Casio TE-2000 Service Manual page 25

Function Test
By pressing numeric (0~9) + <#–2 (SUB TOTAL)>, various tests are performed.
At this time, the following codes are printed.
#
All Tests
Operation : Y X 1
The above operation automatically does the following procedures.
(All lit display, checking EPROM CHECK SUM, RAM test, time and date setting, drawer
open, printing, issuing receipt)
X :0 (or abbreviated) .. capacity : set to 1MB
1 ............................. RAM capacity : set to 2MB
Y :0 (or abbreviated) .. Normally no input
1 ............................. When an error occurs in the ROM CHECK SUM test, perform the
1) All lit display
[Display format]
∗ ∗ ∗
14SEG :
7SEG : 8 8 8
Transaction (rear)
2) ROM CHECK ................ Confirm that the ROM CHECK SUM (the least significant digit) is 00H.
3) RAM READ/WRITE TEST ...... Perform READ/WRITE TEST within the designated capacity of RAM
4) Drawer open ................. Open the drawer.
5) Test print ....................... Perform printing test as below.
6) Time and date setting ... Set the time and date to 23:59 on December 31,2002.
7) Issuing receipt .............. Issuing receipt means fast forwarding the paper to the position to be cut.
[Print format]
#
ROM SUN OK
RAM 128KB R/W OK
BBBBBBBBBBBBBBBBBBBBBBBB
8) Test display .................. After issuing the above receipt, the following is displayed.
[Display format]
A B C
1 2 3
1
#–2 SUBTOTAL
rest of test items.
∗ ∗ ∗ ∗ ∗ ∗: 14SEG is all lit.
8 8 8 8 8
(with printing).
TEST CODE print
1
ROM CHECK SUM value
xx00
RAM READ/WRITE TEST
TEST print
(The display is held until the next key input or condition change.)
D E F G H Ver.1.01 (display of 14Seg added)
4 5 6 7 8
— 23 —
(All segments, commas and transactions are lit)