Sharp XE-A101 (serv.man6) Service Manual ▷ View online
CHAPTER 2. OPTIONS
1. OPTIONS (No)
2. SERVICE OPTIONS (No)
3. SUPPLIES
NO
NAME
PARTS CODE
PRICE RANK
DESCRIPTION
1
ROLL PAPER
AS
5 ROLLS/PACK
2
INK ROLLER
AF
4 SPECIAL SERVICE TOOLS (No)
CHAPTER 3. MASTER RESET
Master reset: Clears all the memory and initializes each preset pa-
rameter.
The master reset should be performed by using the following proce-
dure.
dure.
1. Turn off the power (Power OFF). (See Note 1.)
2. Let the ECR be without the memory back up battery.
3. Turn the mode switch to the others of Power-off position.
4. Turn on the power (Power ON). (See Note 2.)
When the master rest is completed, the buzzer sounds intermittently
three times.
three times.
5. Attach the memory back up battery to the ECR.
The master reset can also be accomplished in the following case.
(See Note 3.)
(See Note 3.)
Note 1) Power OFF: Means disconnecting the AC power supply to
the machine.
(Specifically, unplugging the machine.)
(Specifically, unplugging the machine.)
Note 2) Power ON:
Means connecting the AC power to the ma-
chine.
(Specifically, plugging in the machine.)
chine.
(Specifically, plugging in the machine.)
Note 3) In case a power failure occurs when the machine has no
battery installed, the master reset operation is automatically
performed after the power has been restored.
performed after the power has been restored.
CHAPTER 4. HARDWARE DESCRIPTION
1. OUTLINE
•
CPU:
uPD780023A (ROM 24KB, RAM 1024B)
•
KEY BOARD: 30key including PF key
•
MODE SW:
5position slide SW
DISPLAY: 7seg.+DP x 9digit LED (YELLOW GREEN) FRONT only
•
DRAWER:
1ch, no open sensor
•
BUZZER:
1beep, piezo buzzer
•
PRINTER:
M-31(EURO SYMBOL)
2. BLOCK DIAGRAM
3. DISCRIPTION
1) DISPLAY
(Output Timing of STROBE signal)
2) KEYBOARD and MODE SW
MODE SW, KEY MATRIX is follows.
Note: Although the XE-A101 has 30 keys, the keyboard circuit is
actually 32 keys (+) the PF key.
3) BUZZER
The BUZZER is driven by the P75/BUZ signal of the CPU.
Frequency : 4.095kHz
6V
CPU
uPD 780023A
D
Printer
M-31
M-31
RAWER
KE Y
BOARD
&
MODE SW
8. 8. 8. 8. 8. 8. 8.
FRONT display :9digit
POWER
SU PPLY
AC
5V
ST1-
ST4-,ST5
A1
G1,DP1,A2 G2
~
,DP2
KST1
KST8
KR1
KR6
8.
8.
BU ZZER
MA IN
4.19MHz
For Clock
32.768kHz
Battery
5V
ST4-
ST3-
ST2-
ST1-
ST5
ST1-
ST2-
ST3-
ST4-
ST5
1ms
30~100us
Display
strobe
strobe
1
2
3
4
5
SLIDE SW
REG
X/F
Z/PGM
POWER
OFF
22
31
7
15
16
24
25
26
1
2
8
9
10
17
18
19
27
28
3
4
11
12
21
30
5
6
13
14
32
SW1
MODE SW
KST2
KR1
KST3
KST4
KST5
1
2
3
4
5
6
7
13
25
D13
1SS133 KST1
1
2
8
14
D14
1SS133 KST2
11
12
19
9
D15
1SS133 KST3
17
18
3
23
D16
1SS133 KST4
28
24
20
10
D17
1SS133 KST5
30
26
21
4
D18
1SS133 KST6
32
22
15
5
D19
1SS133 KST7
29
31
27
16
D20
1SS133 KST8
KST1
1
2
3
4
5
6
7
8
9
KCN2
KR2 KR6 KR5 KR4 KR3
KEYBOARD
4) REWIND MOTOR
When the rewind motor is driven by the signal of the CPU.
