MPI 40 Series - Page 5

TABLE OF CONTENTS (continued)
SECTION 3 THEORY OF OPERATION
(cont'd)
3.3
3.4
3.5
3.2.1 Drive Mechanism
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3.2.2 Door Mechanism
3.2.3
Cone/Clutch Assembly
3.2.4
Ejector Assembly
3.2.5
Pressure Pad Assembly
ELECTRO-MECHANICAL ASSEMBLIES
3.3.1 Head Load Solenoid
3.3.2 Head/Carriage Assembly
3.3.3 Stepper Motor/Band Assembly •
3.3.4 Spindle And Motor •
3.3.5 Door Lock Mechanism
ELECTRICAL ASSEMBLIES
3.4.1 Control Electronics
3.4.2
Spindle Servo PCBA
PCBA
3.4.3
Write Protect
Sensors
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3.4.4
Track 00 And Track 43 Sensors
3.4.5
Index Sensor
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3.4.6 Activity Indicator
3.4.7 Read/Write Heads
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ELECTRICAL INTERFACE •
3.5.1 Input Lines •
Motor' On •
.
3.5.1.1
3.5.1.2
Drive Select 1 - 4
3.5.1.3 Side Select
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3.5.1.4 Direction Select ••
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3-5
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3-8
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