Toshiba QOSMIO G20

2 Troubleshooting Procedures 2.9 Display Troubleshooting

Procedure 3 Connector and Cable Check

LCD Module is connected to system board by an LCD/FL cable. FL inverter board is also

connected to system board by an LCD/FL cable. In addition, fluorescent lamp is connected to

FL inverter board by HV cable. Their cables may be disconnected from system board or FL

inverter board. Disassemble the computer following the steps described in Chapter 4,

Replacement Procedures.

If the connection is loose, reconnect firmly and restart the computer. If the problem still

occurs, go to Procedure 4.

CN3 CN1

CN5000

LCD/FL cable

HV cable

CN2CN4

Fluorescent lamp

QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL]

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Contents

Main Toshiba Personal Computer QOSMIO G20 Maintenance Manual TOSHIBA CORPORATION Page Preface Page Page Table of Contents Page Page Page Page Page Page Chapter 1 Contents Page 1.1 Features Page Page Page Page Page Page Page Page 1.3 2.5-inch Hard Disk Drive 1 Hardware Overview 1.3 2.5-inch Hard Disk Drive Table 1-2 2.5-inch HDD Specifications 1.4 Optical Drive 1.5 Keyboard 1.6 TFT Color Display Page 1.7 Power Supply 1.7 Power Supply 1 Hardware Overview Table 1-7 Power supply output rating (1/2) Name 1 Hardware Overview 1.7 Power Supply Table 1-11 Power supply output rating (2/2) Name 1.8 Batteries Page Page 1.9 AC Adapter Page Page Page Chapter 2 Contents Page Page Page 2.1 Troubleshooting Page Page Page Page Page 2.3 Power Supply Troubleshooting Page Page Page Page Page 2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting E3V output PPV output PGV output PTV output Page Page Page 2.4 System Board Troubleshooting Page Page Page Page Page Page Page Page Page Page 2-28 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) Suspend mode QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 2-29 LED Status Test item Contents 2-30 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) Suspend process for boot mode QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 2-31 LED Status Test item Contents Resume 2-32 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) LED Status Test item Contents QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 2-33 LED status Test item Contents 2-34 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) LED status Test item Contents QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 2-35 NOTE: Status outputted by the test means the last error detected in the debug port test. Page 2.5 USB FDD Troubleshooting Page Page Page 2.6 2.5 HDD Troubleshooting Page Page Page Page 2.7 Keyboard Troubleshooting Page 2.8 Touch pad Troubleshooting Page 2.9 Display Troubleshooting Page Page 2.10 Optical Disk Drive Troubleshooting Page 2.11 Modem Troubleshooting Page 2.12 LAN Troubleshooting 2.13 Wireless LAN Troubleshooting Page Page 2.14 Bluetooth Troubleshooting Page Page 2.15 Sound Troubleshooting Page 2.16 TV tuner Troubleshooting 2.17 Bridge media Slot Troubleshooting 2.18 PCI ExpressCard Slot Troubleshooting Page Page Chapter 3 Contents Page Page Page 3.1 The Diagnostic Test Page Page 3.2 Executing the Diagnostic Test Page Page Page 3.3 Check of the RAID configuration 3 Tests and Diagnostics 3.3 Check of the RAID configuration Following screen is displayed for checking the RAID configuration and specifying a failed drive. 3.3.1 Explanation of the screen display Contents of the screen display are shown below. Page Page 3 Tests and Diagnostics 3.3 Check of the RAID configuration Page Page Page Page 3.4 Setting of the hardware configuration Page Page 3.5 Heatrun Test 3.6 Subtest Names 3 Tests and Diagnostics 3.6 Subtest Names 3-20 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) 3 Tests and Diagnostics 3.6 Subtest Names Table 3-1 Subtest names (2/2) QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 3-21 3.7 System Test Page 3.8 Memory Test 3.9 Keyboard Test 3.10 Display Test Page Page 3.11 Floppy Disk Test Page 3.12 Printer Test Page 3.13 Async Test 3.14 Hard Disk Test Page Page 3.15 Real Timer Test Page 3.16 NDP Test 3.17 Expansion Test Page 3.18 CD-ROM/DVD-ROM Test 3 Tests and Diagnostics 3.19 Error Code and Error Status Names 3.19 Error Code and Error Status Names QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 