Ssp Check; Timer & Keyboard & Clerk Switch Diagnostics; Timer Check; Keyboard Check - Sharp ER-A770 Manual

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3) SSP Check

Check content
By starting this check program, the SSP setting for checking is
automatically performed and the SSP check is executed and the
result is displayed.
The SSP check sets data for check in the vacant space in the
SSP entry register, and deletes the data for check after comple-
tion of checking. Therefore, the already set data are not changed
by this check.
Display
SSP Check
SSP (NMI) Check
Terminating procedure
After displaying the check result, press the CANCEL key to termi-
nate the check.
3-4. Timer & Keyboard & Clerk Switch Diagnostics
The operation of the clock crystal of CKDC, the keyboard, and the
clerk switch are tested.
When the CANCEL key is pressed, the display returns to the diagnos
tics menu.
Timer & Keyboard & Clerk SW Diagnostics
DATA & TIME = YY/MM/DD & HH:MM:SS
KEY CODE = ***
CLERK CODE = ***

1) Timer Check

Check content
The operation of the clock crystal of CKDC9 is checked.
The screen displays "YY/MM/DD & MM:HH:SS". Make sure that
the time displayed is updated.

2) Keyboard Check

Check content
The A770 main body keyboard input test is performed. The posi-
tion code corresponding to the inputted key is displayed in three
digits. The key layout corresponding to the input is displayed on
the LCD screen. Press the corresponding key to input. The display
of the inputted key is changed from white square
square
and a catch sound is generated.

3) Clerk SW Check

Check content
The code of the key which is inserted into the clerk key switch is
displayed in a decimal number.
: PASS!!(ERROR!!)
to black

3-5. RS232 I/F Diagnostics

The main PWB and the option PWB (RS232 interface of ER-A7RS)
are checked. Attach the 9-pin D-Sub loop back connector (UKOG-
6717RCZZ) of wiring in Fig. 3-11.
CD
1pin
RD
2pin
SD
3pin
ER
4pin
GND
5pin
DR
6pin
RS
7pin
CS
8pin
CI
9pin
Fig. 3-11. Wiring diagram of loop back connector (UKOG-6717RCZZ)
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.
When setting channels of RS232, do not set two or more ports to
one channel. In the ER-A770, max. two units of ER-A7RS can be
installed. In each PWB, do not set two or more ports to the same
channel. If two or more ports should be set to one channel, the
hardware would be destroyed.
RS232 I/F Diagnostics

CHANNEL Check

CH1 Check
CH2 Check
CH3 Check
CH4 Check
CH5 Check
CH6 Check
CH7 Check
CH8 Check
1) CHANNEL Check
Check content
The CHANNEL setting of the connected RS232 is displayed. The
display content and the setting of DIP SW for CHANNEL setting
on the RS232 I/F PWB are compared.
Since the RS232 on the main PWB of the ER-A770 is fixed to
CH1 and CH8, that in the ER-A7RS must be set to CH2 ~ CH7.
Relationship between the physical channel and logical
channel of the ER-A770's RS232.
The ER-A770 comes equipped with 2 channels of the RS232C inter-
face as standard.
These two channels are expressed as physical channels "CH1" and
"CH2" on the cabinet and application. On hardware, however, the
"CH2" is defined as a logical channel "CH8" because it has a different
circuit configuration.
Therefore, the relationship of channel definitions between the cabinet
indication and the RS232 I/F Diag is as shown in the table below.
Cabinet indication
Logical channel
CH1
CH1
CH2
CH8
Definition in Diag.
Application
CH1
CH1
CH8
CH2

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