Sharp UP-3300 - Manual (Page 246)

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In Case of Power Failure
When power is lost, the POS terminal retains its memory contents and all information on sales entries.
• When power failure is encountered in POS terminal idle state or during an entry, the POS terminal returns
to the normal state of operation after power recovery.
Before Calling for Service
The malfunctions shown in the left-hand column below, labeled “Fault,” do not necessarily indicate
functional faults of the machine. It is therefore advisable to refer to the “Checking” shown in the right-hand
column before calling for service.
Fault Checking
• The display does not illuminate. • Is power supplied to the electric outlet?
• Is the power cord plug out or loosely connected
to the electrical outlet?
• Is the power switch in the “ON” position?
• Are the brightness control and the contrast
control adjusted correctly?
• Is the terminal in screen-save mode?
• The display is illuminated, but the whole • See the printer manual.
machine refuses entries.
• No receipt is issued. • See the printer manual.
• No journal paper is taken up.
• Printing is unusual.