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Apple 210 Laptop User Manual

1. 1 Install the PowerBook 250 logic board and display assembly see Logic Board and Display Assembly in Take Apart m 270c Upgrade 15 Duo 270c Upgrade Kit 270c Upgrade Before you begin do the following Disconnect the power adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the center clutch cover Remove the hard drive Remove the backup battery Remove the trackball assembly lt i gt 270c Upgrade 16 e Remove the display assembly e Remove the CPU stiffener e Remove the logic board Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage Review the ESD precautions in Bulletins Safety quip 270c Upgrade 17 Note A PowerBook Duo 270c upgrade kit upgrades a PowerBook Duo 210 230 to a PowerBook Duo 270c The upgrade kit is an assembled PowerBook Duo 270c without the keyboard trackball and hard drive 1 Install the PowerBook Duo 210 230 key board trackball and hard drive in the PowerBook Duo 270c upgrade kit see Key board Trackball Assembly and Hard Drive in Take Apart quip 270c Upgrade 18 Note If a modem is installed in the Duo 210 230 be sure to transfer it to the Duo 27 0c kit m 280 280c Upgrade 19 280 280c Upgrade Before you begin do the following e Disconnect the power adapter e Remove the main b
2. Service Source PowerBook 200 Series PowerBook Duo 210 PowerBook Duo 230 PowerBook Duo 250 PowerBook Duo 270c PowerBook Duo 280 PowerBook Duo 280c PowerBook Duo Floppy Adapter gt Service Source Basics PowerBook 200 Series m System Overview 1 ej Basics PowerBook Duo 210 230 250 270c 280 280c System Overview PowerBook Duo System The PowerBook Duo system includes the following products e PowerBook 200 Series computer shown at left PowerBook Duo 210 230 250 270c 280 280c e PowerBook 2300 Series computer PowerBook Duo 2300c ui System Overview 2 Duo Dock Duo Dock II Duo Dock Plus j Duo Floppy Adapter Duo 210 230 250 270c n L mE Duo MiniDock 280 280c e PowerBook Duo Floppy Adapter e PowerBook Duo Dock Duo Dock II Duo DockPlus e PowerBook Duo MiniDock This manual includes information about the PowerBook 200 Series computers and the floppy adapter For information about the PowerBook 2300 Series Duo Docks or the Duo MiniDock refer to the appropriate PowerBook Duo manual m Repair Strategy 3 Repair Strategy Service the PowerBook 200 Series computers through module exchange and parts replacement Customers can request on site service from an Apple Authorized Service Provider Plus AASP Apple Assurance US only or request a courier through the Apple Canada Technical Answerline Canada only They ca
3. Replace logic board Return computer to Apple N NOW BR W quip Troubleshooting Symptom Charts Video Continued 22 Video Continued Pixel is always white 1 PowerBook Duo 210 and 230 Replace display or always black 2 PowerBook Duo 250 and 280 If there are more than five voids pixels that are always white or two or more voids within one inch of each other replace display CPRC international repairers only or return computer to Apple 3 PowerBook Duo 270c and 280c color active matrix display only Replace display CPRC international repairers only or return computer to Apple m er Troubleshooting Audio and video present but external drive does not operate Symptom Charts External Floppy Drive 23 External Floppy Drive 1 Check floppy adapter to PowerBook connection 2 Try known good floppy disk 3 Check floppy drive cable connection 4 Replace floppy drive cable 5 Replace floppy adapter 6 Replace floppy drive 7 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Disk ejects while booting display shows Mac icon with blinking X Symptom Charts External Floppy Drive Continued 24 External Floppy Drive Continued Try kno
4. Display Switch CPU Stiffener Replacement Note Move the display switch cable and microphone cable forward before reinstalling the stiffener This will prevent them from being caught under the CPU stiffener and possibly damaged Replacement Note When replacing the CPU stiffener be sure to wrap the hard drive EMI shield around the outside of the stiffener lt gt CPU Stiffener 57 Display Actuator i Display Switch CPU Stiffener Replacement Note After reinstalling the CPU stiffener use the Duo battery contact alignment tool to check the alignment of the battery contacts 5 Ifyou are replacing a damaged CPU stiffener first remove the display switch and the display actuator Return the stiffener with the rear cover attached amp lt gt er Take Apart CPU Stiffener 58 Duo 210 230 250 270c Duo 280 280c Heatsin CPU Stiffener underside Replacement Note Replacement CPU stiffeners include the rear cover I O door and feet You can also replace separately the rear cover I O door and feet ui er Take Apart CPU Stiffener 59 Duo 210 230 250 270c Duo 280 280c Replacement Caution If you replace a CPU stiffener on a PowerBook Duo 210 230 250 or 270c make sure you install a small foam heatsink under the tabbed area of the stiffener Turn the stiffener upside down align the edges o
5. Introduction You can also find specifications information for this product in the Spec Database which you can access in one of three ways Launch it directly by double clicking the Apple Spec Database runtime alias at the top level of the Main Service Source CD Select Apple Spec Database from the Service Source drop down main menu Click the Acrobat toolbar icon for the database which is near the right end of the toolbar with the letters SP m er Specifications Processor 2 CPU 210 CPU 230 250 270c CPU 280 280c Coprocessor 270c Only Processor Motorola 68030 microprocessor 25 MHz Motorola 68030 microprocessor 33 MHz Motorola 68LCO40 microprocessor 66 33 MHz Motorola 68882 floating point coprocessor ui er Specifications Processor 3 Addressing 32 bit internal registers 32 bit address data bus supports 4 GB of address with justified 8 bit 16 bit and 32 bit data transactions m Memory 4 er Specifications RAM 210 230 250 RAM 270c RAM 280 280c ROM Memory 4 MB RAM soldered on the logic board Expandable to 24 MB Requires 70 ns or faster RAM chips 4 MB RAM soldered on the logic board Expandable to 32 MB Requires 70 ns or faster RAM chips 4 MB RAM soldered on the logic board Expandable to 40 MB Requires 70 ns or faster RAM chips 1 MB ui er Specifications Memory 5 PRAM 256 bytes of parameter memory Clock Cal
6. Safety 270c Case Bottom _ Logic Board Support ui er Take Apart Case Bottom 69 Replacement Note When replacing the case bottom on the PowerBook Duo 270c be sure to install the foam gaskets on the new case bottom Gently press the gaskets into the two slots next to the white logic board support 270c Case Bottom _ Logic Board Support quip er Take Apart Case Bottom 70 270c Case Bottom Logic Board Support Replacement Caution Do not install the foam gaskets when replacing the case bottom on the PowerBook Duo 210 230 250 280 or 280c The logic boards in these computers contain components that may be short circuited by the gaskets m er Take Apart Display Housing 71 Display Housing Display Housing Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the end clutch covers ui Display Housing 72 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Caution The display cable is fragile and should be handled with care Be particularly careful with the Duo 210 230 cable which does not have a protective copper coating and is more likely to tear ui Display Housing 73 Note The Duo 210 230 250 280 display housings are
7. replace keyboard cable Replace floppy adapter Replace keyboard Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Cursor does not move when you are using floppy adapter and mouse Symptom Charts Peripherals Continued 32 Peripherals Continued Check floppy adapter and mouse connections 2 Simultaneously press Command Control Power On keys to reset computer 3 Clean mouse ball and inside mouse 4 Replace mouse 5 Replace floppy adapter 6 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Known good serial printer does not print Symptom Charts Peripherals Continued 33 Peripherals Continued Verify that System is 7 1 or later Verify that Chooser and Control Panel settings are correct Check cables Replace printer interface cable Try known good printer Replace logic board aOounBKRWD Note When replacing the logic board check that the EMI clips are securely attach
8. some irregularity in screen brightness is normal Adjust contrast and brightness to diminish effect PowerBook Duo 210 230 Tighten loose display cable connectors Otherwise reaction is normal for FSTN screens at extreme cold or hot temperatures approximately under 5 or over 40 degrees centigrade ui er Troubleshooting Backlight does not operate Symptom Charts Video Continued 19 Video Continued PowerBook Duo 210 230 250 280 Check display cable connection Duo 210 230 Replace display Duo 250 280 Replace display CPRC Int l only Replace logic board Return computer to Apple a AUN quip er Troubleshooting Screen goes blank Symptom Charts Video Continued 20 Video Continued PowerBook Duo 270c 280c Check display cable connection Replace inverter board Replace display cable Replace display CPRC Int l only Replace logic board Return computer to Apple o014 00m 1 Press any key or press Wake Up key to wake computer from system sleep 2 Check display cable connection 3 Replace cracked cable connectors ui er Troubleshooting Screen flickers Symptom Charts Video Continued 21 Video Continued Some flickering is normal for grayscale displays Set display to 1 bit mode black and white in Monitors Control Panel Check display cable connection Duo 210 230 Replace display Duo 250 280 Replace display CPRC Int only
