xii C141-E201
FIGURES page
Figure 1.1 NC model drives outer view.............................................................................................. 1-6
Figure 1.2 NP model drives outer view............................................................................................... 1-6
Figure 1.3 System configuration......................................................................................................... 1-8
Figure 3.1 Cylinder configuration....................................................................................................... 3-2
Figure 3.2 Spare area in cell................................................................................................................ 3-4
Figure 3.3 Alternate cylinder ..............................................................................................................3-4
Figure 3.4 Track format ......................................................................................................................3-5
Figure 3.5 Track skew/head skew....................................................................................................... 3-6
Figure 3.6 Sector format .....................................................................................................................3-6
Figure 3.7 Alternate block allocation by FORMAT UNIT command...............................................3-12
Figure 3.8 Alternate block allocation by REASSIGN BLOCKS command......................................3-13
Figure 4.1 NC external dimensions..................................................................................................... 4-2
Figure 4.2 NP external dimensions..................................................................................................... 4-3
Figure 4.3 IDD orientations ................................................................................................................4-4
Figure 4.4 Mounting frame structure...................................................................................................4-5
Figure 4.5 Limitation of side-mounting...............................................................................................4-5
Figure 4.6 Surface temperature measurement points...........................................................................4-6
Figure 4.7 Service clearance area........................................................................................................ 4-7
Figure 4.8 Spin-up current waveform (+12 VDC).............................................................................. 4-8
Figure 4.9 Power on/off sequence (1)................................................................................................. 4-8
Figure 4.10 Power on/off sequence (2)................................................................................................. 4-9
Figure 4.11 Power on/off sequence (3)................................................................................................. 4-9
Figure 4.12 AC noise filter (recommended)........................................................................................4-11
Figure 4.13 NC connectors location....................................................................................................4-11
Figure 4.14 SCA2 type 16-bit SCSI connector................................................................................... 4-12
Figure 4.15 NP connectors and terminals location..............................................................................4-13
Figure 4.16 68 pin type 16-bit SCSI interface connector.................................................................... 4-14
Figure 4.17 Power supply connector (68 pin type 16-bit SCSI)..........................................................4-14
Figure 4.18 External operator panel connector (CN1)........................................................................ 4-15
Figure 4.19 External operator panel connector (CN2)........................................................................ 4-15
Figure 4.20 16-bit SCSI ID external input.......................................................................................... 4-16