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Product System (PS)

Subject:

C4-425 Trouble Shooting Guide

Part No.:

99.K4501.000

Rev.: 0

Doc. No.

99.K4501.000-C4-425-001

Project Code:

99.K4501.001

Component Part.

No.:

Page 1 of 35

Model Name:

DHS5

Form No: BQY0-0B-003-32(031205)

JoybookS52 Trouble Shooting Guide

Summary of content (35 pages)

PAGE 1
Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 1 of 35 No.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: Project Code: 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 2 of 35 No.: Model Name: DHS5 Contents 1.1 Outline...........................................................................................................................5 1.2 Basic Flowchart............................................................................................................5 1.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: Project Code: 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 3 of 35 No.: Model Name: DHS5 Procedure 3 Connector Check and Replacement Check.....................................26 1.9 CD_ROM Drive ......................................................................................................28 Procedure 1 CD_ROM Cleaning Check .........................................
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 4 of 35 No.: Model Name: DHS5 Figures Figure 1-1 Basic flowchart (1/2) .........................................................................................7 Figure 1-2 Basic flowchart (2/2) .........................................................................................
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 5 of 35 No.: Model Name: DHS5 1.1 Outline This chapter describes the fault diagnosis procedures for field replaceable units (FRUs) in the computer. The FRUs covered here are as follows: 1. System board 2. 2.5-inch HDD 3. Keyboard 4. Display 5. DVD-ROM drive 6. CD_ROM drive 7. Cooling module 8. Touch Pad 10. Audio 11.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: Project Code: 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 6 of 35 No.: Model Name: DHS5 Before going through the diagnostic flowchart steps, verify the following: Ask the user if a password has been registered and, if so, ask him or her to enter the password.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 7 of 35 No.: Model Name: DHS5 Start Connect the AC Adapter Insert Bootable CD into CD-ROM Turn the Power on and boot from CD NO Follow the power supply diagnostic procedure in section2.3 NO Follow the power supply diagnostic procedure in section2.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: Project Code: 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 8 of 35 No.: Model Name: DHS5 1 Diagnostic Program loaded?? NO Follow the CD-ROM diagnostic Procedures in section 2.9 YES Perform each test with diagnostic program.
PAGE 9
Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 9 of 35 No.: Model Name: DHS5 If the diagnostic program cannot detect an error, the error may be intermittent. Run the continuous test program repeatedly to isolate the problem.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: Project Code: 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 10 of 35 No.: Model Name: DHS5 1.3 Power Supply The power supply in the computer controls many functions and components. To check if the power supply is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: Project Code: 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 11 of 35 No.: Model Name: DHS5 POWER LED Power LED Power supply status On in blue System fully on On in orange System in suspend Off System in power off If power LED is on in blue, but nothing appear on screen. Please refer to section 2.4 System Board and section 2.7 Display for troubleshooting.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 12 of 35 No.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 13 of 35 No.: Model Name: DHS5 1.4 System Board To check if the system board is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 14 of 35 No.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 15 of 35 No.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: 99.K4501.001 Project Code: Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 16 of 35 No.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: 99.K4501.001 Project Code: Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 17 of 35 No.: DHS5 Model Name: Procedure 2 Port 80 Check (in Resume Mode) The 7 segments LED displays the POST status and error status by turning lights on and off as a hexadecimal value obtained in the resume or suspend mode after the system unit is switched on.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 18 of 35 No.: Model Name: DHS5 Procedure 3 Test Program Check The maintenance test program contains several programs for diagnosing the system board and CPU. Execute the following test programs using the procedures described in Diagnostic user guide. 1. System test 1. Memory test 2. Keyboard test 3. Display test 4.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 19 of 35 No.: Model Name: DHS5 1.5 2.5-inch HDD To check if the 2.5-inch HDD is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 20 of 35 No.: Model Name: DHS5 Procedure 2 Partition Check Enter the MS-DOS system. Perform the following checks: Check 1 Type C: and press the Enter key. If you cannot change to drive C, perform Check 2. you can change to drive C, perform Check 3. Check 2 Type FDISK and press the Enter key.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 21 of 35 No.: Model Name: DHS5 If an error message appears on the display, refer to the MS-DOS Manual for more information and perform Check 2. Check 2 Run the test program to format the 2.5-inch HDD with a low-level format option. See Diagnostic user guide for details on how to use the test program.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 22 of 35 No.: Model Name: DHS5 Tear Down guide and perform the following checks: Check 1 Make sure the following connectors have been firmly connected to the HDD, system board and CPU. HDD System board CPU If any connector is loose or off, reconnect it firmly and return to Procedure 1.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 23 of 35 No.: Model Name: DHS5 1.6 Keyboard To check if the computer’s keyboard is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 24 of 35 No.: Model Name: DHS5 1.7 Display To check if the computer’s display is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 25 of 35 No.: Model Name: Check 4 Check 5 DHS5 still an error, perform Check 4. The FL inverter board may be faulty. Replace it with a new one and return to Procedure 2. If there is still an error, perform Check 5. Make sure the LCD/FL cable has been firmly connected to the system board and LCD module.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 26 of 35 No.: Model Name: DHS5 1.8 DVD-ROM Drive To check if the internal DVD-ROM drive is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) C4-425 Trouble Shooting Guide Subject: 99.K4501.001 Project Code: Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 27 of 35 No.: DHS5 Model Name: DVD-ROM drive Attachment case System board CPU Connector If the connector is loose or off, reconnect it firmly and return to Procedure 2. If there is still an error, perform Check 2. The connector may be faulty.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 28 of 35 No.: Model Name: DHS5 1.9 Combo Drive To check if the internal Combo drive is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 29 of 35 No.: Model Name: Check 1 DHS5 Make sure the following connector has been firmly connected to the Combo drive and the system board. CD-ROM drive Attachment case System board CPU Connector If the connector is loose or off, reconnect it firmly and return to Procedure 2.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 30 of 35 No.: Model Name: DHS5 1.10 Cooling Module To check if the computer’s cooling module is defective or malfunctioning, follow the troubleshooting procedures below as instructed.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 31 of 35 No.: Model Name: DHS5 free of foreign matter. Cooling module Check 2 System board CPU If the connector is disconnected, connect it firmly to the system board and return to Procedure 1. If the tape is stuck to any part of the fan, stick it back to the specified point.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 32 of 35 No.: Model Name: DHS5 Check 2 The FFC or connector may be faulty. Replace the FFC or connector with a new one following the steps in Tear Down guide. If the Touch Pad is still not functioning properly, perform Check 3. Check 3 The Touch Pad may be faulty.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 33 of 35 No.: Model Name: DHS5 System board Left speaker Check 2 Check 3 CPU Right speaker If the cable of speaker is disconnected, connect it firmly and return to Procedure 1. If there is still an error, perform Check 2. The system board may be faulty.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 34 of 35 No.: Model Name: DHS5 1.14 Battery life (Battery Learning) To maximize the life of your battery pack: . At least once a month, disconnect the computer from a power source and operate it on battery power until the battery pack fully discharges. Before doing so, follow the steps below. 1.
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Product System (PS) Subject: Project Code: C4-425 Trouble Shooting Guide 99.K4501.001 Part No.: 99.K4501.000 Doc. No. 99.K4501.000-C4-425-001 Component Part. NA Rev.: Page 0 35 of 35 No.