Service manual

Restoring the CMOS RAM settings
When you have finished testing, you need to restore the
customer's original CMOS RAM settings:
1 Press the Shift and Break keys simultaneously. This
produces the top level menu:
MENU VX.XX UN-DEF
(A) Test Suite
(B) Individual Tests
(C) Load / Save CMOS
(D) Quit
Select the test type of your choice
2 Select option (C) Load / Save CMOS. This
produces the following menu:
LOAD / SAVE CMOS RAM VX.XX UN-DEF
1. Save CMOS RAM to disc.
2. Load CMOS RAM from disc.
3. Exit Program.
Please select the required option ?
3 Select option 2, and replace the test disc in the
floppy drive with the data disc which holds the stored
CMOS RAM settings.
4 When prompted, enter the filename (including the full
directory path if necessary) that contains the
customer's CMOS RAM configuration settings. Press
Return.
5 Remove the data disc when prompted.
6 Press the space bar to continue.
7 Type 3 to exit the program.
Replacing the customer's hard disc
If you created and fitted a test IDE hard disc, you need
to replace it with the customer's original hard disc. To do
this follow the instructions given below:
1 Replace the test hard disc with the original hard disc,
using the procedure given in Part 2 - Disassembly and
assembly.
2 Check the refitted hard disc starts up properly – power
up the equipment, click the mouse over the hard disc
icon and ensure a directory viewer appears.
Switching off the equipment
If you have completed service or tests on the system
and are about to move the computer and/or return it to
the customer, you must do the following before
switching off:
1 Shutdown the unit under test:
• press F12 and type SHUTDOWN (then press Return)
or
• select Shutdown from the Task Manager menu.
this parks the hard disc heads, if a hard disc drive is
fitted.
2 Switch off the power to the computer (at the mains
switch on the front of the machine).
3 Switch off the power to the rest of the equipment.
Disconnecting the equipment
It is important to disconnect the equipment from the
computer in the correct order:
1 Disconnect the Archimedes computer from the mains
supply.
2 Disconnect all monitors from the mains supply.
3 Disconnect all other equipment from the mains
supply.
4 Disconnect all monitors from the Archimedes
computer.
5 Disconnect the headphones from the headphones
socket.
6 Disconnect the printer from the Parallel Printer port.
7 Disconnect the serial port loopback plug from the
RS423 socket.
8 Disconnect the keyboard from the front panel
connector.
9 Disconnect all other test equipment from the
computer.
Packing
After servicing, repack the computer in its box. To avoid
damage, do not send the computer through the post or
by courier unless it is in its original packaging.
Part 1- Fault diagnosis and repair Issue 1, November 1991 1-19