9–12
Chapter 9 – Controllers and Floppy Disk Drives
RS232/RS422
TEST
5V
L1
L2
L3
PARALLEL
Figure 9–2. Data Controller Board Diagnostic LED Locations
As the Data Controller Board starts and initializes, LEDs L1 and L2 will indicate the various portions of the
boot sequence, as shown in Table 9–1.
Table 9–1. Data Controller Board Boot Sequence
L1
L2
Meaning
Off
Off
Initial State
On
On
Running DRAM Diagnostics
Off
Off
Running I/O Diagnostics
On
On
Reading Sector 0 from Disk
On
Off
Searching for Boot File
Off
On
Loading Boot File
On
On
Preparing for Execution
Off
Off
Normal Execution State
Summary of Contents for L1024
Page 1: ...R...
Page 2: ......
Page 3: ...R P N 704792 001 Rev C...
Page 18: ...1 8 Chapter 1 Introduction...
Page 19: ...2 1 Chapter 2 Clamshell Chapter 2 Clamshell Clamshell and Subassemblies...
Page 46: ...4 4 Chapter 4 Developer Subsystem...
Page 47: ...5 1 Chapter 5 Transfer Subsystem Chapter 5 Transfer Subsystem Transfer Charger...
Page 63: ...5 17 Chapter 5 Transfer Subsystem Detail 5 4 Removing the Lamp Connector...
Page 65: ...6 1 Chapter 6 Paper Feed Subsystem Chapter 6 Paper Feed Subsystem Paper Feed Subsystem...
Page 82: ...6 18 Chapter 6 Paper Feed Subsystem Step 3 Step 2 Detail 6 5 Removing Connectors...
Page 97: ...7 1 Chapter 7 Fuser Subsystem Chapter 7 Fuser Subsystem Fuser Subsystem...
Page 137: ...8 5 Chapter 8 Power Supplies 1 1 2 2 High Voltage Power Supply...
Page 144: ...8 12 Chapter 8 Power Supplies Figure 8 4 Removing the LVPS Cables...
Page 146: ...8 14 Chapter 8 Power Supplies 5 4 2 3 1 Figure 8 5 Removing the LVPS...
Page 147: ...8 15 Chapter 8 Power Supplies Cable Routing Figure 8 6 LVPS Cable Routing...
Page 150: ...8 18 Chapter 8 Power Supplies Figure 8 9 Removing the LVPS Cables...
Page 152: ...8 20 Chapter 8 Power Supplies 5 4 2 3 1 Figure 8 10 Removing the LVPS...
Page 153: ...8 21 Chapter 8 Power Supplies Cable Routing Figure 8 11 LVPS Cable Routing...
Page 199: ...10 1 Chapter 10 Control Panel Chapter 10 Control Panel Keypad LCD Control Panel...
Page 215: ...11 9 Chapter 11 Laser Scanning Unit LSU Subsystem Detail 11 1 Removing the Top Cover...
Page 225: ...12 5 Chapter 12 Covers Frame and Backplane Board 14 1 15 1 21 1 Hinge Covers...
Page 250: ...12 30 Chapter 12 Covers Frame and Backplane Board Figure 12 12 Removing Cables...
Page 252: ...12 32 Chapter 12 Covers Frame and Backplane Board 5 4 2 3 1 Figure 12 13 Removing the LVPS...
Page 269: ...12 49 Chapter 12 Covers Frame and Backplane Board Figure 12 27 Removing Cables...
Page 319: ...Appendix B Wire Data B 1 Appendix B Wire Data...
Page 322: ...Appendix B Wire Data B 4...
Page 327: ...C 5 Appendix C Continuous Form Stacker 15 2 10 1 Figure C 2...
Page 331: ...C 9 Appendix C Continuous Form Stacker 35 2 40 1 55 1 50 1 45 1 Figure C 4...
Page 333: ...C 11 Appendix C Continuous Form Stacker 60 2 Figure C 5...
Page 337: ...C 15 Appendix C Continuous Form Stacker 100 1 105 2 115 1 110 1 ROTATED 180 Figure C 7...
Page 349: ...C 27 Appendix C Continuous Form Stacker 1 2 Figure C 16 Removing the Vertical Frame Braces...
Page 371: ......
Page 372: ...704792 001C...