Compaq Evo Notebook N400c Series Spezifikationen Seite 25
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2–4 Maintenance and Service Guide
Troubleshooting
2.2 No Power, Part 1
No Power
(Power LED is off)
1. Reseat power cables in docking station
and at the AC outlet.
2. Ensure the AC power source is active.
3. Ensure the power strip is working.
Done
Remove from
docking station
if applicable.
Power up
on battery
power?
Power up
on AC
power?
Power up
in docking
station?
Power up
on battery
power?
Power up
in docking
station?
Done
*Reset
power.
*Reset
power.
Power up
on AC
power?
N
Y
Y
N
N
Y
N
N
Y
Y
YN
1. On some models, there is a separate reset
button.
2. On some models, the computer may be
reset using the Standby switch and either
the lid switch or the main power switch.
*Notes:
Go to
Section 2.4,
No Power,
Part 3.
Go to
Section 2.3,
No Power,
Part 2.
Go to
Section 2.8,
Nonfunctioning
Docking Station.
- Maintenance and Service Guide 1
- Contents 3
- 3 Illustrated Parts Catalog 4
- 6 Specifications 5
- A Connector Pin Assignments 5
- B Power Cord Set Requirements 5
- C Screw Listing 5
- 1.1 Features 7
- 1.2 Clearing a Password 9
- 1.3 Power Management 10
- Product Description 11
- Table 1-1 12
- Table 1-2 14
- Table 1-3 16
- Keyboard Components 16
- Figure 1-5. Top Components 17
- Figure 1-6. Bottom Components 19
- Table 1-5 20
- Bottom Components 20
- 1.4 Design Overview 21
- Troubleshooting 22
- Troubleshooting Flowcharts 23
- Initial Troubleshooting 24
- 2.2 No Power, Part 1 25
- 2.3 No Power, Part 2 26
- 2.4 No Power, Part 3 27
- 2.5 No Power, Part 4 28
- 2.6 No Video, Part 1 29
- 2.7 No Video, Part 2 30
- (if applicable) 31
- DVD-ROM Drive 37
- 2.15 No Audio, Part 1 38
- 2.16 No Audio, Part 2 39
- 2.17 Nonfunctioning Device 40
- 2.18 Nonfunctioning Keyboard 41
- Illustrated Parts Catalog 44
- Table 3-1 46
- Components 49
- 3.4 Cable Kit Components 50
- 3.5 Miscellaneous Spare Parts 51
- Removal and Replacement 53
- Preliminaries 53
- 4.2 Service Considerations 54
- 4.3 Preventing Damage to 55
- Removable Drives 55
- Precautions 56
- 4.6 Workstation Precautions 57
- Procedures 60
- 5.1 Serial Number 61
- Table 5-1 62
- Disassembly Sequence Chart 62
- Disassembly 63
- 5.4 Computer Feet 64
- 5.5 Modem/NIC 65
- 5.6 LED Cover 68
- 5.7 Microphone 69
- 5.8 Keyboard 70
- 5.9 LED Board 71
- 5.10 Display 74
- 5.11 Top Cover 77
- 5.12 RTC Battery 81
- 5.13 System Board 83
- 2. Disconnect the left 84
- and right 84
- external battery terminal 84
- (Figure 5-16) 84
- 5.14 Charger Board 86
- 5.15 Modem/NIC Cable 88
- 5.16 Audio Cable 90
- Specifications 92
- Table 6-2 94
- 10.4-inch XGA, TFT Display 94
- Table 6-3 95
- Hard Drives 95
- Table 6-4 97
- Battery Packs 97
- Table 6-5 98
- AC Adapter 98
- Table 6-6 98
- System DMA 98
- Table 6-7 99
- System Interrupts 99
- Table 6-8 100
- System I/O Addresses 100
- (Continued) 101
- Table 6-9 103
- System Memory Map 103
- Connector Pin Assignments 104
- Microphone 105
- Table A-3 105
- Universal Serial Bus 105
- Table A-2 105
- Table A-4 106
- RJ-45 Network Interface 106
- Table A-5 106
- RJ-11 Modem 106
- Table A-6 107
- External Monitor 107
- Power Cord Set Requirements 108
- Country-Specific Requirements 109
- Screw Listing 111
- Table C-1 112
- Phillips PO M2 × 10 Screw 112
- Table C-2 113
- Torx T8 M2.5 × 5 Screw 113
- Table C-3 114
- Phillips P0 M2 × 4 Screw 114
- Table C-4 115
- Torx T8 M2 × 4 Screw 115
- (Continued) 116
- Table C-5 117
- Torx T8 M2 × 15 Screw 117
- Table C-6 118
- Torx T8 M2 × 5 Screw 118
- Table C-7 119
- Torx T8 M2 × 8 Screw 119
- Table C-8 121
- 5.0 mm × 9.5 Screwlock 121
- Table C-9 122
- Table C-10 123
- Phillips P0 M1.5 × 6 Screw 123
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