IBM 140A, 140C, 140F, 140H, 140K, 140L, 140M, 140T, 1419, 143C, 143H, 143K, 143L, 143M, 143T, 1452, 1456, 1459, 1472, 1476, 1479, 147A, 147F, 149C, 149F, 149H, 149K, 149M, 149T, 1412 48

Note: The upper cover has several latches. When

removing the upper cover from the base cover,

gently release these latches, then raise the side of

the upper cover facing the palm rest to remove it.

Be careful not to break the latches.

Step

Size

(Quan-

tity) Head &

Color Torque Memo

2 M2.5 x

6L (1) Pan

head,

black

3.2

kgf-cm w/

nylock

paste

Note: Make sure you use the correct screw for replacement.

48 ThinkPad i Series 1400

Contents

Main Page Contents iv ThinkPad i Series 1400 Hardware Maintenance Manual Read This First How to Use Error Messages How to Diagnose Multiple FRUs What to Do First 2 Screw Notices Power-On and Setup Password 4 Check Procedures Power Systems Check Checking the AC Adapter: 6 Checking the Operational Charging: Checking the Battery Pack: Planar Board Check Memory Check 8 Keyboard and External Input Device Check Audio Function Check TrackPoint IV Check 10 Diskette Drive Check CD-ROM/DVD-ROM Drive Check Modem Board Check 12 BIOS Utility Navigating the BIOS Utility 14 Power Management Features Screen Blanking Mode Standby Mode Hibernation Mode 16 Symptom-to-FRU Index Numeric Error Codes and Messages 18 Beep Symptoms No Beep Symptoms ThinkPad i Series 1400 19 Keyboard/TrackPoint-Related Symptoms LCD-Related Symptoms 20 ThinkPad i Series 1400 21 Indicator-Related Symptoms Power-Related Symptoms 22 Memory-Related Symptoms Audio-Related Symptoms PC Card (PCMCIA)-Related Symptoms ThinkPad i Series 1400 23 Power Management-Related Symptoms Peripheral-Device-Related Symptom 24 Modem-Related Symptoms Intermittent Problems Undetermined Problems Page Related Service Procedures Flash Memory Update Status Indicators (A-Z) 28 Not all application programs support this function. Power Switch Diagnostic Program Diskette Running the PC Doctor Diagnostics Program: Using the PC Doctor Diagnostics Program: Maintenance Program Diskette Running the Maintenance Program Diskette: 30 Setting the LCD Panel ID: Setting the Thermal Sensor: Writing the VPD Data: Fn Key Combinations 32 Product Overview ThinkPad i Series 1400 33 The following shows an overview of the system features. FRU Removals and Replacements 34 Before FRU Removals and Replacements Screw Type Example Explanation Plugging the Cable: Unplugging the Cable: FPC Cable Connector Type Page DIMM and DIMM Cover Modem Board Cover and Modem Board 38 Keyboard 40 CPU Thermal Plate RTC Battery, CPU EMI Shield and Hard Disk Drive 42 Page PCMCIA Holder 44 LCD Assembly 46 Upper Cover (Keyboard Bezel) 48 CD Control Card Trajection Board and Modem Connector (RJ11 Cable Assembly) 50 DC/DC Charger Audio PCB and S-Video PCB 52 Audio Cable and Speaker Cable Page Audio Connector Board Fan Assembly 56 Diskette and CD-ROM/DVD-ROM Drives Assembly CD-ROM/DVD-ROM Module 58 Diskette Drive (FDD with Bezel) Planar Board 60 LCD Front Cover (12.1-inch) Speakers Indicator Board and Microphone Cable Assembly 62 LCD Panel, LCD Cable and Inverter 64 Hinge LCD Front Cover (14.1-inch) 66 Speakers Indicator Board and Microphone Cable Assembly LCD Panel, LCD Cable and Inverter 68 Page 70 Hinge Locations Front View 72 Bottom View Rear View Switch Locations Keyboard Language (SW3, Switch 1, 2 and 3) Setting 74 Password (SW3, Switch 4) Setting Non-configurable Switches System Unit Parts Listing ThinkPad i Series 1400 75 76 ThinkPad i Series 1400 77 78 LCD Unit Parts Listing 12.1" LCD Unit Parts Listing ThinkPad i Series 1400 79 80 14.1" LCD Unit Parts Listing ThinkPad i Series 1400 81 82 Miscellaneous Parts ThinkPad i Series 1400 83 Telephone/Modem 84 Page Notices 86 Trademarks

IBM manual 48

Models: 140A 140C 140F 140H 140K 140L 140M 140T 1419 143C 143H 143K 143L 143M 143T 1452 1456 1459 1472 1476 1479 147A 147F 149C 149F 149H 149K 149M 149T 1412