MPI 40 Series - Preventive Maintenance; Read;Write Head(S) and Load Pad Inspection

C. Female connectors that carry signals internal to the drive slip
over pins of the male connectors. Most of the connectors are
keyed so that they cannot be plugged into the wrong receptacle.
However, they can be inserted upside down. For positioning
accuracy one side of the female connectors is slotted with so-
called "windows" over the pins. Some installation instructions
are given to install the connectors with the window side facing
a certain direction, i.e., toward the chassis, away from the
chassis, etc.
D. Do not use magnetic tools within the drive.
E. Instructions are given to "remove screws or replace screws"; it
is understood that flat washers, lock washers, and shims (where
required) are also to be removed and, more importantly, replaced.
It is important to always replace the exact quantity of washers
and shims that were removed and in the same order.
4.3 PREVENTIVE MAINTENANCE
The only recommended preventive maintenance to ensure optimum per-
formance of the disk drive is periodic cleaning of the read/write head(s)
and inspection of the head load pad.
4.3.1 Read/Write Head(s) and Load Pad Inspection
Inspect the load pad (or top head) for excessive oxide, using a
dental mirror.
I CAUTION I
Do not move the upper head arm any
further than is allowed by the door in
its open position.
To clean the head(s) use a lint-free cloth or a cotton swab
moistened with either methyl alcohol or 91% Isopropyl alcohol.
Wipe the head(s) carefully to remove all· accumulated oxide and
dirt. Dry the head(s) using a lint-free cloth. If cleaning the
head(s) does not improve operation, refer to the troubleshooting
section. If head{s) are damaged or worn, refer to the head/car-
riage. replacement procedure (paragraph 4 .5 .10). If head load pad
is dirty or worn, refer to head load pad replacement procedure
(paragraph 4.5.12).
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