Dell Inspiron Xpi Cd Service Guide

							System Overview 1-3
Figure 1-2.  Back View of the Notebook Computer
Indicator Panel
Figure 1-3.  Indicator Panel
PC Card slot
power switchhard-disk drive
security 
cable slot
DC power input connector tilt-support foot Advanced Port 
Replicator connector    indicator panel
I/O panel
infrared portaudio jacks (3)
speaker
LCD panel
power/suspend indicator
diskette-drive access indicator
PC Card access indicator
low-battery indicator
charging indicatorNum Lock indicator
Caps Lock indicator
Scroll Lock indicator Legend
hard-disk/CD-ROM drive 
access indicator 
						

							1-4 Dell Latitude XPi CD Service Manual
The portable computer has nine indicators: six on the display assembly’s indica-
tor panel and three on the keyboard assembly. Each of the six indicators on the 
display assembly has an identical pair of LEDs: one is visible on the indicator 
panel when the display is open, and the other is visible through an aperture on 
the outside of the display assembly when the display is fully closed. The sub-
sections that follow describe the functions of the indicators.
Power/Suspend Indicator
The power/suspend indicator is a green LED. After the computer is turned on, 
the power/suspend indicator lights up constantly to indicate that the computer is 
receiving stable power. When the computer enters suspend mode, the indicator 
blinks once approximately every 8 seconds.
Diskette-Drive Access Indicator
The diskette-drive access indicator is a green LED. The indicator lights when 
data is being transferred to or from the diskette drive.
Hard-Disk/CD-ROM Drive Access Indicator
The hard-disk/CD-ROM drive access indicator is a green LED. The indicator 
lights when data is being transferred to or from the hard-disk drive or the 
CD-ROM.
PC Card Access Indicator
The PC Card access indicator is a green LED. The indicator lights when data is 
being transferred to or from an installed PC Card (also known as a PCMCIA 
card).
Low-Battery Indicator
The low-battery indicator is an amber LED. This indicator is used in conjunc-
tion with the speaker to indicate either of the following low-battery conditions:
•The first low-battery warning occurs when the main battery’s charge has 
been depleted to 8 percent of its fully charged condition. The low-battery 
indicator turns on and the speaker emits five beeps.
•The second and final low-battery warning occurs when the main battery’s 
charge has been depleted to 3 percent of its fully charged condition. The 
speaker beeps twice every 1 to 2 seconds for 15 seconds; then the system 
does a suspend-to-disk operation automatically before shutting down.
Charging Indicator
The charging indicator is an amber LED. The indicator turns on when the main 
battery begins charging and blinks to show the battery is fully charged. 
						

							System Overview 1-5
Keyboard Indicators
The keyboard controls the operation of the numeric lock (Num Lock) indicator, 
the capitals lock (Caps Lock) indicator, and the Scroll Lock indicator, all of 
which are visible through apertures at the top of the keyboard. These indicators 
are associated with the  key, the  key, and the 
 key; when lit, the LEDs indicate the active state of these 
keys.
Controlling Computer Power  
The power button does not directly control power to the computer. Instead, 
when you slide the power button toward the front of the computer and then 
release it, the button momentarily closes the power switch on the system board. 
The power switch sends a signal to the power management controller, signaling 
the controller to initiate a change of state of the computer’s power. The resulting 
power state depends on the present power state. The following subsection gives 
a description of the power states.
Power States
Sliding the power button toward the front of the computer initiates a change 
from the current power state to a different state. The protocols for the power 
state changes are as follows:
•If the computer is off (no indicators on) and the display is open and/or an 
external monitor is attached to the computer, sliding the power button ini-
tiates a boot operation.
•If the computer is off, if the display is closed, and if no external monitor is 
attached, sliding the power button causes the computer to run the POST and 
then turn off.
•If the computer is on and the SYSTEM SWITCH option in System Setup is set 
to 
ON/OFF, sliding the power button turns off the computer.
•If the computer is on and the SYSTEM SWITCH option in System Setup is set 
to 
S2D/RFD, sliding the power button causes the computer to enter suspend-
to-disk mode.
•If the computer is in suspend mode (the power/suspend indicator flashes 
every 8 seconds), if the 
SYSTEM SWITCH option in System Setup is set to 
ON/OFF, and if the display is open or an external monitor is attached, sliding 
the power button turns off the computer.
•If the computer is in suspend mode (the power/suspend indicator flashes 
every 8 seconds), if the 
SYSTEM SWITCH option in System Setup is set to 
S2D/RFD, and if the display is open or an external monitor is attached, sliding 
the power button causes the computer to enter suspend-to-disk mode. 
						