5) DRAWER
DRAWER OPEN signal :Output high signal about 50ms
6) DETECTING "LOW VOLTAGE"
•
Values obtained by AD conversion and averaging
Register value: 138 ( 2.7V) or less
No voltage
139 - 154 ( 2.7V - 3.0V)
Low voltage
more than 154
OK
7) DESTINATION DETECTION port
V version
P66
L
5ms 10ms
15ms
PRINTER
MOTOR
MOTOR
REWIND
MOTOR
MOTOR
4. CPU PORT TABLE
No.
PIN Name
Signal Name
Description
Output/Input
1
P50/A8
RWND
REWIND MOTOR
O
2
P51/A9
DR
To DRAWER
O
3
P52/A10
SA2
DISPLAY SEGMENT
O
4
P53/A11
SB2
DISPLAY SEGMENT
O
5
P54/A12
SC2
DISPLAY SEGMENT
O
6
P55/A13
SD2
DISPLAY SEGMENT
O
7
P56/A14
SE2
DISPLAY SEGMENT
O
8
P57/A15
SF2
DISPLAY SEGMENT
O
9
Vss0
GND
10
Vdd0
VDD
11
P30
ST1-
DISPLAY STROBE N-Ch O.D.
O
12
P31
ST2-
DISPLAY STROBE N-Ch O.D.
O
13
P32
ST3-
DISPLAY STROBE N-Ch O.D.
O
14
P33
ST4-
DISPLAY STROBE N-Ch O.D.
O
15
P34/SI31
ST5
DISPLAY STROBE (H ACTIVE)
O
16
P35/SO31
NU
(GND via 56k)
I
17
P36/SCK31-
NU
(GND via 56k)
I
18
P20/SI30
SA1
DISPLAY SEGMENT
O
19
P21/SO30
SB1
DISPLAY SEGMENT
O
20
P22/SCK30-
SC1
DISPLAY SEGMENT
O
21
P23/RXD0
SD1
DISPLAY SEGMENT
O
22
P24/TXD0
SE1
DISPLAY SEGMENT
O
23
P25/ASCK0
SF1
DISPLAY SEGMENT
O
24
Vdd1
VDD
25
Avss
GND
26
P17/ANI7
VBAT
BATTERY voltage
I
27
P16/ANI6
NU
RESERVE FOR KEY RETURN
I
28
P15/ANI5
KR6
KEY RETURN
I
29
P14/ANI4
KR5
KEY RETURN
I
30
P13/ANI3
KR4
KEY RETURN
I
31
P12/ANI2
KR3
KEY RETURN
I
32
P11/ANI1
KR2
KEY RETURN
I
33
P10/ANI0
KR1
KEY RETURN
I
34
Avref
VCC
35
Avdd
VDD
36
RESET-
RESET-
37
XT2
XT2
32.768Khz Xtal
38
XT1
XT1
32.768Khz Xtal
39
IC/VPP
GND
40
X2
X2
SYSTEM CLOCK
41
X1
X1
SYSTEM CLOCK
42
Vss1
GND
43
P00/INTP0
/POF
POWER OFF
I
44
P01/INTP1
T
From PRINTER
I
45
P02/INTP2
t
From PRINTER
I
46
P03/INTP3/ADTRG
R
From PRINTER
I
47
P70/TI00/TO0
SG1
DISPLAY SEGMENT
O
48
P71/TI01
SDP1
DISPLAY SEGMENT
O
49
P72/TI50/TO50
SG2
DISPLAY SEGMENT
O
50
P73/TI51/TO51
SDP2
DISPLAY SEGMENT
O
51
P74/PCL
NU
O
52
P75/BUZ
BUZ
BUZZER
O
53
P64/RD-
MTR
To PRINTER
O
54
P65/WR-
TRG
To PRINTER
O
55
P66/WAIT-
MSL1
MODEL SELECT1
I
56
P67/ASTB
MSL2
MODEL SELECT2
I
57
P40/AD0
KST1
KEY STROBE
O
58
P41/AD1
KST2
KEY STROBE
O
59
P42/AD2
KST3
KEY STROBE
O
60
P43/AD3
KST4
KEY STROBE
O
61
P44/AD4
KST5
KEY STROBE
O
62
P45/AD5
KST6
KEY STROBE
O
63
P46/AD6
KST7
KEY STROBE
O
64
P47/AD7
KST8
KEY STROBE
O
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