25
TRUE
FALSE
FALSE
Value <0,5Vdc
Value >0,5Vdc
+ GND
GND CA0
ALARM CODE 12 :
MAIN CYLINDER (BOTTOM SIDE) READING
LOWER THAN THE MINIMUM VALUE
NOTE:
Main Unit Processor identifies below and over the signal range a minimum zone and a
maximum zone in order to check the sensor.
Verify on the Main
pc board that between
1(+) e 2(GND) there is a voltage
of +15Vdc
TRUE
Measure on the Main
PC board the voltage
on
2(GND) e 3(CA0)
The Main pc board
is faulty. Proceed
with the
replacement(*)
Problems on the
Connection
Cable. Probably
short circuited.
Check the cable
Broken Pressure
Transducer. Proceed
With the
Replacement
FALSE
Disconnect wires on
1(+) e 2(GND) and
Verify a voltage of +15Vdc
The Main pc board
is faulty. Proceed
with the
replacement(*)
Problems on the
Connection
Cable. Probably
short circuited.
Check the cable
Broken Pressure
Transducer. Proceed
With the
Replacement
(*) REFER ALSO TO EPROM and EEPROM MEMORIES REPLACEMENT - page 32
