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

Reversed pattern of the above
The outermost peripheral of the LCD’s active area is displayed
in one-dot line.
"H" pattern. "H" is displayed in 40 digits and 15 lines. The 15th
line only has 39 digits of "H."
Terminating procedure
Press the ENTER key at the final pattern, or press the CANCEL
key to terminate the check. 
3-7. Rear & Pole Display Diagnostics
The rear display is checked.
The test program displays the following patterns. When the CANCEL
key is pressed, the display returns to the diagnostics menu. 
1) Rear & Pole Display Check 
Check content
The test patterns are displayed in the following sequence. When
the ENTER key is pressed, the next pattern is displayed.
(i) The test pattern below is displayed. 
(ii) The screen displays a test pattern showing that all digits are lit.
Display
Terminating procedure
Press the CANCEL key to turn off all the elements of the rear
display.
3-8. SHARP Retail Network Diagnostics
The SRN test is performed.
To perform this test, the following composition is required.
ER-A770
Terminal resistor
Branch (trunk) cable (only for data transfer test)
The following menu is displayed. The cursor position is highlighted.
Use   key and   key to move the cursor. Move the cursor to the
process you desire and press the enter key. The selected individual
diagnostics program is executed. When the individual diagnostics
program is completed, the display returns to this menu screen. When
the CANCEL key is pressed, the display returns to the diagnostics
menu. 
1)
SRN Self Check
Check content
The ROM and RAM for SRN are checked, and CTC interruption and
carrier sense are checked. Also ADLC function and transmission/re-
ception DMA check is made by using the self loop function of ADLC
(MC6854). In addition, the other signals are checked. The check
procedure is as follows:
Execute diagnostics command 2. The number of resending is
displayed.
Execute diagnostics command 0. The error status is displayed.
The error status is as shown in the table below. When an error
occurs in this test, the following tests are not performed.
b7
An error occurs. (The error print is always 1.)
b6
An unexpected interruption is made.
b5
A collision is generated.
b4
An interruption of send complete cannot be made.
(DMAC TC UP interruption)
b3
An interruption of carrier OFF cannot be made. The
mirror image of carrier OFF shows carrier ON.
b2
An interruption of CTC CH2 or CH3 cannot be made.
(Timer interruption)
b1
ROM sum check error
b0
RAM error
Execute diagnostics command 1. The error status is displayed.
The error status is as shown in the table below. 
b7
An error is generated. (The error print is always 1.)
b6
An unexpected interruption is generated. 
b5
DMA sent data and received data are different.
b4
The number of data received in DMA is abnormal.
b3
The number of data transmitted in DMA is abnormal.
b2
An overrun error is generated.
b1
An underrun error is generated.
DOT DISPLAY     :
7SEG DISPLAY   :
0 1 2 3 4 5 6 7 8 9 ; A a B b C
0. 1. 2. 3. 4. 5. 6. 7. 8. 9. -.
Rear Display Check
SRN Diagnostics
Flag Send Check
Data Send Check
Data Check (Satellite Machine)
Data Check (Master Machine)
Self Check
b0
An interruption of send complete cannot be made.
(DMAC TC UP interruption)
Execute diagnostics command 5. The error status is displayed.
The names and the directions of the signals which are subject
to diagnostics 5 command are as shown in the table below. 
Signal name
Direction
Power interruption notice
Host 
 Controller
Power interruption ON initialization
Host 
 Controller
Power interruption ON continuation
Host 
 Controller
Power interruption process complete
Host 
 Controller
CH1 reception data present.
Host 
 Controller
CH2 reception data present.
Host 
 Controller
Check that the target bit of two statuses obtained by diagnostics
5 command is "0" for ST1 and "1" for ST2. (The other bits must
be masked.) In the other cases, the error status is displayed with
the error occurrence bit as "1." The normal bit shows "0."
The error status from the host to the controller is as shown in the
table below.
b7
Not used. ("0" is always displayed.)
b6
Power interruption notice
b5
Not used. ("0" is always displayed.)
b4
Not used. ("0" is always displayed.)
b3
Not used. ("0" is always displayed.)
b2
Not used. ("0" is always displayed.)
b1
Power ON continuation 
b0
Power ON initializing
The error status from the controller to the host is as shown in the
table below. 
b7
Not used. ("0" is always displayed.)
b6
Power interruption notice
b5
Not used. ("0" is always displayed.)
b4
CH2 reception data exits.
b3
CH1 reception data exits.
b2
Power interruption process complete
b1
Not used. ("0" is always displayed.)
b0
Not used. ("0" is always displayed.)