9. this procedure Note The PowerBook Duo Floppy Adapter attaches to the 152 pin docking connector and provides an external floppy drive HDI 20 port and an ADB port Replace defective floppy adapters by whole unit exchange ui Floppy Adapter 11 Release Button 2 Docking Port Floppy Adapter To install the floppy adapter raise the I O door and push the adapter firmly onto the external 152 pin docking port Make sure the floppy adapter release button is up To remove the adapter depress the release button and pull off the adapter m 250 Upgrade 12 Duo 250 Display Assembly Duo 250 Logic Board 250 Upgrade Before you begin do the following Disconnect the power adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the center clutch cover Remove the hard drive Remove the backup battery Remove the trackball assembly ui 250 Upgrade 13 e Remove the display assembly e Remove the CPU stiffener e Remove the logic board Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage Review the ESD precautions in Bulletins Safety ui 250 Upgrade 14 Note A PowerBook Duo 250 upgrade kit upgrades a PowerBook Duo 210 230 to a PowerBook Duo 250 The upgrade kit includes a PowerBook Duo 250 logic board display assembly and minimal accessory kit
10. 1 Using a T 8 torx driver remove the inverter board mounting screw ui 270c 280c Inverter Board 106 2 Carefully turn the inverter board so that it is component side up 3 Using an IC extractor IC Extracto disconnect the display Display Cable cable 4 Disconnect the inverter cable Replacement Note Be sure to reconnect the inverter cable before reconnecting the display cable Place the notched side of the inverter cable connector facing the inverter board Inverter Board ui 270c 280c Inverter Board 107 5 Disconnect the speaker cable 6 Lift the locking tab on the actuator cable connector and remove the cable Speaker SS 7 Lift out the inverter board Assembly Cable Inverter Board mp 270c 280c Actuator 108 270c 280c i Actuator Assembly 270c 280c Actuator Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the end clutch covers e Remove the center clutch cover e Remove the 270c 280c display housing quip 270c 280c Actuator 109 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Note The PowerBook Duo 270c and 280c active matrix display modules are available to CPRC and international repairers only ui 270c 280c
11. Actuator 110 Inverter Board 1 Remove the inverter board mounting screw lt gt 270c 280c Actuator 111 2 Carefully turn the IC Extractor inverter board so that it Display Cable is component side up Locking 3 Using an IC extractor disconnect the display cable 4 Lift the locking tab on the actuator connector Actuator Assembl and remove the actuator cable Inverter Board lt gt er Take Apart 270c 280c Actuator 112 5 Using a jeweler s screwdriver remove the actuator screw Lift out the actuator Actuator Asse 7 Lift out the actuator button cover m 270c 280c Speaker 113 270c 280c Speaker Before you begin do the following e Disconnect the power i adapter E 270c 280c Speaker e Remove the main battery g Assembly e Remove the end clutch covers e Remove the center clutch cover e Remove the 270c 280c display housing e Remove the 270c 280c actuator ui 270c 280c Speaker 114 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety ui er Take Apart 270c 280c Speaker 115 Note The PowerBook Duo 270c and 280c active matrix display modules are available to CPRC and international repairers only Speaker Assembly 1 Disconnect the speaker cable
12. Dsply Cable 83 Note The display cables for the Duo 210 230 250 and 280 systems are available to international and CPRC Display Assembly repairers only 1 Place the display assembly on a clean soft surface ui 210 230 250 280 Dsply Cable 84 Duo 210 230 Display Cable Display Cable Duo 280 Display Cable Note The Duo 210 230 250 and 280 display cables are different Make sure you replace the correct cable Note Because a Duo 250 may have been upgrade to a Duo 280 you cannot identify its configuration by the product label on the bezel To make sure you are working on a Duo 250 check that the display cable matches the Duo 250 cable pictured ui 210 230 250 280 Dsply Cable 85 Brightness Actuator Assembly Note The brightness actuator and the inverter board on the Duo 250 280 are each secured by tape Note the placement of the tape so that you can replace it in its original location Note To prevent the tape from curling after it s removed stick it firmly onto your work surface Duo 250 280 only 2 Hold down the brightness actuator and carefully remove the tape ui 210 230 250 280 Dsply Cable 86 Brightness Actuator Assembly Duo 250 280 only 3 Lift the brightness actuator from the bezel Replacement Note Make sure the brightness actuator cable is positioned underneath the display cable ui 210 230 250
13. Mounting Clip ui Rear Cover amp I O Door 121 er Take Apart Note Removing the keyboard case screws the end and center clutch covers and the two display mounting clips allows the top cover to separate slightly and enables you to pull off the rear cover 3 Push the rear corner of the top cover out slightly and pull out that corner of the rear cover Remove the rear cover ui Rear Cover amp I O Door 122 Metal Link 4 Unhook the metal link at one end of the I O door Remove the I O door and attached link from the rear cover m Service Source Upgrades PowerBook 200 Series m Modem 1 Modem Before you begin do the following Disconnect the power adapater Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the center clutch cover Remove the hard drive Remove the backup battery Remove the trackball assembly ui Modem 2 e Remove the display assembly e Remove the CPU stiffener e Remove the logic board ui Modem 3 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage Review the ESD precautions in Bulletins Safety Note The modem is an option for all systems in the PowerBook Duo series 1 Remove the modem cap from the rear cover 2 Disconnect the on off board ui Modem 4 Note The Apple
14. This forces the PowerBook Duo to reload the power manager code from the system software m er Troubleshooting RAM failure occurs eight tone error chord sequence sounds after startup chord Hardware failure occurs four tone error chord sequence sounds after startup chord Symptom Charts Startup 4 Symptom Charts Startup 1 Check RAM expansion card connection 2 Replace RAM expansion card 3 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener 1 Disconnect hard drive data cable and reboot system If startup sequence is normal reseat cable and retest 2 Replace hard drive 3 If the system is connected to an external floppy drive disconnect drive and reboot system If startup sequence is ui Troubleshooting Symptom Charts Startup Continued 5 normal reseat cable and retest Startup Continued 1 Replace floppy drive 2 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener m er Troubleshooting Screen is blank computer does not respond Sy
15. adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the backup battery lt p Trackball 23 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Caution PowerBook cables are fragile and easily torn or damaged Handle all cables with care ui Trackball 24 Remove the two self threading screws that secure the trackball assembly to the chassis Using an IC extractor disconnect the trackball cable Lift out the trackball assembly ui er Take Apart Trackball 25 Replacement Note When replacing the trackball assembly be sure to route the display switch cable and the backup battery cable around the trackball Trackball Display Switch mp Center Clutch Cover 26 Center Clutch Cover Center Clutch Cover Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers e Remove the top case ui Center Clutch Cover 27 Caution Removing the center clutch cover can exert unnecessary wear and tear on the display cable and plastics Remove the cover only if you are replacing the CPU stiffener display assembly or rear cover Caution When removin
16. beneath the EMI shield ui er Take Apart Hard Drive 17 3 Pull back the EMI shield and lift out the hard drive p Hard Drive lt gt er Take Apart Hard Drive 18 Note Remove the mounting brackets only if you are returning a defective drive to Apple Note On early production uc secure the mounting brackets to the hard drive Hard Drive n Cable dr T 4 Using a T 8 torx driver remove the four screws and the two mounting brackets from the hard drive 5 Disconnect the hard drive cable m Backup Battery 19 T SE Backup Battery Backup Battery Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers e Remove the top case ui Backup Battery 20 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Caution PowerBook cables are fragile and easily torn or damaged Handle all cables with care ui Backup Battery 21 1 Remove the backup battery from the trackball assembly 2 Carefully disconnect the backup battery cable from the logic board Trackball Assembly mp Trackball 22 UE oe EE Trackball Trackball Before you begin do the following Disconnect the power
