONTINUITY CHECKS
T OGGLE S WITCH – 1-P OLE 3-P OSITION
Figure 2-14: Toggle Switch, 1-Pole 3-Position
• Disconnect wires.
• Connect first probe of ohm meter to common terminal.
• Connect second probe of ohm meter to top terminal.
• With the toggle UP or MIDDLE there should be a low
resistance.
• Move second probe to bottom terminal.
• With the toggle DOWN or MIDDLE there should be a low
resistance.
• Connect first probe of ohm meter to top terminal.
• Connect second probe of ohm meter to bottom terminal.
• With toggle in ANY POSITION there should be no read-
ing.
T OGGLE M OMENTARY S WITCH
Figure 2-15: Toggle Switch, Momentary
• Disconnect wires.
• Connect first probe of ohm meter to
common terminal.
Test top position
• Connect second probe to top normally
open terminal.
• With the toggle in the neutral (open)
position there should be no reading.
• With the toggle UP (closed) there
should be a low resistance.
• With the toggle DOWN (closed) there
should be no reading.
Test bottom position
• Move second probe to bottom normally
open terminal.
• With the toggle in the neutral (open)
position there should be no reading.
• With the toggle DOWN (closed) there
should be a low resistance.
• With the toggle UP (closed) there
should be no reading.
• Repeat for both rows of two-row
switch.
Common
Top
Bottom
Common
Top
Bottom
ART_3152
Common
Normally Open
Normally Open
Common
Normally Open
Normally Open
ART_2563
Common
Normally Open
Normally Open
Normally Open
Normally Open
Common
Normally Open
Normally Open
Common
ART_2564