Sharp ER-A771 (serv.man3) Service Manual ▷ View online
ER-A771VS
SERVICE PRECAUTION
3 – 1
CHAPTER 3. SERVICE PRECAUTION
1. IPL FROM P-ROM VIA ER-A7RS2
1) Install the two master ROMs to the IC socket (IC1, IC2) on the ER-
A7RS2.
Master ROM -1 : VHI27801RBJxx
Master ROM -2 : VHI27801RBKxx
2) IPL sitch on the ER-A7RS2 : Set the IPL SW to ON position.
3) Install the ER-A7RS2 to the ER-A771. (The ER-A771 power should
be turned OFF.)
4) Turned on the power of the ER-A771.
5) The buzzer sounds intermittently during the running of IPL and the
program finishes after the buzzer gives five beeps at short intervals.
6) Turn OFF the power of the ER-A771.
7) Remove the ER-A7RS2 from the ER-A771.
8) Perform the Master reset.
2. ER-A771 UTILITY TOOLS
2-1. OUTLINE
This Specification document describes the explanation about
"POSUTILITYTOOL.EXEhand "02FD.EXE".
"POSUTILITYTOOL.EXEhand "02FD.EXE".
"POSUTILITYTOOL.EXE"and "02FD.EXE" works on Windows 95/98 of
PC and they have the following
Functions by connecting ER-A771 with RS232.
2-2. ENVIRONMENT
PC and ER-A771 are connected by RS232.
Connect the CH2 port of the ER-A771 to the RS-232 interface of the
PC.
RS232 Cable Connecting:
2-3. PROCEDURE
(1) POS UTILITY TOOL
IPL SW
OFF
ON
IC2 ROM2
IC1 ROM1
MASTER
P-ROM -2
P-ROM -2
MASTER
P-ROM -1
P-ROM -1
POSUTILITYTOOL.EXE: IPL of ER-A771 Program Object
02FD.EXE:
All RAM Data Upload/Download
(PC software tool instead of the current ER-
02FD.)
RS-232
PC
POS
CH2
[PC]
3 TXD
3 TXD
2 RXD
2 RXD
5 S.G.
5 S.G.
[ER-A770]
No
Procedure on P.C. side
No
Procedure on ER-A771 side
1
Install "POSUTILITYTOOL.EXE" on the P.C.
2
Turn OFF the power.
3
Select "IPL Mode".
Set "IPL Switch" of ER-A771 to "ON".
4
Turn ON the power.
5
Starting of "IPL Mode".
ER-A771 shows
ER-A771 shows
"IPL from Serial I/O"
IPL SW
OFF
ON
IPL from Serial I/O
ER-A771VS
SERVICE PRECAUTION
3 – 2
6
Connect P.C. and ER-A771 (CH2) via RS232. (Fig 1)
7
Execute "POSUTILITUTOOL.EXE" on P.C.
*Don't execute the other Software at the same time.
8
Select the ROM object Files by "Add Files.." button.
9
Push "SEND" button.
Program data is sent to ER-A771 automatically.
Program data is sent to ER-A771 automatically.
9
Program data is received from P.C. automatically.
ER-A771 shows
ER-A771 shows
10
When sending is completed,
the initial Window is shown after "Complete" window.
10
ER-A771 shows
"Completed."
11
Turn OFF the power.
12
Select "Normal Mode".
Set "IPL switch" to "OFF".
(Ref. Hardware manual)
13
Execute "Service Reset" on ER-A771.
No
Procedure on P.C. side
No
Procedure on ER-A771 side
IPL from IR
Connected IRDA 115200
21 22 23 24 25 26 27 28
Connected IRDA 115200
21 22 23 24 25 26 27 28
IPL from Serial I/O
Connected IRDA 115200
21 22 23 24 25 26 27 28
29 2A 2B 2C 2D 2E 2F
Completed.
Connected IRDA 115200
21 22 23 24 25 26 27 28
29 2A 2B 2C 2D 2E 2F
Completed.
IPL from Serial I/O
Connected IRDA 115200
30 31 32 33 34 35 36 37
38 39 3A 3B 3C 3D 3E 3F
Completed.
Connected IRDA 115200
30 31 32 33 34 35 36 37
38 39 3A 3B 3C 3D 3E 3F
Completed.
ER-A771VS
SERVICE PRECAUTION
3 – 3
(2) 02FD
No
Procedure on P.C. side
No
Procedure on ER-A771 side
1
Install "02FD.EXE" on the P.C.
ALL RAM Data UpLoad : Go to "2"
ALL RAM Data DownLoad : Go to "9"
2
ALL RAM Data UpLoad
Connect P.C. and ER-A771 (CH2) via RS232. (Fig 1)
2
Enter the SRV mode.
Select " 2 SETTING ".
Select " 14 BACKUP SEND"
3
ER-A771 shows
4
Execute "02FD.EXE" on P.C.
*Don't execute the other Software at the same time.
*Don't execute the other Software at the same time.
5
Set the Communication method by "Setting" Button.
Push "OK" Button.
6
Push "Receive Start" Button.
And Select the Receiving File.
7
Communication starts.
7
Push TL key. ER-A771 shows
8
UpLoad is completed.
The initial Window is shown.
Push "Exit" Button.
8
UpLoad is completed.
The SETTING menu is shown.
9
ALL RAM Data UpLoad
Connect P.C. and ER-A771 (CH2) via RS232. (Fig 1)
9
Enter the SRV mode.
Select " 2 SETTING".
Select " 15 BACKUP RECEIVE"
SEND DATA ALL RAM
SPEED PROGRAMMED SPEED
BACKUP SEND
SENDING 00000
ER-A771VS
SERVICE PRECAUTION
3 – 4
3. NOTE FOR HANDLING OF LCD
• The LCD elements are made of glass. BE careful not to give them strong mechanical shock, or they may be broken. Use extreme care not to break
them.
• If the LCD element is broken and the liquid is leaked, do not lick it. If the liquid is attached to your skin or cloth, immediately clean with soap.
• Use the unit under the rated conditions to prevent against damage.
• Be careful not to drop water or other liquid on the display surface.
• The reflection plate and the polarizing plate are easily scratched. BE careful not to touch them with a hard thing such as glass, tweezers. Never hit,
push, or rub the surface with hard things.
• When installing the unit, be careful not to apply stress to the LCD module. If an excessive stress is applied, abnormal display or uneven color may
result.
10
ER-A771 shows
Push TL key.
11
Execute "02FD.EXE" on P.C.
*Don't execute the other Software at the same time.
*Don't execute the other Software at the same time.
12
Set the Communication method by "Setting" Button.
Push "OK" Button.
13
Push "Transmit Start" Button.
And Select the Sending File.
And Select the Sending File.
14
Communication starts.
14
ER-A771 shows
15
DownLoad is completed.
The initial Window is shown.
The initial Window is shown.
Push "Exit" Button.
15
DownLoad is completed.
The SETTING menu is shown.
The SETTING menu is shown.
No
Procedure on P.C. side
No
Procedure on ER-A771 side
BACKUP RECEIVE
SPEED PROGRAMMED SPEED
RECEIVING 00000
Click on the first or last page to see other ER-A771 (serv.man3) service manuals if exist.