Portege M200 Part2 Chapter 2 Troubleshooting Procedures
Troubleshooting Procedures 2 2-ii Portege M200 Maintenance Manual (960-457)
2 Troubleshooting Procedures Chapter 2 Contents 2.1 Troubleshooting ......................................................................................................... 2-1 2.2 Troubleshooting Flowchart........................................................................................ 2-2 2.3 Power Supply Troubleshooting.................................................................................. 2-6 2.4 2.5 2.6 2.7 Procedure 1 Power Supply Icon Check............................
2 Troubleshooting Procedures 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.17 2-iv Display Troubleshooting.......................................................................................... 2-40 Procedure 1 Diagnostic Test Program Execution Check ......................... 2-40 Procedure 2 Connector and Cable Check................................................. 2-40 Procedure 3 Fuse connection check .........................................................
2 Troubleshooting Procedures Procedure 1 Trancemitting-Receiving Check .......................................... 2-54 Procedure 2 Antennas’ Connection Check .............................................. 2-55 Procedure 3 Antenna Check..................................................................... 2-56 Procedure 4 Replacement Check ............................................................. 2-56 Figures Figure 2-1 Troubleshooting flowchart....................................................
2 Troubleshooting Procedures 2-vi Portege M200 Maintenance Manual (960-457)
2.1 Troubleshooting 2 Troubleshooting 2 2.1 Troubleshooting Chapter 2 describes how to determine which Field Replaceable Unit (FRU) in the computer is causing the computer to malfunction. (The “FRU” means the replaceable unit in the field.) The FRUs covered are: 1. 2. 3. 4. 5. 6. 7. 8. Power supply System Board 3.5" USB FDD 2.5" HDD Keyboard Display Touch pad Modem 9. LAN 10. Sound 11. SD card slot 13. Tablet pen 14. Wireless LAN 15.
2 Troubleshooting Procedures 2.2 2.2 Troubleshooting Flowchart Troubleshooting Flowchart Use the flowchart in Figure 2-1 as a guide for determining which FRU malfunctions. Before going through the flowchart steps, check the following: Make sure that Toshiba Windows® XP Tablet PC Edition is installed on the hard disk. Non-Toshiba operating systems can cause the computer malfunction. Make sure all optional equipment is removed from the computer. Make sure the USB FDD is empty.
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2 Troubleshooting Procedures 2.
2.2 Troubleshooting Flowchart 2 Troubleshooting If the diagnostics program cannot detect an error, the problem may be intermittent. The Test program should be executed several times to isolate the problem. Check the Log Utilities function to confirm which diagnostic test detected an error(s), then perform the appropriate troubleshooting procedures as follows: 1.
2 Troubleshooting Procedures 2.3 2.3 Power Supply Troubleshooting Power Supply Troubleshooting The power supply controller controls many functions and components. To determine if the power supply is functioning properly, start with Procedure 1 and continue with the other Procedures as instructed.
2.3 Power Supply Troubleshooting Procedure 1 2 Troubleshooting Power Supply Icon Check The following two icons indicate the power supply status: Battery icon DC IN icon The power supply controller uses the power supply status with the Battery icon and the DC IN icon as listed in the tables below. Table 2-1 Battery icon Battery icon Power supply status Lights orange Battery is charged and the external DC is input. It has no relation with ON/OFF of the system power.
2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting When icons are blinking, perform the following procedure. 1. Remove the battery pack and the AC adapter and cut off the power supply to the computer by force. 2. Re-attach the battery pack and the AC adapter. If icons are still blinking after the operation above, check the followings: Check 1 If the DC IN icon blinks orange, go to Procedure 2. Check 2 If the DC IN icon does not light, go to Procedure 3.
2.3 Power Supply Troubleshooting Procedure 2 2 Troubleshooting Error Code Check If the power supply microprocessor detects a malfunction, the DC IN icon blinks orange. The blink pattern indicates an error as shown below. Start Error code (8 bit) “1” “0” Interval between data bits The error code begins with LSB (Least Significant bit) Example: Error code 11h (Error codes are given in hexadecimal format.
