Sharp ER-A450 (serv.man2) Service Manual ▷ View online
3) Check items
a) Cashier code (One hole cashier key: OPTION)
Display
State
000
Off
001
Cashier key No.1
002
Cashier key No.2
003
Cashier key No.3
↓
↓
014
Cashier key No.14
015
Cashier key No.15
b) 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.
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>
<ER-A440 STANDARD KEY BOARD LAYOUT>
4) Test termination
Change the mode switch position other than SRV position to termi-
nate the test.
nate the test.
The test terminates with the test and message printed
[3] R/J printer test
1) Key operation
2) Functional description
Display the following message.
Print the following characters.
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: Sumcheck data
Standard keyboard layout sumcheck data
ER-A440
2243
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.
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.
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.
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.
[ALL KEY LAYOUT]
[STANDARD KEYBOARD LAYOUT]
SUMCHECK DATA = 4A + 0E + 04 + 2B + 17 +
⋅
⋅
⋅
⋅
⋅
⋅
⋅
⋅
= 2266
Display the following message on the front display.
Key code
68
67
58
77
78
66
55
56
57
48
38
R
J
63
62
61
52
51
40
45
35
46
47
37
74
43
33
42
32
41
31
30
76
75
36
28
27
14
23
24
22
72
21
71
70
15
05
16
18
04
13
03
12
02
11
01
00
26
25
06
08
65
17
07
60
50
20
10
68
67
58
77
78
66
55
56
57
48
38
R
J
63
62
61
52
51
40
45
35
46
47
37
74
43
33
42
32
41
31
30
76
75
36
28
27
14
23
24
22
72
21
71
70
15
05
16
18
04
13
03
12
02
11
01
00
26
25
06
08
1 0 1
102
TL
1 2 3 4 5 6 7 8 9 0
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
<RECEIPT>
3 lines of Z(24 characters)
are printed
are printed
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
<JOURNAL>
3 lines of Z(24 characters)
are printed
are printed
XXXX 104
TL
44
43
3A 4D 4E
42
37
38
39
30
26
R
J
3F
3E 3D 34
33
28
2D 23
2E 2F
25
4A
2B 21
2A 20
29
1F
1E 4C 4B 24
1C 1B
0E 17
18
16
48
15
47
46
0F
05
10
12
04
0D 03
0C 02
0B 01
00
1A 19
06
08
41
11
07
3C
32
14
0A
44
43
3A 4D 4E
42
37
38
39
30
26
R
J
3F
3E 3D 34
33
28
2D 23
2E 2F
25
4A 2B 21
2A 20
29
1F
1E 4C 4B 24
1C 1B
0E 17
18
16
48
15
47
46
0F
05
10
12
04
0D 03
0C 02
0B 01
00
1A 19
06
08
11
1 0 4
5 – 2
3) Check items
a) Check of the display in the test and the content of end print.
4) Test termination
This check is terminated automatically.
The test terminates with the test and message printed
[5] Mode switch test
1) Key operation
2) Functional description
Display the following message on the front display.
When the Mode Switch is switched over in the following order, a
numerical value corresponding to each position of mode switch is
displayed at X.
numerical value corresponding to each position of mode switch is
displayed at X.
3) Check items
a) Check of the display in the test and the content of end print.
4) Test termination
The test terminates with the test and message printed
[6] Printar sensor test
1) Key operation
2) Functional description
State of the paper near end sensor is sensed and displayed.
3) Check items
X, Y
Description
C
Paper near end sensor not detected. (Paper is existed)
O
Paper near end sensor detected. (Paper is not existed)
"C" is always display when no sensor is used.
4) Test termination
Press any key. The test terminates with the test and message printed
[7] Calendar oscillator test
1) Key operation
2) Functional description
This program is used to test the calendar oscillator function.
Display:
"
✻✻
–
✻✻
" shows the current time.
"–" is blinking. (500ms ON and OFF)
3) Check items
Time elapsed after master reset must be displayed.
4) Test termination
Press any key. The terminates with the test and message printed
[8] SSP test
1) Key operation
2) Functional description
If an SSP is programmed, its contents are automatically chacked and
the result is printed.
the result is printed.
Display:
Normal end
Error
1 0 4
1 0 4
E-----
105
TL
1 0 5
X
Mode:
x :
PGM2
OFF
OP X/Z
SRV
0
PGM1
1
2
9
3
X2/Z2
MGR
REG
SRV
0
X1/Z1
7
6
5
4
Normal end
Error
1 0 5
1 0 5
E-----
106
TL
1 0 6
X-X
JOURNAL side
RECEIPT side
1 0 6
108
TL
1 0 8
109
TL
1 0 9
5 – 3
3) Check items
Check printing of the termination message.
4) Test termination
This check is terminated automatically.
The test terminates with the test and message printed
In this SSP check, set the data for check in the empty area of SSP
entry REG and erase the data for check after completion of check.
Therefore SSP setting before check is not cleard.
If therefore there is no SSP entry REG remainedfor SSP check,
F-print is performed to terminate the program without check.
entry REG and erase the data for check after completion of check.
