Sharp UP-600 Service Manual page 23

4)-3. CH2 Check
Checking
The procedure for checking, display and the method of exiting the
programs are the same as for the CH1 check.
4)-4. CH3 Check
Checking
The procedure for checking, display and the method of exiting the
program are the same as for the CH1 check.
4)-5. CH4 Check
Checking
The procedure for checking, display and the method of exiting the
program are the same as for the CH1 check.
4)-6. CH5 Check
Checking
The procedure for checking, display and the mothod of exiting the
programs are the same as for the CH1 check.
4)-7. CH6 Check
Checking
The procedure for checking, display and the method of exiting the
programs are the same as for the CH1 check.
4)-8. CH7 Check
Checking
The procedure for checking, display and the method of exiting the
programs are the same as for the CH1 check.
4)-9. CH8 Check
For checking CH8, the following loop-back connector is used.
RS 1pin
ER 2pin
SD 3pin
CI/CD 4pin
GND 5pin
RD 6pin
DR 7pin
CS 8pin
Checking
The following checks are performed.
i. Control signal check
ER8 RS8 DR8
OFF OFF OFF
OFF ON OFF
ON OFF ON
ON ON ON
The program performs the read checks of the above inputs.
During the read check, ER and RS are changed over in the above
order, checking the logic of DR, CI, CD and CS.
If the logic is different from those listed in the table, the error
message appears.
Ci8 CD8 CS8
OFF OFF OFF
ON
OFF
ON
PATTERN 1
ER8 RS8
OFF ON
ON OFF
ON ON
"No Connect" is displayed on the next line of PASS!!.
PATTERN 2
ER8 RS8
OFF ON
ON OFF
ON ON
"CI Connect is displayed on the next line of PASS!!
PATTERN 3
ER8 RS8
OFF ON
ON OFF
ON ON
"CD Connect! is displayed on the next line of PASS!!
If the logic is different from those in PATTERN 1 - 3, the error
message appears.
"ON" means active low and "OFF" active high.
The above checks are repeated for four cycles.
ii. Data transfer check
As check data, loop back data transfer of 256 bytes of 00H - 0FFH
is performed, the baud rate is set for115200 bps.
Display
RS232 CH8 Check
PASS!!(or ERROR!!)
CD Connect(or CI
Details of the errors are printed on the journal.
ERROR
ERROR print
No.
1 ER-DR : ERROR
2 ER-CI : ERROR
3 RS-CD : ERROR
4 RS-CS : ERROR
5
6
7
8 TXEMP : ERROR
9 TXEMP INT : ERROR
10 TXRDY : ERROR
11 TXRDY INT : ERROR
CI8 CD8
OFF OFF
OFF OFF
OFF OFF
CI8 CD8
OFF OFF
ON OFF
ON OFF
CI8 CD8
OFF OFF
OFF ON
OFF ON
Connect, No Connect )
Details of ERROR
ER-DR LOOP ERROR
ER-CI LOOP ERROR
RS-CD LOOP ERROR
RS-CS LOOP ERROR
TXEMP is not set.
TXEMP interrupt does not
occur.
TXRDY is not set.
TXRDY interrupt does not
occur.