17. from the inverter board 2 Using a jeweler s screwdriver remove the two speaker mounting screws 3 Remove the speaker retaining bar d Cable Inverter Board 4 Lift out the speaker m er Take Apart Feet 116 Feet Before you begin do the following e Disconnect the power adapter e Remove the main battery e Foot Foot __ quip er Take Apart Feet 117 1 Using a jeweler s screwdriver remove the caps from the left and right flip feet 2 Remove the two screws washers and flip feet from the rear cover 2 Foot Cap Gm Foot e a9 Rear Cover m Rear Cover amp I O Door 118 I O Door Rear Cover Rear Cover amp I O Door Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the feet e Remove the end clutch covers e Remove the center clutch cover quip Rear Cover amp I O Door 119 1 Close latch and turn over the computer Remove the three case screws that secure the keyboard to the bottom case Replacement Caution Don t overtighten the keyboard screws Overtightening could warp the keyboard and restrict key movement After replacing the screws always check the keys and space bar to make sure they work ui Rear Cover amp I O Door 120 2 Remove the two screws and the display mounting clips Display
18. modem includes the on off circuitry provided by the on off board After installing the modem card you may discard the on off board ui Modem 5 Modem Card 3 Holding the modem card by the edges connect it to the logic board m Memory Expansion 6 DRAM Expansion Card Memory Expansion Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the keyboard ui Memory Expansion 7 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage Review the ESD precautions in Bulletins Safety ui Memory Expansion 8 DRAM Expansion Holding the DRAM expansion card by the edges connect the card to the logic board Note To verify that the upgrade is successful check the Total Memory message for systems with virtual memory switched off or the Built in Memory message for systems with virtual memory switched on The memory size should be 4 MB of DRAM plus the amount of DRAM on the expansion card If the memory size is incorrect reseat the DRAM card ui Memory Expansion 9 If the memory size is still incorrect replace the DRAM expansion card If the memory size is still incorrect contact Apple Technical Support m Floppy Adapter 10 Docking Port Floppy Adapter Floppy Adapter No preliminary steps are required before you begin
19. to these computers For pricing information refer to Service Price Pages Canada Only The PowerBook 200 Series computers are covered under first year AppleCare The Extended AppleCare Service Plan is also available for these products Service Providers are reimbursed for first year warranty and Extended AppleCare repairs made to these computers For pricing information refer to Service Price Pages m er Basics Self Threading Screws 7 Machine Screw Self Threading Screw Self Threading Screws Caution Improperly installed self threading screws could damage the PowerBook Duo Thread the screws properly and do not overtighten them Caution To prevent damage to the circuitry do not use magnetic screwdrivers when working on Apple systems ui Self Threading Screws 8 The PowerBook 200 systems use both machine screws and self threading screws Be aware when you are replacing a self threading screw and follow these guidelines e Never overtighten self threading screws e Before tightening a self threading screw back the screw off slightly to be sure it is threaded properly ui Self Threading Screws 9 Self threading screws are used to install the following modules and replacement parts e Hard drive e Trackball assembly e CPU stiffener and logic board m Service Source Specifications PowerBook 200 Series n Introduction 1
20. topics for removing the Duo 270c 280c display assembly Note The PowerBook Duo 250 270c 280 and 280c display assemblies are available to CPRC and international repairers only ui Display Assembly 41 Caution PowerBook cables are fragile and easily torn or damaged Handle all cables with care ui er Take Apart Display Assembly 42 1 Using an IC extractor disconnect the display Displa and cable Cable 2 Using a jeweler s screwdriver pry the display cable ferrite bead off the CPU stiffener Replacement Note When attaching the ferrite bead to the CPU stiffener of the Duo 210 230 use the adhesive tape available in the Clutch Cover Kit or a piece of two sided tape Display Cable Connector ui er Take Apart Display Assembly 43 3 Remove the two screws and the display mounting clips Display Mounting Mounting Clip ui Display Assembly 44 4 Gently lift the display legs out of the holes in the stiffener and remove the display assembly Display Legs lt p Display Assembly 45 Replacement Note Before reattaching the display assembly to a PowerBook Duo install the center clutch cover Lon Bar d Display Cable ui Display Assembly 46 Center Clutch s Cover sun Bar Display Cable Place the display assembly face down with the display cable freely hanging over the e
21. with care Refer to Center Clutch Cover in Take Apart 5 Remove the display from the PowerBook Duo 200 CPU stiffener and install it on the upgraded unit ui ol Upgrades 2300 Series Upgrade 38 Power Book Note There are two display 270 280 280c connectors on the Power Display Book 2300c logic board 6 Connect the display cable to the appropriate connector on the logic 3 board a TFT Display Connector If upgrading a 270c em 280 or 280c connect the display cable to the TFT connector J7 Logic Board PowerBook z70e 280 280c Heatsink Display Cable 3 Upgrades iode Heatsink PowerBook 210 230 250 Display PowerBook 210 2307250 Display Cable FSTM Display Connector J6 2300 Series Upgrade 39 If upgrading a 210 230 or 250 carefully bend back the pliable heatsink to connect the display cable to the FSTN connector J6 Replacement Note On an upgraded 210 230 or 250 unit bend the heatsink back into place so that it lies flat e Upgrades 2300 Series Upgrade 40 E 7 Assemble the rest of the PowerBook 200 Upgraded unit See Trackball to PowerBook 2300c Backup Battery Top Case End Clutch Covers and Key board in Take Apart 8 Adhere the PowerPC name label to the bezel 9 Perform a clean installation of the Macintosh PowerBook 2300 Series System Software 2300 Series Upgrade 41 10 If the unit has an Apple Exp
22. 00K of system RAM Built in support for internal modem when in docking systems Enables connection between PowerBook Duo computer and desktop Macintosh Duo system appears as a hard drive on desktop Requires Duo MiniDock m Service Source Troubleshooting PowerBook 200 Series m er Troubleshooting General 2 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product Because cures are listed on the charts in the order of most likely solution try the first cure first Verify whether or not the product continues to exhibit the symptom If the symptom persists try the next cure Note If you have replaced a module reinstall the original module before you proceed to the next cure If you are not sure what the problem is or if the Symptom Charts do not resolve the problem refer to the Flowchart for the product family For additional assistance contact Apple Technical Support ui o Troubleshooting Power Manager Reset 3 Power Manager Reset If a unit crashes or experiences power problems reset the power manager chip by pressing the rear power switch for 30 45 seconds If resetting the power manager chip does not solve the problem reset the code for the power manager chip by removing all power sources and letting the unit sit for 10 minutes Take out the battery and disconnect the AC adapter and the internal backup battery
23. 1 0n ui er Troubleshooting Symptom Charts Video Continued 15 Video Continued PowerBook Duo 270c 280c Adjust screen contrast Check logic board cable connections Replace inverter board Replace display cable Replace display CPRC Int l only Replace logic board Return computer to Apple NOM BRWD quip er Troubleshooting No display but computer appears to operate correctly Symptom Charts Video Continued 16 Video Continued PowerBook Duo 210 230 250 280 1 2 3 4 5 6 7 Adjust screen contrast Check logic board cable connections Connect power adapter Duo 210 230 Replace display Duo 250 280 Replace display CPRC Int only Replace logic board Return computer to Apple quip er Troubleshooting Rainbow colors visible from extreme viewing angles Symptom Charts Video Continued 17 Video Continued PowerBook Duo 270c 280c Adjust screen contrast Check logic board cable connections Connect power adapter Replace inverter board Replace display cable Replace display CPRC Int only Replace logic board Return computer to Apple CONOUKRWDH PowerBook Duo 210 230 Such colors are normal for FSTN screens ui er Troubleshooting Screen brightness is not uniform Display stopped working or dimmed but is fine now Symptom Charts Video Continued 18 Video Continued PowerBook Duo 210 230 For FSTN screens
24. 2 Interlocking Tabs Caution The top case is secured to the chassis by a snap at the left corner of the case and by four interlocking tabs along the front Failure to unlock the four interlocking case tabs could damage the top case 1 Raise the bottom left corner of the top case and release the case snap 2 Slide the top case off the four interlocking tabs ui er Take Apart Top Case 13 3 Remove the two rubber bumpers from the chassis Replace the rubber bumpers with the notched ends aligned as shown Notch Rubber Bumper Rubber Bumper Notch m Hard Drive 14 Hard Drive Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers e Remove the top case ui Hard Drive 15 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Caution PowerBook cables are fragile and easily torn or damaged Handle all cables with care ui Hard Drive 16 Hard Drive Cable 1 Remove the three self threading screws that secure the hard drive to the CPU stiffener 2 Using an IC extractor disconnect the hard drive cable Replacement Note Before replacing the hard drive mounting screws place the hard drive cable
