HP 7936 Support Manual page 16

Figures and Tables
Figure or Table
Page
Figure 1-1. liP 7937 Disc Drives in HP 19511A Cabinet .................................................... 1-3
Figure 3-1. Drive Controls. Connectors, and Indicators ..................................................... 3-6
Figure 3-2. Rear Panel Label Locations ..................................................................... 3-7
Figure 3-3. Maximum Cable Length for HP-IB Channel. ................................................... 3-8
Figure 5-1. Track Format, Logical Vs Physical Addressisng ................................................. 5-4
Figure 5-2. Maintenance Tracks ............................................................................. 5-5
Figure 5-3. Sector Format ........................................................................... ~ ........ 5-6
Figure 5-4. Addressing Strllcture ............................................................................ 5-9
Figure 5-5. Spare Track Scalar Values ...................................................................... 5-10
Figure 5-6. Servo Controller Power On Flowchart. ........................................................ 5-39
Figllre 5-7. Recalibrate Flowchart ......................................................................... 5-41
Figure 5-8. Seek Flowchart ................................................................................. 5-42
Figure 5-9. Bump Seek Flowchart .......................................................................... 5-44
Figure 5-10. Servo Commands Flowchart .................................................................. 5-45
Figure 5-11. Controller Power On Flowchart .............................................................. 5-46
Figure 5-12. Dedicated Servo Code ....................................................................... .5-71
Figure 5-13. Sampled Servo Code .......................................................................... 5-73
Figure 5-14. Dedicated Servo Circuit Timing .............................................................. 5-75
Figure 5-15. Sampled Servo Circuit Timing ................................................................ 5-77
Figure 5-16. Disc Drive Basic Block Diagram .............................................................. 5-79
Figure 6-1. Spring-Type Spindle Lock ....................................................................... 6-9
Figure 6-2. Bracket-Type Spindle Lock ..................................................................... 6-9
Figure 8-1. ERT Log Error Code Byte ...................................................................... 8-9
Figure 8-2. Run Time Log Error Code Byte ................................................................ 8-9
Figure 8-3. Power Supply PCA-A4 Outputs ................................................................ 8-10
Figure 8-4. Servo System Test Point PCA .................................................................. 8-40
Figure 8-5. Read/Write Test Point PCA ................................................................... 8-45
Figure 9-1. Disc Drive, Exploded View ..................................................................... 9-7
Figure 9-2. HP 19511A Cabinet, Exploded View ............................................................ 9-9
Figure 9-3. HP 19512A Rack Slide Kit, Exploded View ................................................... 9-11
Figure 12-1. Drive Dimensions ........................................................................... 12-10
Figure 12-2. HP 19511A Cabinet Dimensions ............................................................ 12-11
Figure 12-3. Airflow Within Drive ....................................................................... 12-12
Figure 12-4. Location of Assemblies and Parts ........................................................... 12-13
Figure 12-5. Primary Power Cable Assembly WI ........................................................ 12-14
Figure 12-6. Power Supply Input Cable Assembly W3 ................................................... 12-15
Figure 12-7. Power Supply Output Cable Assembly W4 ................................................. 12-16
Figure 12-8. Speed Sensor Cable Assembly W5 .......................................................... 12-17
Figure 12-9. Power Jumper Cable Assembly W6 ......................................................... 12-18
Figure 12-10. Signal Jumper Cable Assembly W7 ........................................................ 12-19
Figure 12-11. HDA Cable Assembly W8 ................................................................. 12-20
Figure 12-12. Cabling Diagram ........................................................................... 12-21
Figure 12-13. Servo PCA-Al, Parts Location and Connector Pinout .................................... 12-23
Figure 12-14. R/W PCA-A2, Parts Location and Connector Pinout. .................................... 12-25
Figure 12-15. HDA Assembly A3, Parts Location and Connector Pinout ................................ 12-27
Figure 12-16. Power Supply PCA-A4. Parts Location and Connector Pinout. ........................... 12-29
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