2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting Main Battery Error code Meaning 20h Overvoltage is detected. (This is not supported.) 21h Main battery charge current is over 7.00A. 22h Main battery discharge current is over 0.5A when there is no load. 23h Main battery charge current is over 3.1A when AC adapter is not connected. 24h Abnormal current has been sensed 0[A]. 25h Main battery charge current is over 0.3A.
2.3 Power Supply Troubleshooting 2 Troubleshooting 1R5-C1V output (P61) Error code Meaning 50h 1R5-C1V voltage is over 1.80V when the computer is powered on/off. 51h 1R5-C1V voltage is 1.275V or less when the computer is powered on. 52h 1R5-C1V voltage is 1.275V or less when the computer is booting up. 53h 1R5-C1V voltage is 1.275V or less when the computer is suspended. 54h 1R5-C1V voltage is abnormal during shutdown (CV support) 55h 1R5-C1V voltage is 1.
2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting PGV output (P64 : MUX_CH0) Error code Meaning 80h PGV voltage is over 1.62V when the computer is powered on/off. 81h PGV voltage is 0.68V or less when the computer is powered on. 82h PGV voltage is 0.68V or less when the computer is booting up. 83h PGV voltage is 0.68V or more when the computer is powered off. 84h PGV voltage is 0.68V or less when the computer is suspended.
2.3 Power Supply Troubleshooting 2 Troubleshooting 2R5-P2V output (P64 : MUX_CH1) Error code Meaning C0h 2R5-P2V voltage is over 3.00V when the computer is powered on. C1h 2R5-P2V voltage is 2.125V or less when the computer is powered on. C2h 2R5-P2V voltage is 2.125V or less when the computer is booting up. C3h 2R5-P2V voltage is 2.125V or more when the computer is powered off. C4h 2R5-P2V voltage is 2.125V or less while the computer is suspended.
2 Troubleshooting Procedures Check 4 2-14 2.3 Power Supply Troubleshooting For any other errors, go to Procedure 5.
2.3 Power Supply Troubleshooting Procedure 3 2 Troubleshooting Connection Check The wiring diagram related to the power supply is shown below: Any of the connectors may be disconnected. Perform starting from Check 1. Check 1 Make sure the AC adapter and the AC power cord are firmly plugged into the DC IN 15 V socket and wall outlet. If these cables are connected correctly, go to Check 2. Check 2 Replace the AC adapter and the AC power cord with new ones.
2 Troubleshooting Procedures Procedure 5 2.3 Power Supply Troubleshooting Replacement Check The power is supplied to the system board by the AC adapter. If either the AC adapter or the system board was damaged, perform the following Checks. To disassemble the computer, follow the steps described in Chapter 4. Check 1 Replace the AC adapter with a new one. If the AC adapter is still not functioning properly, perform Check 2. Check 2 Replace the system board with a new one.
2.4 System Board Troubleshooting 2.4 2 Troubleshooting System Board Troubleshooting This section describes how to determine if the system board is defective. Start with Procedure 1 and continue with the other procedures as instructed.
2 Troubleshooting Procedures Procedure 1 2.4 System Board Troubleshooting Message Check When the power is turned on, the system performs the Initial Reliability Test (IRT) installed in the BIOS ROM. The IRT tests each IC on the system board and initializes it. If an error message is shown on the display, perform Check 1. If there is no error message, go to Procedure 2. If MS-DOS or Windows XP Tablet PC Edition is properly loaded, go to Procedure 4.
2.4 System Board Troubleshooting Check 3 2 Troubleshooting The IRT checks the system board. When the IRT detects an error, the system stops or an error message appears. If one of the following error messages (1) through (17), (24) or (25) is displayed, go to Procedure 5. If error message (18) is displayed, go to the Keyboard Troubleshooting Procedures in Section 2.7. If error message (19), (20) or (21) is displayed, go to the 2.5” HDD Troubleshooting Procedures in Section 2.6.
2 Troubleshooting Procedures Procedure 2 2.4 System Board Troubleshooting Debug Port (D port) Check on Boot Mode Check the D port status by a debug port test. The tool for debug port test is shown below. Figure 2-2 A tool set for debug port test The test procedures are follows; 1. Connect the debug test cable to the connector PJ2000 of the system board. For disassembling to connect the test cable, refer to Chapter 4. 2. Connect the debug port test cable and RS-232C cross-cable to the test board. 3.