25. 23 Display Assembly Side Latch Side Latch Turn the display assembly over and place it on a clean soft surface Insert a jeweler s screwdriver midway along the left side of the display and release the interior side latch Repeat this procedure along the right side ui 280 280c Upgrade 24 Caution To avoid misaligning the display layers remove the display housing very carefully 5 Push the display housing forward and remove it ui 280 280c Upgrade 25 M us To avoid losing the latch spring release the latch mechanism Carefully lift the brightness actuator assembly from the bezel Hold down the hinge mechanism on the torsion bar Using a torx screwdriver remove the ground screw for the display cable Slowly release the torsion bar ui 280 280c Upgrade 26 10 Using a jeweler s 11 screwdriver push out the release tabs on the display cable and disconnect the cable Unwind the display cable from the torsion bar and remove the cable ui er Upgrades 280 280c Upgrade 27 12 Before installing the new display cable gently roll the cable so it can be wrapped around the torsion bar Note The 280 280c display cable is slightly longer than the 250 display cable from the screw hole beyond Do not tape or screw down this additional Additional Length on length leave it loose 280 280c 280 280c Display Dis
26. 280 Dsply Cable 87 Inverter Board ul e Replacement Note Check the seating of the brightness actuator If it is not firmly seated the proper contact will not be made Caution Be careful not to accidentally peel off any of the protective tape that covers the 250 280 inverter board Removal could cause the inverter board to short ui 210 230 250 280 Dsply Cable 88 Duo 250 280 only 4 While holding down the display cable carefully remove the tape from the left side of the inverter board Let go of the display cable Duo 250 280 only 5 Remove the tape from the right side of the inverter board Replacement Note Before reattaching the inverter board tape push the backlight bulb cable white into its channel ui er Take Apart 210 230 250 280 Dsply Cable 89 Replacement Note If the inverter board became loose when you removed the tape snap the board back into the two front tabs on the bezel ui 210 230 250 280 Dsply Cable 90 SG Bar Duo 250 280 only 6 Hold down the hinge mechanism on the torsion bar Using a torx screwdriver remove the ground screw for the display cable Replacement Caution Do not overtighten the ground screw or you may tear the replacement display cable Duo 250 280 only 7 Slowly release the torsion bar lt p er Take Apart 210 230 250 280 Dsply Cable 91 8 Using a jeweler s scre
27. CCFL on demand backlight Adjustable brightness and contrast controls ui Sound and Video 10 er Specifications Video Display 250 Video Display 270c Video Display 280 9 in 229 mm diagonal screen Flat panel color active matrix liquid crystal display CCFL on demand backlight 640 lines by 400 pixels 16 shades of gray 9 in 229 mm diagonal screen Flat panel color active matrix liquid crystal display CCFL on demand backlight 640 lines by 480 pixels 8 bits 256 colors 9 in 229 mm diagonal screen Backlit active matrix grayscale display 640 lines by 400 pixels 16 shades of gray ui er Specifications Sound and Video 11 Video Display 280c 8 4 in diagonal backlit active matrix color display 640 lines by 480 pixels for 256 colors or 640 lines by 400 pixels for thousands of colors m er Specifications Electrical 12 Main Battery 210 230 Main Battery 250 270c Electrical NiMH nickel metal hydride 0 95 Ah Approximately 2 4 hours of usage before recharging depending upon use Recharge time approximately 2 hours 500 power cycles capacity NiMH nickel metal hydride 1 5 Ah Approximately 2 3 hours of usage before recharging depending upon use Recharge time approximately 2 hours 500 power cycles capacity Uses 4 5 A size battery cells ui er Specifications Electrical 13 Main Battery 280 280c PRAM Battery Power Adapte
28. Modem Continued 41 Internal Modem Continued 1 If computer is in sleep mode verify that Answer calls is selected in PowerBook Control Panel 2 Check phone cord connection and operation 3 Replace modem card 4 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui Troubleshooting Symptom Charts Internal Modem Continued 42 Internal Modem Continued Modem has no sound 1 Verify that Control Panel volume setting is 1 or above output 2 Replace modem card 3 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener Modem connects but 1 Verify that remote modem needs error correction error does not communicate correction is internal modem default with remote modem 2 Type AT amp QO to disable error correction m Symptom Charts Miscellaneous 43 er Troubleshooting Screen goes blank and computer shuts down every few minutes Application seems to run slower after few seconds Hard drive is slow to respond or screen goes blank too often Miscellaneous Ad
29. Upgrade Kit Caution The display cable is fragile and should be handled with care Note The PowerBook Duo 2300 upgrade kit upgrades a PowerBook Duo 210 230 250 270c 280 or 280c to a PowerBook Duo 2300c logic board This upgrade which uses a PowerPC 603e microprocessor includes a PowerBook Duo 2300c case bottom logic board CPU stiffener assembly It also includes a power adapter PowerPC name plate Macintosh PowerBook 2300 ui 2300 Series Upgrade 33 Series system software and miscellaneous parts end and center clutch covers and display screw covers A trackpad is not included in this upgrade ui 2300 Series Upgrade 34 Microphone Cable PowerBook Duo 2300c Logic Board Optional RAM Card On Off Board Cor Modern To assemble the upgraded unit 1 Remove the CPU stiffener from the PowerBook Duo 2300c case bottom logic board CPU stiffener assembly 2 Lift out the logic board and install the microphone cable on off board or modem and optional RAM card quip ej Upgrades 2300 Series Upgrade 35 3 Reinstall the logic board and CPU stiffener ui all Upgrades 2300 Series Upgrade 36 4 Install the SCSI hard SCSI drive and connect the Connector hard drive cable to the SCSI connector on the logic board Hard Drive E 7 Cable LOSS EMT Hard Drive 2300 Series Upgrade 37 Caution The following step should be performed
30. attery e Remove the keyboard e Remove the end clutch Duo 280 280c covers Upgrade Kit e Remove the top case e Remove the center clutch cover e Remove the hard drive e Remove the backup battery e Remove the trackball assembly ui 280 280c Upgrade 20 e Remove the display assembly e Remove the CPU stiffener e Remove the logic board Caution The display cable is fragile and should be handled with care Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage Review the ESD precautions in Bulletins Safety ui 280 280c Upgrade 21 Case Bottom CPU Stiffener and Logic Board Assembly Note A PowerBook Duo 280 280c upgrade kit upgrades a PowerBook Duo 250 to a 280 or a PowerBook Duo 270c to a 280c The upgrade kit includes a PowerBook Duo 280 case bottom with new label logic board CPU stiffener assembly In addition it includes a display cable Type 3 battery 36 W power adapter and miscellaneous parts ui er Upgrades 280 280c Upgrade 22 Screw Cover F Screw E PowerBook Duo 250 Display Assembly Note The new display cable is required in the PowerBook Duo 250 only Do not use this cable in a PowerBook Duo 270c Upgrading a Duo 250 1 Place the PowerBook Duo 250 display assembly with the bezel face up 2 Remove the screw covers and screws from the bezel ui 280 280c Upgrade
31. available to international and CPRC repairers only The Duo 270c 280c display housing kits which are available to all repairers include the housing and the bezel ui Display Housing 74 Screw Cover and Mounting Screw Note The display housing is secured to the bezel by mounting screws 1 Remove the two screw covers from the bezel Using a T 6 torx driver remove the mounting screws Replacement Caution Do not overtighten the mounting screws or you will damage the screw inserts on the display housing ui Display Housing 75 Replacement Note The screw covers are disposable If they no longer stick replace them ui Display Housing 76 Side um Latch Tab al 2 Close the display Note The display housing is also secured to the bezel by side latches and front tabs 3 Pull the display housing up and disengage the side latches Gently slide the housing forward to disengage the four front tabs Caution To avoid misaligning the display layers remove the display housing very carefully ui Display Housing 77 Caution Avoid touching the copper surface of the Duo 250 280 housing When touched the surface flakes or peels which could cause the system to short 4 Remove the display housing ui Display Housing 78 Display Housing Replacement Caution Carefully engage the four tabs along the front of the hou
32. charger Type 2 or Type 3 batteries will not charge ui Battery Recharger 4 You can charge Type 1 Type 2 or Type 3 batteries in a Type 2 battery re charger However the first time only that you charge a Type 3 battery in a Type 2 recharger the recharger must be connected to a Duo with Type III Battery in the Extension folder If you fail to do this the Type 3 battery will not charge ui Battery Recharger 5 To identify types of battery rechargers check the bottom of the recharger A Type 1 recharger is imprinted with Macintosh PowerBook Duo Battery Recharger A Type 2 recharger is imprinted with PowerBook Duo Battery Recharger m Battery Handling 6 L_ Main Battery Battery Handling No preliminary steps are required before you begin this procedure Note The PowerBook Duo main battery is a nickel metal hydride NiMH battery To extend its longevity follow the instructions below ui Battery Handling 7 A Warning Return undamaged dead NiMH batteries to Apple do not discard dead batteries with other waste If the battery is damaged do not return it to Apple Dispose of damaged batteries according to local ordinances Review battery handling and disposal instructions in Bulletins Safety ui Battery Handling 8 Note To identify types of batteries check the bottom of the battery Type 3 batteries include the desc
