Sharp ER-A570 (serv.man6) Service Manual ▷ View online
<<When sliding backwards>>
Fig. 5
CHAPTER 4. REMOVING THE TOP
CABINET
1. Removing the top cabinet
Fig. 1
1) Open the printer cover
1
.
2) Remove the ribbon cover
2
.
Lift the left end of the ribbon cover and slide it to the left.
3) Lift the pop-up display and rotate as illustrated above.
4) Remove the three screws
3
suited on the lower cabinet.
5) Remove the grounding wire
4
.
Fig. 2
6) Remove the top cabinet.
As illustrated, lift the top cabinet in the direction of the arrow C,
slide it in the direction of the arrow D and lift it in the direction of
the arrow E.
slide it in the direction of the arrow D and lift it in the direction of
the arrow E.
2. Replacing the top cabinet
Install the top cabinet in the reverse order of removing. Before install-
ing, make sure that each connector is connected securely and that
the grounding wire is secured.
ing, make sure that each connector is connected securely and that
the grounding wire is secured.
541
1
3
2
4
3
E
D
C
3
CHAPTER 5. EXPANSION RAM CHIP
(ER-01RA, ER-02RA)
AND EXPANSION RAM
BOARD (ER-01MB,
ER-02MB)
AND EXPANSION RAM
BOARD (ER-01MB,
ER-02MB)
1. Outline
The following expansion RAM chips are available for the ER-A570.
ER-01RA:
32KB SRAM chip
ER-02RA:
128KB SRAM chip
ER-01MB:
Expansion RAM board
Standard 128K bytes
Max. 512K bytes (a maximum of three ER-02RA
RAM chips can be mounted on the RAM board.)
Standard 128K bytes
Max. 512K bytes (a maximum of three ER-02RA
RAM chips can be mounted on the RAM board.)
ER-02MB:
Expansion RAM board
1 M bytes
1 M bytes
Note: Either the ER-01RA or the ER-02RA can be mounted on the
main PWB of the ER-A570. When installing the ER-01MB or
ER-02MB the ER-02RA must be mounted on the main PWB of
the ER-A570.
ER-02MB the ER-02RA must be mounted on the main PWB of
the ER-A570.
2. Installation procedure
Before working on the installation, turn off the power switch on the
ECR and unplug the AC cord from the AC outlet.
Also save the memory contents via the serial interface before pro-
ceeding to the installation work.
ECR and unplug the AC cord from the AC outlet.
Also save the memory contents via the serial interface before pro-
ceeding to the installation work.
1
ER-01RA and ER-02RA
1) Remove the top cabinet.
2) Insert the expansion RAM chip onto the socket RAM2 on the main
PWB. (Fig.1, 2)
<<ER-01RA>> : 28pins.
Fig. 1
<<ER-02RA>> : 32pins.
Fig. 2
The number of pins are different between the ER-01RA (28 pins) and
the ER-02RA (32 pins). Observe the correct position for insertion of
the chip. (FIg.1, 2)
the ER-02RA (32 pins). Observe the correct position for insertion of
the chip. (FIg.1, 2)
Fig. 3
3) Install the top cabinet.
4) Master reset the ER-A570.
5) Load the data in memory which had been saved.
6) Program reset the ER-A570.
2
ER-01MB and ER-02MB
1) Remove the top cabinet.
2) Mount the spacer
1
on the main PWB unit and place the ER-01MB
or ER-02MB expansion RAM board on the RAM connector and
the spacer. (Fig. 4)
the spacer. (Fig. 4)
Fig. 4
ER-01RA(28pins)
ER-02RA(32pins)
ER-02MB
ER-01MB
1
PSPAZ6706RCZZ
or
4
NOTE: When attaching the ER-01MB/02MB, attach the ER-02RA to
the main PWB.
3) Replace the top cabinet.
3
Mounting the ER-02RA on the ER-01MB
1) Remove the top cabinet.
2) Install the ER-02RA on the ER-01MB above the main PWB.
Mount the ER-02RA in the RAM sockets as indicated below. (Fig.
