Apple 550C User's Manual
Contents
1. 29 3 Note Use a rocking oe i z motion to disconnect the hard drive cable from the hard drive Lift the drive partway out of the unit and disconnect the hard drive cable 4 Remove the hard drive Ueda lt p DES Apart Hard Drive 13 5 If you are replacing the hard drive remove the f four screws and remove f f the hard drive bracket and insulator Replacement Note Reinstall the hard drive bracket and insulator on the replacement hard drive areen 407 Clutch Covers 14 Clutch Covers remove Before you begin the battery PCMCIA module Clutch Cover quip lo Take Apart Clutch Covers 15 ifm a i 1 Open the unit and rotate iN the display assembly as far back as it will go 2 Using a flat blade screwdriver and your fingers press in on both sides of the wide end of the right clutch cover and release the two front latches 3 Rotate the clutch cover up release the third latch and remove the cover 4 Repeat for the left clutch cover Clutch Covers 16 Replacement Caution Be careful not to pinch or rip the display cable when you replace the right clutch cover lt u gt Display Access Cover 17 d A e g A vy 02 O O D gt lt a Fa 35 Say 02 gt P av vT N 6 2 O Ly Av ss Display Access lo Take Apart Display Access Cover 18 1 Open t2. Internal Modem Sends and receives data at 19 2 bps sends and receives faxes at 14 4 bps SCSI Adapter Enables connection between PowerBook computer and desktop Macintosh PowerBook appears as a hard drive on the desktop PCMCIA Module Enables use of two Type I or Il PCMCIA cards or one Type Ill card lt u gt Service Source Troubleshooting Macintosh PowerBook 550c lt a gt lol Troubleshooting General 1 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 lt a gt Troubleshooting Power Manager Reset 2 Power Manager Reset Reset the power manager if The battery and power adapter are proven good but the computer will not power on The computer will not reset after a system crash To reset the power manager in the Macintosh PowerBook 550c Remove the AC adapter and the battery Let the unit sit without power hoo
3. Board lt u gt Display Bezel Assembly 76 Display Bezel Assembly Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly quip o Take Apart Display Bezel Assembly 77 1 Remove the microphone from the plastic retainer 2 Disconnect the speaker cable from the interconnect board 3 Remove the bottom two bezel mounting screws Speaker Cable Microphone o Take Apart Display Bezel Assembly 78 1 4 Pry off the two rubber bumpers 5 Remove the top two bezel mounting screws Display Bezel Assembly 79 6 Note Two hooks on each side of the bezel secure it to the rear housing Pull the display bezel forward and lift it off the rear housing Display Bezel lt u gt Display 80 Display Display Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Display bezel assembly Note The display EMI shield is attached to the display with adhesive Pry up the shield carefully when removing it from the display quip Display 81 Interconnect to Display Cable Fold back the display EMI shield from the top and side edges of the display Remove the four mounting screws Disconnect the backlight cable from the inverter board Disconnect the interconnect to display cable from the intercon
4. Service Source Macintosh PowerBook 550c This product is forJapan only BP Service Source Basics Macintosh PowerBook 550c lt u gt General Information 1 General Information The Macintosh PowerBook 550c features a built in trackpad intelligent batteries two battery bays an optional PCMCIA expansion module a darker shade of plastics and a 10 4 display The computer is available in Japan only lt u gt FR Basics Rear Panel 2 Rear Panel The illustration below shows the location of ports and connectors on the rear panel of the Macintosh PowerBook 550c eo E of fl Power Printers Audio Audio Apple Ethernet t Internal Adapter Modem Input Output Desktop fHDI z0 Modem Eus toptional lt u gt PowerBook Screw Matrix 3 PowerBook Screw Matrix Nine different types of screws are used in the Macintosh PowerBook 550c All are Torx screws and require either a T 8 or T 6 Torx screwdriver Note The legend for the screws follows on the next page lt gt PowerBook Screw Matrix 4 Legend for Macintosh PowerBook 550c Screws 1 2 A 6 N 6 a Feet Hard drive keyboard bottom case middle front display assembly floppy drive daughterboard EMI shield top edge inside edge of top case right side panel Display bezel display clutch DAA Trackpad cable and actuator daughterboard EMI shield sides motherboard standoff Rear
5. to Display Cable Interconnect to Inverter Cable lt u gt DES Apart Interconnect to Inverter Cable 87 Interconnect to Inverter Cable Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Display bezel assembly Display Interconnect to Inverter Cable lt gt ol Take Apart Interconnect to Inverter Cable 88 1 Disconnect the interconnect to inverter cable from the interconnect and inverter boards 2 Remove the cable DES Apart Interconnect to Display Cable 89 Interconnect to Display Cable Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Display bezel assembly Display Interconnect to Display Cable lt gt DES Apart Interconnect to Display Cable 90 1 Disconnect the interconnect to display cable from the back of the display 2 Remove the cable Interconnect to Display Cable lt u gt Clutches 91 Clutches Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Display bezel assembly Clutch quip Clutches 92 Remove the mounting screw for the right clutch and remove the clutch Repeat for the left clutch lt u gt ia Take Apart Display EMI Shield 93 Display EMI Shield Display EMI Shield Before
