F-27
NOTE: THERE SHOULD NOT BE CONTINUITY BETWEEN PINS UNTIL A KEY IS PRESSED ON THE KEYPAD.
TEST POINTS
FROM PIN
TO PIN
1J2
6J2
1J2
8J2
1J2
2J2
1J2
4J2
2J2
9J2
2J2
7J2
2J2
3J2
2J2
5J2
3J2
6J2
3J2
8J2
3J2
4J2
4J2
9J2
4J2
7J2
4J2
5J2
5J2
6J2
5J2
8J2
6J2
9J2
6J2
7J2
7J2
8J2
8J2
9J2
TROUBLESHOOTING & REPAIR
SP-250 KEYPAD RESISTANCE TEST
TABLE F.1 - SP-250 KEYPAD RESISTANCE TESTS
KEY PRESSED
CENTER UP ARROW
CENTER DOWN ARROW
MEMORY 3
SWITCH SET DISPLAY
MEMORY 5
MEMORY 4
MEMORY 2
MEMORY 1
LEFT UP ARROW
LEFT DOWN ARROW
SPOT
TOGGLE
IMP VOLTS
TIMERS OFF
AUTO
PROCESS WIRE/GAS
MANUAL
RIGHT UP ARROW
RIGHT DOWN ARROW
SAVE
IDEALARC SP-250
MAXIMUM ALLOWABLE
RESISTANCE
(TYPICAL RESISTANCE)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
100 OHMS (30 TYPICAL)
F-27