Troubleshooting Procedures
Is continuity
indicated when
key pad is
pressed?
NO
Replace
control
key pad.
Unit operates.
Check Touch Keypad
NO
Adjust or
replace door
sensing
switch.
Unit operates.
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Measure resistance
of control key
panel after removing
ribbon connector.
NO
Reconnect
ribbon connector
for proper
connection.
Measure resistance of
CN2 between pin 1 and
pin 3 with door closed.
NO
Reconnect
ribbon connector
for proper
connection.
16023057 Rev. 0
Key pad matrix is located in
"Testing Procedures" located on
Pages 20 & 21.
Does ribbon
connector have
proper
connection?
Replace
circuit
board.
Does ribbon
connector have
proper
connection?
Replace
circuit
board.
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