Hard Drive: MAXTOR: 7425AV 426MB 3.5"/SL ATA2 FAST
7 4 2 5 A V MAXTOR
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/SLIMLINE Cylinders | 1000| |
Capacity form/unform 426/ MB Heads 2| 16| |
Seek time / track 12.0/ 3.0 ms Sector/track | 52| |
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
Layout
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 | | +---------------------------------------------------------+
Jumpers
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 | | +---------------------+-----+-----+-----+-----+-------+
Install
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
Features
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.)
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