Sharp UP-600, Service Manual

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2)-6. SSP Check
Checking
When started, this check program automatically sets the test SSP,
performs the SSP check and displays the results.
The SSP check sets check data in the empty space in the SSP
entry register. After checking is completed, only the check data is
erased. Any setting remains intact before and after this check
program is executed.
Display
How to exit the program
You can exit the program by pressing the CANCEL key after the
results are checking is displayed.
3) TIMER & KEYBOARD & CLERK SWITCH
DIAGNOSTICS
This program checks the operation of the CKDC’s clock crystal, key-
board and tests the clerk switch and mode switch.
You can return to the Diag menu screen by pressing the CANCEL
key.
3)-1. Timer Check
Checking
Check the operation of the CKDC9’s clock crystal.
The area showing "YY/MM/DD & MM:HH" is continuously dis-
played. Check whether the display blinks in black and white every
0.5 seconds and the time shown is updated.
3)-2. Keyboard Check
Checking
The program checks the input through the keyboard of the UP-
600.
A 3-digit position code corresponding to a key pressed appears on
the screen, along with a catch sound.
3)-3. Clerk SW Check (Not for U version)
Checking
The code of the key inserted into the clerk key switch appears in a
decimal number.
3)-4. Mode Switch Check
Checking
The mode switch position code is displayed in a hexadecimal
number.
SRV:0, PGM2:1, PGM1:2, OFF:E, OP X/Z:3, REG:4, MGR:5,
X1/Z1:6, X2/Z2:7
Intermediate code:E, Multiple error F
4) RS232 I/F DIAGNOSTICS
The program tests the RS232 interface for the main PWB and the
optional board ER-A5RS. Attach a 9-pin D-sub loop back connector
(UKOG-6717RCZZ) wired as shown in Fig. 3-11, to the port you are
going to test.
Fig. 3-11. Wiring diagram of loop back connector (UKOG-6717RCZZ)
The following menu appears on the screen. The cursor shown in
reverse video can be moved using the up/down arrow keys. Move the
cursor to the menu item you want to execute and select by pressing
the Enter key to the corresponding Diag. Program. Press the CAN-
CEL key to return the screen to this submenu.
When setting the channel for the RS232 interface, do not set more
than two ports to the same channel. The UP-600 accommodates up
to one ER-A5RS board, but use caution not to allow each port to
have the same channel; otherwise the hardware might be destroyed.
When Diag. is started, the channel check is performed and only the
channels already set appear on screen.
Note: The channel numbers displayed are logical numbers on soft-
ware, In practical terms, CH1 means the CH1 of the rear con-
nector of the POS and CH8 means the CH2 of the rear con-
nector of the POS. If options are installed, only the ones (CH2
- CH7) which have been set will be added and displayed.
4)-1. CHANNEL Check
Checking
The screen shows only the channels for which have been set and
are connected to the ECR. Compare the channels shown on the
screen and the settings of the channel setting DIP SW of the
RS232 interface board.
The RS232 on the main PWB of the UP-600 is fixed to CH1 and
CH8. It is therefore necessary for the ER-A5RS to set the channel
to CH2 - CH7.
(Ref) ER-A5RS channel settings ("1" = SW OFF, "0" = SW ON)
PASS!!(or ERROR!!)
SSP Check
1pin CD
2pin RD
3pin SD
4pin ER
5pin GND
6pin DR
7pin RS
8pin CS
9pin CI
CH8 Check
CH1 Check
RS232 I/F DIAG