Sharp ER-A440 Service Manual page 25

3) Check items
a) Key code
HARDWARE CODE" of the following keys will be displayed ever
time the keys are pressed.
"---" indicates that a key is struck twice and also that input data is
not accepted.
[KEY POSITION CODE]
<ALL KEY>
R J 63 62 61 52 51
74 43 33 42 32 41 31
14 23 24 22 72 21 71
04 13 03 12 02 11 01
<ER-A440 STANDARD KEY BOARD LAYOUT>
R J 63 62 61 52 51
74 43 33 42 32 41 31
14 23 24 22 72 21 71
04 13 03 12 02 11 01
4) Test termination
Change the mode switch position other than SRV position to termi-
nate the test.
The test terminates with the test and message printed
[3] R/J printer test
1) Key operation
CA/AT
102
2) Functional description
Display the following message.
1 2 3 4 5 6 7 8 9 0
Print the following characters.
<RECEIPT>
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
3 lines of Z(24 characters)
are printed
65 68 67 58 77 78
66 55 56 57 48 38
60 40 45 35 46 47 37
50 30 76 75 36 28 27
20 70 15 05 16 17
10 00 26 25 06 07
68 67 58 77 78
66 55 56 57 48 38
40 45 35 46 47 37
30 76 75 36 28 27
70 15 05 16 17
00 26 25 06
1 0 1
<JOURNAL>
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
3 lines of Z(24 characters)
are printed
3) Check items
a) The head of printing position must be exactly aligned for "RE-
CEIPT" and "JOURNAL".
b) Printed characters must be free of stain and blur.
4) Test termination
This check is terminated automatically.
[4] Keyboard test
1) Key operation
XXXX 104
XXXX: Sumcheck data
18
Standard keyboard layout sumcheck data
08
ER-A440
2) Functional description
Keyboard test is performed with the sumcheck data of key code.
For sumcheck data, data are inputted to the upper upper four digits
befor the diagnostics code.
The data are compared with the added data which are added until the
final key (TL) is pressed. if the data agree with the added data, the
end print is made. If not, the error print is made.
18
The su check data is obtained by totalizing all key hardware codes
except for the (TL) key and converting the total into a decimal figure.
08
[ALL KEY LAYOUT]
R J 3F 3E 3D 34 33
4A 2B 21 2A 20 29 1F
0E 17 18 16 48 15 47
04 0D 03 0C 02 0B 01
[STANDARD KEYBOARD LAYOUT]
SUMCHECK DATA = 4A + 0E + 04 + 2B + 17 +
R J 3F 3E 3D 34 33
A4 2B 21 2A 20 29 1F
0E 17 18 16 48 15 47
04 0D 03 0C 02 0B 01
Display the following message on the front display.
5 – 2
CA/AT
41
42 37 38 39 30 26
3C 28 2D 23 2E 2F 25
32 1E 4C 4B 24 1C 1B
14 46 0F 05 10
0A 00 1A 19 06
42 37 38 39 30 26
28 2D 23 2E 2F 25
1E 4C 4B 24 1C 1B
46 0F 05 10
00 1A 19 06
1 0 4
2266
44 43 3A 4D 4E
11 12
07 08
= 2266
44 43 3A 4D 4E
11
12
08
Key code