Contents

1. Check Your Kit Contents

2. Preliminary Information

3. Removal

4. Fitting the Discovery Board

5. Reconnection

Check Your Kit Contents

The kit should contain the list of components as shown below. It may also contain the additional CPU board in place of the termination board if the customer has a Shogun with more than two CPU's. The fitting instructions allow for both situations. Check this before starting any upgrade.

Kit of Parts

Boards

1. Discovery motherboard

2. Termination board

(Option) Additional CPU board

3. (May be required) Rev / D Power distribution board

The main boards may have had the processors and/or memory fitted in the factory, see below.

Cables

1. New, longer SMIC ribbon

2. Motherboard to power board - Power cable

3. Motherboard to power board - data cable

4. Long SCSI signal ribbon (motherboard direct to the removable media drive bay)

Ancillary parts

1. New, short, Busbar set (4 pieces)

2. Additional CPU card support (if required)

3. Extra mounting screws for motherboard (7-off)

Important extras

1. Required processors, Pentium Pro. With heatsinks and retaining springs. Check customer requirements.

These may have been factory fitted to the boards.

2. Voltage Regulator Modules, (VRM) to accompany each processor above.

3. Memory required, DIMMs. Check site requirements.

These may also have been factory fitted, if so, handle motherboard with extreme

caution.

4. New Owner's Handbook Handbook (title;- ‘FT4200 Owner’s Handbook’)

5. Other appropriate documentation, software utilities, disks etc.

6. Separate HDD SCSI cable kit. (Customer dependant)

Preliminary Information

Mandatory tasks

Before you can perform the upgrade procedure, you must do the following:

Refer to the SMA and note down the value of the TimeOnCharge variable. This value expresses the time remaining from the battery pack in the UPS. (Since isolating the battery pack sets the TimeOnCharge variable to zero, you will need to reset the variable in the SMA after you have completed the upgrade and set the switch back to the On position)

Power down the system to Standby mode.

Ensure that the battery pack is isolated (the circuit breaker switch on the rear of the server must be in the Off position).

Unplug the power lead from the supply socket.

Remove both of the side panels. Refer to the existing ‘Shogun Owner’s Handbook’ for detailed instructions.

Antistatic Precautions

All electronic components and equipment are sensitive to static electricity. Even small electrostatic charges can destroy components or severely shorten their working life. You should always take preventive measures which generally involve:

a common earth point

an earth bench or bench mat

an earthed wrist strap

Note

An antistatic earthing stud is provided on the rear panel of the server.

The Appendix in the Owner's Handbook contains greater detail about antistatic precautions.

Equipment Required

You will need the following tools to work on the system unit:

Side panel key

Phillips No.2 (cross-head) screwdriver, (magnetised will help)

Flat blade screwdriver

Box spanner for port fasteners

Socket set with fitting for M5 head (for bus bar connections)

Torque wrench set to 5Nm (for tightening bus bar connections)

Removal

There is normally only the motherboard to be removed, but there are cables and busbars that require changing. Each is dealt with in turn in these pages. Read through all the instructions carefully before starting work.

Motherboard

To be removed

Having followed the preliminary tasks as detailed:

1. Unplug all cables and leads from the back panel connectors (i.e. serial, parallel, video, keyboard, mouse) on the motherboard ports and from any expansion cards.

2. Remove the screws which secure the metal plate over the electronics chamber. The screws are along the top and right edges of the plate as shown in the Owner's Handbook.

3. Rotate the right edge of the plate slightly towards you and unhook the left edge. Removing the plate uncovers the motherboard.

4. Remove the six screws from the periphery of the sub-plate which surrounds the serial, parallel and video connectors on the rear panel of the server.

5. Disconnect the ribbon cable from and remove the System Management Interface Card (SMIC) and put the card in a safe place.

Caution

All boards and assemblies should be placed on an antistatic surface or within an antistatic container as they are removed from the server.

1. Remove all card supports across the motherboard section.

2. Remove the memory boards, CPU boards, plus any other expansion cards.

3. Disconnect all ribbon and power cables from the top of the board.

Remove completely all the short ribbon or power cables between the motherboard and the power distribution board.

 

Caution

It is vital that you remember the exact cable and connector arrangement of the hard disks, particularly when using a RAID configuration, especially if there is an additional SCSI control board fitted in the system. If you fail to restore the arrangement so that all cables and plugs are as they were originally, all the data on the hard disks could be lost

 

4. Unplug the two SCSI interface cables from the connectors at the bottom of the motherboard.

One of these SCSI cables goes via the HDD module 'B' to the 5.25" removable media drive bay. This cable should be released from its restraints, disconnected at all points between the motherboard and the drive end and all sections removed from the casing.

Check the jumper setting on the module topboard. The link must be set to terminate the SCSI bus.

5. Now remove the 14 screws which secure the motherboard to the centre spine of the server, as shown in the Shogun Owner's Handbook.

6. Lift the motherboard clear of the casing.

Power Distribution Board

To be retained, but:

The motherboard power distribution panel is fixed to the inner roof of the electronics chamber and is positioned at right angles to the motherboard. The illustration below shows the connectors and the eight securing screws on the board. This should not normally need to be removed.