							1-6 Dell Latitude XPi CD Service Manual
•If the computer is in suspend mode (the power/suspend indicator flashes 
every 8 seconds), if the display is closed, and if no external monitor is 
attached, sliding the power button has no effect on the power state. The 
computer remains in suspend mode.
•If the computer is in suspend-to-disk mode, sliding the power button causes 
the computer to initiate the resume-from-disk operation.
Interrupt Assignments
Table 1-1.  Interrupt Assignments
IRQ Line Used/Available
IRQ0 Generated by the system timer
IRQ1 Generated by the keyboard controller to signal that the keyboard 
output buffer is full
IRQ2 Generated internally by the interrupt controller to enable IRQ8 
through IRQ15
IRQ3 Available for use by a PC Card unless the built-in serial port or 
infrared port is configured for COM2 (the default)
IRQ4 Available for use by a PC Card unless the built-in serial port is 
configured for COM1 (the default)
IRQ5 Available for use by the audio controller
IRQ6 Generated by the diskette drive controller to indicate that the 
diskette drive requires the attention of the microprocessor
IRQ7 Available for use by a PC Card or audio controller if the built-in 
parallel port is disabled
IRQ8 Generated by the system I/O controller’s RTC
IRQ9 Available for use by the PC Card interrupt controller or the 
audio controller
IRQ10 Available for use by a PC Card or audio controller unless the 
Advanced Port Replicator is attached
IRQ11 Available for use by a PC Card unless the Advanced Port Repli-
cator is attached
IRQ12 Generated by the keyboard controller to indicate that the output 
buffer of the integrated trackball or external PS/2 mouse is full
IRQ13 Reserved for use by the internal coprocessor
IRQ14 Generated by the hard-disk drive to indicate that the drive 
requires the attention of the microprocessor
IRQ15 Reserved for the CD-ROM drive 
						

							System Overview 1-7
Technical Specifications
Table 1-2.  Technical Specifications
Microprocessor
Microprocessor type . . . . . . . . . . . Intel Pentium microprocessor
Microprocessor speed . . . . . . . . . . 150 MHz
Bus architecture  . . . . . . . . . . . . . . PCI
Internal cache memory  . . . . . . . . . 16 KB
External cache memory. . . . . . . . . 256 KB pipelined-burst SRAM
Math coprocessor  . . . . . . . . . . . . . internal to the microprocessor
Chip Set and Bus
System chip set . . . . . . . . . . . . . . . Pico Power Vesuvius-LS Core Logic
Microprocessor data bus width . . .   64 bits
DRAM bus width  . . . . . . . . . . . . . 64 bits 
Address bus width. . . . . . . . . . . . . 32 bits
Security EEPROM  . . . . . . . . . . . . 256 bytes
Flash EPROM . . . . . . . . . . . . . . . . 256 KB
Local bus . . . . . . . . . . . . . . . . . . . . 60 MHz
PCI bus . . . . . . . . . . . . . . . . . . . . . 30 MHz
PC Card
PC Card controller  . . . . . . . . . . . . Texas Instruments PCI1130 CardBus 
controller
PC Card connectors  . . . . . . . . . . . two (supports type I and type II cards in 
any combination; type III cards can be 
used only with type I or type II cards)
Cards supported  . . . . . . . . . . . . . . 3.3-V and 5-V
PC Card connector size . . . . . . . . . 68 pins
Data width (maximum) . . . . . . . . . 32 bits
Memory
Architecture  . . . . . . . . . . . . . . . . .
EDO memory1 
Memory module sockets . . . . . . . . two
1The system supports fast-page-mode memory modules for memory upgrades. 
						

