Troubleshooting Procedures
5-21
Figure 5-5 FDD Interface Troubleshooting Diagram
4
BIOS Menu
Setup
Enter Correct FDD type
Floppy Diskette
properly formatted?
Format Diskette or
Change Diskette
FDD Power Checked?
Check U605 (9956)
Pin1=5V, CN29 Pin53
(motor-ON0#)=5V
FDD Motor Checked?
Check CN17 Pin51
(Motor-0N04) signal
END
Yes
No
Yes
Yes
No
No
No
Seek Operation Checked?
Check Read or Write
Operation
Check CN17 Pin44
(TRK0), Pin50 (step #),
PIN 60 (Index#) Signals
Check CN17
PIN48(Write-Data#),
PIN46(Write-Gate#),
PIN40(F-Read-Data#)
Yes
Yes
Yes
No
No
O.K.?
System Fails to Boot:
FDD Interface Check
Summary of Contents for Extensa 660 Series
Page 1: ...Maintenance Manual ExtensaTM 660 Series Notebook Computers 9813214 0001 Rev A February 1997 ...
Page 42: ......
Page 60: ......
Page 94: ......
Page 122: ......
Page 124: ...A 2 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 1 of 23 ...
Page 125: ...Schematic Diagrams A 3 Figure A 2 Motherboard PWB Logic Diagrams Sheet 2 of 23 ...
Page 126: ...A 4 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 3 of 23 ...
Page 127: ...Schematic Diagrams A 5 Figure A 1 Motherboard PWB Logic Diagrams Sheet 4 of 23 ...
Page 128: ...A 6 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 5 of 23 ...
Page 129: ...Schematic Diagrams A 7 Figure A 1 Motherboard PWB Logic Diagrams Sheet 6 of 23 ...
Page 130: ...A 8 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 7 of 23 ...
Page 131: ...Schematic Diagrams A 9 Figure A 1 Motherboard PWB Logic Diagrams Sheet 8 of 23 ...
Page 132: ...A 10 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 9 of 23 ...
Page 133: ...Schematic Diagrams A 11 Figure A 1 Motherboard PWB Logic Diagrams Sheet 10 of 23 ...
Page 134: ...A 12 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 11 of 23 ...
Page 135: ...Schematic Diagrams A 13 Figure A 1 Motherboard PWB Logic Diagrams Sheet 12 of 23 ...
Page 136: ...A 14 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 13 of 23 ...
Page 137: ...Schematic Diagrams A 15 Figure A 1 Motherboard PWB Logic Diagrams Sheet 14 of 23 ...
Page 138: ...A 16 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 15 of 23 ...
Page 139: ...Schematic Diagrams A 17 Figure A 1 Motherboard PWB Logic Diagrams Sheet 16 of 23 ...
Page 140: ...A 18 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 17 of 23 ...
Page 141: ...Schematic Diagrams A 19 Figure A 1 Motherboard PWB Logic Diagrams Sheet 18 of 23 ...
Page 142: ...A 20 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 19 of 23 ...
Page 143: ...Schematic Diagrams A 21 Figure A 1 Motherboard PWB Logic Diagrams Sheet 20 of 23 ...
Page 144: ...A 22 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 21 of 23 ...
Page 145: ...Schematic Diagrams A 23 Figure A 1 Motherboard PWB Logic Diagrams Sheet 22 of 23 ...
Page 146: ...A 24 Schematic Diagrams Figure A 1 Motherboard PWB Logic Diagrams Sheet 23 of 23 ...
Page 147: ......
