DOWNLOAD Sharp ER-A770 (serv.man4) Service Manual ↓ Size: 17.65 MB | Pages: 94 in PDF or view online for FREE

Model
ER-A770 (serv.man4)
Pages
94
Size
17.65 MB
Type
PDF
Document
Service Manual
Brand
Device
EPOS / ERA770 V2 (With Circuit Descriptins)Service Manuals
File
er-a770-sm4.pdf
Date

Sharp ER-A770 (serv.man4) Service Manual ▷ View online

MODEL
ER-A770
(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
CHAPTER 9. PWB LAYOUT.......................................................................9 - 1
PARTS GUIDE
CONTENTS
Parts marked with "
" are 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.
SHARP CORPORATION
This document has been published to be used 
for after sales service only.
The contents are subject to change without notice.
   SERVICE MANUAL
CHAPTER 1. SPECIFICATION
1. Apearance
External view
Front view
Rear view
2. Rating
External dimensions
290 (W)   365 (D)   282 (H) mm
Weight
5.5 kg
Power source
Official voltage and frequency
Power consumption
Stand-by: 26W
Operating: 32W (max.)
Working temperatures
0 to 40 °C
3. Keyboard
1) Standard keyboard layout
2) Key top name
Standard key top
KEY TOP
DESCRIPTION
0 ~ 9,000,00
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
OPENED GLU
Opened GLU list key
GLU
Guest lookup key
NBAL
New balance key
TRANS OUT
Transfer out key
TRANS IN
Transfer in key
Operator display
Keyboard
Switch cover
Contrast control
Clerk switch
Left side
of the
machine
Power switch
Insure that the power 
switch is placed in the 
OFF position prior to 
connecting AC power.
Brightness
control
Power switch
Rear cover
12
11
10
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
36
35
34
33
32
31
30
29
28
27
26
25
48
47
46
45
44
43
42
41
40
39
38
37
60
59
58
57
56
55
54
53
52
51
50
49
72
71
70
69
68
67
66
65
64
63
62
61
84
83
82
81
80
79
78
77
76
75
74
73
96
95
94
93
92
91
90
89
88
87
86
85
TEXT
1
TEXT
2
TEXT
3
TEXT
4
TEXT
5
TEXT
6
MISC
FUNC
GC
RCPT
TRANS
OUT
TRANS
IN
VAT
SHIFT
WITH
OUT
PRICE
SHIFT3
PRICE
SHIFT2
PRICE
SHIFT1
ENTER
CANCEL
ST
TL
BS
BT
VOID
RF
GLU
WITH
L1
L2
L3
SLIP
FINAL
NBAL
GUEST
#
CR
#
CH
#
PAGE
UP
PAGE
DOWN
PLU/
SUB
AUTO
1
AUTO
2
MODE
•  
00
0 000
CL
7
8
9
4
5
6
1
2
3
OPENED
GLU
KEY TOP
DESCRIPTION
SLIP
Slip print key
BS
Bill separation key
BT
Bill totalize / Bill transfer key
Optional key top
KEY TOP
DESCRIPTION
97 ~ 135
Direct price look up keys
1 ~ 99
Department keys
%1 ~ %9
Percent 1 ~ 9 keys
 1 ~ 
 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 ~ 40
Text 7 ~ 40 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)
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
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
CHECK PRINT
Check print key
BACK SPACE
Back space key
DEL
Delete key
L4 ~ L10
PLU level shift 4 through 10 keys
KEY TOP
DESCRIPTION
PRICE SHIFT 4 ~
PRICE SHIFT 7
Price level shift 4 through 7 keys
PLU MENU 01 ~
PLU MENU 50
PLU menu 1 through 50 keys
WASTE
WASTE mode key
WAIT
WAIT mode key (for drive-thru)
RECALL
Re-call key (for drive thru)
C_NEXT
Condiments next key
D_DISP
Drive-thru menu key
E. BILL
Entertainment bill key
RC TTL
Recall TOTAL STATUS key
3) Text programming key sheet layout
: The shaded area contains the character keys which are
used for programming characters.
KEY TOP
DESCRIPTION
SHIFT
Used for programming characters. For more
information about programming characters,
see the section "How to Enter Alphanumeric
Characters."
DC
INS
DEL
BACK SPACE
[
], [
], [   ], [   ] Used to move the cursor.
ENTER
Used to program each setting.
TL
Used to finalize programming.
CANCEL
Used to cancel programming and to get back
to the previous screen.
MODE
Used for changing the operating mode.
PREV RECORD
Used to go back to the previous record, e.g.,
from the department 2 programming window
back to the department 1 programming window.
NEXT RECORD
Used to go to the next record, for example, in
order to program unit prices for sequential
departments.
PAGE DOWN
Used to scroll the window to go to the next
page.
PAGE UP
Used to scroll the window to go back to the
previous page.
CL
Used to clear the last setting you have
programmed or clear the error state.
Used to toggle between two or more options.
ST
Used to list those options which you can toggle
by the        key.
RECALL
Used to call up a desired code.
Numeric keys
Used for entering figures.
BACK
SPACE
Prev.
Record
Next
Record
(CANCEL)
(SHIFT)
(SHIFT)
(SPACE) (SPACE) (SPACE) (SPACE) (SPACE) (SPACE)
(ENTER)
PAGE
DOWN
PAGE
UP
(MODE)
(INS)
(DEL)
(RECALL)
(DC)
•  
A
Ä 
Ö 
Ü 
ß  
H
J
K
L
E
R
T
Y
â 
à 
á 
ê  
è  
é  
Ñ 
Ø 
_
– 
-
¿  
1
2
3
1/2
1/4
3/4
Æ 
û 
>>
<<
ù
ú 
Ç 
Å 
£ 
3
2
1
4
5
6
7
8
9
0
© 
® 
ï  
ÿ 
 