33. ck the EMI shield from the display 8 Using an IC extractor disconnect the display cable connector from the display driver board 9 Gently remove the Y section of the display cable from the metal display frame Display Cable Connector ui er Take Apart 270c 280c Display Cable 101 Replacement Note The display cable is attached to the metal display frame with adhesive Re adhere the cable to prevent it from rubbing against the display and becoming worn ui er Take Apart 270c 280c Display Cable 102 Note Note the folds and roll in the display cable so you can duplicate them on the replacement cable 10 Lift off the display cable Display Cable m 270c 280c Inverter Board 103 270c 280c Inverter Board 270c 280c Inverter Board Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the end clutch covers e Remove the center clutch cover e Remove the 270c 280c display housing quip 270c 280c Inverter Board 104 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Note The PowerBook Duo 270c and 280c active matrix display modules are available to CPRC and international repairers only ui 270c 280c Inverter Board 105 Inverter Board
34. d charged main battery 4 Try known good power adapter 5 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Computer runs when plugged into wall outlet but not when using battery power battery voltage is within tolerance Symptom Charts Power Continued 9 Power Continued 1 Replace main battery 2 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting System powers off unexpectedly system errors occur Or system hangs up Symptoms usually occur in these situations Keyboard is used while PowerBook Duo flip feet are down PowerBook Duo is inserted in Duo Dock or PowerBook Duo is attached to MiniDock Symptom Charts Power Continued 10 Power Continued Make sure that the logic board mounting screw that also serves as a battery contact is installed Screw should be installed on contact located on right side quip Troubleshooting Symptom Charts Power Continued 11 Power Continued System p
35. dge of a counter Pull the display cable until it s snug on the torsion bar With your other hand turn the center clutch cover so the opening faces downward and then carefully slide it onto the torsion bar Insert the display assembly legs into the holes in the stiffener and close the cover ui Display Assembly 47 For added support raise the 1 0 door before snapping the center clutch cover into place Bottom Center Clutch m Case Cover ui Display Assembly 48 Mounting Clip Display Latch Replacement Note When you reassemble the unit ensure that the display latch is positioned correctly Place the display assembly legs into the holes in the CPU stiffener and close the PowerBook Duo With the front of the unit facing you push the display assembly to the left so that it aligns with the top case and latch mechanism Fasten the display mounting clips and slide the end clutch covers on ui Display Assembly 49 Note You do not have to open the PowerBook Duo to fasten the mounting clips m CPU Stiffener 50 CPU Stiffener 1 CPU Stiffener Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers e Remove the top case e Remove the center clutch cover e Remove the hard drive ui CPU Stiffener 51 e Remove the backup batter
36. ed to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Known good networked printer does not print Symptom Charts Peripherals Continued 34 Peripherals Continued Verify that System is 7 1 or later Verify that Chooser and Control Panel settings are correct Check cables Replace printer interface cable Try known good printer If printer works troubleshoot network 6 Replace logic board a AUN Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener quip er Troubleshooting Device connected to mini DIN 8 port does not work Symptom Charts Peripherals Continued 35 Peripherals Continued 1 mn BWP Verify that External Modem is selected in PowerBook Control Panel Verify that System is 7 1 or later Check cables Test device with known good computer Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener quip Troubleshooting S
37. en the two battery contact screws and two CPU stiffener mounting screws spl 3 Slide the tool back in and press it against the sides of the contacts 4 Retighten all screws ui Align Battery Contacts 18 Note The soldered center leads 2 3 and 4 were already aligned by Apple If any of the center contacts becomes misaligned install a new logic board and return the old one to Apple m Battery Verification 19 L_ Main Battery Battery Verification Before you begin remove the main battery Note The battery desk accessory is a general indicator of the battery charge Use a voltmeter to determine the actual charge A Warning Return ui Battery Verification 20 undamaged dead Ni Hy batteries to Apple do not discard dead batteries with other waste If the battery is damaged do not return it to Apple Dispose of damaged batteries according to local ordinances Review battery handling and disposal instructions in Bulletins Safety ui Battery Verification 21 Positive Probe L Negative Probe Set a voltmeter to the 20 volts DC scale Touch the positive probe of the voltmeter to the positive terminal and the negative probe to the negative terminal If the reading is not 12 volts recharge the battery If the reading remains below 6 volts replace the battery m AC Adapter Verification 22 AC Adapter Verification No
38. endar CMOS custom chip supported by long life up to 2 years lithium battery m er Specifications Disk Storage 6 Disk Storage Floppy Drive External 1 4 MB floppy drive same drive is used with PowerBook 100 Requires Duo Floppy Adapter or Duo MiniDock Hard Drive 2 5 in internal 17 mm high m er Specifications 1 0 Interfaces 7 I O Interfaces Docking Connector 152 pin processor direct slot PDS connector for attaching expansion devices 32 bit expansion bus Serial RS 422 serial port mini DIN 8 connector Modem Optional internal modem telephone jack RJ 11 domestic mini DIN 8 international m er Specifications I O Devices 8 I O Devices Keyboard Built in standard Apple keyboard 63 keys domestic 64 keys ISO Caps locked LED Soft power on switch 2 5 mm travel 18 mm vertical and horizontal pitch Two level tilt adjustment Trackball 19 mm diameter dua button Apple Desktop Bus ADB interface Microphone Built in electret omnidirectional microphone m er Specifications Sound and Video 9 Sound Generator Video Display 210 230 Sound and Video Apple sound chip provides four voice 8 bit sound sampled at 11 or 22 kHz Monophonic sound in and sound out 9 in 229 mm diagonal screen Flat panel film compensated supertwist nematic FSTN liquid crystal display 1 2 and 4 bits per pixel 16 level grayscale at 4 bits per pixel 640 lines by 400 pixels
39. f the heatsink with the lower right corner of the tab and press the heatsink on ui er Take Apart CPU Stiffener 60 Duo 210 230 250 270c Duo 280 280c If you replace a CPU stiffener on a PowerBook Duo 280 or 280c make sure you install a large foam heatsink under the tabbed area of the stiffener Turn the stiffener upside down and install the heatsink on the entire tab Failure to install the correct heatsink could cause a short circuit and blow out the logic board mp Logic Board 61 Logic Board m Logic Board Before you begin do the following Disconnect the power adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the hard drive Remove the backup battery Remove the trackball Remove the display assembly amp CPU Stiffene ui Logic Board 62 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety ui er Take Apart Logic Board 63 1 Remove the remaining logic board mounting screw Logic ci Pose i Replacement Caution This crew Battery mounting screw is also a Contact i Docking Connector battery contact one of two If you fail to reinstall it the battery may not charge 2 Raise the side of the logic board opposite the 152 pin doc
40. g the center clutch cover be careful not to tear the fragile display cable located beneath the clutch cover ui Center Clutch Cover 28 Note The center clutch cover is disposable If you break or cosmetically damage the cover replace it ui Center Clutch Cover 29 Center Clutch Cover Using a jeweler s screwdriver pry up the left side and then the right side of the center clutch cover Carefully pull up the cover and remove it from the display ui Center Clutch Cover 30 Display Leg Assembly Center Clutch Te _ Cover Torsion Bar Display Cable Replacement Note for display assembly only Before reattaching the display assembly to a PowerBook Duo install the center clutch cover Place the display assembly face down with the display cable freely hanging over the edge of a counter Pull the display cable until it s snug on the torsion bar With your other hand turn the center clutch cover so the opening faces downward and then carefully slide it onto the torsion bar lt gt Center Clutch Cover 31 Center Clutch Cover Bottom Case Insert the display assembly legs into the holes in the stiffener and close the cover For added support raise the 1 0 door before snapping the center clutch cover into place m Display Assembly and CPU Stiffener 32 CPU Stiffener 5 Display Assembly and CPU Stiffene
