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HP Compaq NC4400 Maintenance And Service Guide
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5–64
Maintenance and Serv
ice Gui
d
e
Re
mo
val and R
eplacement Pr
ocedures
2.
Disconnect the Bluetooth module cable
1
from the system
board and remov
e the cable.
3.
Remov
e the four T
orx8 T8M2.0×5.0 screws
2
that secure the
system board to the computer
.
R
emo
ving the S
ys
tem Boar
d Scr
e
ws
, P
art 1
145
147
Table of Contents
Table of Contents
3
Default Chapter
6
Specifications
6
1 Product Description
7
Features
8
Resetting the Computer
10
Power Management
11
External Components
12
Right-Side Components
15
Left-Side Components
16
Rear Panel Components
19
Top Components
23
Bottom Components
25
Design Overview
26
2 Troubleshooting
27
Computer Setup
27
Using Computer Setup
27
Selecting from the File Menu
28
Selecting from the Security Menu
29
Selecting from the Diagnostics Menu
30
Selecting from the System Configuration Menu
31
Troubleshooting Flowcharts
32
Flowchart 2.1—Initial Troubleshooting
33
Flowchart 2.2—No Power, Part
34
Flowchart 2.3—No Power, Part
35
Flowchart 2.4—No Power, Part
36
Flowchart 2.5—No Power, Part
37
Flowchart 2.6—No Video, Part
38
Flowchart 2.7—No Video, Part
39
Flowchart 2.9—No Operating System (Os) Loading
41
Flowchart 2.13—No os Loading, Diskette Drive
45
Flowchart 2.14—No os Loading, Optical Drive
46
Flowchart 2.15—No Audio, Part
47
Flowchart 2.16—No Audio, Part
48
Flowchart 2.17—Nonfunctioning Device
49
Flowchart 2.18—Nonfunctioning Keyboard
50
3 Illustrated Parts Catalog
53
Serial Number Location
53
Computer Major Components
54
Display Assembly Components
62
Display Assembly Components
63
Plastics Kit
64
Cable Kit
65
Miscellaneous (Not Illustrated)
66
Sequential Part Number Listing
68
Sequential Part Number Listing
69
4 Removal and Replacement Preliminaries
75
Tools Required
75
Service Considerations
76
Plastic Parts
76
Cables and Connectors
76
Preventing Damage to Removable Drives
77
Preventing Electrostatic Damage
78
Packaging and Transporting Precautions
79
Workstation Precautions
80
Grounding Equipment and Methods
81
Typical Electrostatic Voltage Levels
82
5 Removal and Replacement Procedures
83
Serial Number
84
Disassembly Sequence Chart
85
Disassembly Sequence Chart (Continued)
86
Preparing the Computer for Disassembly
87
Hard Drive
89
Computer Feet
93
Bluetooth Module
94
External Memory Module
96
Keyboard Cover
99
Keyboard
102
Fan
106
Heat Sink
107
Processor
110
Internal Memory Module
112
Mini Card WLAN Module
114
Display Assembly
116
Display Bezel
122
Fingerprint Reader Board
124
Microphone
125
Display Assembly Subcomponents
125
Display Inverter
126
Button Board
130
Top Cover
133
Touchpad
137
Speaker
141
Infrared Board
143
System Board
145
Modem Module
150
RTC Battery
152
Hard Drives
157
System Dma
159
System Interrupts
160
System Memory Map
165
Screw Listing
166
Safeguarding Your Data
190
Backing up the System
191
Backing up Specific Files or Folders
191
Backing up the Entire Hard Drive
192
Scheduling Backups
194
Creating Recovery Discs
195
Performing a Recovery
196
Performing a Recovery from the Recovery Discs
196
Performing a Recovery from the Hard Drive
197
Initiating a Recovery in Windows
197
Recovery Partition
197
Connector Pin Assignments
212
Universal Serial Bus
213
External Monitor
215
Power Cord Set Requirements
218
Conductor Power Cord Set
218
General Requirements
219
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5
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HP Compaq NC4400 Specifications
General
Brand
HP
Model
Compaq NC4400
Category
Laptop
Language
English
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