5)
5)
•
1st chip in the RAM2 socket
•
2nd chip in the RAM3 socket
•
3rd chip in the RAM4 socket
Fig. 5
Note: 1) When inserting the ER-02RA into the IC socket on the
ER-01MB, hold the ER-01MB by hand to prevent it from
warping.
warping.
3) Replace the top cabinet.
3. Operation test
1) Option RAM test
1
Key operation
20X
→
TL (X : 0~6)
JOB
#NO.
RAM NO.
Memory to be checked
Address
area to be
checked
200 Option RAM
(main)
ER-01RA
1E0000H
(
1E7FFFH
201 Option RAM
(main)
ER-02RA
1E0000H
(
1FFFFFH
202 ER-01MB
RAM1
ER-02RA+ER-01MB
1E0000H
(
21FFFFH
203 ER-01MB
RAM2
ER-02RA+
(ER-01MB+ER-02RA)
1E0000H
(
23FFFFH
204 ER-01MB
RAM3
ER-02RA+
(ER-01MB+ER-02RA
✕
2)
1E0000H
(
25FFFFH
205 ER-01MB
RAM4
ER-02RA+
(ER-01MB+ER-02RA
✕
3)
1E0000H
(
27FFFFH
206 ER-02MB
ER-02RA+ER-02MB
1E0000H
(
2FFFFFH
2
Content
The following check are performed for the optional RAM. Do not
change the memory contents before and after this check JOB.
The following process is performed for memory address to be
checked.
The following check are performed for the optional RAM. Do not
change the memory contents before and after this check JOB.
The following process is performed for memory address to be
checked.
PASS1: memory data save
PASS2: Data "00H" write
PASS3: Data "00H" read and comparison, data "55H" write
PASS4: Data "55H" read and comparison, data "AAH" write
PASS5: Data "AAH" read and comparison
PASS6: Memory data restore
PASS2: Data "00H" write
PASS3: Data "00H" read and comparison, data "55H" write
PASS4: Data "55H" read and comparison, data "AAH" write
PASS5: Data "AAH" read and comparison
PASS6: Memory data restore
If a compare error is found in the check sequence from PASS1 to
PASS6, error print (error code E1) is performed. If there is no error
found to the end of the last address, the operation is completed
normally.
PASS6, error print (error code E1) is performed. If there is no error
found to the end of the last address, the operation is completed
normally.
Then the following address check is performed by judging the
option chip to be integrated. The check point addresses are as
follows:
option chip to be integrated. The check point addresses are as
follows:
Check
Address
ϑΟΒ200 ϑΟΒ201 ϑΟΒ202 ϑΟΒ203 ϑΟΒ204 ϑΟΒ205 ϑΟΒ206
1E0000H
♠
♠
♠
♠
♠
♠
♠
1E0001H
♠
♠
♠
♠
♠
♠
♠
1E0002H
♠
♠
♠
♠
♠
♠
♠
1E0004H
♠
♠
♠
♠
♠
♠
♠
1E0008H
♠
♠
♠
♠
♠
♠
♠
1E0010H
♠
♠
♠
♠
♠
♠
♠
1E0020H
♠
♠
♠
♠
♠
♠
♠
1E0040H
♠
♠
♠
♠
♠
♠
♠
1E0080H
♠
♠
♠
♠
♠
♠
♠
1E0100H
♠
♠
♠
♠
♠
♠
♠
1E0200H
♠
♠
♠
♠
♠
♠
♠
1E0400H
♠
♠
♠
♠
♠
♠
♠
1E0800H
♠
♠
♠
♠
♠
♠
♠
1E1000H
♠
♠
♠
♠
♠
♠
♠
1E2000H
♠
♠
♠
♠
♠
♠
♠
1E4000H
♠
♠
♠
♠
♠
♠
♠
1E8000H
—
♠
♠
♠
♠
♠
♠
1F0000H
—
♠
♠
♠
♠
♠
♠
200000H
—
—
♠
♠
♠
♠
♠
210000H
—
—
♠
♠
♠
♠
♠
220000H
—
—
—
♠
♠
♠
♠
240000H
—
—
—
—
♠
♠
♠
260000H
—
—
—
—
—
♠
♠
280000H
—
—
—
—
—
—
♠
"
♠
" in the table shows that the check point address in the horizon-
tal column is valid, and "—" shows it is invalid.