1. Disconnect the busbars from the board, then disconnect them from the power supply at the bottom of the chamber. They are no longer needed.

2. Disconnect the SMIC ribbon and remove it from the casing. It is to be replaced by a longer one.

3. Ensure that the power and ribbon cables to the motherboard have been removed. The replacement cables are different.

Check that the board is revision /D or later, particularly if the additional CPU card is to be fitted, The Pentium Pro takes far more power. The Rev /B is easily identified by its having a small power module the size of a matchbox in the centre, while the Rev /D has a very large heatsink covering a large area of the board, as can be seen from the illustration below.

If there is a Rev /B power board then it must be upgraded to Rev /D or later. If the customer has already had a second Twin Peaks board fitted, the power board should already be rev /D, or higher.

Other modifications may need to be made to early versions of this power board if the additional CPU board is to be fitted. If in any doubt, check with Apricot Technical Support Department.

A	Mounting screw holes (x8)
1	Loudspeaker connection
2	Data from motherboard
3	Cooling fan connector
4	Aux. power connector
5	SMC ribbon connector
6	SMIC ribbon connector
7	Power to/from motherboard
8	Power to/from motherboard
9	Power to/from motherboard
10	3.3V supply to motherboard

Motherboard Power Distribution Board (Rev /D)

Fitting the Discovery Board

1 Top right corner of m'board 2 Ports on motherboard 3 Ports sub-plate 4 Port mounting bolts

Rear sub-plate assembly

This plate must be detached from the old motherboard and fixed to the Discovery board before fitting into the server.

The Discovery board now can be fitted into the case and secured with the 21 screws required:

Motherboard securing screws

Due to the high frequencies used in current board and processor design, it is extremely important to use all 21 screws to ensure adequate and even bonding of the motherboard ground to the server metalwork.

Secure the rear sub-plate to its position against the back panel of the server, with the original six screws.

Reconnection

Motherboard details

1	Slot for CPU/termination card	13	Busbar connections to PSU
2	VRM8 socket for processor 'B'	14	EISA expansion sockets
3	DIMMs 1 to 4 (top to bottom)	15	PCI expansion sockets
4	ZIF socket for processor 'B'	16	BIOS recovery links
5	ZIF socket for processor 'A'	17	Replaceable CMOS Lithium battery
6	DIMMs 5 to 8 (top to bottom)	18	Clear CMOS links
7	VRM8 socket for processor 'A'	19	System external connections
8	Aux power socket (from PSU)	20	Data connection to power dis. board
9	UltraSCSI connector to HDD module 'A'	21	Bus and multiplier switches, SW1-1 to 6
10	Aux busbar connect to PSU (not used)	22	FDD mode setting links
11	SCSI connec for Remov. media drives	23	Floppy disk control connector
12	Busbar connections to PSU	24	Power connections to power dis. board

 

Power connections

It is easier to connect the heavier power connections first.

1. The busbars, to the PSU from terminals 12 and 13 above. (note that these connections must be tightened with a torque wrench set to 5 Nm).

2. The auxiliary supply, from the PSU to the board, socket 8 above.

3. The main connection to the power distribution board, 24 above. The other ends connect to 9 and 10 on the power board, detailed earlier.

Data connections

The next step is to connect up the data/ribbon cables.

1. Short 34 way ribbon from connector 20 (top left of the motherboard) to socket 2 on the power distribution board.

2. Connect the floppy drive ribbon to connector 23 on the motherboard.

3. Fit the new SCSI cable to the removable media drive bay, from connector 11 on the motherboard direct to the drive bay. Make sure it is clamped to the metalwork to prevent it being inadvertently drawn into any of the fans.

Did you remember to alter the link on the drive module ‘B’ top board to terminate the existing SCSI bus.

4. Fit the appropriate HDD (RAID or non-RAID) SCSI cable kit between the connector 9 on the motherboard and the drive modules.

Boards

1. Refit any expansion boards that were removed earlier and cable them if required back to their original connections. DO NOT use the bottom EISA slot.

2. If any additional SCSI controllers are to be refitted they must occupy the lowest physical PCI slot first, for BIOS and booting reasons.

3. Refit the SMIC back into the system. It must be fitted in the bottom EISA slot. Use the new ribbon supplied to connect it to the power distribution board at the top of the chamber.

Processors and memory

If the processors and memory were supplied separately, fit them into their appropriate sockets as per the motherboard layout previously shown. Do not forget the VRM for each processor and observe the socket numbering scheme. The heatsink retaining clips are important to get correctly fixed, especially on the sockets on the additional CPU card if it is to be used.

Caution

Keep all processors and memory modules in their original packaging until the last possible moment to minimise the risk due to static.

In case of difficulty, detailed instructions for fitting both memory and processors can be found in the new Owner's Handbook 'FT4200', chapter 2.

Now fit either the bus termination board, or the additional CPU board, as required, into the edge connector at the top of the motherboard. (Secure the additional CPU card into place with the new retaining spar and screw.)

This is important.

Check that the bus and multiplier switches (position 21 on the motherboard diagram) are set to the correct setting for the processors. The switch settings are detailed in the FT4200 Owner’s Handbook.

Check the strict DIMM socket poulation rules carefully in the FT4200 Owner’s Handbook before fitting any memory. Correct fitting of modules is essential.