Gasboy Gilbarco Interface Unit - Manual (Page 40)

32 Hardware Gilbarco Interface Unit v2.1
Gasboy CFN Series
Front panel CPU LEDs
The two rows of LEDs visible through the front panel window are shown in figure and their
functions are listed in the figure after that. The upper row LEDs, left to right, are named L1, L2,
and so on through L12. The lower row LEDs, left to right, are named DC, BOK, and BAD.
Lamp Indication
L1 CRIND RS485/422 Transmit data
L2 CRIND RS485/422 Receive data
L3 Site Controller RS485/422 transmit data
L4 Site Controller RS485/422 receive data
L5 Deadman timer refresh
L6 Current loop power enabled
L7 Current loop #1 active if flashing
L8 Current loop #2 active if flashing
L9 Program fail code bit 1
L10 Program fail code bit 2
L11 Program fail code bit 3
L12 Program fail code bit 4
DC DC 5V power OK (green)
BOK Battery OK (green)
BAD Battery bad (red)
Examination of these lamps allows quick evaluation of the state of the interface. They are
discussed in the Installation chapter.
The "Internal program error" conditions indicate severe hardware failure or software defects
which must be fixed by the developers. Note which lamps were on, and the circumstances such
as what was being done and how often this is seen. If internal program error is not a frequent
event, you may temporarily restore a site to operating condition by cycling power to the interface
box after carefully gathering information. Report any internal program error conditions to
Gasboy Development.
Lamp
L9 L10 L11 L12 Code Meaning
OFF OFF OFF OFF 0 Normal. Other lamps should blink.
OFF OFF OFF ON 1 Power fail. Problem with AC power detect
OFF OFF ON OFF 2 Internal program error.
OFF OFF ON ON 3 Internal program error.
OFF ON OFF OFF 4 ROM checksum bad. Pin bent on U18-
U21?
OFF ON OFF ON 5 RAM bad. Replace chips U31 and U32.
OFF ON ON OFF 6 Program failure. Replace U18-U20.
OFF ON ON ON 7 Internal program error.
ON OFF OFF OFF 8 Internal program error