							1-8 Dell Latitude XPi CD Service Manual
Memory (Continued)
Memory module type and 
capacities  . . . . . . . . . . . . . . . . . . . 8- and 16-MB fast-page mode
Standard RAM . . . . . . . . . . . . . . . 16 MB (EDO) on  system board
Maximum RAM . . . . . . . . . . . . . . 48 MB
Memory access time:
tRAC  . . . . . . . . . . . . . . . . . . . 70 ns
tCAC  . . . . . . . . . . . . . . . . . . . 20 ns
BIOS address  . . . . . . . . . . . . . . . . F000:0000
Connectors
Serial (DTE) . . . . . . . . . . . . . . . . . one 9-pin connector; 16550-compatible, 
16-byte buffer 
Parallel  . . . . . . . . . . . . . . . . . . . . . one 25-hole connector; unidirectional, 
bidirectional, EPP 1.9, or ECP
Monitor . . . . . . . . . . . . . . . . . . . . . one 15-hole connector
PS/2  . . . . . . . . . . . . . . . . . . . . . . . one 6-pin mini-DIN (this connector does 
not support more than one device at a time)
Infrared . . . . . . . . . . . . . . . . . . . . . two ports compatible with IrDA 
Standard 1.1 (Fast IR)
Audio  . . . . . . . . . . . . . . . . . . . . . . microphone-in
line-in/audio-in
headphones/speakers
Advanced Port Replicator  . . . . . . 200-pin connector
Audio
Audio type  . . . . . . . . . . . . . . . . . . SoundBlasterPro-compatible 3.01 
voice and music functions
Audio controller . . . . . . . . . . . . . . ES1888 
ES690 wavetable music synthesizer, 
ES938 3D audio spatializer
Stereo conversion . . . . . . . . . . . . . 16 bit (analog-to-digital and digital-
to-analog)
FM music synthesizer. . . . . . . . . . 20-voice, 72-operator
Table 1-2.  Technical Specifications (Continued) 
						

							System Overview 1-9
Audio (Continued)
Interfaces:
Internal  . . . . . . . . . . . . . . . . . . ISA bus
External . . . . . . . . . . . . . . . . . . stereo line-in minijack
microphone-in minijack
headphones/speakers-out minijack
Speakers  . . . . . . . . . . . . . . . . . . . . four 8-ohm speakers
Internal speaker amplifier . . . . . . . 1 W into 8 ohms stereo
Headphones amplifier . . . . . . . . . . 150 mW into 32 ohms stereo
Controls. . . . . . . . . . . . . . . . . . . . . volume can be controlled through key 
combinations, software application 
menus, or the Speaker window in the Dell 
Control Center
Video
Video type . . . . . . . . . . . . . . . . . . . hardware-accelerated, 128-bit PCI
Video controller  . . . . . . . . . . . . . . NeoMagic 2090
Integrated video memory  . . . . . . . 1.1 MB
Display
Type. . . . . . . . . . . . . . . . . . . . . . . . active-matrix color (TFT)
Dimensions:
Height . . . . . . . . . . . . . . . . . . . 195.0 mm (7.68 inches)
Width. . . . . . . . . . . . . . . . . . . . 272.0 mm (10.7 inches)
Diagonal  . . . . . . . . . . . . . . . . . 307.5 mm (12.1 inches)
Maximum resolution . . . . . . . . . . . 800 x 600 pixels; 65,536 colors
Response time (typical)  . . . . . . . . 80 ms
Operating angle . . . . . . . . . . . . . . . 0° (closed) to 180°
Dot pitch . . . . . . . . . . . . . . . . . . . . 0.31 mm
Power consumption:
Panel (typical) . . . . . . . . . . . . . 0.69 W
Backlight . . . . . . . . . . . . . . . . . 2.10 W
Controls . . . . . . . . . . . . . . . . . . . . . brightness can be controlled through a key 
combination, the Display window in the 
Dell Control Center, or the System Setup 
program
Table 1-2.  Technical Specifications (Continued) 
						

							1-10 Dell Latitude XPi CD Service Manual
Keyboard
Number of keys  . . . . . . . . . . . . . . 85 (U.S., Canada, Korea, Thailand, and 
locations that use traditional Chinese); 
86 (Europe); 
87 (Japan)
Key travel . . . . . . . . . . . . . . . . . . . 3.0 ± 0.5 mm (0.12 ± 0.02 inch)
Key spacing  . . . . . . . . . . . . . . . . . 18.25 mm (0.72 inch)
Layout. . . . . . . . . . . . . . . . . . . . . . QWERTY, AZERTY, Kanji
Battery
Type  . . . . . . . . . . . . . . . . . . . . . . . lithium ion
Dimensions:
Height . . . . . . . . . . . . . . . . . . . 20.5 mm (0.81 inch) 
Depth  . . . . . . . . . . . . . . . . . . . 152.75 mm (6.01 inches)
Width  . . . . . . . . . . . . . . . . . . . 78.5 mm (3.09 inches)
Weight. . . . . . . . . . . . . . . . . . . . . . 0.41 kg (0.9 lb)
Voltage  . . . . . . . . . . . . . . . . . . . . . 14.4 VDC
Capacity  . . . . . . . . . . . . . . . . . . . . 36 WH
Charge time (approximate):
2
Computer on . . . . . . . . . . . . . . 2.5 hours
Computer off  . . . . . . . . . . . . . 1.5 hours
Operating time
 (approximate, with no 
power management features 
enabled)
2. . . . . . . . . . . . . . . . . . . .2 to 3.5 hours (without a CD-ROM drive 
in use)
Life span (approximate)2 . . . . . . .400 discharge/charge cycles
Temperature range:
Charge  . . . . . . . . . . . . . . . . . . 10° to 40°C (50° to 104°F)
Discharge  . . . . . . . . . . . . . . . . 10° to 40°C (50° to 104°F)
Storage  . . . . . . . . . . . . . . . . . . –40° to 65°C (–40° to 149°F)
2Battery performance features such as charge time, operating time, and life span can vary according 
to the conditions under which the computer and battery are used.
Table 1-2.  Technical Specifications (Continued) 
						