41. it the battery terminals Keep the battery in a cool dark place do not store it for longer than 6 ui ej Additional Procedures Battery Handling 13 months without recharging ui Align Battery Contacts 14 Align Battery Contacts Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers e Remove the top case ui Align Battery Contacts 15 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage Review the ESD precautions in Bulletins Safety ui Align Battery Contacts 16 Battery Duo Battery Bay Contact Alignment Tool PB Duo Battery Contact Alignment Tool CD Note Perform the battery contact alignment procedure when you replace a PowerBook Duo logic board or when a known good battery has power problems Use the Duo battery contact alignment tool to align the two outer battery contacts so they are perpendicular to the edge of the logic board 1 Slide the Duo battery contact alignment tool into the battery bay quip er Additional Procedures Align Battery Contacts 17 Note If leads 1 or 5 flex or offer resistance to the alignment tool perform the following steps If there is no resistance the contacts are aligned Stiffener Mounting Screws 2 Slide the alignment tool out of the battery bay and loos
42. just Battery Conservation setting in Control Panel or connect power adapter 1 Adjust Battery Conservation Options setting in Control Panel or connect power adapter 2 Connect power adapter Adjust Battery Conservation setting in Control Panel or connect power adapter ui er Troubleshooting No sound from speaker Symptom Charts Miscellaneous Continued 44 Miscellaneous Continued PowerBook Duo 210 230 250 280 Verify that Control Panel volume setting is 1 or above Check display cable connection Duo 210 230 Replace display Duo 250 280 Replace display CPRC Int Only Replace logic board a AUN quip Troubleshooting Symptom Charts Miscellaneous Continued 45 Miscellaneous Continued PowerBook Duo 270c 280c 1 Verify that Control Panel volume setting is 1 or above 2 Check display cable connection 3 Replace display cable 4 Replace speaker assembly 5 Replace logic board 6 Return computer to Apple Red light on battery Replace Type 1 recharger with Type 2 recharger Or replace recharger battery Type 2 or Type 3 battery with Type 1 battery won t charge Note Use only Type 1 batteries in a Type 1 battery recharger Type 2 or Type 3 batteries will not charge You can charge Type 1 Type 2 or Type 3 batteries in a Type 2 battery recharger m Service Source Take Apart PowerBook 200 Series n Main Battery 1 Main Battery Before you begi
43. king connector Slide the docking connector out of the bottom case and remove the logic board lt gt er Take Apart Logic Board 64 3 Carefully disconnect the microphone cable from the logic board 4 Disconnect the on off board or modem board if installed 5 Disconnect the DRAM expansion card if installed On Off Board Microphone Cable s DRAM Expansion Card Replacement Note When replacing the logic board keep in mind that the PowerBook Duo won t work unless an on off board or a modem card is connected to the logic board ui Logic Board 65 Replacement Note If you are returning the logic board for repair set aside the microphone on off board and expansion card if installed Reinstall these parts on the replacement board m Case Bottom 66 Case Bottom Case Bottom Before you begin do the following Disconnect the power adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the hard drive Remove the backup battery lt p Case Bottom 67 e Remove the trackball e Remove the display assembly amp CPU Stiffener e Remove the logic board ui er Take Apart Case Bottom 68 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins
44. mptom Charts Power 6 Power 1 Simultaneously press Command Control Power On keys to reset computer Connect power adapter and reboot computer in 3 4 minutes Try known good charged main battery Check all logic board cable connections Replace logic board a AUN Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener quip er Troubleshooting After you remove main battery some Control Panel settings are different Power adapter is plugged in but battery DA does not indicate charger is connected Symptom Charts Power Continued 7 Power Continued Replace backup battery This is normal for fully charged battery Check power adapter connection Try known good charged main battery Try known good power adapter Replace logic board a AUN Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Symptom Charts Power Continued 8 Power Continued Low power warning appears 1 Recharge battery or attach power adapter 2 Remove external devices 3 Try known goo
45. n disconnect the power adapter Caution If you fail to disconnect the power adapter and remove the main battery before attempting take apart procedures you could short out the logic board 1 Depress the release button and slide open the battery door 2 Pull out the main battery m Keyboard 2 Keyboard Before you begin do the following e Disconnect the power adapter e Remove the main battery Note The following tools are required to disassemble a PowerBook Duo system e T 8 torx driver e T 10 torx driver e IC extractor e Jeweler s flat blade screwdriver e Duo battery contact alignment tool Keyboard lt p Keyboard 3 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Caution PowerBook Duo cables are fragile and easily torn or damaged Handle all cables with care ui Keyboard 4 Note If you are removing the keyboard only you do not need to remove the case screw nearest the front of the unit 1 Close latch and turn over the computer Remove the four case screws from the bottom of the computer ui Keyboard 5 Replacement Caution Don t overtighten the keyboard screws Overtightening them could warp the keyboard and restrict key movement After replacing the screws always check the ke
46. n also choose carry in service from an AASP Ordering Apple Service Providers planning to support the computer systems covered in this manual may purchase Service modules and parts to develop servicing capability To order parts use the AppleOrder US only or ARIS Canada only system and refer to Service Price Pages ui Repair Strategy 4 Large businesses universities and K 12 accounts must provide a purchase order on all transactions including orders placed through the AppleOrder US only or ARIS Canada only system USA Ordering US Service Providers not enrolled in AppleOrder may fax their orders to Service Provider Support 512 908 8125 or mail them to Apple Computer Inc Service Provider Support MS 212 SPS Austin TX 78714 9125 For US inquiries please call Service Provider Support at 800 919 2775 and select option 1 ui Repair Strategy 5 Canadian Ordering Canadian Service Providers not enrolled in ARIS may fax their orders to Service Provider Support in Canada 1 800 903 5284 For Canadian inquiries please call Service Provider Support at 905 513 5782 and select option 3 m Warranty AppleCare ARIS 6 Warranty AppleCare ARIS US Only The PowerBook 200 Series computers are covered under the Apple One Year Limited Warranty The AppleCare Service Plan is also available for these products Service Providers are reimbursed for warranty and AppleCare repairs made
47. oppy adapter 5 Replace floppy drive Read write copy Try known good floppy disk error Check floppy drive cable connection Replace floppy drive cable Replace floppy adapter Replace floppy drive a AUN m o Troubleshooting Symptom Charts Hard Drive 27 Internal hard drive does not operate Hard Drive 1 Check internal hard drive cable connection 2 Replace internal hard drive cable 3 Run Macintosh Hard Disk Test 4 Use HD SC Setup to reinitialize drive 5 Replace internal hard drive 6 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener m er Troubleshooting Cursor does not move when you are using trackball Symptom Charts Peripherals 28 Peripherals 1 4 5 6 Simultaneously press Command Control Power On keys to reset computer Clean ball and rollers of trackball Make sure display switch cable and battery cable are not impeding trackball Check logic board cable connections Replace trackball Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace
48. owers down 1 Make sure battery is good battery unexpectedly won t 2 Use Duo battery contact alignment tool to check alignment of boot off battery or battery contacts If contacts are out of alignment use tool to powers down realign them intermittently when running off battery Or battery won t charge m er Troubleshooting Row or partial row of pixels never comes on or is always on Symptom Charts Video 12 Video PowerBook Duo 210 230 1 2 3 4 Check display cable connection Replace display Replace logic board Return computer to Apple PowerBook Duo 270c 280c O OND WM Check display cable connection Replace display cable Replace display CPRC Int only Replace logic board Return computer to Apple quip er Troubleshooting Symptom Charts Video Continued 13 Video Continued Thin white line is PowerBook Duo 210 230 always on at middle of 1 Adjust screen contrast screen 2 For FSTN screens a thin white line is normal PowerBook Duo 250 3 Adjust screen contrast 4 Replace display CPRC Int only or return computer to Apple ui er Troubleshooting Display is very light or totally white Symptom Charts Video Continued 14 Video Continued PowerBook Duo 210 230 250 280 Adjust screen contrast Check logic board cable connections Duo 210 230 Replace display Duo 250 280 Replace display CPRC Int only Replace logic board o
