Bosch Automation CPS21_3, Manual

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Maintenance and Replacements 8–3
1070 073 825-103 (02.04) GB
5. The PC is fastened to the upper edge of the plastic frame with 2 screws,
and secured with a safety chain against falling off the frame.
Unscrew the two fastening screws and pull the PC down as far as the sa-
fety chain permits.
6. The hard disk can now be seen on the side of the PC that is facing the
display. Unplug the ribbon cable for data/power connection from the
hard disk. At both sides, the ribbon cable is secured by a dab of bonding
adhesive, which must be cut open prior to de-installation. Only in case of
a damaged cable must it be unplugged from the motherboard as well
(see illustration on page 8–4).
7. Next to the hard disk, there is a fastening screw that fixes the hard disk
holding fixture. Unscrew it and move the carrying structure at its bottom
part (close to the fastening screw) a little bit downwards. By this move-
ment, the holding fixture is released from the clamping joint on the other
side of the PC housing. Now you can take off the holding fixture from the
side (see illustration on page 8–4).
8. Unscrew the hard disk from its suspension and replace it with the new
hard disk. Fasten the new hard disk.
9. Reassemble the components in the reverse sequence to that described
above.
.
Once the plug connector has been reinstalled, the ribbon cable must
again be secured with a dab of “hot glue” at both sides.
.
When remounting the hard disk, make sure that cables, especially
those between display and PC housing, are not flattened or squeezed.
Testing the new component:
10.If the new hard disk is of the same type as the old one, recognizing the
disk by BIOS is not necessary. Proceed to 12.
11. When booting the system, press the <Del> key to access the BIOS menu
of the PC. Select the ”Primary Master” menu command in order to ena-
ble the system to detect and identify the hard disk parameters. In the
”Transfer Mode” submenu item set ”Fast PIO 3” for the hard disk. To exit
BIOS, press F10 (”Save Settings and Exit”; saves the hard disk para-
meters).
To do so, press the <Z> key if you have a keyboard with a German layout
(Z = Y for Yes).
12.If the operating system fails to start up, interrupt the power supply again
for min.10 seconds, and then restart the operating system.
13.If the system still fails to boot, check the connections for the following:
D
Positive connection of hard disk controller cable
D
Proper seating of all cables and connectors.
D
Functioning power supply
14.Once the PC has started properly completed its boot process, the user
data and operating system configuration must again be restored for nor-
mal operation.