3-43 3-44 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 3-45 3.20 Hard Disk Test Detail Status 3 Tests and Diagnostics 3.20 Hard Disk Test Detail Status Tables 3-4 Error register contents QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 3-47 3.21 ONLY ONE TEST Page Page Page Page Page Page Page Page Page 3.22 Head Cleaning 3.23 Log Utilities Page 3.24 Running Test 3.25 Floppy Disk Drive Utilities Page Page Page Page 3.26 System Configuration Page 3.27 Wireless LAN Test Program (Intel-made b/g) Page Page Page 3.28 Wireless LAN Test Program (Intel-made a/b/g) Page Page Page Page 3.29 Wireless LAN Test Program (Askey-made) Page Page Page 3.30 LAN/Modem/Bluetooth/IEEE1394 Test Program Page Page Page Page Page Table 3-5 Error message 3-88 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) QOSMIO G20 Maintenance Manual (960-511) Page QOSMIO G20 Maintenance Manual (960-511) 3-92 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) QOSMIO G20 Maintenance Manual (960-511) 3-94 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) Page 3.31 Sound Test program Page Page Page Page Page 3.32 SETUP Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Chapter 4 Contents Page Page Page 4.1 Overview Page Page Page Page Page Page 4.2 Battery pack Page 4.3 ExpressCard & PC card / Bridge media Page Page 4.4 HDD Page Page Page 4.5 MDC Page 4.6 Memory module Page 4.7 Keyboard Page Page 4.8 Bottom cover assembly Page Page Page Page 4.9 LAN jack 4.10 Speaker (L) & Modem jack Page 4.11 AV-IN board 4.12 Battery latch assembly Page 4.13 Optical disk drive Page Page Page 4.14 SJ board / Internal Microphone Page Page 4.15 Sound board Page 4.16 Power SW board Page 4.17 Battery board / RTC battery Page Page 4.18 Wireless LAN card 4.19 TV tuner module Page 4.20 CPU fan 4.21 CPU fin & CPU Page Page 4.22 VGA fan & VGA fin Page 4.23 GMCH heat sink 4.24 Speaker (R) 4.25 TV antenna board 4.26 System board Page 4.27 PC card slot Page 4.28 Bluetooth module Page 4.29 Volume sensor board 4.30 Touch sensor board Page 4.31 Touch pad Page 4.32 Latch assembly Page 4.33 LCD unit / FL inverter Page Page Page Page 4.34 LCD harness Page Page 4.35 Wireless antennas Page Page 4.36 Display latch hook 4.37 Display rear cover 4.38 Hinge Page Page Page Appendix Contents Page Page Page Page Page Page Page Page Appendix A Handling the LCD Module Precautions for handling the LCD module Page Page Page Page Page Appendix B Board Layout B.1 System Board Front View Page B.2 System Board Back View B.3 BT board B.4 SD board Page B.5 SJ board B.6 AV-IN board B.7 Power SW board B.8 ODD relay board B.9 TV antenna board Page QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] C-1 Appendix C Pin Assignment System Board (FNN2S*) C.1 CN1410 Memory Connector 0 (200-pin) Table C-1 Memory connector 0 (200-pin) (1/3) C.1 CN1410 Memory Connector 0 (200-pin) Appendix C Pin Assignment C-2 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) Table C-1 Memory connector 0 (200-pin) (2/3) Appendix C Pin Assignment C.1 CN1410 Memory Connector 0 (200-pin) QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] C-3 Table C-1 Memory connector 0 (200-pin) (3/3) C.2 CN1400 Memory connector 1 (200-pin) Appendix C Pin Assignment C-4 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) C.2 CN1400 Memory connector 1 (200-pin) Table C-2 Memory connector 1 (200-pin) (1/3) Appendix C Pin Assignment C.2 CN1400 Memory connector 1 (200-pin) QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] C-5 Table C-2 Memory connector 1 (200-pin) (2/3) C.2 CN1400 Memory connector 1 (200-pin) Appendix C Pin Assignment C-6 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511) Table C-2 Memory connector 1 (200-pin) (3/3) Appendix C Pin Assignment C.3 CN1850 1st HDD I/F connector (22-pin) C.3 CN1850 1st HDD I/F connector (22-pin) Table C-3 1st HDD I/F connector (22-pin) C.4 CN1860 2nd HDD I/F connector (22-pin) Table C-4 2nd HDD I/F connector (22-pin) C.5 CN2100 PC card I/F connector (150-pin) Table C-5 PC card I/F connector (150-pin) (1/3) Appendix C Pin Assignment C.5 CN2100 PC card I/F connector (150-pin) Table C-5 PC card I/F connector (150-pin) (2/3) C.5 CN2100 PC card I/F connector (150-pin) Appendix C Pin Assignment Table C-5 PC card I/F connector (150-pin) (3/3) Appendix C Pin Assignment C.6 CN3200 Keyboard I/F connector (34-pin) C.6 CN3200 Keyboard I/F connector (34-pin) Table C-6 Keyboard I/F connector (34-pin) C.7 CN3201 Touch pad I/F connector (4-pin) Table C-7 Touch pad I/F connector (4-pin) C.8 CN8770 CPU FAN connector (3-pin) C.9 CN8780 VGA FAN connector (3-pin) C.10 CN4610 USB I/F connector Port 0/Port 2 (8-pin) C.11 CN4611 USB I/F connector Port 1 (8-pin) Appendix C Pin Assignment C.12 CN8800 DC IN connector (4-pin) C.12 CN8800 DC IN connector (4-pin) Table C-12 DC IN connector (4-pin) C.13 IS2101 MEDIA BRIDGE I/F connector (42-pin) C.14 CN2200 Wireless LAN card I/F connector (124-pin) Table C-14 Wireless LAN card I/F connector (124-pin) (1/2) Appendix C Pin Assignment C.14 CN2200 Wireless LAN card I/F connector (124-pin) Table C-14 Wireless LAN card connector (124-pin) (2/2) C.15 CN2220 WW Tuner I/F connector (124-pin) Appendix C Pin Assignment C.15 CN2220 WW Tuner I/F connector (124-pin) Table C-15 WW Tuner I/F connector (124-pin) (1/2) Appendix C Pin Assignment C.15 CN2220 WW Tuner I/F connector (124-pin) Table C-15 WW Tuner I/F connector (124-pin) (2/2) C.16 CN4100 Network I/F connector (14-pin) C.17 CN4200 1394 I/F connector (4-pin) Appendix C Pin Assignment C.18 CN5000 LCD I/F connector (41-pin) C.18 CN5000 LCD I/F connector (41-pin) Table C-18 LCD I/F connector (41-pin) C.19 CN5080 CRT I/F connector (15-pin) C.20 CN5501 S-video out I/F connector (4-pin) C.21 CN5502 D-video I/F connector (14-pin) Page C.26 CN4400 Bluetooth I/F connector (20-pin) C.27 CN5661 TV tuner I/F connector (12-pin) C.28 CN5800 SVP Host I/F connector (2-pin) C.29 CN8020 Battery (Power) I/F connector (6-pin) C.30 CN8811 Battery (Signal) I/F connector (15-pin) C.31 CN1810 ODD relay board (FNN2D*) I/F connector (50-pin) Appendix C Pin Assignment C.31 CN1810 ODD relay board (FNN2D*) I/F connector (50-pin) Table C-31 ODD relay board (FNN2D*) I/F connector (50-pin) Appendix C Pin Assignment C.32 CN9500 Sound board (FNN2N*) I/F connector (57- pin) C.32 CN9500 Sound board (FNN2N*) I/F connector (57-pin) Table C-32 Sound board (FNN2N*) I/F connector (57-pin) C.33 CN5660 AV-IN board (FNN2V*) I/F connector (10-pin) Appendix C Pin Assignment C.34 CN1820 CD-ROM I/F connector (50-pin) ODD relay board (FNN2D*) C.34 CN1820 CD-ROM I/F connector (50-pin) Table C-34 CD-ROM I/F connector (50-pin) C.35 CN9680 System board I/F connector (50-pin) Appendix C Pin Assignment C.35 CN9680 System board I/F connector (50-pin) Table C-35 System board I/F connector (50-pin) Appendix C Pin Assignment C.36 CN3000 MDC I/F connector (30-pin) Sound board (FNN2N*) C.36 CN3000 MDC I/F connector (30-pin) Table C-36 MDC I/F connector (30-pin) C.37 CN6002 Speaker (Left) connector (3-pin) C.38 CN9510 System board I/F connector (57-pin) Table C-38 System board I/F connector (57-pin) C.39 CN9520 Sound jack board I/F connector (20-pin) C.40 CN9521 Power switch board (FNN2P*) I/F connector (4-pin) Page Page Page Appendix C Pin Assignment C.50 J6001 External microphone I/F connector (6-pin) C.50 J6001 External microphone I/F connector (6-pin) Table C-50 External microphone I/F connector (6-pin) C.51 DS6000 Headphone/SPDIF connector (10-pin) Table C-51 Headphone/SPDIF connector (10-pin) Page Page Page Appendix D Display Codes D.1 Display Codes Table D-1 Scan codes (set 1 and set 2) (1/4) D.1 Display Codes Appendix. D Display codes Table D-1 Scan codes (set 1 and set 2) (2/4) Appendix. D Display codes D.1 Display Codes Table D-1 Scan codes (set 1 and set 2) (3/4) Page Page D.1 Display Codes Appendix. D Display codes Table D-3 Scan codes in Numlock mode Table D-4 Scan codes with Fn key Appendix. D Display codes D.1 Display Codes Table D-5 Scan codes in overlay mode Table D-6 No.124 key scan code Page Appendix E Key Layout Page Appendix F Wiring Diagrams F.1 RGB Monitor ID Wraparound connector Figure F-1 RGB Monitor ID Wraparound connector (15PIN to 15PIN) F.2 LAN loopback Connector Page Appendix G BIOS Rewrite Procedures Page Appendix H EC/KBC Rewrite Procedures Page Page Page Appendix J Maintenance of TOSHIBA RAID J.1 Outline of Maintenance (Repair) of TOSHIBA RAID J.2 Analysis and handling by Drive Log Page Page List of Command (1/2) QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] J-5 Page Page J.3 Operation of Independent utility Page Displayed item in Logical Drive J-10 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511)