6. PowerBook 550c lt a gt
7. operate Symptom Charts Video Continued 11 Video Continued Verify that backlight cable connection is secure 2 Check cable inverter board interconnect board daughterboard and motherboard connections 3 Verify that cables are not pinched or severed 4 Replace inverter board 5 Replace interconnect to inverter cable 6 Replace interconnect board 7 Replace interconnect to display cable 8 Replace display 9 Replace daughterboard 10 Replace motherboard quip Troubleshooting Symptom Charts Video Continued 12 Video Continued No display but computer appears to operate correctly Press any key to wake computer from system sleep Adjust screen contrast and brightness settings Verify cable inverter board trackpad keyboard inter connect board daughterboard and motherboard connections Connect power adapter Replace inverter board Replace interconnect board Replace interconnect to display cable Replace display Reseat daughterboard 10 Replace daughterboard 11 Replace motherboard Ww N OON DUN A lt a gt E Troubleshooting Audio and video present but internal floppy drive does not operate Disk ejects while booting display shows Mac icon with blinking X Symptom Charts Floppy Drive 13 Floppy Drive 1 Try known good floppy disk 2 Check floppy drive cable connection 3 Replace floppy drive cable 4 Replace floppy drive 5 Replace motherbo
8. panel Hard drive bracket Inverter board interconnect board Bottom case front corners left side panel Floppy drive bracket lt u gt PowerBook Cable Matrix 5 PowerBook Cable Matrix For a matrix of cables that work with specific models of the PowerBook family of computers refer to the PowerBook Cable Matrix The Macintosh PowerBook 5500 uses the same cables as the Macintosh PowerBook 520 540 Series lt u gt PCMCIA Module Handling 6 PCMCIA Module Handling The PCMCIA Personal Computer Memory Card International Association expansion module is an option for the Macintosh PowerBook 550c The module inserts into the computer s second left battery bay and has two slots that accept a variety of third party PCMCIA cards There are three types of PCMCIA cards Type 3 mm Type Il 5 mm and Type Ill 10 mm Type I and Type II cards fit in either the upper or lower slot of the expansion module Type Ill cards fit in the lower slot and take up both slots The following are guidelines for properly handling the PCMCIA expansion module e Do not insert or remove the PCMCIA expansion module while the computer is on or in Sleep mode if you do the lt gt PCMCIA Module Handling 7 computer will shut down and all RAM contents will be lost Eject the PCMCIA module using the lever at the front of the module eject a PCMCIA card using the PCMCIA Eject control panel or the PCMCIA Quick Eject mod
9. to 36 MB with third party RAM expansion card 2 MB 256 bytes of parameter memory 512K of static video display memory CMOS custom chip with long life lithium battery lt u gt ia Specifications Disk Storage 3 Disk Storage Floppy Drive 15 mm high internal 1 4 MB Apple SuperDrive Hard Drive 2 5 in 750 MB hard drive lt u gt I O Interfaces 4 SCSI Apple Desktop Bus Serial Sound I O Interfaces HDI 30 SCSI port with 1 5 MB sec transfer rate Supports up to six external SCSI devices Connect SCSI device to computer with HDI 30 SCSI system cable Apple Desktop Bus ADB port 200 mA maximum current draw for all ADB devices RS 422 serial port mini DIN 8 connector Stereo sound in port Stereo sound out headphone jack standard 3 5 mm stereo miniplugs quip I O Interfaces 5 Ethernet Processor Direct Slot Power Adapter Modem Security Micro DV 14 video out port 8 bit 256 color video output Supports most Macintosh VGA and SVGA monitors High speed Ethernet port Apple AUI connector 90 pin processor direct slot PDS for PDS devices or optional Personal Computer Memory Card International Association PCMCIA adapter PCMCIA expansion module allows use of two Type Il or one Type IlI PCMCIA type card Power adapter port Slot for optional internal modem Slot for third party security equipment lt a gt E Specifications I O Devices 6 I O Devices Keyboard Built i
10. you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Display bezel assembly Display Inverter board Interconnect board Interconnect to inverter cable Clutches lt gt DES Apart Display EMI Shield 94 Remove the display EMI shield from the display rear housing Display EMI Shield lt gt Display Rear Housing 95 Display Rear Housing Display Rear Housing To remove the rear housing remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Display bezel assembly Display Inverter board Interconnect board Interconnect to inverter cable Clutches Display EMI shield lt u gt Service Source Upgrades Macintosh PowerBook 550c lt u gt RAM Card 1 RAM Card RAM Card Before you begin remove the following e Battery PCMCIA module e Keyboard e Center base cover e Daughterboard EMI shield Caution Handle the RAM expansion card by the edges only Do not touch any components on the card Note The RAM card is a PowerBook 550c option This procedure explains how to install the card quip RAM Card 2 1 Remove the plastic retainer bar 2 Caution An incorrectly installed RAM card could damage the daughter board Note that the expansion connector and the RAM card are keyed for proper installation Do not defeat the key by forcing the card in