2.4 System Board Troubleshooting 2 Troubleshooting 5. Execute GETDPORT.COM in the text menu in CPU REAL mode. (Insert the FD for starting D port into FDD and input “FD starting drive:>dport”.) The D port status is displayed in the following form; 6. When the D port status is FFFFh (normal status), go to Procedure 3. 7. When the D port status falls into any status in Table 2-3, execute Check 1.
2 Troubleshooting Procedures 2.4 System Board Troubleshooting Table 2-3 D port status (1/7) D port status F000h Details Remarks Clearing software reset bit Enabling address line A20 Initializing special registers and M1535 Initializing the CH0 of a PIT (for HOLD_ON) Initializing flag for BIOS rewriting factor CHECK SUM CHECK (FEFC0000h to FEFF7FFFh) Shifting to protected mode Examining the checksum of Boot Block HALT when checksum is not correct.
2.4 System Board Troubleshooting 2 Troubleshooting Table 2-3 D port status (2/7) D port status Details F009h Key inputting Remarks Loading CHGBIOSA.EXE and CHGFIRMA.EXE Resetting FDC Setting parameter for 2HD (1.44MB) and transmission rate Reading the first sector When it is sector for 2HD, media type is determined. Setting parameter for 2DD (720KB)and transmission rate Searching CHGBIOSA.
2 Troubleshooting Procedures 2.4 System Board Troubleshooting Table 2-3 D port status (3/7) D port status Details F102h Configuring cache memory Remarks Enabling L1 cache memory Testing CMOS for access (on Cold Booting) Checking remaining of CMOS backup battery Examining checksum of CMOS Initializing data in CMOS (1) Setting up IRT status (Set "1" for Boot status and IRT busy flag bit. Set "0" for other bits.
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2 Troubleshooting Procedures 2.4 System Board Troubleshooting Table 2-3 D port status (5/7) D port status Details F107h Storing memory size of ROM in buffer Remarks Reading EC version Updating the type of flash ROM Determining the destination based on DMI data Set to default value to CMOS if Bad Battery or Bad Checksum (ROM, CMOS) exists.
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2 Troubleshooting Procedures 2.
2.4 System Board Troubleshooting 2 Troubleshooting Check 1 If the D port status error code F119h is displayed, go to the 3.5” USB FDD Troubleshooting Procedures in Section 2.5 or the 2.5” HDD Troubleshooting Procedures in Section 2.6. Check 2 If any other D port status error code is displayed, perform Procedure 3.
2 Troubleshooting Procedures Procedure 3 2.4 System Board Troubleshooting Diagnostic Test Program Execution Check Execute the following tests from the Diagnostic Test Menu. These tests check the system board. Refer to Chapter 3, Tests and Diagnostic, for more information on how to perform these tests. 1. System test 2. Memory test 3. Keyboard test 4. Display test 5. USB Floppy Disk test 6. ASYNC test 7. Hard Disk test 8. Real Timer test 9. NDP test 10. Expansion test 11. Wireless LAN test 12.
2.5 USB 3.5” FDD Troubleshooting 2 Troubleshooting 2 2.5 USB 3.5” FDD Troubleshooting This section describes how to determine if the USB 3.5” FDD is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.
2 Troubleshooting Procedures Procedure 2 2.5 USB 3.5” FDD Troubleshooting Diagnostic Test Program Execution Check Insert the Diagnostics Disk in the USB FDD, turn on the computer and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures. Make sure the floppy disk is formatted correctly and that the write protect tab is disabled. Floppy disk drive test error codes and their status names are listed in Table 2-4.
2.5 USB 3.5” FDD Troubleshooting Procedure 3 2 Troubleshooting Connector Check and Replacement Check The USB FDD connector may be disconnected from the connector on the system board. Check visually that the connector is connected firmly. Check 1 Make sure the USB FDD cable is firmly connected to the PJ4600 or PJ4601 of the system board. System board USB FDD PJ4600 or PJ4601 If any of the connections are loose, reconnect firmly and repeat Procedure 2. If there is still an error, go to Check 2.
