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Compaq Presario CQ41-200 Compaq Presario CQ41 Notebook PC - Maintenance and S - Page 104

System DMA specifications

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Specifications System DMA specifications Hardware DMA0 DMA1 DMA2 DMA3 DMA4 DMA5 DMA6 DMA7 DMA System function Reserve Reserve Reserve Reserve Direct memory access controller Reserve Reserve Reserve System interrupt specifications (for models with discrete graphics subsystems) Hardware IRQ IRQ1 IRQ12 IRQ13 IRQ16 IRQ16 IRQ16 IRQ17 IRQ17 IRQ18 IRQ18 IRQ18 IRQ18 IRQ18 IRQ19 IRQ19 IRQ19 IRQ19 IRQ22 IRQ(-2) IRQ81-190 System function Standard PS/2 Keyboard PS/2 Compatible Mouse Numeric data processor High Definition Audio Controller Standard OpenHCD USB Host Controller Standard Opened USB Host Controller PCI standard PCI-to-PCI bridge Standard Enhanced PCI to USB Host Controller Broadcom 802.11g Network Adapter PCI standard PCI-to-PCI bridge PCI standard PCI-to-PCI bridge Standard OpenHCD USB Host Controller Standard OpenHCD USB Host Controller High Definition Audio Controller PCI standard PCI-to-PCI bridge Realtek RTL8102E/RTL8103E Family PCI-E Fast Ethernet NIC (NDIS 6.20) Standard Enhanced PCI to USB Host Controller Standard AHCI 1.0 Serial ATA Controller ATI Mobility Radeon HD 4330 Series Microsoft ACPI-Compliant System 6-6 Maintenance and Service Guide

Section	Page
Compaq Presario CQ41 Notebook PC	1
Contents	4
Product description	7
External component identification	11
Top components	11
TouchPad	11
Lights	12
Buttons and speakers	13
Keys	14
Display	15
Front components	16
Rear component	17
Right-side components	18
Left-side components	19
Bottom components	20
Wireless antennas	21
Additional hardware components	22
Illustrated parts catalog	23
Service tag	23
Computer major components	24
Display assembly	29
Plastics Kit	30
Mass storage devices	31
Miscellaneous parts	32
Sequential part number listing	33
Removal and replacement procedures	37
Preliminary replacement requirements	37
Tools required	37
Service considerations	37
Plastic parts	37
Cables and connectors	37
Drive handling	38
Grounding guidelines	38
Electrostatic discharge damage	38
Packaging and transporting guidelines	39
Workstation guidelines	39
Equipment guidelines	40
Component replacement procedures	41
Service tag	41
Computer feet	42
Battery	43
Hard drive	44
Memory module	46
RTC battery	48
WLAN module	50
Optical drive	56
Keyboard	57
Keyboard cover	59
Speaker assembly	61
Display assembly	63
Webcam/microphone module (select models only)	69
Microphone module	70
Top cover	71
Bluetooth module and cable (select models only)	74
Modem module	76
Audio board	78
USB board	80
Power connector and cable	82
System board	84
Heat sink/fan assembly or heat sink	88
Fan (for models with UMA graphics subsystems)	92
Processor	93
Setup Utility	95
Starting Setup Utility	95
Using Setup Utility	95
Changing the language of Setup Utility	95
Navigating and selecting in Setup Utility	96
Displaying system information	96
Restoring default settings in Setup Utility	96
Exiting Setup Utility	97
Setup Utility menus	97
Main menu	97
Security menu	97
System Configuration menu	98
Diagnostics menu	98
Specifications	99
Computer specifications	99
14.1-in display specifications	100
Hard drive specifications	101
Blu-ray ROM DVD±R/RW SuperMulti DL Drive with LightScribe specifications	102
DVD±RW SuperMulti DL Drive with LightScribe specifications	103
System DMA specifications	104
System interrupt specifications (for models with discrete graphics subsystems)	104
System interrupt specifications (for models with UMA graphics subsystems)	105
System I/O address specifications (for models with discrete graphics subsystems)	106
System I/O address specification (for models with UMA graphics subsystems)	108
Backup and recovery	110
Overview	110
Creating recovery discs	111
Backing up your information	112
Using Windows Backup and Restore	113
Using system restore points	113
Create restore points	113
To Create a system restore point	114
Restore to a previous date and time	114
Performing a recovery	114
Recovering from the recovery discs	115
Recovering from the dedicated recovery partition (select models only)	115
Connector pin assignments	116
Audio-in (microphone)	116
Audio-out (headphone)	116
External monitor	117
HDMI	118
RJ-11 (modem) (select models only)	119
RJ-45 (network)	120
Universal Serial Bus	121
Power cord set requirements	122
Requirements for all countries and regions	122
Requirements for specific countries and regions	123
Recycling	124
Battery	124
Display	124