Casio TK-1550 User Manual page 25

L Department keys
Use these keys to register items to departments.
M Menu shift key
Use this key to shift flat PLU keys to 1st ~ 3rd menu.
N Merchandise subtotal key
Use this key to display and print the current subtotal
(excludes add-on tax) amount.
O New balance key
Use this key for adding the latest registered total amount
to the previous balance to obtain a new balance.
N
P New check key
Use this key in a check tracking system to input a new
check number in order to open a new check under that
number.
O
Q Old check key
Use this key in a check tracking system to input the
number of an existing check (previously created by the
new check key) whose details are stored in the check
tracking memory.
, , ~
M
R Non-add / No sale key
Non-add key: Use this key to print reference number (to
identify a personal check, credit card, etc.) during a
transaction, use this key after some numerical entries.
No sale key: Use this key to open the drawer without
registering anything.
S Tax shift 1 key
Use this key without a numeric entry to change the
Taxable 1 status of the next item.
T Tax shift 2 key
Use this key without a numeric entry to change the
Taxable 2 status of the next item.
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