C.4.2 Flash PROM Jumpers

Flash PROM jumpers J2703 and J2704 are for reprogramming specific code blocks and remote programming of the flash PROM. TABLE C-17identifies the flash PROM jumper settings. The default shunt setting of J2703 is on pins 1 and 2. Placing the shunt on pins 2 and 3 enables reprogramming of the flash PROM.

TABLE C-17

Flash PROM Jumper Settings

 

 

 

 

 

 

 

 

 

 

Default

 

 

 

 

Jumper on

 

Jumper

Pins 1 + 2 Select

Pins 2 +3 Select

Pins

Signal Controlled

 

 

 

 

 

J2703

Write protect

Write Enable

1 + 2

FLASH PROM PROG

 

 

 

 

ENABLE

J2704

High half

Normal

2 + 3

XOR LOGIC SET

 

booting

Booting

 

 

 

 

 

 

 

C.5 Enclosure

The system unit uses an enclosure that reflects style, ergonomics, serviceability, functionality, versatility, and quality. Physical orientation allows for a rack-mount, desktop, or under desk installation. The enclosure design complies with all necessary environmental and regulatory specifications.

C.5.1 Enclosure Basics

Overall dimensions of the enclosure are 17.70 inches (45.00 cm) x 7.50 inches

(19.00 cm) x 17.60 inches (49.60 cm). The enclosure houses:

One 3.5-inch diskette drive

One 1.6-inch CD-ROM drive

One spare 3.5-inch device slot

Note The CD-ROM drive slot is used for either the CD-ROM drive or an X-option-selected tape drive.

Two 1-inch single-connector 3.5-inch disk drives

Two plug-in UltraSPARC modules

Appendix C Functional Description C-47

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Sun Microsystems 60 service manual Flash Prom Jumpers, Enclosure Basics, Flash Prom Jumper Settings