Sun Microsystems Solaris 7 11/99, Руководство по аппаратной платформе

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98 Solaris 7 11/99 Sun Hardware Platform Guide • November 1999
Sun Enterprise 3x00, 4x00, 5x00, and 6x000 systems have a jumper on the clock
board, P0601, which controls if the flash PROM can or cannot be updated.
■
With the jumper P0601 installed, all the flash PROM can be updated.
■
With the jumper P0601 removed, all the flash PROM cannot be updated.
If you previously removed jumper P0601, you must reinstall it before you can
complete the flash PROM update procedure.
Installing the P0601 Jumper
To install the P0601 jumper, follow these steps:
1. Halt the system then turn the keyswitch to the Standby position.
Caution – The clock board is not hot-pluggable. Do not remove the clock board
until the system has been halted and powered off.
2. Remove the clock board from the system (see
FIGURE 5-2
).