49. play Cable Cable ui 280 280c Upgrade 28 er Upgrades Release Tabs 13 Install the new display cable by wrapping it around the torsion bar Connect the cable and push in the release tabs 14 Reassemble the display ui 280 280c Upgrade 29 Upgrading a Duo 250 or 270c 1 Install the original trackball assembly backup battery and hard drive on the PowerBook Duo 280 280c case bottom CPU stiffener logic board assembly see Trackball Assembly Backup Battery and Hard Drive in Take Apart Reassemble the rest of the unit m 3 Upgrades e PowerBook Duo 2300 Upgrade 2300 Series Upgrade 30 2300 Series Upgrade Before you begin do the following to disassemble the PowerBook Duo 200 being upgraded e Disconnect the power adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers e Remove the top case e Remove the hard drive e Remove the backup battery 2300 Series Upgrade 31 e Remove the trackball e Remove the display CPU stiffener assembly e Remove the logic board e Remove the microphone cable on off board or modem and optional RAM from the logic board Caution The PowerBook Duo contains CSMOS devices that are very susceptible to ESD damage Review the ESD precautions in Bulletins Safety ui ej Upgrades 2300 Series Upgrade 32 Components of PowerBook Duo 2300
50. preliminary steps are required before you begin this procedure 1 Plug in the AC adapter to a wall socket 2 Connect the AC adapter plug to the PowerBook 3 Set a voltmeter to the 200 volts DC scale LR Adapter Plug E ui er Additional Procedures AC Adapter Verification 23 4 Touch the negative voltmeter probe to the contact nearest the power plug and the positive probe to the contact second nearest the power plug If the reading is not 24 25 volts replace the adapter Positive Probe ui er Additional Procedures AC Adapter Verification 24 5 Also check the AC adapter under load Switch on the PowerBook and repeat the voltmeter check If the reading drops more than 1 2 volts replace theq adapter m Service Source Exploded View PowerBook 200 Series m Exploded View PowerBook Duo 200 Series Display Refer to Service Parts Database Screw Covers 922 2029 Tee Keyboard 661 1652 Clutch Cover Kit 9670003 RAM Cards 661 1659 4 MB 661 1658 8 MB a Top Case 620 0045 210 230 250 270c pis Pride 922 0792 PB280 661 1298 922 0793 PB280c Logic Board 661 1653 PB 210 230 250 270c 661 1672 PB 230 250 661 1717 PB 270c 661 0051 PB 280 280c CPU Stiffener 922 0433 210 230 250 only 076 0339 Trackball Assembly 661 1654 Battery with Door Bottom Case 661 0053 T
51. r Before you begin do the following Disconnect the power adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the hard drive Remove the backup battery Remove the trackball ui Display Assembly and CPU Stiffener 33 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety Caution PowerBook Duo cables are fragile and easily torn or damaged Handle all cables with care ui Display Assembly and CPU Stiffener 34 Important Follow this procedure only when removing the logic board and case bottom In all other cases remove the display assembly and CPU stiffener separately 1 Using a jeweler s screwdriver carefully disconnect the display switch cable Replacement Note Route the display switch cable and the backup battery cable around the trackball lt p Display Assembly and CPU Stiffener 35 2 Using an IC extractor disconnect the display cable 3 Remove the microphone from the CPU stiffener ui er Take Apart Display Assembly and CPU Stiffener 36 4 Remove the three mounting screws that secure the CPU stiffener to the bottom case Replacement Note The left most CPU stiffener mounting screw is also a battery contact If you fail to reinstall this screw the bat
52. r NiMH nickel metal hydride 1 6 Ah Approximately 2 3 hours of usage before recharging depending upon use Recharge time approximately 2 hours 500 power cycles capacity 3 V lithium backup battery 500 power cycles capacity Input 85 270 VAC line voltage 47 63 Hz Output 24 VDC 1 04 A Can be used anywhere in the world with the appropriate power cord m er Specifications Physical 14 Dimensions 210 230 250 280 Dimensions 270c 280c Weight 210 230 250 280 Weight 270c 280c Physical Height 1 4 in 36 mm Width 8 5 in 216 mm Depth 10 9 in 277 mm Height 1 5 in 36 mm Width 8 5 in 216 mm Depth 10 9 in 277 mm 4 25 lb 1 9 kg with battery 4 8 Ib 2 1 kg with battery n er Specifications Environmental 15 Operating Temperature Storage Temperature Relative Humidity Operating Altitude Environmental 50 104 F 10 40 C 40 to 116 F 40 to 47 C 20 9596 noncondensing 0 15 000 ft 0 4722 m m er Specifications Other 16 Express Modem SCSI Disk Adapter Other Internal 14 400 baud modem with fax send receive capability at 9600 baud 300 14 400 bps data transmission rates 2400 4800 7200 9600 bps transmission rates Full duplex operation asynchronous or framed modes Error correction V 42 compliance MNP2 4 Data compression V 42bis 4 to 1 compression and MNP 5 2 to 1 compression Requires 3
53. ress modem install the new software for the modem which is included in the upgrade kit Replacement Note After reinstalling the CPU stiffener use the Duo battery contact alignment tool to check the alignment of the battery contacts ui 2300 Series Upgrade 42 Note Remind the customer to use the new power adapter included in the upgrade kit The older power adapter is not for use in the upgraded System m Service Source Additional Procedures PowerBook 200 Series n Battery Recharger 1 Type 1 Recharger Battery Recharger No preliminary steps are required before you begin this procedure 1 Using the PowerBook Duo power adapter plug the battery recharger into a power outlet and insert the main battery into the recharger ui Battery Recharger 2 Type 1 Recharger If the LED is e Yellow the battery is charging e Green the battery is ready to use Red the battery is Type 2 or Type 3 and the recharger is Type 1 the battery will not charge Or the Type 2 recharger has not been updated with software for a Type 3 battery see Note below ui er Additional Procedures Battery Recharger 3 e Off the recharger is unplugged the battery is bad the Type 1 power adapter is 2 0r 3 defective or the Battery recharger is defective Type 2 Note Use only Type 1 Battery batteries in a Type 1 battery Recharger re
54. ription High Capacity Type 3 in the upper right corner Type 2 batteries include the description High Capacity Type 2 in the upper right corner Type 1 batteries do not include this description ui Battery Handling 9 L_ Main Battery Note Use only Type 1 batteries in a Type 1 battery recharger Type 2 or Type 3 batteries will not charge You can charge Type 1 Type 2 or Type 3 batteries in a Type 2 battery recharger Note Before upgrading to a Type 2 battery you must install the Finished Goods Type 2 or Type 3 software extension Before upgrading to a Type 3 battery you must install the Finished Goods Type 3 software extension ui Battery Handling 10 Follow these guidelines for properly handling the NiMH battery e Handle the battery carefully Do not drop puncture disassemble mutilate or incinerate the battery ui Battery Handling 11 PowerBook Duo Battery Case with Battery e Fully charge a replacement battery before using it Apple ships batteries in a partially charged state Do not leave the battery in the computer for longer than a week without recharging ui Battery Handling 12 e To maximize battery life discharge and then recharge the battery once every 30 days Use only the power adaptor or recharger supplied with the Macintosh Duo system e Store the battery in the protective battery case e Do not short circu
55. rnal modem and remote modem Check phone cord connection and operation Verify that System is 7 1 or later Remove and reseat modem card Replace modem card quip er Troubleshooting Strange mix of characters appears on screen Symptom Charts Internal Modem Continued 39 Internal Modem Continued 1 num BW PP Verify that baud rate and data format settings of communications application are compatible with internal modem and remote modem Check phone cord connection and operation Verify that System is 7 1 or later Remove and reseat modem card Replace modem card Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener quip er Troubleshooting Modem interferes with system sound Symptom Charts Internal Modem Continued 40 Internal Modem Continued 1 Remove and reseat modem card 2 Replace modem card 3 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Modem does not respond to incoming call Symptom Charts Internal
56. sing Failure to engage the tabs correctly may cause them to break requiring replacement of the damaged bezel Also the exposed display may become contaminated Replacement Caution Make sure the display cable clears the center clutch opening before you snap the display assembly together ui Display Housing 79 Note If the Duo 270c or 280c display housing kit includes the latch mechanism replace the latch and spring whether or not they re broken 5 f you are replacing the latch and spring remove them from the bezel m 210 230 250 280 Dsply Cable 80 Display Cable 210 230 250 280 Dsply Cable Before you begin do the following Disconnect the power adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the center clutch case Remove the display assembly ui er Take Apart 210 230 250 280 Dsply Cable 81 e Remove the display housing Note Graphics in the display housing topic show the display assembly attached to the unit however the display assembly is not attached when you are removing the cable ui er Take Apart 210 230 250 280 Dsply Cable 82 Caution The PowerBook Duo contains CSMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety ui er Take Apart 210 230 250 280
