Read Sharp XE-A207 (serv.man3) Service Manual online
XE-A207/A217/A307
DIAGNOSTIC PROGRAM DESCRIPTION
– 36 –
10-2. 5V SUPPLY
(1) Test Items
<Check of Control Signals>
It performs the Read and Check of the above input.
<Check of Data Transfer>
The transfer of 256 bytes loop back data of 00H to 0FFH is conducted.
A found error is displayed.
Press the [TL/NS] key to end the test.
When LED turns on, the test operator should press either key according
to the test result of ON or OFF.
to the test result of ON or OFF.
By pressing the [TL/NS] key, this test ends with OK.
Caution:
• To have printout of test results, as XE-A307 has 2 sheets for the
printer, be sure to use both printers to print it out.
• When conducting the PWB inspection for XE-A307V, swith SP3 of the
PWB to 5V power supply.
11. PRINTER
The unit displays and prints out as shown below.
By pressing the [TL/NS] key, this test ends with OK.
By pressing any key other than the [TL/NS] key, the test ends with NG.
By pressing any key other than the [TL/NS] key, the test ends with NG.
Caution: To have printout of test results, as XE-A307 has 2 sheets for
the printer, be sure to use both printers to print it out.
12. ROM
Check whether the checksum of 000000h to 1FFFFFh is correct.
By pressing the [TL/NS] key, this ends.
Caution: To have printout of test results, as XE-A307 has 2 sheets for
the printer, be sure to use both printers to print it out.
Output
Input
DTRn
RTSn
DSRn
DCDn
CTSn
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
No.
Display
1
DTR-DSR
2
RTS-DCD
3
RTS-CTS
4
DCD INT
5
CTS INT
6
TXEMP
7
TXEMP INT
8
TXRDY
9
TXRDY INT
10
RCVRDY
11
RCVRDY INT
12
SD-RD(DATA)
13
SD-RD(FRAME)
LCD display (when the test result is NG.)
RS232 CH1
SIGNAL CHECK:NG
DTR-DSR,RTS-DCD
RTS-CTS
SIGNAL CHECK:NG
DTR-DSR,RTS-DCD
RTS-CTS
LCD display (when the test result is OK.)
RS232 CH1
SIGNAL CHECK:OK
LED ON?
TL:ON, OTHER:OFF
SIGNAL CHECK:OK
LED ON?
TL:ON, OTHER:OFF
Printout (when SIGNAL CHECK is NG.)
RS232C
ޓCH1 NG---ERROR NO.
Printout (when SIGNAL CHECK is OK, LED is OFF.)
RS232C
ޓCH1 NG
Printout (when SIGNAL CHECK is OK, LED is ON.)
RS232C
ޓCH1 OK
LCD screen
PRINTER
TL:OK,OTHER:NG
Printout
/////////// ------- //////////
/////////// ------- //////////
/////////// ------- //////////
/////////// ------- //////////
Print 30 columns and 6 lines of "/."
LCD display (when the test result is NG.)
ROM
Version xxxx
Checksum xxxx NG
TL KEY:EXIT
Printout (when the test result is NG.)
ROM Version & CHECKSUM
Version xxxx
Checksum xxxx NG
Version xxxx
Checksum xxxx NG
ROM
LCD display (when the test result is NG.)
Version xxxx
Checksum xxxx OK
TL KEY:EXIT
Checksum xxxx OK
TL KEY:EXIT
Printout (when the test result is OK.)
ROM Version & CHECKSUM
Version xxxx
Checksum xxxx OK
Version xxxx
Checksum xxxx OK
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