Dell Inspiron Cpi Service Guide

							System Overview 1-5
‡The system supports two low-battery warning codes:
The first low-battery warning occurs when the main battery has 15 minutes 
or less of charge remaining. The amber battery indicator blinks once per 
second. 
The second low-battery warning occurs when the main battery has 5 min-
utes or less of charge remaining. The amber battery indicator lights up 
without blinking. If no user activity occurs within 15 seconds, the system 
automatically enters suspend (or standby mode for Windows 98) or sus-
pend-to-disk.
‡Several error codes indicate temporary or fatal battery conditions. Refer to 
“Battery Failure Codes” in Chapter 3 for a listing of these codes.
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‡The keyboard controls the operation of the numbers lock (Num Lock) indi-
cator, the capitals lock (Caps Lock) indicator, and the Scroll Lock indicator, 
all of which are visible through openings at the top of the keyboard. These 
indicators are associated with the  key, the  key, 
and the  key, respectively; when lit, the LEDs indicate the 
active state of their respective keys. These indicators also blink to indicate 
error codes. Refer to “POST Error Codes” in Chapter 3 for a listing of these 
codes.
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Pressing the power button on the Latitude CP or CPi computer, C/Dock Expan-
sion Station, or the C/Port APR 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 (power indicator is off) and the display is open, press-
ing the power button initiates a boot operation.
‡If the computer is on (power indicator is on) and the display is open but off, 
pressing the power button causes the display to turn on.
‡If the computer is in suspend mode (or standby mode for Windows 98) 
(power indicator is off), pressing the power button turns on the computer. 
(A modem ring or system alarm event will also turn on the computer.)
‡Pressing the power button for 4 seconds causes the computer to power 
down.
‡If the computer is in suspend mode (or standby mode for Windows 98) 
(power indicator is off), the display is closed, and no external monitor is 
attached, pressing the power button on the Latitude C/Port APR or C/Dock 
Expansion Station has no effect on the power state. The computer remains 
in suspend mode (or standby mode for Windows 98).
‡If the computer is in suspend-to-disk mode and the display is open or an 
external monitor is connected, pressing the power button causes the com-
puter to initiate the resume-from-disk operation. 
						

							1-6 Dell Latitude CP and CPi Service Manual 
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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) or COM4
IRQ4 Available for use by a PC Card unless the built-in serial port or 
infrared port is configured for COM1 (the default) or COM3
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 Generated by the video controller
IRQ10 Available for use by a PC Card or audio controller unless the 
C/Port APR or C/Dock Expansion Station is attached
IRQ11 Generated by the USB and PC Card controllers; available for use 
by a PC Card
IRQ12 Generated by the keyboard controller to indicate that the output 
buffer of the integrated touch pad 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 it requires the 
attention of the microprocessor
IRQ15 Generated by the CD-ROM drive in the modular bay to indicate 
that the drive requires the attention of the microprocessor 
						

