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This POS terminal allows the operator to use the following four clerk identification systems:

•  Real clerk keys (standard 6 clerks/max. 126 clerks)
•  Clerk code entry (max. 255 clerks)
•  Clerk entry keys (max. 10 clerks)
•  WMF clerk keys (max. 127 clerks)
The standard POS terminal has been shipped with the real clerk key system being programmed. If you want
to change the clerk identification system, contact your authorized SHARP dealer.

These keys serve to identify clerks. Put one of the 1 through 6 keys in the clerk switch.

Clerk code entry (1 through 9999)
Enter the clerk code by using the following procedure:

These keys identify clerks. Press any one of these keys.

WMF clerk keys
Put one of the WMF clerk keys in the WMF clerk switch.

CLK

1

CLK

10

XXXX

Clerk code

˚

This POS terminal is provided with an LCD operator display.

The display can be tilted to the best viewing angle.

: Shows the PLU price level currently selected (reversing

display at the happy hour).

: Shows the PLU level currently selected.

: Shows the receipt shift status.

: Appears ( ) when the used memory is 80%.
: Appears ( ) when the used memory is 90%.
: Appears ( ) when the used memory is 95%.

: Appears when the stock of the PLU which you entered is

zero or negative.

: Shows the department shift status currently selected.

Window: In the REG mode, the window shows sales information you have just entered such as

items and media types.

Numeric entry: Entered figures appear at the cursor position.

When you want to save the electric power or save the display’s life, use the screen save function. This function
can turn the LCD backlight off when any server does not operate the POS terminal for an extended period of
time. You can program the time for which your POS terminal should keep the normal status (in which the
backlight is “ON”) before it goes into the screen save mode.
To go back to the normal mode, press any key.

In the PGM mode, 
programmable items are listed.

Appears when the double-size character 
mode is selected during text programming.

The upper-case letter “A” appears when
Caps Lock is on, and the lower-case
letter “a” appears when Caps Lock is off
during text programming.

: Appears when the VAT status is shifted.

: Appears when an electronic mail is received.

: Appears ( ) when the used memory is 80%.
: Appears ( ) when the used memory is 90%.
: Appears ( ) when the used memory is 95%.

: Appears when the receipt ON-OFF function signs OFF.

: Appears in the lower right corner of the screen when the

cash in drawer exceeds a programmed sentinel amount.
The sentinel check is performed for the total cash in drawer.

This chapter describes those steps required to take when you use the POS terminal for the first time.

You can adjust the brightness and contrast of the display by using the corresponding controls.

Before using the POS terminal, connect a printer and install paper rolls. For those operations, see the
printer’s manual.
The ER-A770 may be configured with multiple types of printers offered in the market. For specific
instructions related to the handling and care of the printer, please refer to the applicable printer instruction
manual.

Turning the control backwards
darkens the display and turning it
forwards brightens the display.

Turning the control backwards
darkens the display and turning it
forwards lightens the display.

2

The backlight in the display is a consumable part.
When the LCD display may no longer be adjusted and becomes darker, you should change the backlight.
Consult your authorized SHARP dealer for further details.