Gasboy 9800A Series - Manual (Page 46)

GASBOY Series 9800A
4-2 03/07/03
9800A is dead. Displays are blank, including decimal points. Unable to activate side 1 or
side 2.
Possible Cause
Checks Corrective Action
No 115/230AC feed to 9800A
for micro power. Check if circuit breaker is off
or tripped.
Check if 115/230VAC is being
switched through circuit
breaker.
Check if 115/230VAC is
measured at the micro
connector on the power
bracket. Turn breaker on, if off.
Replace circuit breaker if
115/230VAC is not measured.
Correct wiring problems if
115/230VAC is not measured.
Power switch is off. Check the power switch. Turn on, if off.
AC power fuse is blown. Check the fuse in power
bracket. Replace fuse, if blown.
Blown power supply (PICO)
fuse(s) or defective power
supply. Using a voltmeter, measure
between the GND test point
and each side of F1 and F2 on
the power supply. Replace F1 if 5VDC is
measured on one side but not
the other.
Replace F2 if 7.5VDC is
measured on one side but not
the other.
Replace the power supply if
0VDC is measured on both
sides of F1 or F2.
Defective CPU PCB. None Replace the PCU PCB if
+5VDC is measured between
the GND and +5VDC test
points on the CPU PCB but
the 9800A is still dead.
NOTE: Changing the pulser
rate switches may require
replacement of your Weights
and Measures seal.