Metrologic Instruments MS7220 manual Symptoms, Possible Causes, Solution, RS-232Only

TROUBLESHOOTING GUIDE (CONTINUED)

SYMPTOMS

POSSIBLE CAUSE(S)

SOLUTION

Alpha		Enable Caps Lock detect
characters	Computer is in Caps	setting of the scanner to
show as lower	Lock mode	detect whether the PC is
case		operating in Caps Lock
Everything	These characters may	Try operating the scanner in
works except	not be supported by
for a couple of	that country’s key look	Alt mode
characters	up table

RS-232 Only

The unit is transmitting each character

Configuration is not correct

Increase the interscan code delay setting. Adjust whether the F0 break is transmitted. It may be necessary to try this in both settings.

Alpha	Computer is in Caps	Enable Caps Lock detect
characters	Lock mode	setting of the scanner to
show as lower		detect whether the PC is
case		operating in Caps Lock
Everything	These characters may	Try operating the scanner in
works except	not be supported by	Alt mode
for a couple of	that country’s key look
characters	up table
Power-up OK	Com port at the host is	Check to make sure that the
and scans OK	not working or	baud rate and parity of the
but does not	configured properly	scanner and the
communicate		communication port match
properly to the		and the program is looking
host		for “RS-232" data
Power-up OK	Cable not connected	Check to make sure that the
and scans OK	to the proper com port	baud rate and parity of the
but does not		scanner and the
communicate		communication port match
properly to the		and the program is looking
host		for “RS-232" data

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