2060—Upgrade Processor (486DX and 486DX2 with 72-Pin
Memory SIMM Only) ........................ 4-41
2080—Lithium Battery . . . . . . . . . . . . . . . . . . . . . . . . 4-43
2085—Indicator LED and Cable ................... 4-44
2090—System Board . . . . . . . . . . . . . . . . . . . . . . . . 4-45
2100—Tilt Swivel . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46
Handling ESD-Sensitive Parts ..................... 4-47
Software Installation Procedure .................... 4-48
Parts/Test Point Locations ...................... 5-1
System Board Layouts ......................... 5-2
386SX 25MHz (72-Pin Memory SIMM) System Board Layout ... 5-3
386SX 25MHz (72-Pin Memory SIMM) System Board Layout ... 5-5
386SX 25MHz (72-Pin Memory SIMM) System Board Layout ... 5-7
486SX 20MHz/486SX 25MHz Level 1 (30-Pin Memory SIMM)
System Board Layout ....................... 5-9
486SX 25MHz Level 2 (30-Pin Memory SIMM) System Board
Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
486DX 33MHz (30-Pin Memory SIMM) System Board Layout ... 5-13
486SX 33MHz (72-Pin Memory SIMM) System Board Layout ... 5-15
486DX 25MHz/486DX2 50MHz or 486DX 33MHz/486DX2 66MHz
(72-Pin Memory SIMM) System Board Layout .......... 5-17
Detachable Display System I/O Signal Cable Connector Test Points 5-19
System Board Connector Assignments ............... 5-20
Safety Inspection Guide ....................... 6-1
Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Catalog Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Assembly 1: Machine Types 2133 and 2155 System Unit - Exterior 7-4
Assembly 2: Machine Types 2133 and 2155 System Unit - Interior 7-6
Assembly 3: Machine Type 2168 System Unit - Exterior ..... 7-10
Assembly 4: Machine Type 2168 System Unit - Interior ...... 7-12
Assembly 5: Diskette and Hard Disk Drives - All Machine Types . 7-16
Assembly 6: Display and Power Cord (Linecord) - All Machine
Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Assembly 7: Keyboard and Mouse - All Machine Types ...... 7-22
Assembly 8: Software - Level 1 .................. 7-25
Assembly 9: Software - Level 2 .................. 7-27
Part Number Index .......................... 8-1
Appendix. Model Configurations and FRU Part Numbers ..... A-1
Contents v
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