Sharp ER-A770 (serv.man8) Service Manual ▷ View online
8) CH7 Check
Check content
The check procedure, the display, and the terminating procedure
are the same as CH1 Check.
are the same as CH1 Check.
9) CH8 Check
Check content
When the channel is set, the following check is performed.
Control signal check
Ern
RSn
DRn
Cin
CDn
CSn
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
The read check of the above inputs.
In the read check, ER and RS are changed over in the above
sequence and the logic states of DR, CI, CD, and CS are
checked.
sequence and the logic states of DR, CI, CD, and CS are
checked.
If the logic differs from that in the table, an error display is made.
"ON" in the table means Active LOW, and "OFF" means Active
HIGH.
HIGH.
The above check is repeated four cycles.
Data transfer check
The loop back data (256 bytes) of 00H ~ 0FFH are used for data
transfer check. The baud rate is set to 115200BPS.
transfer check. The baud rate is set to 115200BPS.
Display
All the contents of an error must be displayed.
ERROR
No.
ERROR display
ERROR content
1
ER-DR:ERROR
ER-DR LOOP ERROR
2
ER-CI:ERROR
ER-CI LOOP ERROR
3
RS-CD:ERROR
RS-CD LOOP ERROR
4
RS-CS:ERROR
RS-CS LOOP ERROR
5
6
7
8
TXEMP:ERROR
TXEMP is not set.
9
TXEMP INT:ERROR TXEMP interruption is not made.
10
TXRDY:ERROR
TXRDY interruption is not made.
11
TXRDY INT:ERROR TXRDY interruption is not made.
12
RCVRDY:ERROR
RCVRDY is not set.
(Reception enabled. TR-Q is
generated during check)
(Reception enabled. TR-Q is
generated during check)
13
RCVRDY INT:ERROR RCVRDY interruption is not made.
14
SD-RD:ERROR
SD-RD LOOP ERROR (DATA
ERROR)
ERROR)
15
SD-RD:ERROR
SD-RD LOOP ERROR
(DATA ERROR, FRAMING
ERROR, etc.)
(DATA ERROR, FRAMING
ERROR, etc.)
16
17
Terminating procedure
Press the CANCEL key to terminate the check.
3-6. Liquid Crystal Display Diagnostics
The ER-A770 LCD display is checked.
The test program displays the patterns in the following sequence.
Every time when the ENTER key is pressed, the next pattern is
displayed. When the ENTER key is pressed at the final pattern, or
when the CANCEL key is pressed at the midst of the check, the
display returns to the menu screen.
Every time when the ENTER key is pressed, the next pattern is
displayed. When the ENTER key is pressed at the final pattern, or
when the CANCEL key is pressed at the midst of the check, the
display returns to the menu screen.
1) Liquid Crystal Display Check
Check content
The test patterns are displayed in the following sequence. When
the ENTER key is pressed, the next pattern is displayed.
the ENTER key is pressed, the next pattern is displayed.
Black and white pattern at 1 dot pitch
Reversed pattern of the above
Vertical stripe pattern at 1 dot pitch
Reversed pattern of the above
Horizontal stripe pattern at 1 dot pitch
RS232 CH1 Check
ER-DR : ERROR!!
Reversed pattern of the above
The outermost peripheral of the LCD’s active area is displayed
in one-dot line.
in one-dot line.
"H" pattern. "H" is displayed in 40 digits and 15 lines. The 15th
line only has 39 digits of "H."
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.
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.
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.
the ENTER key is pressed, the next pattern is displayed.
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.
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.
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:
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.
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.
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)
(DMAC TC UP interruption)
b3
An interruption of carrier OFF cannot be made. The
mirror image of carrier OFF shows carrier ON.
mirror image of carrier OFF shows carrier ON.
b2
An interruption of CTC CH2 or CH3 cannot be made.
(Timer interruption)
(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.
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.
b0
An interruption of send complete cannot be made.
(DMAC TC UP interruption)
(DMAC TC UP interruption)
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)
Data Send Check
Data Check (Satellite Machine)
Data Check (Master Machine)
Self Check
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.
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."
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.
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.
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.
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.
(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.
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.
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.
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.
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)."
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.
checked and press the ENTER key. The display is as shown
below.
SRN Self Check
DATA RETRY CNT.=xxx
ACK 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 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.
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.
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.
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.
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
Data Sequence Number : 0000
The entered
terminal No.
is displayed.
terminal No.
is displayed.
Master machine setting
In the menu screen, select "Data Transmission Check (Master
Machine)." The display is as shown below.
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.
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.
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).
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.
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.
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.
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.
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.
Received data remained.
04
Remote station not ready (in sending)
"NTDY" is sent back because the remote station is not
ready for reception.
"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.
The controller reception buffer of the remote machine is full.
06
Resend error (in sending)
Retry over (5 times) when no response
Retry over (5 times) when no response
07
Collision error (in sending)
When an collision occurred in data transmission
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.
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.
The reception buffer size is insufficient.
0A
Hardware error
Interface abnormality (No SRN interface or abnormality in
SRN controller)
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.
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.
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:
Input Satellite Terminal Number:
The entered
terminal No.
is displayed.
terminal No.
is displayed.
Data Transmission Check (Master)
Input Master Terminal Number :xxx
Input Satellite Terminal Number:xxx
Input Satellite Terminal Number:xxx
The entered
terminal No.
of satellite
machine is
displayed.
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
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
AA
: Sequence No. (2byte: 4digits of binary decimal numbers)
: Transmission data (AAH) x 254 bytes
: 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
Input Satellite Terminal Number : xxx
xxx xxx xxx xxx xxx
Data Sequence Number : xxxx
IRC Error : xx
IRC Error : xx
The
error
code is
displayed
error
code is
displayed
EFT Diagnostics
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