Sharp XE-A110 Service Manual ▷ View online
9. Keyboard circuit
KST2
∼
KST5 of the key strobe signal are used as the Mode switch
strobe signals.
10. Display circuit
One strobe signal drives two-digit LED.
KR2~KR5
CPU
KR1
KST1~KST18
KST1~
KST8
KST2~KST5
Key
Matrix
Matrix
Mode
Switch
Switch
ST1
ST2
ST3
ST4
ST5
KSTn
KSTm
1ms
30~100µs
n=1~4, m=5~8
Segment signals
Operator display
Customer display
(ER-A 130)
Co mmon sig na ls
CPU
CPU
ST1~5
SA
1
SB
1
SC
1
SD
1
SE
1
SF
1
SG
1
SD
P1
SA
2
SB
2
SC
2
SD
2
SE2
SF
2
SG
2
SD
P2
6V
Q8
6.8K
1K
ST
1
1
LED
LED
2.2K
12K
C3198
SA1~SG1
SDP1
12K
C3198
2.2K
SA2~SG2
SDP2
22
0
22
0
22
0
22
0
– 8 –
CHAPTER 5. TEST FUNCTION
1) To execute the diag test, set the mode switch to Z/PGM, enter a
desired JOB code, and press PO (paid out) key.
2) The test message is printed by the printer.
3) Test contents and key operations
No.
Test contents
Key operations
1
Mode SW test
1
→
PO
2
Key test
___
02
→
PO
3
Display buzzer test
3
→
PO
4
Drawer test
4
→
PO
5
Printer test
5
→
PO
6
CPU version No. print
6
→
PO
7
Battery level test
7
→
PO
1. Mode switch test
1) Key operation
1
→
PO
2) Test procedure
Change over the mode switch as shown in 3). If the mode switch data
in the proper sequence is not read with the above operation, an error
print is made.
To cancel this test mode, set the mode switch from a position other
than Z/PGM to Z/PGM. In this case, the completion print is made.
During the test, the display indicates hard codes which correspond to
switch positions.
in the proper sequence is not read with the above operation, an error
print is made.
To cancel this test mode, set the mode switch from a position other
than Z/PGM to Z/PGM. In this case, the completion print is made.
During the test, the display indicates hard codes which correspond to
switch positions.
3) Mode switch operation
Mode:
Z/PGM
→
X/FLASH
→
REG
→
CAL
→
&
→
Z/PGM
Display:
(04)
(03)
(02)
(01)
(0.00)
No check when
returning the
switch to Z/PGM.
returning the
switch to Z/PGM.
Completion print
01
Error print
########01
2. Key test
1) Key operation
_____02
→
PO
Sumcheck
data
2) Test procedure
Perform the keyboard check with the sum check data of the key code.
Enter the sum check data of each model in the four digits preceding
the diag number 02, and compare the data with the key position code
which is added until TL/AT/NS key is pressed. (TL/AT/NS key is out
of calculation.) If the data coincides with the code, the completion
print is made. If not, the error print is made.
(At that time, a catch sound is generated and the key code is dis-
played in the lower two digits on the display.)
Enter the sum check data of each model in the four digits preceding
the diag number 02, and compare the data with the key position code
which is added until TL/AT/NS key is pressed. (TL/AT/NS key is out
of calculation.) If the data coincides with the code, the completion
print is made. If not, the error print is made.
(At that time, a catch sound is generated and the key code is dis-
played in the lower two digits on the display.)
3) Key check sequence
There is no specified key check sequence. Pressing TL/AT/NS key
terminates the key check and starts comparison with the sum check
data.
terminates the key check and starts comparison with the sum check
data.
Completion print
02
Error print
########02
No.
Model
Sum check data
Production start
1
XE-A110
946
Jun. 1995
2
XE-A130
1107
Jun. 1995
The hard codes shown below are added in the hexadecimal system
and the lower two digits of the total are converted into the decimal
number, which is the sum check data.
and the lower two digits of the total are converted into the decimal
number, which is the sum check data.
Sum check data table (Keys which are shaded as
are not used.)
1
XE-A110
2
XE-A130
All the key position codes of each model are summed up and the total
is used for the sum check data.
is used for the sum check data.
3. Display buzzer test
1) Key operation
3
→
PO
2) Test procedure
Check the continuous buzzer sound and the display state.
Display state:
8.7.6.5.4.3.2.1.
The decimal points will shift from the lower digit to the upper, step
by step.
by step.
To cancel the test mode, press any key, and the buzzer will stop and
"0.00" will be displayed.
"0.00" will be displayed.