Display
Terminating procedure
Press the CANCEL key to terminate the check. After terminating,
perform the service reset.
2) SRN Flag Send Check
Check content
Execute diagnostics 3 command to send Flag (7EH) continuously.
Display
Terminating procedure
Perform the service reset.
3) SRN Data Send Check
Check content
Execute diagnostics 4 command to send data of 00H ~ FFH
(256Byte) as one packet at 12.8msec packet interval at 1Mbps
continuously.
Display
Terminating procedure
Perform the service reset.
4) Data Transmission Check 
Data transmission is checked in an actually composed system. The
system is composed of one master machine and max. 15 satellite
machines. 
Note for starting the check
When checking the set in which the SRN setting has been
made, cancel the SRN setting before starting this check. 
When checking the actually composed system, disconnect the
SRM cables of the sets which are not checked, or cancel the
SRN setting. If it is set to "SRN exits," data may be destroyed. 
The transmission check setting must be performed after can-
celing the SRN setting of all the sets in the system. First, set
the satellite machines, then set the master machine.
Setting procedure
Satellite machine setting
In the menu screen, select "Data Transmission Check (Satel-
lite)."
The display is as follows:
Enter the terminal No. (000 ~ 254, 3 digits) of the machine to be
checked and press the ENTER key. The display is as shown
below.
SRN Self Check
DATA RETRY CNT.=xxx
ACK  RETRY CNT.=xxx
DIAG 0      
 
:xxxxxxxx
DIAG 1      :xxxxxxxx
DIAG 5 H
C  :xxxxxxxx
DIAG 5 H
C  :xxxxxxxx
The number of resending is displayed
in xxx with a decimal number.
In the sequence of b7, b6, ..., b0 from
the left. "1" is displayed in case of an
error, and "0" when normal.
In the sequence of b7, b6, ..., b0 from
the left. "1" is displayed in case of an
error, and "0" when normal.
In the sequence of b7, b6, ..., b0 from
the left. "1" is displayed in case of an
error, and "0" when normal.
In the sequence of b7, b6, ..., b0 from
the left. "1" is displayed in case of an
error, and "0" when normal.
SRN Flag Send Check
SRN Data Send Check
Data Transmission Check (Satellite)
   Input Terminal Number  :
Data Transmission Check (Satellite)
   Input Terminal Number : xxx
   Data Sequence Number  : 0000
The entered
terminal No.
is displayed.
Master machine setting
In the menu screen, select "Data Transmission Check (Master
Machine)." The display is as shown below.
Enter the terminal No. (000 ~ 254, 3 digits) of the machine to be
checked and press the ENTER key. The display is as shown
below.
Enter the terminal No. (000 ~ 254, 3 digits) of the machine to be
connected to the machine to be checked and press the ENTER
key. The display is as shown below.
When checking with two or more satellite machines connected,
enter the terminal No. (000 ~ 254, 3 digits) and press the EN-
TER key similarly. To execute, press the ENTER key without
entering the terminal No. The display is as shown below. Do not
use the same terminal No. for different machines (master/satel-
lite).
With the above setting, data transmission between the master
machine and the satellite machine is started.
Check content
Data in the following format composed of 2byte sequence No.
and 254byte AAH data are transmitted from the master ma-
chine to the satellite machine. The master machine displays the
sequence No.
The satellite machine sends back the received data to the mas-
ter machine. The satellite machine displays the received se-
quence No.
The master machine receives the data, and checks the se-
quence No. and 256byte AAH data. In case of an error, the
master machine displays an error code and terminates the
check. If two or more satellite machines are used, the above
operation is repeated. If data transmission with all the satellite
machines are normally completed, the master machine incre
ments the sequence No. 
The above operation is repeated. 
Error display
The error codes are as shown below. 
01
Command abnormality (except for during transmission)
02
No data received.
03
Received data present.
Received data remained.
04
Remote station not ready (in sending)
"NTDY" is sent back because the remote station is not
ready for reception.
05
Reception buffer full (in sending)
The controller reception buffer of the remote machine is full.
06
Resend error (in sending)
Retry over (5 times) when no response
07
Collision error (in sending)
When an collision occurred in data transmission
08
Line busy time out
Transmission cannot be made by multi-station
communication to cause time out in data send wait time.
09
Reception size over (in receiving)
The reception buffer size is insufficient.
0A
Hardware error
Interface abnormality (No SRN interface or abnormality in
SRN controller)
Terminating procedure
Press the CANCEL key to terminate the check. After terminating,
perform the service reset. 
