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Basic Troubleshooting 5-5
Firmware configuration jumper block, J2; the pins are
numbered as shown:
15 13 11 9 7 5 3 1
16 14 12 10 8 6 4 2
Jumper J41 (not used)
CPU disable jumper J1 (for factory use only)
IDE connector 1 (CD-ROM)
PCI riser slot
5.3.1 J2 Firmware Configuration Jumper Block
The J2 jumper may be used by customers to change the firmware
configuration setting.
The DS20L system motherboard has an eight-position, 2-pin firmware
configuration jumper block used for troubleshooting and error recovery. See
Figure 5-2.
• J2 jumper pins 1 through 6 are used for configuration of the DS20L system.
• Pins 7-8, 9-10, 11-12, and 13-14 are reserved or not used.
Table 5–4 shows the J2 configuration jumper pin functions for pins 1-2, 3-4, 5-6,
and 15-16.