Read Sharp ER-A770 (serv.man8) Service Manual online
3) IPL from P-ROM via ER-A7RS
(1) Install the two master ROMs to the IC socket (IC12 , IC13) on the
ER-A7RS.
Master ROM -1 : VHI27801RAFxx
Master ROM -2 : VHI27801RAGxx
Master ROM -2 : VHI27801RAGxx
(2) IPL sitch on the ER-A7RS : Set the IPL SW to ON position.
(3) Install the ER-A7RS to the ER-A770. (The ER-A770 power should
be turned OFF.)
(4) Turned on the power of the ER-A770.
(5) The buzzer sounds intermittently during the running of IPL and the
program finishes after the buzzer gives five beeps at short inter-
vals.
vals.
(6) Turn OFF the power of the ER-A770.
(7) Remove the ER-A7RS from the ER-A770.
(8) Perform the Master reset.
3. ER-A770 Utility tools
1. Outline
This Specification document describes the explanation about "POSU-
TILITYTOOL.EXEhand "02FD.EXE".
TILITYTOOL.EXEhand "02FD.EXE".
"POSUTILITYTOOL.EXE"and "02FD.EXE" works on Windows 95/98
of PC and they have the following
Functions by connecting ER-A770 with RS232.
of PC and they have the following
Functions by connecting ER-A770 with RS232.
POSUTILITYTOOL.EXE : IPL of ER-A770 Program Object
02FD.EXE
: All RAM Data Upload/Download
(PC software tool instead of the current
ER-02FD.)
ER-02FD.)
2. Environment
PC and ER-A770 are connected by RS232.
Connect the CH2 port of the ER-A770 to the RS-232C interface of the
PC.
PC.
RS232 Cable Connecting:
3. Procedure
3.1 POS UTILITY TOOL
No
Procedure on P.C. side
No
Procedure on ER-A770 side
1
Install "POSUTILITYTOOL.EXE" on the P.C.
2
Turn OFF the power.
3
Select "IPL Mode".
Set "IPL Switch" of ER-A770 to "ON".
(Ref. Hardware manual)
Set "IPL Switch" of ER-A770 to "ON".
(Ref. Hardware manual)
4
Turn ON the power.
5
Starting of "IPL Mode".
ER-A770 shows
"IPL from Serial I/O"
ER-A770 shows
"IPL from Serial I/O"
6
Connect P.C. and ER-A770 (CH2) via RS232. (Fig 1)
IPL SW
OFF
ON
IC13 ROM2
IC12 ROM1
MASTER
P-ROM -2
P-ROM -2
MASTER
P-ROM -1
P-ROM -1
RS-232
PC
POS
CH2
Fig. 1 Connection between PC and ER-A770
[PC]
3 TXD
3 TXD
2 RXD
2 RXD
5 S.G.
5 S.G.
[ER-A770]
IPL from Serial I/O
>>>>> USE FONT <<<<<
Helvetica/ Helvetica-Condensed/ Century-Schoolbook/ Symbol & OriginalFonts: (RingWorld2/RingFont2/Pa
Symbol/PartsCod)
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