Read Sharp ER-A490 (serv.man2) Service Manual online
4
Test termination
Change the MODE switch position other than SRV position to
terminate the test. The test termination message is printed.
Change the MODE switch position other than SRV position to
terminate the test. The test termination message is printed.
101
Test termination print
[3] R/J printer test
1
Key operation
102
→
TL
2
Content
Five lines of special characters are printed as follows on the re-
ceipt and the journal regardless of receipt (ON/OFF) switch set-
ting.
Five lines of special characters are printed as follows on the re-
ceipt and the journal regardless of receipt (ON/OFF) switch set-
ting.
3
Check content
1. Check that the slanted lines of special characters are clearly
printed.
2. Check that the characters are printed at a uniform density.
3. Check the paper feed operation and the logo print.
4. Check the partial cut and the full cut. (Only for the printer with
auto cutter)
4
Termination
This check is terminated automatically.
The termination print is not performed.
This check is terminated automatically.
The termination print is not performed.
[4] Keyboard test
1
Key operation
✕✕✕✕
104
→
TL
XXXX: Sumcheck data
Standard key layout sumcheck data
ER-A490
7449
2
Details of test
Keyboard check is performed with the sum check data of key
code.
For sum check data, data are inputted to the upper four digits
before 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.
Keyboard check is performed with the sum check data of key
code.
For sum check data, data are inputted to the upper four digits
before 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.
The sum check data is obtained by totalizing all key hardware
codes except for the (TL) key and converting the total into a deci-
mal figure.
codes except for the (TL) key and converting the total into a deci-
mal figure.
ER-A490 KEY HARDWARE CODE
1. SUM CHECK DATA = 0F+06+05+04+00+
⋅⋅⋅⋅⋅
= 1D0E = 7449
↑
R
↑
J
0F 06
05
04
00
01
07 0B 0A 09
08 0C 0D
4F 46
45
44
40
41
42
43
47 4B 4A 49
48 4C 4D
3F 36
35
34
30
31
32
33
37 3B 3A 39
38 3C 3D
2F 26
25
24
20
21
22
23
27 2B 2A 29
28 2C 2D
1F 16
15
14
10
11
12
13
17 1B 1A 19
18 1C 1D
5F 56
55
54
50
51
52
53
57 5B 5A 59
58 5C 5D
6F 66
65
64
60
61
62
63
67 6B 6A 69
68 6C 6D
7F 76
75
74
70
71
TL
73
77 7B 7A 79
78 7C 7A
2. ALL KEY LAYOUT
↑
R
↑
J
0F 06
05
04
00
01
07 0B 0A 09
08 0C 0D
4F 46
45
44
40
41
42
43
47 4B 4A 49
48 4C 4D
3F 36
35
34
30
31
32
33
37 3B 3A 39
38 3C 3D
2F 26
25
24
20
21
22
23
27 2B 2A 29
28 2C 2D
1F 16
15
14
10
11
12
13
17 1B 1A 19
18 1C 1D
5F 56
55
54
50
51
52
53
57 5B 5A 59
58 5C 5D
6F 66
65
64
60
61
62
63
67 6B 6A 69
68 6C 6D
7F 76
75
74
70
71
72
73
77 7B 7A 79
78 7C 7D
3
Check item
A) Check the display in the test and the content of end print.
4
Test end
k
k
k
k
104
E - -
k
k
k
k
104
Sum check data
Added sum check data
Normal end
Error
[5] Mode switch test
1
Key operation
105
→
TL
2
Details of test
3
Check item
A) Check of the display in the test and the content of end print.
4
Test end
RECEIPT
JOURNAL
LOGO
Patial cut
Full cut
K
E Y
T E S T
S
DOT DISPLAY:
R V
Key code
7-SEGMENT DISPLAY:
1
0 4
1
0 5
X
7-SEGMENT DISPLAY:
M
O D E
S W
S
DOT DISPLAY:
R V
0~7,E,F
MODE:
x:
0
1
2
(E)
3
4
5
SRV
PGM1
OP/XZ
X1/Z1
X2/Z2
PGM2
REG
7
REG
MGR
0
SRV
6
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