?
”  
¤ 
´  
 
ˆ  
O
P
/
!
]
[
#
$
&
=
÷
 
Z
M
CL
00
0 000
ST
TL
∂  
{
}
ì
í
7
8
9
4
5
6
1
2
3
X
C
V
S
D
F
G
B
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;
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W
Q
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Helvetica/ Helvetica-Condensed/ Century-Schoolbook/ Symbol & OriginalFonts: (RingWorld2/RingFont2/Pa
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4) Blank key sheet layout
3. Display
1) Operator display
Screen example 1 (REG mode)
Prive level shift indica-
tor (P1-P7)
:
Shows the PLU price level currently
selected.
PLU level shift indicator
(L01-L10)
:
Shows the PLU level currently se-
lected.
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 cur-
rently selected.
VAT shift status indica-
tor (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.
Screen example 2 (PGM mode)
Screen save mode
When you want to save the electric power or save the display’s
life, use the screen save function. This function can turn the LCD
backlight off when any server does not operate the POS terminal
for an extended period of time. You can program the time for
which your POS terminal should keep the normal status (in which
the backlight is "ON") before it goes into the screen save mode.
To go back to the normal mode, press any key.
Device type
LCD display
Dot format
320(W)   240(H) Full dot
Dot size
0.33   0.33 mm
Dot space
0.03 mm
Dot color
White
Back color
Dark blue
Weight
180 g
2) Display adjustment
You can adjust the brightness and contrast of the display by using the
corresponding controls.
Mode name
Clerk code
Time
Numeric entry: 
Entered figures appear at 
the cursor position.
Window: 
In the REG mode, the window shows sales information you have
just entered such as items and media types.
Received media type
Sales amount including taxes
Clerk code
Mode name
Time
Double-size character mode indicator (W):
Appears when the double-size character 
mode is selected during text programming.
Window
In the PGM mode, 
programmable items are listed.
Caps lock indicator (A/a): 
The upper-case letter "A" appears when
Caps Lock is on, and the lower-case
letter "a" appears when Caps Lock is off
during text programming.
Contrast control
Turning the control backwards
darkens the display and turning
it forwards lightens the display.
Brightness control
Turning the control backwards
darkens the display and turning it
forwards brightens the display.
Page of 94
Display

Sharp ER-A770 (serv.man4) Service Manual ▷ Download

  • DOWNLOAD Sharp ER-A770 (serv.man4) Service Manual ↓ Size: 17.65 MB | Pages: 94 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp ER-A770 (serv.man4) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp ER-A770 (serv.man4) EPOS. Information contained in Sharp ER-A770 (serv.man4) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.