Gasboy CFN Series Diagnostic Manual - Manual (Page 158)

GASBOY CFN Series
4-42 03/19/04
ISLAND CARD READER (ICR) PROBLEMS
ICR is dead. Display is blank. No response to reader or keypad.
Possible Cause Checks Corrective Action
No 115 VAC feed to ICR. Is breaker off or tripped?
Is 115VAC being switched
through breaker?
Is 115VAC measured at the
TB6 terminal block?
Turn breaker on, if off.
Replace breaker if 115VAC is
not being switched.
Correct wiring problems if 115
VAC is not measured.
ICR power switch is off. Check position of ICR power
switch. Turn ICR power switch on, if
off.
No 115 VAC at power supply
AC input connecter. Check if 3 Amp fuse on power
supply bracket assy. is blown. Replace 3 Amp fuse if blown.
If not, replace power supply
bracket assy.
No DC voltage at DC Out
connector of power supply
assy. Check the LEDs on power
supply. If LED's are not lit,
measure the voltages on the
DC Out connector of the
power supply assy. between
black (DC ground) and orange
(+5VDC) and black and red
(+12VDC). If +5VDC and +12VDC are not
measured, replace the power
supply. If only +12VDC is
measured, check the 5 Amp
picofuse on the power monitor
PCB mounted on the rear of
the Power Supply Assy.
Replace the 5 Amp picofuse, if
blown.
Defective reader terminal CPU
board. None. Replace reader terminal CPU
board.
Defective LCD display or LCD
I/F PCB. None. Replace the LCD display if
replacing the reader terminal
CPU board didn't fix the
problem.