Service manual

Hardware check
The test continues by running a comparison check
between the test data file and that which is fitted to the
computer. The screen will clear and the following will be
displayed:
COMPUTER TYPE TEST VX.XX DEALER
PASSED CPU version matches
PASSED MEMC version matches
PASSED OS version matches
PASSED Memory size matches
PASSED ST506 int. correct setup
PASSED ST506 ext. correct setup
PASSED IDE int. correct setup
PASSED Hard disc is correct size
PASSED FDC correct setup
PASSED Serial correct setup
PASSED Ethernet I correct setup
PASSED Ethernet II correct setup
PASSED SCSI Podule correct setup
PASSED ROM Podule correct setup
PRESS <SPACE BAR> TO CONTINUE
If the test fails, make a note of the fault and press the
space bar.
The following will be displayed:
COMPUTER TYPE TEST VX.XX DEALER
PASSED UPM correct setup
PASSED I/O correct setup
PASSED I/O MIDI correct setup
PASSED MIDI correct setup
PRESS <SPACE BAR> TO CONTINUE
Action If hardware check falls
Check that the system matches the data file that you
selected. A guide to the test data file can be to read the
system variables that start:
Test_xxxx :y.
Test_Serial_port : 1 serial port
fitted.
If a module is fitted, the related test system variable
should exist, the hardware check verifies this. If it is a
version number check, then the hardware check
compares the version number with the version fitted. The
value attached to the string is only used in this test when
checking version numbers or memory size. If the value is
non-zero, it means the test is to be executed.
Test_MEMC_Version : 101 MEMC version
la fitted
If the data file is correct, refer to the section entitled
Action if main PCB fails on page 1-3.
External port tests
You should be familiar with the correct print-out pattern
before running this test. It should resemble Figure 1-3:
Printer test output shown overleaf.
While each test is being run the word Running
will appear next to the test and then, when the test
is complete, the pass/fail message will overwrite it.
The Printer test sends a test pattern to the printer. The
pattern comprises a repeated series of stepped lines,
each representing bits 0 to 7. You should look for a
missing or corrupted pattern. As this is a subjective test
make a note of any faults that you detect.
The RS423 port test is carried out automatically and
gives a passed/failed message.
The screen will clear and the following will be displayed:
EXTERNAL PORTS TESTS VX.XX DEALER
Passed PRINTER,EPSON FX.
Passed Printer Graphic Test.
Passed Printer Text Test.
Passed SERIAL, 82C710 CHIP TEST.
Passed Control Line Test.
Passed Data Line Test.
Passed Communications State Test.
Passed Baud Rate Test. NOT DOING
ECONET PORT TEST
THIS SUB-TEST HAS PASSED
PRESS <SPACE BAR> TO CONTINUE
Check the printout.
Action if printer test fails
• Check that the configuration settings for PRINTER
and IGNORE are correct.
• Check that the type of printer displayed matches the
type used.
• Check that the printer is on line and that the printer
lead is connected correctly and functions correctly.
• If the fault still persists then refer to the section entitled
Action if main PCB fails on page 1-3.
Action if the RS423 tests fail
• Ensure that the configuration items BAUD and DATA
are set to sensible values (see the RISC OS User
Guide).
• If the test still fails, check that the correct loopback
plug is fitted and that it functions correctly (this can
be done by trying it on another unit).
• If the unit still fails, then refer to the section entitled
Action if main PCB fails on page 1-3.
Note: During the soak tests neither the printer nor the
RS423 tests are executed (see the section entitled
Performing soak tests on page 1-17).
1-10 Issue 1, November 1991 Part 1- Fault diagnosis and repair