Laptop User Manual

•
Check to see that the battery pack is installed correctly (try using a
recharged battery pack if battery is discharged)
•
If the AC outlet voltage, AC Adapter, and battery packs test normal but
the computer will not power up, replace the Power Supply Board and/or
Battery Board as described in Section 6.
MAIN BOARD
SYSTEM &
SVGA BIOS
INTERNAL 1.44 MB
FLOPPY DISK DRIVE
PARALLEL
PRINTER PORT
Super I/O
Controller
RS232
SERIAL PORT
Drivers/
Receivers
Expansion Bus
Connector
PCMCIA Adapter
UM8365A
SIR
Interface
PCMCIA Option Slot(s)
Pentium
Processor
(P54C/LM)
IR/Sound
Board
DRAM
(2 Bank)
PCI Bus
Cache MEMORY
DBC
82C556
Audio IN/OUT
Mic In
CPU Data
System
Controller
82C557
CPU Address
IPC
Memory
Data
EXTERNAL
SVGA MONITOR
Input From
AC Adapter
Battery Packs
Video
Controller
INTERNAL KEYBOARD
1 MB
Video RAM
640 X 480
SVGA LCD
INTERNAL LCD DISPLAY
Internal
Glidepad
PMU/Keyboard
Controller
HDD
CD-ROM
SIMM Memory
Expansion
Modules
RTC
82C602A
PCI Bus
PCI Bus
IR/Audio
Board
Figure 5-2 Troubleshooting Block Diagram
5-4
Troubleshooting Procedures