Manuals
/
Brands
/
Computer Equipment
/
Laptop
/
Toshiba
/
Computer Equipment
/
Laptop
Toshiba
NB255
- page 215
1
215
222
222
Download
222 pages, 7.76 Mb
25. Y
ugoslavian (YU) K
e
yboard
Figur e YU
keyboar d
26. Nor
w
egian (NW) K
eyboard
Figur
e NW keyboar
d
NB250/NB2
55 Series Mai
ntenance M
anual
Contents
Main
Toshiba Personal Computer NB250/NB255 Maintenance Manual
TOSHIBA CORPORATION
Page
Preface
Page
Page
Table of Contents
Page
Page
Page
Page
Page
Page
Chapter 1 Contents
Page
Page
1.1 Features
Page
Page
Page
1.1 Features 1 Hardware Overview
Compal Electronics, Inc.
NB250/NB255 Maintenance Manual 1-5
KAVAA LA-5121P M/B
Block Diagrams
Page
Page
1.2 2.5-inch HDD
1.3 Power Supply
Page
1.4 Batteries
Page
Page
Page
Chapter 2 Contents
Page
2.1 Troubleshooting Introduction
2.2 Troubleshooting Flowchart
Page
2 Troubleshooting Procedures
A
Figure 2-1 Troubleshooting flowchart (1/2)
2 Troubleshooting Procedures
A
Figure 2-1 Troubleshooting flowchart (2/2)
Page
Page
2 Troubleshooting Procedures
2.3 Power Supply Troubleshooting
END
Page
Page
AC adaptor System board Battery
A C adaptor cord AC power cord
Page
2 Troubleshooting Procedures
2.4 Display Troubleshooting
Figure 2-3 Display troubleshooting process
Page
Page
2 Troubleshooting Procedures
2.5 Keyboard Troubleshooting
Figure 2-4 Keyboard troubleshooting process
Page
2.5 External USB Devices Troubleshooting
Page
2.6 TouchPad Troubleshooting
Page
232 Troubleshooting Procedures
NB200 Series Maintenance Manual
2.7 Speaker Troubleshooting
Figure 2-7 Speaker troubleshooting process
Page
2.6 Wireless LAN Troubleshooting
Page
2.7 Camera Troubleshooting
Page
2.8 Bluetooth Troubleshooting
Page
2.9 2in1 card Troubleshooting
Page
2.10 HDD/SSD Troubleshooting
Page
Page
2.13 CRT Troubleshooting
Page
2.14 LAN Troubleshooting
Page
Page
2.16 3D Sensor Troubleshooting
Page
Page
2. 17 3G Troubleshooting
Page
Page
Page
3.1 The Diagnostic Test
3.2 Executing the Diagnostic Test
Page
Page
Page
3.3 Display Configuration
Page
Page
3.6 Main Battery Charge Test
3. 7 FDD Test
Page
Page
Page
Page
3.10 Mouse (Pad) Test
3.11 LCD Pixels Mode Test
3.12 Magnetic Switch Test
Page
3.13 LAN Test
Page
Page
3.14 RTC Test
3.15 3D G-sensor test
Page
Page
3.16 1st HDD Test
Page
3.17 Read DMI
3.18 Write DMI
Page
3.19 Toshiba Logo set
Page
Page
Page
Page
3.21 TP TYPE R/W TEST
Page
Page
3.22 EEPROM Setting
Page
Page
Page
Page
Page
Page
Chapter 4 Contents
Page
Page
Page
Page
4.1 General
Page
Page
Page
Page
Page
Page
4.2 Battery
Page
4.3 HDD
Page
Page
4.4 Memory
Page
4.5 WLAN Card
Page
4.6 Hinge Cover and Keyboard
Page
Page
Page
4.7 Power Board
Page
4.8 Logic Upper Assembly
Page
Page
Page
Page
Page
4.9 Speaker
4.10 Touch Pad
4.11 Motherboard
Page
Page
Page
Page
4.12 Thermal Fan Module
Page
4.13 LCD Bezel Assembly
Page
Page
4.14 LCD Module
Page
Page
4.15 Camera module LVDS cable
Page
Page
Appendix A Handling the LCD Module
Precautions for handling the LCD module
Page
Page
Page
Page
Appendix B Board Layout
B.1 System Board Top View
B.2 System Board Bottom View
Page
Page
Appendix C Pin Assignments
Page
C.5 JWLAN
Table C-5 WLAN/WiMax Connector pin assignments (52-pin)
C.6 JLAN
C.7 JDDR1
Table C-7 SODIMM I/F pin assignments (204-PIN) (2/4)
Table C-7 SODIMM I/F pin assignments (204-PIN) (3/4)
Page
C.8 JMIC
C.9 JLINE
C.10 JKB
C.11 JUSBA
C.12 JUSBB
C.13 JUSBC
C.14 JPOWER
C.15 JCARD
C.16 JEXMIC
C.17 JSPKR
C.18 JT OUCH
Appendix D Keyboard Scan/Character Codes
Table D-1 Scan codes (set 1 and set 2) (1/4)
Table D-1 Scan codes (set 1 and set 2) (2/4)
Table D-1 Scan codes (set 1 and set 2) (3/4)
Page
Page
Table D-3 Scan codes in Numlock mode
Table D-4 Scan codes with Fn key
Note: 8. * Refer to Table D-7, No. 126 key scan code.
Table D-5 Scan codes in overlay mode
Table D-6 No.124 key scan code
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
NB250/NB255 Series Maintenance Ma nual
F-1
Appendix F Series Screw Torque List (PAV10)
Table F-1 Series Screw Torque List
SCREW P/N SCREW SPEC Q'ty LOCATION SCREW TORQUE
Page
Appendix G Reliability
