IBM Mobile Systems S09N-8590-00 ThinkPad 240 Hardware Maintenance Manual December 2000 i Before using this information and the product it supports, be sure to read the general information under "Read This First" on page 1. Second Edition (October 1999) The following paragraph does not apply to the United Kingdom or any country where such provisions are inconsistent with local law: INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS" WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE LIMITED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimers or express or implied warranties in certain transactions; therefore, this statement may not apply to you. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements or changes in the products or the programs described in this publication at any time. It is possible that this publication may contain references to, or information about, IBM products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country. Requests for technical information about IBM products should be made to your IBM Authorized Dealer or your IBM Marketing Representative. © Copyright International Business Machines Corporation 1999. All rights reserved. Note to US Government Users -- Documentation related to restricted rights -- Use, duplication, or disclosure is subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp. Contents ThinkPad 240 Hardware Maintenance Manual Read This First . . . . . . . . . . . . . . . . What to Do First . . . . . . . . . . . . . . How to Disable the Password ....... Product Overview . . . . . . . . . . . . . . . Fn Key Combinations ........... Status Indicators . . . . . . . . . . . . . . Checkout Guide ............... Audio Checkout . . . . . . . . . . . . . . Fan ASM Checkout ............ Keyboard and Auxiliary Input Device Checkout Memory Checkout . . . . . . . . . . . . . Modem Board Checkout . . . . . . . . . . Power System Checkout . . . . . . . . . . TrackPoint Checkout . . . . . . . . . . . . I/O Ports Checkout ............ Power Management Features ....... Symptom-to-FRU Index . . . . . . . . . . . . Numeric Error Codes . . . . . . . . . . . . Error Messages . . . . . . . . . . . . . . No Beep Symptoms . . . . . . . . . . . . LCD-Related Symptoms .......... Keyboard-Related Symptoms . . . . . . . . Indicator-Related Symptoms ........ Power-Related Symptoms ......... PC Card (PCMCIA)-Related Symptoms . . . Speaker-Related Symptoms ........ Power Management-Related Symptoms . . . Peripheral-Device-Related Symptom .... Intermittent Problems ........... Undetermined Problems .......... CE Utility Program Diskette .......... Writing the VPD Data ........... Flash UUID ................ Running the Diagnostics . . . . . . . . . . . . FRU Removals and Replacements . . . . . . . FRU Service Procedures . . . . . . . . . . 1010 Battery ASM . . . . . . . . . . . . . 1020 Hard Disk Drive ........... 1030 Keyboard .............. 1040 Modem Card . . . . . . . . . . . . . 1050 DIMM Card ............. 1060 LCD Unit ASM . . . . . . . . . . . . 1070 Upper Cover ASM .......... 1080 Speaker ASM ............ 1085 Select Button ASM . . . . . . . . . . 1090 Cable ASM and Cable ASM LED-R . . 1100 Fan ASM .............. 1110 Modem Cable ASM . . . . . . . . . . 1120 Water Channel ASM ......... 1130 System Board ............ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 2 3 4 5 6 7 8 8 9 9 10 10 12 13 13 16 16 18 19 19 19 19 20 20 20 20 21 21 22 23 23 23 23 24 24 26 27 28 30 31 32 34 36 37 38 39 41 42 43 Contents iii 1135 Rear Bracket . . . . . . . . . . . 1140 PCMCIA Slots . . . . . . . . . . 1150 LCD Bezel ASM ......... 1160 LCD Inverter ASM ........ 1170 LCD Panel ASM (LCD Type A and B) 1180 LCD FPC ASM (LCD Type A) . . . 1185 LCD FPC ASM (LCD Type B) . . . 1190 Hinge ASM ........... Computer Parts Listing .......... LCD Unit Parts Listing (LCD Type A) . . . . LCD Unit Parts Listing (LCD Type B) . . . . Service Tools . . . . . . . . . . . . . . . Notices . . . . . . . . . . . . . . . . . . Trademarks ............... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 46 47 48 49 51 52 53 54 58 59 59 61 61 iv ThinkPad 240 ThinkPad 240 Hardware Maintenance Manual About This Manual This manual contains service and reference information for the IBM ThinkPad 240 products. Use this manual along with the diagnostics tests to troubleshoot problems effectively. There are two models of LCD panel used with the ThinkPad 240: LCD Type A and LCD Type B. Check the last five letters of the unit's serial number you are servicing to determine the model. LCD Type A: All ThinkPad 240 computers that have serial numbers whose last five alphanumeric characters are "00001" to "YZZZZ" are fitted with Type A panels. Note: The number range is from 00001 to 99999, and the letter range is from AAAAA to YZZZZ. LCD Type B: All ThinkPad 240 computers that have serial numbers whose last five letters are "ZAAAA" to "ZZZZZ" are fitted with Type B panels. The servicer need only check the fifth letter from the end. If the fifth letter from the end is "0 -- Y" (inclusive), then the LCD panel is Type A. If the fifth letter from the end is "Z", then the LCD panel is Type B. The manual is divided into sections as follows: The introduction section provides general information, guidelines, and safety information required to service computers. The product-specific section includes service, reference, and product-specific parts information. This manual is intended for trained servicers who are familiar with ThinkPad products. Use this manual along with the PC Doctor to troubleshoot problems effectively. Read This First Before you go to the checkout guide, be sure to read this section. Important Notes Only certified trained personnel should service the computer. Read the entire FRU service procedures before replacing any FRUs. ThinkPad 240 1 Use new nylon-coated screws when you replace FRUs. Be extremely