Completion print
03
25
24
03
23
34
35
3 2
4 4
55
02
14
15
↑
4 5
7 5
05
04
33
52
62
13
12
43
54
74
22
63
53
45
TL/AT/NS
42
72
64
73
25
24
03
23
34
35
3 2
4 4
55
02
14
15
↑
45
75
05
04
33
52
62
13
12
43
54
74
22
63
53
45
TL/AT/NS
42
72
64
73
– 9 –
4. Drawer test
1) Key operation
4
→
PO
2) Test procedure
The drawer opens with the above key operation. Check that the
drawer is open. Press any key to terminate the test.
drawer is open. Press any key to terminate the test.
Completion print
04
5. Printer test
1) Key operation
5
→
PO
2) Test procedure
With the above key operation, the print test pattern is repeatedly
printed. Pressing any key will terminate the test after completion of
one cycle print. (The receipt is issued at the end.)
printed. Pressing any key will terminate the test after completion of
one cycle print. (The receipt is issued at the end.)
1
XE-A110
0
0
0
X
1
1
1
Z
2
2
2
RA
3
3
3
PO
4
4
4
VD
5
5
5
%
6
6
6
@
7
7
7
ST
8
8
8
TX
9
9
9
CA
–
–
–
CH
⋅
⋅
⋅
CK
#
#
#
CG
2
XE-A130
0
0
CA Z
1
1
CH 1
2
2
RA 2
3
3
PO 3
4
4
NT 4
5
5
ST CK
6
6
AT
+
7
7
CG –
8
8
TX ✕
9
9
RF @
–
–
, ,
*
#
.
.
% NS
#
#
VD TA
6. CPU version No. print
1) Key operation
6
→
PO
2) Description
The CPU version No. are printed with the above key operation.
(Print example)
0100
CPU version No.
This test is terminated when printing is completed.
7. Battery voltage sensor test
1) Key operation
7
→
PO
2) Test procedure
Displays A/D conversion port read value.
•
0155 or greater:
Normal
•
0154 or smaller:
Low battery display
To terminate the test, press any key.
Completion print
07
– 10 –
CHAPTER 6. SERVICE PRECAUTION
1. Printer
Since the service parts of the printer for this model are of low price,
only the printer unit is supplied. Therefore, the printer component
parts are not supplied and no service document on them is issued.
For troubleshooting of the printer, refer to the table below:
only the printer unit is supplied. Therefore, the printer component
parts are not supplied and no service document on them is issued.
For troubleshooting of the printer, refer to the table below:
*
Printer life: 300 thousand lines (XE-A110: M-31)
700 thousand lines (XE-A130: M-42V)
Ink roll life: 1 million characters
700 thousand lines (XE-A130: M-42V)
Ink roll life: 1 million characters
Phenomena
Check point/possible cause
Repair
•
The printer motor is locked and the
buzzer sounds intermittently.
buzzer sounds intermittently.
•
Check if the printer cable is disconnected.
•
Check and repair the printer cable.
•
The printer does not work properly.
•
Check if the printer life is reached.
•
Replace the printer.
•
Check if any foreign material is attached to the
printing type wheel or the gear section.
printing type wheel or the gear section.
•
Remove the foreign material. (After removing the
foreign material, set the mode switch to "REG"
and press "CL" key.)
foreign material, set the mode switch to "REG"
and press "CL" key.)
•
Defective print (Lack on the upper/
lower or left/right side)
lower or left/right side)
•
Check if the printing type is worn down.
•
Replace the printer.
•
Check if any foreign material is attached to the
printing type wheel.
printing type wheel.
•
Remove the foreign material. (After removing the
foreign material, set the mode switch to "REG"
and press "CL" key.)
foreign material, set the mode switch to "REG"
and press "CL" key.)
•
Thin print
•
Check if the ink roll life is reached.
•
Replace the ink roll.
•
Check if the ink roll is properly attached.
•
Attach the ink roll properly.
•
Check if the printing type wheel is worn down
because of life.
because of life.
•
Replace the printer.
•
Uneven pitch of print paper feed
•
Check if the roll paper size is proper.
•
Use the roll paper of following sizes:
Paper width:
57.5
±
0.5 mm
Outside diameter:
ϕ
80 mm or less
Inside diameter of paper tube:
ϕ
12 mm or less
Paper thickness:
0.06 ~ 0.085 mm
•
Check if a load is applied to the roll paper
during paper feed because of a foreign
material attached to the roll paper.
during paper feed because of a foreign
material attached to the roll paper.
•
Remove the cause to remove the load.
– 11 –
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