How to Remove and Replace a Netra t 1120/1125 System Board:ATR:1527059.1:2

Asset ID:	1-71-1527059.1
Update Date:	2017-12-13
Keywords:

Solution Type Technical Instruction Sure

Solution 1527059.1 : How to Remove and Replace a Netra t 1120/1125 System Board:ATR:1527059.1:2

Applies to:

Sun Netra T1120 Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Netra T1125 Server - Version Not Applicable to Not Applicable [Release N/A]
Information in this document applies to any platform.

Goal

How to Remove and Replace a Netra t 1120/1125 System Board

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DISPATCH INSTRUCTIONS WHAT SKILLS DOES THE FIELD ENGINEER/ADMINISTRATOR NEED?:

Netra t 1120/1125 product training is desirable but not required

TIME ESTIMATE: 60 mins

TASK COMPLEXITY: 2

FIELD ENGINEER/ADMINISTRATOR INSTRUCTIONS:

PROBLEM OVERVIEW: Faulty System Board or included component on system board

WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY?:

A data backup is not a pre-requisite but is a wise precaution.
The customer should conduct an orderly software system shutdown.
System should be powered down.

WHAT ACTION DOES THE FIELD ENGINEER/ADMINISTRATOR NEED TO TAKE?:

Motherboard

Caution – Use an ESD mat when working with the motherboard. An ESD mat
contains the cushioning needed to protect the underside components, to prevent
motherboard flexing, and to provide antistatic protection.

Note – If the motherboard is being replaced, remove all SIMMs, PCI card(s), alarms
card, and CPU module prior to removing the motherboard. Note the chassis slot
location for each SIMM and PCI card prior to removal.

Note – The NVRAM/TOD contains the system host identification (ID) and Ethernet
address. If the same ID and Ethernet address are to be used on the replacement
motherboard, remove the NVRAM/TOD from the motherboard and install the same
NVRAM/TOD on the replacement motherboard after installation.

To Remove the Motherboard

Caution – Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing them on any surface.

1. Attach the wrist strap to the rear of the chassis.

2. Power off the system and remove the input power connector(s).

3. Remove the top access cover.

4. Remove the power supply.

5. Depopulate the motherboard by removing the following:

a. CPU module(s).

b. Dual processor bracket.

c. NVRAM/TOD with carrier.

d. Alarms card.

e. PCI card(s).

f. SIMMs.

6. Disconnect the SCSI cable.

7. Disconnect the external cables.

8. Using a No.2 Phillips-head screwdriver, undo the three captive screws securing
the motherboard to the rear chassis panel.

9. Remove the motherboard by sliding it towards the front of the chassis slightly,
then raising the left-hand-side (viewed from the front of system)

Caution – Handle the motherboard by the handle, back panel, or the edges only.

10. Place the motherboard on an ESD mat.

To Replace the Motherboard

1. Attach a wrist strap to the rear of the chassis.

Caution – Handle the motherboard by the handle, back panel, or the edges only.

2. Grasp the handle and the rear connector panel and slide the motherboard into the
chassis.

3. Using long-nose pliers, set the motherboard serial port jumpers J2604 and J2605

Port     Jumper     Pins 1 + 2 Select     Pins 2 + 3 Select     Default Shunt on Pins
ttya     J2604            RS232                        RS423                            2 + 3
ttyb     J2605        RS232                  RS423                      2 + 3

Note – Jumpers J2604 and J2605 can be set to either RS423 or RS232 serial interface.
The jumpers are preset for RS423. RS232 is required for digital telecommunication
within the European Community.

4. Using a No.2 Phillips-head screwdriver, tighten the three captive screws that
secure the motherboard to the rear of the chassis panel starting with the centre screw.

5. Connect the external cables.

6. Populate the motherboard by replacing the following:

a. SIMMs.

b. PCI card(s).

c. Alarms card.

d. NVRAM/TOD with carrier.

e. Dual processor bracket.

f. CPU module(s).

7. Replace the power supply.

8. Replace the top access cover.

9. Power on the system.

10. Detach the wrist strap.

11. Reset the #power-cycles NVRAM variable to zero as follows:

a. Set system power to on.

b. Send a Break command after the system banner appears on the monitor.

c. At the ok prompt, type:

ok> setenv #power-cycles 0

d. Verify that the #power-cycles NVRAM variable increments each time the
system is power cycled.

Note – The Solaris operating environment Power Management software uses the
#power-cycles NVRAM variable to control the frequency of automatic system
shutdown, if it is enabled.

Note – Motherboard jumpers are identified with location numbers. Jumper pins are
located immediately adjacent to the location number. Pin 1 is marked with an
asterisk in any of the positions shown. Ensure that the serial port jumpers are set correctly.

OBTAIN CUSTOMER ACCEPTANCE WHAT ACTION DOES THE FIELD ENGINEER/ADMINISTRATOR NEED TO TAKE TO
RETURN THE SYSTEM TO AN OPERATIONAL STATE:

Boot the system and verify all components are working properly by verifying POST has completed. Logon to root account after booted and running the command # prtdiag ensuring all components present.

PARTS NOTE:

https://support.us.oracle.com/handbook_internal/Systems/Netra_t_1120/Netra_t_1120.html

https://support.oracle.com/handbook_private/Systems/Netra_t_1120/Netra_t_1120.html

https://support.us.oracle.com/handbook_internal/Systems/Netra_t_1125/Netra_t_1125.html

https://support.oracle.com/handbook_private/Systems/Netra_t_1125/Netra_t_1125.html

REFERENCE INFORMATION:

Netra t 1120/1125 Service Manual (805-6804-10): https://support.oracle.com/handbook_private/data/805/805-6804/pdf/

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