7-17
COMPONENTS TEST PROCEDURES RESULTS
TOUCH KEY
BOARD
SENSOR
(For sensor model only)
Measure the resistance between terminal
pins of connector KEY CONNECTOR.
NOTE:
When reconnecting the FPC connector,
make sure that the holes on the FPC
connector are properly engaged with hooks
on the plastic fastener.
MATRIX CIRCUIT FOR
TOUCH KEY BOARD
CONNECTOR(KEY CON)
1. Remove the 3 pin connector from PCB.
2. Measure resistance across pins 1 & 2.
3. Across pins 2 & 3.
(ohm meter scale:Rx1)
Normal:
Approximately
at 68 ± 35°F
Abnormal:
Infinite or several.
FPC CONNECTOR
Top
Resistance
value
When
touched
Less than
400 ohms
When not
touched
More than
1 mega ohm