User manual MAXTOR DECATHLON 850

[. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Decathlon 850 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ATA Interface Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Decathlon 850 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ATA Interface Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The drive may come configured with either of two printed circuit boards. This manual distinguishes the drives as Type A and Type B. The interface connector and the mounting procedure are the same for both drives. The drive is configured for use in the computer using the options jumper block (J8). The options jumper blocks are different sizes. Refer to Figure 3 on page 18 if you are configuring a Type A drive and Figure 5 on page 20 if your are configuring a Type B drive. 2. 1 Handling and static-discharge precautions After you unpack the drive, and before you install it in a system, be careful not to damage it through mishandling or static discharge. Wool and synthetic clothing, carpet, plastic and styrofoam are contributors to static-charge buildup. This charge is released when you touch another conductor and can damage sensitive components in the drive. Observe the following standard handling and static-discharge precautions: Caution: · Keep the drive in its static-shielded bag until you are ready to complete the installation. Do not attach any cables to the drive while it is in its static-shielded bag. · Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire installation procedure. · Handle the drive by its edges or frame only. · The drive is extremely fragile--handle it with care. Do not press down on the drive top cover. · Always rest the drive on a padded, antistatic surface until you mount it in the computer. · Do not touch the connector pins or the printed circuit board. Do not remove the factory-installed labels from the drive or cover them with additional labels. Some factory-installed labels contain information needed to service the drive. Others are used to seal out dirt and contamination. 16 Decathlon 850 ATA Product Manual, July 1995 2. 2 I/O connector The ST5850A uses a 40-pin, male I/O connector with two rows of twenty pins each. The even-numbered pins are closest to the printed circuit board's edge. Pin 1 is near the 4-pin power connector. [. . . ] The features that are set to default by the factory are indicated in the Feature column. Feature Value 02H 03H 55H 82H AAH Feature Enable write immediate and write merging (default) Set transfer mode Disable read look ahead cache Disable write immediate and write merging Enable read look-ahead (default) To use the command: 1. Write the feature value to the Features register. Write the Set Features command to the command register. [. . . ]