Gasboy 1000 Series FMS Diagnostic Manual - Manual (Page 113)

GASBOY Series 1000
6-28 03/07/03
Receipts are printed but aren't cut completely across the paper.
Possible Cause Checks Corrective Action
Loose cutter bar adjustment
screw or improperly adjusted
cutter bar blades. Turn on the self-test switch on
the Printer Status PCB to
initiate self-test printing. Turn
off the switch to terminate
printing and activate the cutter
bar. Do this repeatedly to
check on the cutter bar
adjustment. Adjust the cutter blades by
turning the cutter bar
adjustment screw. See the
Receipt Printer Maintenance
section in the Operation
Manual for detailed
information.
Defective cutter bar assembly. Replace the printer
mechanism if the cutter bar
cannot be adjusted to cut
properly.
Paper doesn't advance when printing receipts, printing in self-test, or when paper feed
switch is pressed.
Possible Cause Checks Corrective Action
Defective paper feed switch on
the printer status PCB Using a DC voltmeter,
measure between pins 2
(paper feed) and 6 (ground) on
the P4 connector of the Printer
Status PCB. +5VDC should
be measured until the paper
feed switch is pressed causing
0VDC to be measured. Replace the Printer Status
PCB if 0VDC is not measured
when the paper feed switch is
pressed.
Defective Star Controller PCB
or printer mechanism (clutch
mechanism or clutch
solenoid). Using an oscilloscope,
measure pin 3 of the CN2
connector on the Star
Controller PCB. While
pressing the paper feed
switch, a 12VDC square wave
should be measured.
If using a DC voltmeter,
voltage should measure
between 4 and 6VDC.
Replace the Star Controller
PCB if a +12VDC square wave
is not measured at CN2 pin 3.
Replace the printer
mechanism if a +12 VDC
square wave is measured at
CN2 pin 3 and the paper
doesn't advance.
Printing appears light.
Possible Cause Checks Corrective Action
Worn out or dry ink ribbon. Examine ribbon for wear or
dryness. Replace ribbon.
Improper head clearance on
printer mechanism. Replace printer mechanism.
Insufficient print solenoid drive
current. Replace Star Controller PCB if
replacing printer mechanism
didn't correct problem.