Sun Microsystems Netra t 1120, Service Manual

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10-10 Netra t 1120/1125 Service Manual • August 1998
10.3 NVRAM/TOD
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.
10.3.1 To Remove the NVRAM/TOD
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.
See Section 7.1 “To Attach the Wrist Strap” on page 7-1.
2. Power off the system and remove the input power connector(s).
See Section 6.2 “To Power Off the System” on page 6-3.
3. Remove the top access cover.
See Section 7.2 “To Remove the Top Access Cover” on page 7-4.
4. Remove the power supply from the system (without disconnecting the cables) and
rest it on the enclosure.
See Section 8.1.1 “To Remove the Power Supply” on page 8-1.
5. Locate the NVRAM/TOD and carrier on the motherboard.
6. Grasp the NVRAM/TOD carrier at each end and pull straight up.
Note –
Gently rock the NVRAM/TOD from side to side as necessary.
7. Place the NVRAM/TOD and carrier on an ESD mat.
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