2 Troubleshooting Procedures 2.6 2.6 2.5” HDD Troubleshooting 2.5” HDD Troubleshooting This section describes how to determine if the 2.5” HDD is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. Procedure 1: Partition Check Procedure 2: Message Check Procedure 3: Format Check Procedure 4: Diagnostic Test Program Execution Check Procedure 5: Connector Check and Replacement Check CAUTION: The contents of the 2.
2.6 2.5” HDD Troubleshooting Procedure 2 2 Troubleshooting Message Check When the power is turned on, the system performs the Initial Reliability Test (IRT) installed in the BIOS ROM. When the test detects an error, an error message is displayed on the screen. Make sure of no floppy disk in the FDD. Turn on the computer and check the message on the screen. When an OS starts from the 2.5” HDD, go to Procedure 3. Otherwise, start with Check 1 below and perform the other checks as instructed.
2 Troubleshooting Procedures Procedure 3 2.6 2.5” HDD Troubleshooting Format Check The computer’s 2.5" HDD is formatted using the MS-DOS FORMAT program or the physical format program of the test program. To format the 2.5" HDD, start with Check 1 below and perform the other steps as required. Refer to the MS-DOS Manual for the operation of MS-DOS. For the format by the test program, refer to the Chapter 3. Check 1 Format the 2.5" HDD using MS-DOS FORMAT command. Type as FORMAT C:/S/U. If the 2.
2.6 2.5” HDD Troubleshooting Procedure 4 2 Troubleshooting Diagnostic Test Program Execution Check The HDD test program is stored in the Diagnostics Disk. Perform all of the HDD tests in the Hard Disk Drive Test. Refer to Chapter 3, Tests and Diagnostics, for more information about the HDD test program. If an error is detected during the HDD test, an error code and status will be displayed. The error codes and statuses are described in Table 2-5.
2 Troubleshooting Procedures Procedure 5 2.6 2.5” HDD Troubleshooting Connector Check and Replacement Check The HDD is connected to the connector PJ1800 of the system board. The connecting portion may be disconnected. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks to check the connecting portion: Check 1 Make sure the HDD is firmly connected to the system board.
2.7 Keyboard Troubleshooting 2.7 2 Troubleshooting Keyboard Troubleshooting To determine if the computer’s keyboard is functioning properly, perform the following procedures. Start with Procedure 1 and continue with the other procedures as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Keyboard Test in the Diagnostic Program.
2 Troubleshooting Procedures 2.8 2.8 Display Troubleshooting Display Troubleshooting This section describes how to determine if the computer’s display is functioning properly. Start with Procedure 1 and continue with the other procedures as instructed.
2.8 Display Troubleshooting Procedure 4 2 Troubleshooting Replacement Check The display unit has a FL inverter board, Display module, System board, LCD harness and Display ON/OFF switch. Any of the components may be damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, then perform the following checks: (1) If characters or graphics are not displayed on the internal display, perform Check 1.
2 Troubleshooting Procedures 2.9 2.
2.10 Modem Troubleshooting 2 Troubleshooting 2.10 Modem Troubleshooting To check if the modem is defective or malfunctioning, follow the troubleshooting procedures below as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Modem test program available as part of the maintenance test program. This program checks the modem.
2 Troubleshooting Procedures 2.11 LAN Troubleshooting 2.11 LAN Troubleshooting To check if the computer’s LAN is defective or malfunctioning, follow the troubleshooting procedures below as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check To check the LAN function, execute the Sound/LAN/modem test program subtest 04 (LAN test). See Chapter 3 for information on how to perform the test.
2.12 Sound Troubleshooting 2 Troubleshooting 2.12 Sound Troubleshooting To check if the sound function is defective or malfunctioning, follow the troubleshooting procedures below as instructed. Procedure 1: Diagnostic Test Program Execution Check Procedure 2: Connector Check Procedure 3: Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Sound test program available as part of the maintenance test program. See Chapter 3 for information on how to perform the test.
2 Troubleshooting Procedures Procedure 3 2.12 Sound Troubleshooting Replacement Check Check 1 If any of the speaker and internal microphones is not working properly, the part may be faulty. Replace it with a new one following the step in Chapter 4 If there is still an error, go to Check 2. Check 2 The system board may be faulty. Replace it with a new one following the step in Chapter 4. If there is still an error, perform Check 3. Check 3 The headphone may be faulty. Replace it with a new one.