							System Overview 1-7
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Microprocessor:
Latitude CPi D300XT
Latitude CPi D266XT
Latitude CPi D233ST  . . . . . . . . Mobile Intel Pentium II microprocessor 
300, 266, or 233 MHz
Latitude CP M233XT
Latitude CP M233ST
Latitude CP M233SD
Latitude CP M166ST  . . . . . . . . Intel Pentium microprocessor with MMX 
technology 233 or 166 MHz
Bus architecture . . . . . . . . . . . . . . . PCI
Internal cache memory  . . . . . . . . .. 32 KB
External cache memor y:
Latitude CPi D300XT
Latitude CPi D266XT
Latitude CPi D233ST 
Latitude CP M233XT
Latitude CP M233ST
Latitude CP M233SD . . . . . . . . 512 KB pipelined-burst SRAM
Latitude CP M166ST  . . . . . . . . 256 KB pipelined-burst SRAM
Math coprocessor  . . . . . . . . . . . . . internal to the microprocessor
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System chip set:
Latitude CPi D300XT
Latitude CPi D266XT 
Latitude CPi D233ST  . . . . . . . .. Intel 440BX PCIset
Latitude CP M233XT
Latitude CP M233ST 
Latitude CP M233SD
Latitude CP M166ST  . . . . . . . ..  Intel Mobile 430TX PCIset
Microprocessor data bus width. . . .    64 bits
DRAM bus width . . . . . . . . . . . . . . 64 bits 
Address bus width . . . . . . . . . . . . . 32 bits
Security EEPROM . . . . . . . . . . . . . 256 bytes
Flash EPROM  . . . . . . . . . . . . . . . . 2 Mbits
Local bus . . . . . . . . . . . . . . . . . . . . 66 MHz
PCI bus  . . . . . . . . . . . . . . . . . . . . . 33 MHz 
						

							1-8 Dell Latitude CP and CPi Service Manual 
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PC Card controller . . . . . . . . . . . . . Texas Instruments PCI1131 CardBus 
controller
PC Card connectors . . . . . . . . . . . . two (supports type I and type II cards in 
any combination; supports type III cards 
only in the lower connector)
1
Cards supported  . . . . . . . . . . . . . . 3.3-V and  5-V cards
PC Card connector size . . . . . . . . . 68 pins
Data width (maximum):
PCMCIA . . . . . . . . . . . . . . . . . . 16 bits
CardBus . . . . . . . . . . . . . . . . . . 32 bits
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Memory module sockets . . . . . . . . two
Memory module type and 
capacities
2 . . . . . . . . . . . . . . . . . . .16-, 32-, and 64-MB 3.3-V EDO SODIMMs
Standard RAM . . . . . . . . . . . . . . . . one 16-MB memory module 
or one 32-MB memory module
Maximum RAM . . . . . . . . . . . . . . . 128 MB
Memory access time:
tRAC  . . . . . . . . . . . . . . . . . . . . 60 ns
tCAC  . . . . . . . . . . . . . . . . . . . . 15 ns
BIOS address. . . . . . . . . . . . . . . . . F000:0000–F000:FFFF
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Serial (DTE)  . . . . . . . . . . . . . . . . . . one 9-pin connector; 16550-compatible, 
16-byte buffer 
Parallel . . . . . . . . . . . . . . . . . . . . . . one 25-hole connector; unidirectional, 
bidirectional, or ECP
Video  . . . . . . . . . . . . . . . . . . . . . . . one 15-hole connector
PS/2 . . . . . . . . . . . . . . . . . . . . . . . . one 6-hole mini-DIN (does not support 
more than one device at a time)
1 On systems using the Microsoft Windows  95 or Windows 98 operating system, a zoom 
video card can be used only in the upper connector. The Microsoft Windows NT® 4.0 operat-
ing system does not support zoom video.
2The Latitude CP and CPi do not support memory modules from previous models of Dell por-
table computers, such as the Latitude XP, XPi, XPi CD, and LM.
