Visara SCON-20L Reference Manual - Manual (Page 40)

5-6 707043-005
SCON-20L/22L Hardware Reference Manual
Replacement
1. Align the disk drive into its mounting track.
2. Carefully slide the disk drive into its bracket.
3. Install the screws to attach the drive to the bracket.
4. Connect the drive control and power supply cables and DC fan power cable.
Note: Ensure the drive control cable is properly attached to J12 on the Mother
board.
5. Replace the covers and cables.
6. Attempt to power the unit on. If it boots until the word ‘CONFIGURATION’
appears, then you will need to restore the configuration from a backup if
available. If the unit fails at IML state 450 when booting, then there is no code
to boot from on the hard drive.
7. Run Offline Utility 41 to format the new drive if necessary. Refer to the LINCS
Problem Determination manual for reference..
8. Execute Offline Utility 36 to initialize the drive. Refer to the LINCS Problem
Determination manual for reference.
9. Run the microcode merge utility as described in Chapter 4 of this manual.
10. IML the SCON-20L/22L. You will need to restore the configuration for this
unit from backup.
Mother Board Assembly
The Mother Board contains nonvolatile memory which is used to hold information
regarding the serial number and any feature bits installed from FADs. Care should
be taken to record the serial number associated with the unit, and to remove the
feature bits prior to replacement of the Mother Board if possible. The feature bits
can be removed by using the online utility 1/9 if you have access to the original
FAD disks or using utility 0/5 using a blank diskette, if the current Mother Board is
functional. Once the new board is installed, you will need to restore the serial
number and feature bit information. If the old Mother Board was not functional,
you will have to use the orginal FADs to restore the feature bits. Reference the
LINCS Central Control Mode manual for information regarding online utilities.
Removal
1. Ensure power is off. Remove the cables and covers.
2. Remove all Circuit boards attached to the board guide from the unit, taking
note of position of each card.
3. Disconnect all cables attached to the Mother board, taking notes as necessary.
4. Remove the nine screws attaching the base to the chassis. There are three
screws on each side and three on the back.