Therefore SSP setting before check is not cleard.
If therefore there is no SSP entry REG remainedfor SSP check,
F-print is performed to terminate the program without check.
[9] Drawer open sensor test (For standard test)
1) Key operation
2) Functional description
State of the drawer open sensor is sensed and displayed.
3) Check items
X
Description
O
Drawer open sensor detected. (Drawer opend)
C
Drawer open sensor not detected. (Drawer closed)
a) Check opening of the specified drawer.
b) Check the display indication when the drawer is open and closed.
4) Test termination
Press any key. The test terminates with the test and message printed
[10] Drawer open sensor test (For remote drawer)
1) Key operation
2) Functional description
State of the drawer open sensor is sensed and displayed.
3) Check items
X
Description
O
Drawer open sensor detected. (Drawer opend)
C
Drawer open sensor not detected. (Drawer closed)
a) Check opening of the specified drawer.
b) Check the display indication when the drawer is open and closed.
4) Test termination
Press any key. The test terminates with the test and message printed
[11] Standard RAM test
1) Key operation
2) Functional description
Perform the following check for the standard RAM 128 KByte SRAM.
The memory contents should not be changed before and after the
check.
The memory contents should not be changed before and after the
check.
Perform the following processes for memory address to be checked
(1E0000H~1F0000H).
(1E0000H~1F0000H).
PASS1: Save memory data.
PASS2: Write data "0000H."
PASS3: Read and compare data "0000H," write data "5555H."
PASS4: Read and compare data "5555H," write data "AAAAH."
PASS5: Read and compare data "AAAAH."
PASS6: Restore the memory data.
If a compare error occurs in the check sequence PASS1-PASS6, an
error print is made. If no error occurs through all address, the check
ends normally.
error print is made. If no error occurs through all address, the check
ends normally.
The following address check is performed further.
Check point address =
1E0000H, 1E0001H
1E0002H, 1E0004H
1E0008H, 1E0010H
1E0020H, 1E0040H
1E0080H, 1E0100H
1E0200H, 1E0400H
1E0800H, 1E1000H
1E2000H, 1E4000H
1E8000H, 1F0000H
1E0002H, 1E0004H
1E0008H, 1E0010H
1E0020H, 1E0040H
1E0080H, 1E0100H
1E0200H, 1E0400H
1E0800H, 1E1000H
1E2000H, 1E4000H
1E8000H, 1F0000H
3) Check the following items:
Check the termination printout.
4) Test termination
The test terminates after printing the termination printout.
Termination printout:
Normal termination
120
Abnormal termination
Ex – – – – –
120
X = 01: Data check error
02: Address check error
Note: When an error occurs, the error print is performed and the
check is terminated. The error occurrence address is shown in
hexadecimal at positions shown with
hexadecimal at positions shown with
.
Normal end
Error
1 0 9
1 0 9
E-----
1 0 9
F-----
SSP table full
110
TL
1 1 0
X
1 1 0
111
TL
1 1 1
X
1 1 1
120
TL
1
0
7-SEGMENT DISPLAY:
2
5 – 4
[12] Standard ROM test
1) Key operation
2) Functional description
Sum check of the standard ROM (C00000H - C7FFFFH) is per-
formed. If the lower two digits of SUM is 10H, it is normal.
formed. If the lower two digits of SUM is 10H, it is normal.
3) Check the following items:
Check the printout after the test.
4) Test termination
The test automatically terminates with termination message.
Normal termination print
130
ROM1
27020
Error termination print
E – – – –
130
ROM1
27020
Note: "
" means the ROM version number.
The underlined section (10 bytes) of code table is provided in
the ROM as a standard and the table content is always
printed.
The table position is the upper 10 digits of the ROM address.
The check sum correction address is the last address -0FH.
the ROM as a standard and the table content is always
printed.
The table position is the upper 10 digits of the ROM address.
The check sum correction address is the last address -0FH.
[13] Printer dot pulse width adjustment
1) Key operation
2) Functional description
Adujustment width of TPW at the test point TP1.
The pulse width of TPWW canw bwe adjusted using the 200K pot
VR1.
The pulse width of TPWW canw bwe adjusted using the 200K pot
VR1.
3) Check items
a) The pulse width of TPW must be adjusted to that at the above test
point TP1.
4) Test termination
Do the program reset.
[14] Option RAM test
1) Key operation
JOB
#NO.
RAM NO.
Memory to be
checked
Address area to be
checked
200
Option RAM
ER-03RA
200000H
∼
27FFFFH
2) Content
The following check are performed for the optional RAM.
The following process is performed for memory addresses to be
checked.
checked.
PASS1: memory data save
PASS2: Data "0000H" write
PASS3: Data "0000H" read and comparison, data "5555H" write
PASS4: Data "5555H" read and comparison, data "AAAAH" write
PASS5: Data "AAAAH" read and comparison
PASS6: Memory data restore
130
TL
1
0
7-SEGMENT DISPLAY:
3
150
TL
TPW=370±3(µs)
MAIN PWB
GND
VR1
TP
200
TL
5 – 5
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