Sharp ER-A750 (serv.man4) Service Manual ▷ View online
SERVICE MANUAL
CODE: 00ZERA750VSME
MODEL
ER-A750
(For "V" version)
CHAPTER 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
CHAPTER 2. OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
CHAPTER 3. SERVICE PRECAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
CHAPTER 4. SRV RESET (Program Loop Reset) and switch to SRV mode . . . . . . 4-1
CHAPTER 5. MASTER RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
CHAPTER 6. DIAGNOSTICS SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
CHAPTER 7. CIRCUIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
CHAPTER 8. CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
PARTS GUIDE
CONTENTS
SHARP CORPORATION
Parts marked with "
!
" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones
for maintaining the safety and performance of the set.
CHAPTER 1. SPECIFICATION
1. Apearance
External view
Front view
Rear view
2. Rating
External dimensions
290 (W)
×
365 (D)
×
262 (H) mm
Weight
5.1 kg
Power source
Official voltage and frequency
Power consumption
Stand-by: 22W
Operating: 26W (max.)
Operating: 26W (max.)
Working temperatures 0 to 40°C
3. Keyboard
1) Standard keyboard layout
2) Key top name
1
Standard key top
KEY TOP
DESCRIPTION
0
∼
9,000
Numeric keys
•
Decimal point key
CL
Clear key
⊗
Multiplication key
VAT SHIFT
Value-added tax shift key
RF
Refund key
VOID
Void key
PLU / SUB
Price lookup / Subdepartment key
1
∼
96
Direct price look up key
L1
∼
L3
PLU level shift 1
∼
3 keys
FINAL
Tentative finalization key
MISC FUNC
Miscellaneous function key
MODE
Mode menu key
ENTER
Enter key
AUTO1,2
Automatic sequencing 1 and 2 keys
CR#
Credit menu key
CH#
Check menu key
ST
Subtotal key
TL
Total key
PAGE UP
Page up key
PAGE DOWN
Page down key
→
Cursor right key
←
Cursor left key
↑
Cursor up key
↓
Cursor down key
CANCEL
Cancel key
WITH
With key
WITH OUT
Without key
TEXT1
∼
6
Direct text 1
∼
6 keys
PRICE SHIFT 1
∼
3
Price level shit 1
∼
3 keys
GC RCPT
Guest check receipt key
GUEST #
Guest number entry key
NC
New check key
GLU
Guest lookup key
NBAL
New balance key
TRANS OUT
Transfer out key
TRANS IN
Transfer in key
SLIP
Slip print key
BS
Bill separation key
BT
Bill totalize / Bill transfer key
Operator display
Keyboard
AC cord
Power switch in
sure that the power
switch is placed in the
OFF position prior to
connecting AC power
sure that the power
switch is placed in the
OFF position prior to
connecting AC power
Left side of
the machine
the machine
IR receiver cover
Brightness
control
control
Contrast control
Power switch
Customer
Display
Display
Rear cover
82
73
64
55
46
38
30
7
1
83
74
65
56
47
31
39
8
2
84
75
66
57
48
40
32
9
3
85
76
67
58
49
41
33
10
4
86
77
68
59
50
42
34
11
5
87
78
69
60
51
43
35
12
6
88
79
70
61
52
44
36
89
80
71
62
53
45
90
81
72
63
54
37
TRANS
7
4
1
0
8
5
2
00
9
6
3
MODE
91
92
93
94
95
96
TEXT
4
26
27
28
29
25
18
19
20
21
22
23
24
14
15
16
17
13
00
0
ST
TL
FINAL
NBAL
GLU
NC
TEXT
5
TEXT
6
AUTO
1
AUTO
2
L1
L2
L3
G C
RCPT
SLIP
TEXT
3
TEXT
2
TEXT
1
GUEST
#
VAT
SHIFT
RF
WITH
WITH
OUT
PAGE
UP
MISC
FUNC
OUT
BS
BT
VOID
ENTER
(CANCEL)
PAGE
DOWN
PRICE
SHIFT3
SHIFT3
PRICE
SHIFT2
PRICE
SHIFT1
PLU/
SUB
CH
#
CR
#
CL
TRANS
IN
1 – 1
2
Optional key top
KEY TOP
DESCRIPTION
97
∼
135
Direct price look up keys
1
∼
99
Department keys
%1
∼
%9
Percent 1
∼
9 keys
d
1
∼
d
9 keys
Discount 1
∼
9 keys
CR1
∼
CR8
Credit 1
∼
8 keys
CA2
Cash total 2 key
RA1,RA2
Received on account 1 and 2 keys
PO1,PO2
Paid out 1 and 2 keys
AUTO3
∼
AUTO25