2.13 SD Card Slot Troubleshooting 2 Troubleshooting 2.13 SD Card Slot Troubleshooting To check if the SD card slot is good or no good, follow the troubleshooting procedures below as instructed. Procedure 1: Check on Windows XP Tablet PC Edition Procedure 2: Connector/Replacement Check Procedure 1 Check on Windows XP Tablet PC Edition Insert an SD card into the slot. Check if the installed Windows XP Tablet PC Edition recognizes automatically the SD card and the data in the SD card can be read.
2 Troubleshooting Procedures 2.14 Tablet Pen Troubleshooting 2.14 Tablet Pen Troubleshooting To check if the Tablet Pen is defective or not, follow the troubleshooting procedures below as instructed. CAUTION: Use the supplied Tablet Pen in this test.
2.14 Tablet Pen Troubleshooting Procedure 3 2 Troubleshooting Connector/Replacement Check The Digitizer and LCD are connected to the system board as below. System board PJ3540 PJ5205, PJ5206 Digitizer LCD Check 1 The Digitizer might not be connected. Make sure the Digitizer is connected to the PJ3540 on the system board. If there is still an error, go to Check 2. Check 2 The LCD might not be connected. Make sure the LCD is connected to the PJ5205 and PJ5206 on the system board.
2 Troubleshooting Procedures 2.15 Wireless LAN Troubleshooting 2.15 Wireless LAN Troubleshooting To check if the Wireless LAN is good or no good, follow the troubleshooting procedures below as instructed. Procedure 1: Transmitting-Receiving Check Procedure 2: Antennas' Connection Check Procedure 3: Antenna Check Procedure 4: Replacement Check Procedure 1 Transmitting-Receiving Check Make sure the wireless communication switch on the computer is turned ON. If it is not, turn ON.
2.15 Wireless LAN Troubleshooting 2 Troubleshooting Procedure 2 Antennas' Connection Check The wireless LAN function wiring diagram is shown below: PJ2200 Any of the connections may be disconnected. Disassemble the computer following the steps described in Chapter 4, perform the following checks: Check 1 The wireless LAN board and the system board may be disconnected. Make sure the wireless LAN board is firmly connected to the PJ2200 of the system board.
2 Troubleshooting Procedures 2.15 Wireless LAN Troubleshooting Procedure 3 Antenna Check Use an antenna test cable to check the antennas' connection. Follow the steps below. Any of the connections may be disconnected. Disassemble the computer following the steps described in Chapter 4, perform the following checks 1. Disassemble the computer and disconnect the wireless LAN antennas (white and black) from the wireless LAN board.
2.15 Wireless LAN Troubleshooting Procedure 4 2 Troubleshooting Replacement Check Check if the wireless LAN board and the system board are connected properly. If they are properly connected but there is stall an error, any of these components may be damaged. Disassemble the computer following the steps described in Chapter 4 and replace the board with a new one. Check 1 The wireless LAN board may be defective or damaged.
2 Troubleshooting Procedures 2.16 Bluetooth Troubleshooting 2.16 Bluetooth Troubleshooting This section describes how to determine if the computer's Bluetooth is functioning properly. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.
2.16 Bluetooth Troubleshooting Procedure 2 2 Troubleshooting Antennas' Connection Check The Bluetooth function wiring diagram is shown below: PJ4410 Any of the connections may be disconnected. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, and perform the following checks: Check 1 Make sure the wireless communication switch is “On”. If the switch is “Off”, turn it “On”. If the Bluetooth module is still not functioning properly, perform Check 2.
2 Troubleshooting Procedures Procedure 3 Check 1 2.16 Bluetooth Troubleshooting Antenna Check Use an antenna test cable to check the antennas' connection. Follow the steps below: 1. Disassemble the computer and disconnect the Bluetooth antenna cable connected to the Bluetooth module. Refer to Chapter 4, Replacement Procedures, for detailed steps of disassembling 2. Connect the end of the antenna test cable to the multimeter. 3. Connect the Bluetooth antenna cable to the antenna test cable.
2.16 Bluetooth Troubleshooting Check 2 2 Troubleshooting The system board may be defective or damaged. Replace the system board with a new one following the steps in Chapter 4, Replacement Procedures.
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