Figure 11-21 Default Sparcstation Lx Isdn Jumper Settings; Replacing The Nvram - Sun Microsystems SPARC classic Service Manual

11.5.2

Replacing the NVRAM

To install the NVRAM on the main logic board:
1. Hold the NVRAM chip on both sides of the carrier.
2. Carefully align the pins and insert the NVRAM chip into its socket.
The carrier is keyed so the NVRAM can be installed only one way.
3. Push down on the NVRAM chip until it is fully seated in its socket.
4. Refer to Chapter 7 "Internal Access to perform the following procedures:
Detaching the wrist strap
Closing the system unit
Reconnecting system components
5. Refer to Chapter 6 "Power Off and On to turn the power on.
11.6 SPARCstation LX ISDN Jumper Settings
The SPARCstation LX is configured for ISDN support. Shown in
default jumper settings for the main logic board addresses J1801 and J1802,
respectively.
FIGURE 11-21
fully describes these jumper settings.
TABLE 11-3
Default SPARCstation LX ISDN Jumper Settings
Chapter 11
3 3
2 2
1 1
Main Logic Board and Component Replacement
are the
FIGURE 11-21
Jumper block J1801
(pins 1 and 2 jumpered)
Jumper block J1802
(pins 1 and 2 jumpered)
11-33