Compal JHT01 Service Manual page 127

Contents
Chapter 6 Testing and Troubleshooting
1. PERFORM VISUAL INSPECTION ......................................................... 6-1
2. Troubleshooting Flowchart...................................................................... 6-1
3. Power Supply Troubleshooting ............................................................... 6-5
3.1 Procedure 1 Power Status Check ..................................................6-6
3.2 Procedure 2 Adaptor / battery replacement ...................................6-7
3.3 Procedure 3 Power supply connection check ................................6-7
3.4 Procedure 4 Diagnostic check .......................................................6-8
3.5 Procedure 5 Replacement check...................................................6-9
4. Display Troubleshooting ........................................................................6-10
4.1 Procedure 1 External display check.............................................6-11
4.2 Procedure 2 Diagnostic check .....................................................6-11
4.3 Procedure 3 Connector and replacement check..........................6-11
5. Keyboard Troubleshooting .....................................................................6-13
5.1 Procedure 1 External keyboard check .........................................6-14
5.2 Procedure 2 Diagnostic test.........................................................6-14
5.3 Procedure 3 Connector and replacement check..........................6-14
6. External USB Devices Troubleshooting .................................................6-15
6.1 Procedure 1 External device and connection check ....................6-16
6.2 Procedure 2 Replace system board.............................................6-16
7. CRT troubleshooting ..............................................................................6-17
7.1 Procedure 1 CRT connection check ............................................6-18
7.2 Procedure 2 CRT set check.........................................................6-18
8. HDMI troubleshooting ............................................................................6-19
8.1 Procedure 1 HDMI connection check ..........................................6-20
8.2 Procedure 2 HDMI set check.......................................................6-20
9. Touch Pad Troubleshooting ...................................................................6-21
9.1 Procedure 1 Touch Pad connection check...................................6-22
9.2 Procedure 2 Touch Pad replacement check ................................6-22
10. Speaker Troubleshooting .......................................................................6-23
10.1 Procedure 1 Audio source test.....................................................6-24
10.2 Procedure 2 Earphone test..........................................................6-24
10.3 Procedure 3 Connection check....................................................6-24
10.4 Procedure 4 Replacement Check ................................................6-24
11. CD-ROM/DVD Troubleshooting .............................................................6-25