careful during write operations such as copying, saving, or formatting. Drives in the computer that you are servicing might have been rearranged or the drive startup sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten. Replace FRUs only for the correct model. When you replace a FRU, make sure the model of the computer and FRU part number are correct by referring to the FRU parts list. A FRU should not be replaced because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. If this is suspected, clear the error log and run the test again. Do not replace any FRUs if log errors do not reappear. Be careful not to replace a non-defective FRU. What to Do First The servicer must include the following in the parts exchange form or parts return form that is attached to the returned FRU: 1. Name and phone number of servicer 2. Date of service 3. Date when part failed 4. Date of purchase 5. Failure symptoms, error codes appearing on the display, and beep symptoms 6. Procedure index and page number in which the failing FRU was detected 7. Failing FRU name and part number 8. Computer type, model number and serial number 9. Customer's name and address Before checking problems with the computer, determine whether or not the damage applies to the warranty by referring to the following: Note for Warranty: During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer. The following list provides some common items that are not covered under warranty 2 ThinkPad 240 and some symptoms that may indicate that the system was subjected to stresses beyond normal use: The following is not covered under warranty: LCD panel cracked by applying excessive force or from being dropped Scratched (cosmetic) parts Cracked or broken plastic parts, broken latches, broken pins, or broken connectors caused by excessive force Damage caused by liquid spilled into the system Damage caused by the improper insertion of a PC Card or the installation of an incompatible card Damaged or bent PC Card eject button Fuses blown by attachment of a non-supported device Forgotten computer password (making the computer unusable) The following symptoms might indicate damage caused by non-warranted activities: Missing parts might be a symptom of unauthorized service or modification. Hard disk drive spindles can become noisy from being subjected to excessive force or from being dropped. How to Disable the Password There are three passwords used at a typical customer site: the Supervisor Password, the hard disk drive password, and the Power On password. Power On password: 1. Power off the computer. 2. Remove the battery pack and AC Adapter. 3. Open the keyboard and disconnect the keyboard connector from the system board, see "1030 Keyboard" on page 28. 4. Short the jumper JP1. See the following figure: ThinkPad 240 3 5. Close the keyboard. 6. Power on the computer and wait until POST ends. 7. Verify that the password prompt does not appear. Supervisor and hard disk drive passwords: The Supervisor Password and hard disk drive password are security features that are used to protect the system and the hard disk drive data from unauthorized access. No overriding capability is provided, so it cannot be replaced if they are forgotten. If the customer forgets the Supervisor Password, the system board must be replaced. If the customer forgets the hard disk drive password, the hard disk drive must be replaced. Product Overview The following shows an overview of the system features of the ThinkPad 240 computer. Feature Processor Description Intel** Celeron** processor 366 MHz, 128KB L2 cache Bus architecture Memory PCI Bus 64 MB SDRAM onboard only 32 MB, 64 MB or 128 MB DIMM card (max. 192 MB) BIOS ROM Video up to 512 Kbytes 10.4­inch, 16M colors, 800x600 pixel TFT color LCD 4 ThinkPad 240 Feature Audio Description 16­bit audio Internal speaker Internal microphone Hard disk drive I/O ports 3.2/6.4GB, 2.5­inch, IDE interface External monitor Headphone/line-out Line-in Microphone-in Mouse/keyboard Parallel Serial USB RJ11 External diskette drive Infrared transfer Internal modem PC Card (PCMCIA) IrDA 1.1 56Kbps (depends on the model) One Type II CardBus support AC Adapter 56­Watt type Fn Key Combinations The following table shows the Fn key and function key combinations and their corresponding functions. The Fn key works independently of the operating system. The operating system obtains the status through the system management interface to control the system. Fn + F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 0 (zero) (minus) = Result Standby mode Suspend mode Decrease brightness Increase brightness Switch between the LCD, the external monitor, and both the LCD and external monitor. Switch power mode Hibernation mode Print screen Scroll lock Pause Activates the system request function Enables the numeric keypad Signals a break ThinkPad 240 5 Fn + Up arrow Down arrow Left arrow Right arrow Insert Delete Backspace Result Page up Page down Home End Decreases the internal speaker volume Increases the internal speaker volume Mutes the internal speaker Status Indicators The system status LED indicators show the current computer status. The following shows the location of each indicator symbol and the meaning of each indicator. Pad Think Symbol (1) Battery status Color Green Blinking orange Orange Meaning Enough battery power remains for operation. The battery pack needs to be charged. The battery pack is being charged. The computer is in suspend mode. The computer is entering suspend mode. (2) Suspend mode Green Blinking green 6 ThinkPad 240 Symbol (3) Drive in use Color Orange Meaning Data is being read from or written to the hard disk drive. Do not enter hibernation mode or power off the computer when this indicator is on. The numeric keypad on the keyboard is enabled. You enable or disable the keypad by pressing and holding the Fn key, and pressing the N ...