3-9. EFT Diagnostics
Perform EFT (ER-02EF) CHECK.
Select EFT Diag from the MENU and turn the Power OFF.
Press the CANCEL key to return to the Diag menu screen.
1) EFT Check
Set all DIPSW1 switches on the ER-02EF to OFF,turn the power of
the system ON.  EFT CHECK will be automatically performed.
Details of the test
(1) For EFT CONNECTER,the LOOPBACK TEST is carried out
on ER-DR,ER-CI,RS-CS.
Data Transmission Check (Master)
   Input Master Terminal Number :
Data Transmission Check (Master)
   Input Master Terminal Number   :xxx
   Input Satellite Terminal Number:
The entered
terminal No.
is displayed.
Data Transmission Check (Master)
   Input Master Terminal Number   :xxx
   Input Satellite Terminal Number:xxx
The entered
terminal No.
of satellite
machine is
displayed.
Data Transmission Check (Master)
   
   Input Master Terminal Number    : xxx
   Input Satellite Terminal Number : xxx
   xxx xxx xxx xxx xxx
   Data Sequence Number            : 0000
XX
XX
AA
AA
AA
AA
AA
AA
256
255
254
5
4
3
2
1
Byte
XXXX
AA
: Sequence No. (2byte: 4digits of binary decimal numbers)
: Transmission data (AAH) x 254 bytes
Data Transmission Check (Master)
   Input Master Terminal Number    : xxx
   Input Satellite Terminal Number : xxx
   xxx xxx xxx xxx xxx
   Data Sequence Number            : xxxx
   IRC Error                       : xx
The
error
code is
displayed
EFT Diagnostics
(2) Check DIPSW1 by turning SWITCHES 1-8 ON one by one.
(3) When all switches are normal, SUM CHECK is carried out on
EFT ROM,while WRITE/READ CHECK is carried out on RAM.
Display (Normal end)
Display (Error end)
Exit the Diag program.
Press the CANCEL key to exit the program.
3-10. Magnetic Card Reader Diagnostics
Read check of the optional UP-E12MR is performed. 
The test program reads the magnetic card of ISO 7811/1-5 standard
and displays the data. When the CANCEL key is pressed, the display
returns to the diagnostics menu. 
1) Magnetic Card Reader Check 
Check content
The test program reads tracks 1 and 2 of the magnetic card of
ISO 7811/1-5, and displays the data in ASCII code.
Display
XXXXX shows the data read by the MCR. Incase of an error, the
error code is displayed as shown below. 
Terminating procedure
Press the CANCEL key to terminate the check.
3-11. Drawer Diagnostics
This diagnostics is used to check the drawer open and sensors. 
The following menu is displayed. The cursor position is highlighted.
Use   key and   key to move the cursor. Move the cursor to the
process you desire and press the enter key. The selected individual
diagnostics program is executed. When the CANCEL key is pressed,
the display returns to the diagnostics menu.
1) Drawer 1 Check
Check content
The solenoid of drawer 1 is turned on, and the drawer open
sensor value is sensed at every 100ms, and the state is displayed.
Display
Terminating procedure
Press the CANCEL key to terminate the check. 
2) Drawer 2 Check
Check content
The solenoid of drawer 2 is turned on, and the drawer open
sensor value is sensed at every 100ms, and the state is displayed.
The display and the terminating procedure are the same as
Drawer 1 Check.
DIAGO(SELF TEST)     :OK
VHI27040R**1*        :OK
256K SRAM            :OK
In Loop Back Error
  ER-DR LOOP ERROR
  ER-CI LOOP ERROR
  RS-CS LOOP ERROR
In Self Test Error
  DIP SW ERROR
In Self Test Error
  VHI27040R**1*      :ERROR
  256K SRAM          :ERROR
     MCR (Magnetic Card Reader) Check
        TRACK1:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
        TRACK2:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Magnetic Card Reader Check
   TRACK1:BUFFER EMPTY
   TRACK1:MCR ERROR
   TRACK2:BUFFER EMPTY
   TRACK2:MCR ERROR 
Displayed when TRACK1 empty
code is sent back.
Displayed when TRACK1 empty
code is sent back.
Displayed when TRACK2 empty
code is sent back.
Displayed when TRACK2 empty
code is sent back.
Drawer Diagnostics
Drawer 2 Check
Drawer 1 Check
Drawer 1 Check
   Drawer Open Sensor  :  OPEN (or CLOSE)
Page of 94
Display

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