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							System Overview 1-9
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Infrared  . . . . . . . . . . . . . . . . . . . . . one port compatible with IrDA 
Standards 1.1 (Fast IR) and 1.0 (Slow IR)
Audio . . . . . . . . . . . . . . . . . . . . . . . microphone-in;
line-in/audio-in;
headphones/speakers
Docking  . . . . . . . . . . . . . . . . . . . . . one 200-pin connector for Latitude C/Port 
APR or C/Dock Expansion Station
Universal Serial Bus . . . . . . . . . . . . one four-pin connector
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Audio controller . . . . . . . . . . . . . . . Crystal 4237B
Audio type . . . . . . . . . . . . . . . . . . . Sound Blaster Pro-compatible
voice and music functions
Stereo  . . . . . . . . . . . . . . . . . . . . . . 16 bit (analog-to-digital and 
digital-to-analog)
FM music synthesizer . . . . . . . . . . 20-voice, 72-operator
Interfaces:
Internal . . . . . . . . . . . . . . . . . . . ISA bus
External  . . . . . . . . . . . . . . . . . . stereo line-in/audio-in minijack;
microphone-in minijack;
headphones/speakers-out minijack
Speakers  . . . . . . . . . . . . . . . . . . . . two 8-ohm speakers
Speaker/headphones amplifier  . . . 1 W into 8 ohms stereo
Controls . . . . . . . . . . . . . . . . . . . . . volume can be controlled with key combi-
nations, software application menus, the 
Speaker window in the Dell Control Center, 
or the System Setup program
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Video type  . . . . . . . . . . . . . . . . . . . hardware-accelerated, 128-bit PCI
Video controller  . . . . . . . . . . . . . . . NeoMagic 2160
Integrated video memor y  . . . . . . . 2 MB 7DEOH  7HFKQLFDO 6SHFLILFDWLRQV
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							1-10 Dell Latitude CP and CPi Service Manual 
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Type . . . . . . . . . . . . . . . . . . . . . . . . active-matrix color (TFT)
Dimensions (active area):
Height  . . . . . . . . . . . . . . . . . . . 184.5 mm (7.26 inches)
Width . . . . . . . . . . . . . . . . . . . . 246.0 mm (9.68 inches)
Diagonal . . . . . . . . . . . . . . . . . . 307.5 mm (12.10 inches)
Maximum resolution/colors . . . . . . 800 x 600 pixels; 262,144 colors
Response time (typical) . . . . . . . . . 50 ms
Operating angle . . . . . . . . . . . . . . . 0° (closed) to 180°
Dot pitch  . . . . . . . . . . . . . . . . . . . . 0.31 mm
Power consumption: 
Panel (typical) . . . . . . . . . . . . . . 0.7 W
Backlight  . . . . . . . . . . . . . . . . . 1.6 or 2.4 W 
Controls . . . . . . . . . . . . . . . . . . . . . brightness can be controlled with key com-
binations, the Display window in the Dell 
Control Center, or the System Setup 
program
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Type . . . . . . . . . . . . . . . . . . . . . . . . active-matrix color (TFT)
Dimensions (active area):
Height  . . . . . . . . . . . . . . . . . . . 202.8 mm (7.98 inches)
Width . . . . . . . . . . . . . . . . . . . . 270.3 mm (10.64 inches)
Diagonal . . . . . . . . . . . . . . . . . . 337.8 mm (13.3 inches)
Maximum resolution/colors . . . . . . 1024 x 768 pixels; 262,144 colors
Response time (typical) . . . . . . . . . 50 ms
Operating angle . . . . . . . . . . . . . . . 0° (closed) to 180°
Dot pitch  . . . . . . . . . . . . . . . . . . . . 0.26 mm
Power consumption: 
Panel (typical) . . . . . . . . . . . . . . 1.7 W
Backlight  . . . . . . . . . . . . . . . . . 2.6 W 
Controls . . . . . . . . . . . . . . . . . . . . . brightness can be controlled with key com-
