Sharp XE-A102 - Preparing the Cash Register; Installing the Cash Register; Resetting the Cash Register

XE-A102 HARDWARE DESCRIPTION
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CHAPTER 4. HARDWARE DESCRIPTION
1. OUTLINE
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-A102 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
• CPU : uPD780023A (ROM 24KB, RAM 1024B)
• KEY BOARD : 30key including PF key
• MODE SW : 5position slide SW
• DISPLAY
: 7seg.+DP x 8digit LED (YELLOW GREEN) FRONT only
• DRAWER : 1ch, no open sensor
• BUZZER : 1beep, piezo buzzer
• PRINTER : M-31(no EURO SYMBOL) (U)
M-31V (V)
6V
CPU
uPD780023A
D
Printer
M-31
RAWER
KEY
BOARD
&
MODE SW
8. 8. 8. 8. 8. 8. 8.
FRONT display :8digit
POWER
SUPPLY
AC
5V
ST1-
〜
ST4-,ST5
A1
〜
G1,DP1,A2 G2~,DP2
KST1
〜
KST8
KR1
〜
KR6
8.
BUZZER
MA IN
4.19MHz
For Clock
32.768kHz
Battery
5V
ST4-ST5- (v) ST3- ST2- ST1-
ST1-
ST2-
ST3-
ST4-
1ms
30~100us
Display
strobe
SW1
MODE SW
KST2
KR1
KST3
KST4
KST5
1
2
3
4
5
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
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
1
2
3
4
5
Rotary SW
REG
POWER
OFF
VOID
X/
X/Flash
F
/PGM
Z
(u)
(v)