Gasboy CFN Series Diagnostic Manual - Manual (Page 163)

Island Card Reader
03/19/04 4-47
For Optical Reader Only
Possible Cause Checks Corrective Action
Card is not punched correctly,
or one card of a two-card
system is being used. Verify the card against the
card layout. If a two-card
optical system is used, both
cards must be inserted
simultaneously. Punch new card, if defective.
No 5VDC to reader lamp
housing. Measure for +5VDC on both
sides of F1 on the optical card
reader I/F PCB. Replace F1 if +5VDC is not
measured on both sides.
One or more bulbs burned out
in lamp housing. Open lamp housing to check
lamps. Replace lamp housing if one
or more bulbs is burned out.
Scratched, cracked, dirty, or
broken glass in optical reader. Open lamp housing to check
glass. Replace glass if it is
scratched, cracked, or broken.
Clean glass if it is still dirty.
Defective optical reader. Measure between DC ground
and pin E on P4 of the optical
card reader I/F PCB while
inserting a card. Replace the optical reader if
the voltage at pin E doesn't go
to +5VDC when a card is
inserted.
Defective optical reader I/F
PCB. None. Replace optical reader I/F
PCB if replacing the optical
reader didn't fix problem.
Defective Reader Terminal
CPU board. None. Replace reader terminal CPU
board, if replacing the optical
reader and optical reader I/F
PCB didn't fix problem.