
7 8 5 0 A V    MAXTOR
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        | 1648|     |
Capacity form/unform   853/      MB        Heads           4|   16|     |
Seek time   / track  12.0/ 3.0 ms          Sector/track     |   63|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer            64 KB              Landing Zone
Data transfer rate    4.500 MB/S int       Bytes/Sector      512
                     11.100 MB/S ext PIO3
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 71
Power: sleep          0.3 W     Humidity     %         5 95    |      5 95
       standby        0.5 W     Altitude    km    -0.200  3.048|
       idle           3.5 W     Shock        g        35       |    120
       seek           3.2 W     Rotation   RPM      3551
       read/write     3.9 W     Acoustic   dBA
       spin-up        9.9 W     ECC        Bit
                                MTBF         h     300000
                                Warranty Month        24
Lift/Lock/Park     YES          Certificates


**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
MAXTOR   7850AV/7425AV QUICK REFERENCE 11/94

  +---------------------------------------------------------+
  |                                            *****        |
  |                                            *****        |XX I
  |                                          J20---J24      |XX N
  |                                                         |XX T
  |                                                         |XX E
  |                                                         |XX R
  |                                                         |XX F
  |                                                         |XX A
  |                                                         |XX C
  |                       Component Side                    |XX E
  |                                                         |XX
  |                                                        1|XX
  |                                                         |
  |                                                        1|XX POWER
  |                                                         |XX
  |                                                         |
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
MAXTOR   7850AV/7425AV  QUICK REFERENCE 11/94

 Jumper Setting
 ==============

 NOTE
 With the 7850AV drive, the full capacity may be achieved only by
 using LBA mode, if supported by the system, this is due to BIOS
 limitations. Check your system manual regarding LBA support. The
 jumper between J23/J24 is a spare Jumper which could be used to set
 J22 (1024 x 16 x 63).

 Jumper J21 is factory reserved. Do not use.

 +---------------------+-----+-----+-----+-----+-------+
 |                     | J24 | J23 | J22 | J20 |       |
 +---------------------+-----+-----+-----+-----+-------+
 |Cable Select         |     |     |     |     |       |
 |Disabled             |  O  |     |     |     |default|
 |Enabled              |  J  |     |     |     |       |
 +---------------------+-----+-----+-----+-----+-------+
 |Write Cache          |     |     |     |     |       |
 |Enabled              |     |  O  |     |     |default|
 |Disabled             |     |  J  |     |     |       |
 +---------------------+-----+-----+-----+-----+-------+
 |Default Parameters   |     |     |     |     |       |
 |for 7850AV only      |     |     |     |     |       |
 |1654 x 16 x 63       |     |     |  O  |     |       |
 |1024 x 16 x 63       |     |     |  J  |     |       |
 +---------------------+-----+-----+-----+-----+-------+
 |Master/Slave         |     |     |     |     |       |
 |Only Drive in System |     |     |     |  J  |default|
 |Master               |     |     |     |  J  |       |
 |Slave                |     |     |     |  O  |       |
 +---------------------+-----+-----+-----+-----+-------+



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
MAXTOR   7850AV/7425AV  QUICK REFERENCE 11/94

 Notes on installation
 =====================

 Installation direction
 ----------------------

     horizontally                           vertically
   +-----------------+             +--+                       +--+
   |                 |             |  +-----+           +-----+  |
   |                 |             |  |     |           |     |  |
 +-+-----------------+-+           |  |     |           |     |  |
 +---------------------+           |  |     |           |     |  |
                                   |  |     |           |     |  |
                                   |  |     |           |     |  |
 +---------------------+           |  +-----+           +-----+  |
 +-+-----------------+-+           +--+                       +--+
   |                 |
   |                 |
   +-----------------+

 The drive will operate in all axis (6 directions).



 Installation Steps
 ==================
 - Switch off your System Power first! Disconnect the power plug.

 - Install a ribbon connector. The striped edge of this cable re-
   presents pin 1 and must be oriented towards pin 1 at the drive
   connector and the host connector.

 - If AT BIOS supports user programable parameters, program System
   BIOS with the default Parameters. otherwise choose a Type that
   closely matches, but do not exceed, the drives formatted capacity.

 - Secure the drive in a suitable drive bay with 6-32 X 1/4" screws.

 - The drive is now ready for partitioning and high-level formatting
   with any operating system.


 DC Power and pin connector assignments
 --------------------------------------
  pin 1    +12 VDC
  pin 2    +12 Volts Return
  pin 3    + 5 Volts Return
  pin 4    + 5 VDC



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
MAXTOR   7850AV/7425AV  QUICK REFERENCE 11/94

 Technical Notes
 ---------------
 - Maxtor defines one Megabyte as 1.000.000 bytes
 - Drive is low-level formatted with 1:1 interleave at factory, with
   any defects retired to a dedicated non-destructive zone.

 NOTE
 WPC and Landing Zone BIOS entries do not need a specific number for
 proper operation. (Ignored by the drive. Maxtor hard drives will
 override any numbers programmed.)


