Gasboy SERIES 9800Q, Diagnostic Manual

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GASBOY Series 9800Q
4-14 01/28/04
With the 9800Q in standalone mode, one or more displays flash 55 at the far left of the
display.
Possible Cause
Checks Corrective Action
9800Q is running on battery
power (Skip this Possible
Cause if your 9800Q is not
equipped with a battery back-
up power supply). Check if the breaker supplying
power to the MICRO circuit is
off or tripped.
Check if 115/230 VAC is being
switched through circuit
breaker.
Check if 115/230 VAC is
measured in 9800Q junction
box.
Check the MICRO power
switch.
Check the fuse in the power
bracket. Turn breaker on, if off.
Replace circuit breaker if
115/230 VAC is not being
switched.
Correct wiring problems if
115/230 VAC is not measured.
Turn on, if off.
Replace fuse if blown.
Defective AC power fail circuit. Using a DC voltmeter,
measure between ground
(TP2) and pin 3 of connector
P10 (violet wire) on the CPU
PCB. Replace the power supply
PCB if +5VDC is not
measured between ground
and the violet wire.
With the 9800Q in standalone mode, one or more displays flash 56 at the far left of the
display.
Possible Cause
Checks Corrective Action
Bad pulser or CPU PCB. With the pump handle in the
off position (nozzle hung up),
observe the pulser lamp
indicators on the CPU PCB,
while slowly turning the pulser
shaft. Both lamps (PULA and
PULB) should flash on and off. If both lamps do not flash,
replace the pulser. If both
lamps flash, replace the CPU
PCB.