							System Overview 1-11
Battery (Continued)
NiCad reserve battery:
Voltage  . . . . . . . . . . . . . . . . . . 7.2 V
Operating time 
(approximate)  . . . . . . . . . . . . . 2 minutes (if computer is in battery swap 
mode); 40 days (if power is 
turned off) 
AC Adapter
Input voltage . . . . . . . . . . . . . . . . . 90 to 135 VAC and 164 to 264 VAC 
Input current (maximum)  . . . . . . . 1.2 A and 0.6 A
Input frequency . . . . . . . . . . . . . . . 47 to 63 Hz
Output current . . . . . . . . . . . . . . . . 4.5 A (maximum); 
3.5 A (continuous)
Rated output voltage . . . . . . . . . . . 18.5 VDC
Height . . . . . . . . . . . . . . . . . . . . . . 27.94 mm (1.1 inches)
Width. . . . . . . . . . . . . . . . . . . . . . . 58.42 mm (2.3 inches)
Depth. . . . . . . . . . . . . . . . . . . . . . . 133.35 mm (5.25 inches)
Weight (with cables)   . . . . . . . . . . 0.4 kg (0.89 lb)
Temperature range:
Operating  . . . . . . . . . . . . . . . . 0° to 40°C (32° to 104°F)
Storage  . . . . . . . . . . . . . . . . . . -40° to 70°C (-40° to 158°F)
CD-ROM Drive3 
Disc size  . . . . . . . . . . . . . . . . . . . . 8 cm and 12 cm (no adapter required)
Data transfer rate:
Sustained . . . . . . . . . . . . . . . . . 900 KB/sec (mode 2 disc)
Burst  . . . . . . . . . . . . . . . . . . . . 14.4 MB/sec (PIO mode 3)
Seek time:
Random . . . . . . . . . . . . . . . . . . 200 m/sec
Full-stroke . . . . . . . . . . . . . . . . 500 m/sec
3The CD-ROM drive in your computer may have different specifications.
Table 1-2.  Technical Specifications (Continued) 
						

							1-12 Dell Latitude XPi CD Service Manual
CD-ROM Drive3 (Continued) 
Access time:
Random  . . . . . . . . . . . . . . . . . 250 m/sec
Full-stroke  . . . . . . . . . . . . . . . 550 m/sec
Memory buffer . . . . . . . . . . . . . . . 128 KB
Physical (Computer)
Height . . . . . . . . . . . . . . . . . . . . . . 63.0 mm (2.48 inches)
Width  . . . . . . . . . . . . . . . . . . . . . . 280.9 mm (11.06 inches)
Depth  . . . . . . . . . . . . . . . . . . . . . . 233.5 mm (9.19 inches)
Weight (with battery and 
hard-disk drive)  . . . . . . . . . . . . . . 3.29 kg (7.26 lb)
Environmental
Temperature:
Operating  . . . . . . . . . . . . . . . . 10° to 40°C (50° to 104°F)
Storage  . . . . . . . . . . . . . . . . . . -40° to 65°C (-40° to 149°F)
Relative humidity (maximum):
Operating  . . . . . . . . . . . . . . . . 90% (noncondensing)
Storage  . . . . . . . . . . . . . . . . .  . 95% (noncondensing)
Maximum vibration:
Operating  . . . . . . . . . . . . . . . . 0.51 GRMS, using a random-vibration 
spectrum that simulates truck shipment
Storage  . . . . . . . . . . . . . . . . . . 1.1 GRMS, using a random-vibration 
spectrum that simulates air/truck 
shipment
3The CD-ROM drive in your computer may have different specifications.
Table 1-2.  Technical Specifications (Continued)