binations, the Display window in the Dell 
Control Center, or the System Setup 
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							System Overview 1-11
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Type . . . . . . . . . . . . . . . . . . . . . . .  HPHC dual-scan color (STN) 
Dimensions (active area):
Height  . . . . . . . . . . . . . . . . . . . 184.5 mm (7.26 inches)
Width . . . . . . . . . . . . . . . . . . . . 246.0 mm (9.68 inches)
Diagonal . . . . . . . . . . . . . . . . . . 307.5 mm (12.10 inches)
Maximum resolution/colors . . . . . . 800 x 600 pixels; 262,144 colors
Response time (typical) . . . . . . . . . 150 ms
Operating angle . . . . . . . . . . . . . . . 0° (closed) to 180°
Dot pitch  . . . . . . . . . . . . . . . . . . . . 0.31 mm
Power consumption: 
Panel (typical) . . . . . . . . . . . . . . 0.63 W
Backlight. . . . . . . . . . . . . . . . . . 3.2 W 
Controls . . . . . . . . . . . . . . . . . . . . . brightness and contrast can be controlled 
with key combinations, the Display win-
dow in the Dell Control Center, or the 
System Setup program
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Interface. . . . . . . . . . . . . . . . . . . . .. PS/2-compatible
X/Y position resolution 
(graphics table mode)  . . . . . . . . . . 20 points/mm (500 points/inch) 
Size:
Thickness . . . . . . . . . . . . . . . . . 2.5 mm (0.10 inch) at highest component
Width (sensor-active area) . . . . 61.8 mm (2.43 inches) at bottom;
58.6 mm (2.31 inches) at top
Height  . . . . . . . . . . . . . . . . . . . 48.8-mm (1.92-inches) rectangle
Weight . . . . . . . . . . . . . . . . . . . 8 g (0.28 oz) ± 0.5 g (0.02 oz)
Powe r :
Supply voltage . . . . . . . . . . . . . 5 V ± 10%
Supply current . . . . . . . . . . . . . 4 mA (maximum operating) 7DEOH  7HFKQLFDO 6SHFLILFDWLRQV
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							1-12 Dell Latitude CP and CPi Service Manual 
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Number of keys . . . . . . . . . . . . . . . 87 (U.S., Canada, Korea, Thailand, and 
locations that use traditional Chinese); 
88 (Europe); 
90 (Japan)
Key travel . . . . . . . . . . . . . . . . . . . . 3.0 mm + 0.5 mm/-0.2 mm 
(0.12 inch + 0.02 inch/-0.008 inch)
Key spacing . . . . . . . . . . . . . . . . . . 19.05 mm ± 0.3 mm 
(0.75 inch ± 0.012 inch)
Layout  . . . . . . . . . . . . . . . . . . . . . . QWERTY, AZERTY, Kanji
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Type   . . . . . . . . . . . . . . . . . . . . . . . smart lithium ion
Dimensions:
Height  . . . . . . . . . . . . . . . . . . ..  21.5 mm (0.83 inch) 
Depth . . . . . . . . . . . . . . . . . . . . 88.5 mm (3.48 inches)
Width . . . . . . . . . . . . . . . . . . . . 139.0 mm (5.47 inches)
Weight . . . . . . . . . . . . . . . . . . . . . . 0.4 kg (0.88 lb)
Voltage . . . . . . . . . . . . . . . . . . . . . . 16.8 VDC
Capacity . . . . . . . . . . . . . . . . . . . . . 43 WH
Charge time (approximate):
3
Computer on  . . . . . . . . . . . . . . 75 minute
Computer off or in suspend 
mode (or in standby mode for 
Windows 98) . . . . . . . . . . . . . . 1 hour
Life span (approximate)
3 . . . . . . . .500 discharge/charge cycles; 2000 partial 
discharge/charge cycles
Temperature range:
Charge . . . . . . . . . . . . . . . . . . . 0° to 40°C (32° to 104°F)
Storage  . . . . . . . . . . . . . . . . . . –20° to 60°C (–4° to 140°F)
3Battery performance features such as charge time and life span can vary according to the 
conditions under which the computer and battery are used.