When any error occurs in this address check, error code E2 is
printed.
When any error occurs in this address check, error code E2 is
printed.
3
Check the following items.
Check the termination print.
Check the termination print.
4
Test termination
The test terminates after printing the termination printout.
The test terminates after printing the termination printout.
Termination print
Normal termination
20X
Abnormal termination
EY– – – –
20X
❈❈❈❈❈❈
20X: JOB # (200~206)
Y:
Y:
Error code
Note: When an error occurs error print is performed and the error
address is displayed in position
❈❈❈❈❈❈
in hexadecimal.
5
2) Option RAM address test
1
Key operation
30X
→
TL (X: 0~6)
JOB
#NO.
RAM NO.
Memory to be checked
Address
area to be
checked
300 Option RAM
(main)
ER-01RA
1E0000H
(
1E7FFFH
301 Option RAM
(main)
ER-02RA
1E0000H
(
1FFFFFH
302 ER-01MB
RAM1
ER-02RA+ER-01MB
1E0000H
(
21FFFFH
303 ER-01MB
RAM2
ER-02RA+
(ER-01MB+ER-02RA)
1E0000H
(
23FFFFH
304 ER-01MB
RAM3
ER-02RA+
(ER-01MB+ER-02RA
✕
2)
1E0000H
(
25FFFFH
305 ER-01MB
RAM4
ER-02RA+
(ER-01MB+ER-02RA
✕
3)
1E0000H
(
27FFFFH
306 ER-02MB
ER-02RA+ER-02MB
1E0000H
(
2FFFFFH
2
Functional description
The following check are performed for the optional RAM. Do not
change.
The following check are performed for the optional RAM. Do not
change.
Check
Address
ϑΟΒ300 ϑΟΒ301 ϑΟΒ302 ϑΟΒ303 ϑΟΒ304 ϑΟΒ305 ϑΟΒ306
1E0000H
♠
♠
♠
♠
♠
♠
♠
1E0001H
♠
♠
♠
♠
♠
♠
♠
1E0002H
♠
♠
♠
♠
♠
♠
♠
1E0004H
♠
♠
♠
♠
♠
♠
♠
1E0008H
♠
♠
♠
♠
♠
♠
♠
1E0010H
♠
♠
♠
♠
♠
♠
♠
1E0020H
♠
♠
♠
♠
♠
♠
♠
1E0040H
♠
♠
♠
♠
♠
♠
♠
1E0080H
♠
♠
♠
♠
♠
♠
♠
1E0100H
♠
♠
♠
♠
♠
♠
♠
1E0200H
♠
♠
♠
♠
♠
♠
♠
1E0400H
♠
♠
♠
♠
♠
♠
♠
1E0800H
♠
♠
♠
♠
♠
♠
♠
1E1000H
♠
♠
♠
♠
♠
♠
♠
1E2000H
♠
♠
♠
♠
♠
♠
♠
1E4000H
♠
♠
♠
♠
♠
♠
♠
1E8000H
—
♠
♠
♠
♠
♠
♠
1F0000H
—
♠
♠
♠
♠
♠
♠
200000H
—
—
♠
♠
♠
♠
♠
210000H
—
—
♠
♠
♠
♠
♠
220000H
—
—
—
♠
♠
♠
♠
240000H
—
—
—
—
♠
♠
♠
260000H
—
—
—
—
—
♠
♠
280000H
—
—
—
—
—
—
♠
"
♠
" in the table shows that the check point address is valid, and
"—" shows that it is invalid.
3
Check the following items.
Check the termination print.
Check the termination print.
4
Test termination
The test terminates after printing the termination printout.
The test terminates after printing the termination printout.
Termination printout
Normal termination
30X
Abnormal termination
EY– – – –
30X
❈❈❈❈❈❈
30X: JOB# (300~306
Y:
Y:
Error code
Note: When an error occurs error print is performed and the error
address is displayed in position
❈❈❈❈❈❈
in hexadecimal.
6
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