57. tery may not charge cg 5 Lift the CPU stiffener Battery and attached display Contact housing straight up and remove the unit from the bottom case CPU Stiffener lt p er Take Apart Display Assembly and CPU Stiffener 37 EMI Clip Important Check that both EMI clips are securely attached to the CPU stiffener If the clips are not secure replace the stiffener Replacement Note Move the display switch cable and microphone cable forward before reinstalling the display assembly CPU stiffener unit This will prevent them from being caught under the stiffener and possibly damaged ui Display Assembly and CPU Stiffener 38 Replacement Note When reinstalling the display assembly CPU stiffener unit be sure to wrap the hard drive EMI shield around the outside of the stiffener Replacement Note After reinstalling the CPU stiffener use the Duo battery contact alignment tool to check the alignment of the battery contacts m Display Assembly 39 Display Assembly Display Assembly Before you begin do the following Disconnect the power adapter Remove the main battery Remove the keyboard Remove the end clutch covers Remove the top case Remove the center clutch cover ui Display Assembly 40 Note This topic includes procedures for removing the Duo 210 230 250 280 display assembly CPRC and International repairers See 270c 280c
58. the CPU stiffener ui er Troubleshooting Cursor intermittently does not move or moves erratically Symptom Charts Peripherals Continued 29 Peripherals Continued 1 Clean ball and rollers of trackball 2 Replace trackball 3 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Cursor moves but clicking trackball button has no effect Symptom Charts Peripherals Continued 30 Peripherals Continued 1 Simultaneously press Command Control Power On keys to reset computer 2 Check logic board cable connections 3 Replace trackball 4 Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting No response to any key on keyboard Symptom Charts Peripherals Continued 31 Peripherals Continued 5 6 7 Press Power On key or power button Adjust Battery Conservation setting in PowerBook Control Panel Check keyboard cable connection If you are using floppy adapter and external keyboard
59. tor Note The Duo 270c 280c display cable has two connectors one for the inverter board and another for the display driver board Duo 270c 280c Display Cable ui er Take Apart 270c 280c Display Cable 97 1 Using a T 8 torx driver remove the inverter board mounting screw Remove the four screws Mounting securing the EMI Screw display shield WOSE ff 3 Slide the inverter board i shield out from under the display shield 4 Carefully fold back the display cable tab and the inverter board shield tab away from the mounting screw hole Inverter Board Shield Display Shield ui er Take Apart 270c 280c Display Cable 98 5 Lift up the inverter board and turn it on its left side to expose the cable connectors IC Extractor Display Cable Connector Replacement Note Snap the inverter board onto its two plastic bezel mounts Note The speaker cable is very short and may prevent Cay ee you from raising the a inverter board a aie ge sufficiently If necessary disconnect the speaker cable Caution The display cable is fragile and should be handled with care uu Inverter Board er Take Apart 270c 280c Display Cable 99 6 Using an IC extractor disconnect the display IC Extractor cable connector from Display Cable the inverter board Connector Inverter Board quip 270c 280c Display Cable 100 7 Peel ba
60. wdriver push out the release tabs on the display cable and disconnect the cable P 9 Unwind the display cable from the torsion bar and remove the cable Display Cable ui er Take Apart 210 230 250 280 Dsply Cable 92 Replacement Note Before installing the new display cable gently roll the cable so it can be wrapped around the torsion bar m 270c 280c Display Cable 93 270c 280c Display Cable Before you begin do the j following 270c 280c Display Disconnect the power Cable adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers e Remove the top case e Remove the center clutch cover e Remove the display assembly lt p er Take Apart 270c 280c Display Cable 94 e Remove the display housing Note Graphics in the Display Housing topic show the display assembly attached to the unit however the display assembly is not attached when you are removing the cable ui er Take Apart 270c 280c Display Cable 95 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety ui er Take Apart 270c 280c Display Cable 96 Note The Duo 270c 280c display cable is available to CPRC and international repairers only Display Driver Board Connector Inverter Board Connec
61. wn good system disk Verify that trackball or mouse button is not stuck Check floppy drive cable connection Replace floppy drive cable Replace floppy adapter Replace floppy drive Replace logic board od 0m Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener ui er Troubleshooting Disk does not eject Symptom Charts External Floppy Drive Continued 25 External Floppy Drive Continued 1 N NOW BR W Switch off system and hold mouse or trackball button down while you switch system on Insert straightened paper clip into hole next to drive opening to eject disk Check floppy drive cable connection Replace floppy drive cable Replace floppy adapter Replace floppy drive Replace logic board Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener quip Troubleshooting Symptom Charts External Floppy Drive Continued 26 External Floppy Drive Continued Disk initialization 1 Try known good floppy disk fails 2 Check floppy drive cable connection 3 Replace floppy drive cable 4 Replace fl
62. y e Remove the trackball e Remove the display assembly Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety ui CPU Stiffener 52 Display Important If you are removing the logic board or case bottom do not follow these procedures Instead follow the steps outlined in Display Housing amp CPU Stiffener Caution PowerBook cables are fragile and easily torn or damaged Handle all cables with care 1 Using a jeweler s screwdriver carefully disconnect the display switch cable ui CPU Stiffener 53 2 Remove the microphone from the CPU stiffener Display ui er Take Apart CPU Stiffener 54 3 Remove the three mounting screws that secure the CPU stiffener to the bottom case Replacement Note The leftmost CPU stiffener mounting screw is also a CPU Stiffanar battery contact If you fail Mounting Screw 1 i to reinstall this screw the Battery Contact me battery may not charge 4 Lift the CPU stiffener straight up and remove it from the bottom case Bottom Case EMI Shield lt p CPU Stiffener 55 Important Check that both EMI clips are securely attached to the CPU stiffener If the clips are not secure replace the stiffener ui CPU Stiffener 56 Display Actuator i
63. ymptom Charts Peripherals Continued 36 Peripherals Continued I O devices are 1 Verify that System is 7 1 or later unrecognized or 2 Check floppy adapter and cable connections garbage is 3 Test device with known good computer transmitted or 4 Replace logic board received Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener Space bar is hard to Loosen keyboard screws Over tightening can warp keyboard and press and or does not restrict movement of space bar work m er Troubleshooting Internal modem options do not appear in CDEV Symptom Charts Internal Modem 37 Internal Modem Verify that System is 7 1 or later Remove and reseat modem card Replace modem card Replace logic board AUN Note When replacing the logic board check that the EMI clips are securely attached to the CPU stiffener The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips If both clips are not secure replace the CPU stiffener quip er Troubleshooting Modem does not respond properly to AT command set instructions Symptom Charts 38 Internal Modem Continued 1 wn BWP Verify that baud rate and data format settings of communications application are compatible with inte
64. ype 3 076 0419 lt a gt
65. ys and space bar to make sure they work ui Keyboard 6 2 Turn the computer upright and open the display Caution Handle the keyboard carefully to avoid tearing cables connected between the keyboard and the logic board 3 Carefully tilt the computer and lift out the keyboard Turn the keyboard over and place it on the palm rest ui Keyboard 7 4 Using a jeweler s screwdriver push out the release tabs and remove the two keyboard cables 5 Set aside the keyboard mp er Take Apart End Clutch Covers 8 End Clutch Covers Before you begin do the following e Disconnect the power adapter e Remove the main battery Note The end clutch covers are disposable If you break or cosmetically damage the covers replace them End Clutch Cover End Clutch Cover ui End Clutch Covers 9 Using a jeweler s screwdriver 1 push off the left and right end clutch covers lt u gt Top Case 10 Top Case Before you begin do the following e Disconnect the power adapter e Remove the main battery e Remove the keyboard e Remove the end clutch covers Top Case ui Top Case 11 Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety ui Top Case 1

Apple 210 Laptop User Manual

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