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							System Overview 1-13
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Input voltage  . . . . . . . . . . . . . . . . . 90 to 135 VAC and 164 to 264 VAC
Input current (maximum) . . . . . . . . 3.5 A
Input frequency . . . . . . . . . . . . . . . 47 to 63 Hz
Output current . . . . . . . . . . . . . . . . 4.5 A (maximum at 4-sec pulse); 3.51 A 
(continuous)
Rated output voltage . . . . . . . . . . . 20.0 VDC
Height  . . . . . . . . . . . . . . . . . . . . . . 27.9 mm (1.09 inches)
Width . . . . . . . . . . . . . . . . . . . . . . . 58.4 mm (2.29 inches)
Depth . . . . . . . . . . . . . . . . . . . . . . . 133.3 mm (5.25 inches)
Weight (with cables)  . . . . . . . . . . . 0.4 kg (0.9 lb)
Temperature range:
Operating . . . . . . . . . . . . . . . . . 0° to 40°C (32° to 104°F)
Storage  . . . . . . . . . . . . . . . . . . –20° to 60°C (–4° to 140°F)
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 Height . . . . . . . . . . . . . . . . . . . . . . 38.6 mm (1.52 inches)
 Width  . . . . . . . . . . . . . . . . . . . . . . 306.0 mm (12.05 inches)
 Depth  . . . . . . . . . . . . . . . . . . . . . . 241.0 mm (9.49 inches)
 Weight
4. . . . . . . . . . . . . . . . . . . . .2.5 kg (5.6 lb)
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 Height . . . . . . . . . . . . . . . . . . . . . . 44.1 mm (1.74 inches)
 Width  . . . . . . . . . . . . . . . . . . . . . . 306.8 mm (12.08 inches)
 Depth  . . . . . . . . . . . . . . . . . . . . . . 241.0 mm (9.49 inches)
 Weight
5. . . . . . . . . . . . . . . . . . . . .2.8 kg (6.2 lb)
4Weight shown is with a hard-disk drive, a battery in the battery bay, a diskette drive in the 
modular bay, and one memory module. Your computer might weigh more or less, depending 
on its configuration.  
5Weight shown is with a hard-disk drive, a battery in the battery bay, a diskette drive in the 
modular bay, and one memory module. Your computer might weigh more or less, depending 
on its configuration. 
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							1-14 Dell Latitude CP and CPi Service Manual 
3K\VLFDO HOO /DWLWXGH &3 06
 Height . . . . . . . . . . . . . . . . . . . . . . 38.6 mm (1.52 inches)
 Width  . . . . . . . . . . . . . . . . . . . . . . 306.0 mm (12.05 inches)
 Depth  . . . . . . . . . . . . . . . . . . . . . . 241.0 mm (9.49 inches)
 Weight
6. . . . . . . . . . . . . . . . . . . . .2.6 kg (5.8 lb)
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Temperature:
Operating . . . . . . . . . . . . . . . . . 0° to 40°C (32° to 104°F)
Storage  . . . . . . . . . . . . . . . . . . –20° to 60°C (–4° to 140°F)
Relative humidity (maximum):
Operating . . . . . . . . . . . . . . . . . 10% to 90% (noncondensing)
Storage  . . . . . . . . . . . . . . . . . . 5% to 95% (noncondensing)
Maximum vibration:
Operating . . . . . . . . . . . . . . . . . 0.51 GRMS, using a random-vibration 
spectrum that simulates truck shipment
Storage  . . . . . . . . . . . . . . . . . . 1.3 GRMS, using a random-vibration spec-
trum that simulates air/truck shipment
Maximum shock:
7
Operating . . . . . . . . . . . . . . . . . 152.4 cm/sec (60 inches/sec) (less than or 
equal to a pulse width of 2 ms) 
Storage  . . . . . . . . . . . . . . . . . . 203.2 cm/sec (80 inches/sec)
(less than or equal to a pulse width of 2 ms)
Altitude (maximum):
Operating . . . . . . . . . . . . . . . . . –18 to 3048 m (-59 to 10,000 ft)
Storage  . . . . . . . . . . . . . . . . . . –18 to 10,600 m (-59 to 35,000 ft)
6Weight shown is with a hard-disk drive, a battery in the battery bay, a diskette drive in the 
modular bay, and one memory module. Your computer might weigh more or less, depending 
on its configuration. 
7Measured with the hard-disk drive in head-parked position.
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