Automatic sequencing 3
∼
25 keys
CH1
∼
CH4
Check 1
∼
4 keys
CASH TIP
Cash tip key
TIP PAID
Tip paid key
#
Non-add code entry key
NS
No-sale key
MGR#
Manager code entry key
OPEN TARE
Tare entry Key
REPEAT
Repeat entry key
PERSON#
Person number entry key
IND. PAYMENT
Individual payment key
RCP. SW
Receipt ON / OFF key
SCALE
Scale entry key
TEXT 7
∼
10
Text 7
∼
10 keys
EX1
∼
9
Foreign currency exchange 1
∼
9 keys
AMT
Amount entry key
DRV NC
New check 2 key (For drive-thruogh)
DRV GLU
Guest look up 2 key (For drive-
through)
through)
VAT
Value-added tax key
NON-CASH TIP
Non-cash tip key
1/2
1/2 key
CLERK#
Clerk code entry key
RCPT
Receipt print key
PINT
Pint key
DEPO(+)
Deposit plus entry key
DEPO(–)
Deposit minus entry key
TEXT#
Text number key
EMP#
Employee key
TIME IN
Time in key
SBTL VOID
Subtotal void key
TIME OUT
Time out key
BREAK IN/OUT
Break in/out key
VP
Validation print key
RTN
Return key
DEPT SHIFT 1
∼
4
Department shift 1
∼
4 keys
RCPT SHIFT
Receipt shift key
DIFFER ST
Difference subtotal key
C.BILL
Cumulated bill key
GC COPY
Guest check copy key
EX#
Foreign currency exchange menu key
VIP
VIP sale key
H.T.
Hotel transfer key
CLK1
∼
10
Clerk entry 1
∼
10 keys
3) Text programming key sheet layout
4) Blank key sheet layout
PAGE
DOWN
(INS)
BACK
W
S
E
D
$
R
F
T
G
Y
H
U
J
I
K
O
L
Z
X
C
V
B
N
M
/
_
-
}
{
+
]
[
?
>
<
SPACE
(SPACE)
7
4
1
0
8
5
2
00
9
6
3
MODE
00
0
ST
TL
PAGE
UP
CL
P
A
Q
(DC)
#
1/2
1/4
3/4
1
2
3
4
5
6
7
(SPACE) (SPACE) (SPACE) (SPACE) (SPACE) (SPACE)
(SPACE)
(
(DEL)
(CANCEL)
(
*
,
.
&
=
%
@
8
9
0
^
Prev
REACORD
NE XT
REACORD
;
:
Ñ
Å
Ö
Ü
Ø
Ì
Í
¤
²
a
a`
a
`
e
e
e
ß
!
³
Ç
u
u
u
`
Æ
Ä
¹
R
(ENTER) (RECALL)
C
£
I
y
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
(
1 – 2
3. Display
1) Operator display
•
Screen example 1 (REG mode)
Prive level shift indicator (P1-P3)
:
Shows the PLU price level currently selected.
PLU level shift indicator (L1-L3)
:
Shows the PLU level currently selected.
Stock alarm indicator (!)
:
Appears when the stock of the PLU which you entered is zero or negative.
Department shift status indicator (D1-D4)
:
Shows the department shift status currently selected.
VAT shift status indicator (V)
:
Appears when the VAT status is shifted.
Receipt ON/OFF status indicator (R)
:
Appears when the receipt ON-OFF function signs OFF.
Sentinel mark (X)
:
Appears in the lower right corner of the screen when the cash in drawer exceeds a programmed
sentinel amount.
The sentinel check is performed for the total cash in drawer.
sentinel amount.
The sentinel check is performed for the total cash in drawer.
•
Screen example 2 (PGM mode)
Time
Clerk code
Sales amount including taxes
Mode name
Numeeric entry:Entered figures appear at the cursor position.
Received media type
Received media type
Window:In the REG mide,the window shows sales information you have just entered such as items
and media types.
Time
Clerk code
Mode name
Window
In the PGM mode.
programmable items are listed.
programmable items are listed.
Double-size character mode indicaator(W):
Apperars when the double-size character
mode is selected during text programming.
mode is selected during text programming.
Caps lock indicator(A/a):
The upper-case letter "A" apperas when
Capss Lock is on, and the lower-case
letter "a" appears when Caps Lock is off
during text programming.
The upper-case letter "A" apperas when
Capss Lock is on, and the lower-case
letter "a" appears when Caps Lock is off
during text programming.
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