PCC D3400 - Page 11

LIST OF ILLUSTRATIONS (Continued)
Figure
Page
4-9 Start/Stop Control, Functional Block Diagram .......................... , 4-39
4-10 Spindle Speed Control, Functional Block Diagram ....................... 4-41
4-11
Position Control Logic, Functional Block Diagram ....................... 4-43
4-12 Sector Electronics, Functional Block Diagram ........................... 4-45
4-13 Power Supply, Functional Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4-32
4-14
Transformer Primary Connections ..................................... 4-33
4-15 Temperature Compensation, Functional Block Diagram ................... 4-47
5-1 Servo PCBA Test Point and Connector Placement ........................ 5-2
5-2 Position Transducer Output Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-6
5-3
Position Transducer Signal Ampl ifier Outputs . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-6
5-4 Fault Detection Waveforms ........................................... 5-12
5-5 Read/Write C PCBA, Test Point and Connector Placement ............... 5-14
5-6 Logic PCBA, Test Point and Connector Placement ....................... 5-20
5-7 Motor Control PCBA, Test Point and Connector Placement. . . . . . . . . . . . . . .. 5-43
5-8 Temperature Compensation PCBA, Test Point and Connector Placement. . .. 5-45
6-1 Slider Defects and Head Contamination which Require Cleaning Action ..... 6-6
6-2 Slider Defects and Head Contamination which Require Head Replacement ... 6-7
6-3
AC Motor Speed Control Signal Pulsewidth ............................. 6-13
6-4 Position Transducer Signal Amplifier Outputs . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-17
6-5 X + 0 Analog Signal Added to X + 90 Digital Signal. . . . . . . . . . . . . . . . . . . . .. 6-20
6-6 X + 0 Waveform, One-Track Repetitive Seek ............................ 6-28
6-7 Balanced Waveform, One-Track Repetitive Seek ......................... 6-28
6-8 Analog Waveform Limits, One-Track Repetitive Seek ..................... 6-28
6-9 X + 0 Waveform Crossover .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-29
6-10 Current Waveform After Adjustment of R111 ............................. 6-33
6-11 Velocity Feedback Waveform, TP16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-33
6-12 X + 0 Waveform 000-001 Repetitive Track Seek .......................... 6-34
6-13 SPRCG, SPTIG, SPQCG Signals, Repetitive Restore Mode ................ 6-36
6-14 Correct Relationship Between SPQCG and SPTIG Signals, Extended ........ 6-37
6-15
Index Signal, TP3, Repetitive Restore Mode ............................. 6-38
6-16 X + 0 Overshoot and Settling Response Waveforms ...................... 6-40
6-17 X + 90 Waveform for Long Track Seeks ................................. 6-41
6-18 Quadrature Relationship Between Sector Phase-Lock-Loop Square Waves ... 6-42
6-19
Read Pulse Narrow 1'0nes' Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-44
6-20
Read Clock/Read Data Pulsewidth ..................................... 6-46
6-21 Cylinder Address Temperature/Voltage Conversion at TP4 ................ 6-49
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