11. 6 ZA __ Inverter Board 922 1445 4 4 yee Interconnect to Inverter Cable 922 1554 i Display 661 0983 JAA Display Bezel Kit 076 0516 Clutch Display Access Cover 076 0299 oa 922 1586 aba Nia Clutch Cover ae ae j Qar eyboar 922 1553 a J661 1001 Microphone Bottom Top 922 0783 AN Housing Kit Display EMI Shield 922 1212 08 Carrier iieeneonnice TE MEDY Cable K gt Trackpad Battery A 922 1587 oe Backup Se Trackpad Daughterboard EMI Shield Cover Cable 922 0773 922 0787 Assembly 922 0769 RAM Card ee Bian Housing J661 0205 Japan only A ane o 076 0518 CPU Stiffener 922 0910 Interconnect to Logic Board Cable 922 0778 gt Floppy Drive A gt 1 0994 ADO J 661 0 0000 Drive Daughterboard 661 0982 Modem 661 0198 Hard Drive Bracke 922 1209 LTRS Bracket Motherboard 076 0462 Hard Drive 661 1034 Floppy Drive 661 1298 Ry Cable oo Hard Drive Cable Fuse 922 1116 og DAA Japanese 922 1222 Left Housing Panel 676 051 8 Center Base Cover Main Battery Rear Door Kaa 922 1583 KS W Door 922 1584 A 661 0055 Battery Modem Cap ____g A Contact 922 1585 L Cover Bottom Top 922 1182 Housing Kit Power 076 0519 Adapter Battery Bezel SS PCMCIA Module 922 0825 eos RB 6 661 0137 Product family configurations may vary For parts with astrisk refer to parts list
12. ackpad surface Check trackpad connections Replace trackpad Replace keyboard Replace interconnect board Replace motherboard Check mouse connection to ADB port Reset the power manager Clean mouse ball and inside mouse Replace mouse Replace motherboard quip E Troubleshooting Cursor moves but clicking trackpad button has no effect No response to any key on keyboard Symptom Charts Peripheral Continued 20 Peripheral Continued Ww N NOUA nounKRWDY Reset the power manager Check trackpad connections Check interconnect board keyboard and motherboard connections Replace trackpad Replace keyboard Replace interconnect board Replace motherboard Verify that computer is on Reset the power manager Check keyboard and interconnect board connections Replace keyboard Replace interconnect board Replace motherboard quip E Troubleshooting Known good direct connect printer does not print Symptom Charts Peripheral Continued 21 Peripheral Continued 1 2 3 4 5 6 7 Verify that System is 7 1 1 or later Verify that Chooser and Control Panel settings are correct Check cables Replace printer cable Try known good printer Replace daughterboard Replace motherboard quip E Troubleshooting Known good network printer does not print In disk mode computer does not display SCSI icon until host is booted or computer crashes when host is sh
13. ard NOW BRWD Try known good system disk Verify that trackpad and trackpad button are working Verify that keyboard is working Check floppy drive cable connection Replace floppy drive cable Replace floppy drive Replace motherboard quip ia Troubleshooting Disk does not eject Symptom Charts Floppy Drive Continued 14 Floppy Drive Continued 1 N O Switch off system and hold trackpad button down while you switch system on Eject disk manually by carefully inserting opened paper clip into hole near floppy drive slot If PowerBook serial number is between FC410 and FC414 or between CD412 and CK414 replace floppy drive Check floppy drive cable connection Reinstall floppy drive brackets Refer to Floppy Drive in Take Apart Replace floppy drive cable Replace floppy drive Replace motherboard quip Troubleshooting Symptom Charts Floppy Drive Continued 15 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 floppy drive Read write copy Try known good floppy disk error Check floppy drive cable connection Try application disk and data file on floppy disk Replace floppy drive cable Replace floppy drive 0 022 00 lt a gt lol Troubleshooting Symptom Charts Hard Drive 16 Internal hard drive does not operate Hard Drive 1 Make sure power adap
14. ckup Battery Verification 3 Backup Battery Verification The backup battery saves the PRAM and power management information on the logic board when the computer is shut down To check that the backup battery is working follow the procedures below 1 Set the date and time 2 Perform a Shut Down from the Apple Menu or Special menu 3 Remove the main battery and disconnect the power adaptor for 10 minutes 4 Connect the power adaptor insert the battery and power on the computer 5 If the date and time were lost the backup battery may be dead or discharged lt gt fa Additional Procedures Backup Battery Verification 4 6 To recharge the backup battery leave the PowerBook plugged in for 48 hours It is ok to use it while it is charging 7 Ifthe backup battery appears dead or will not charge replace the backup battery lt u gt Adapter Verification 5 x Adapter Plug Negative Probe Positive Probe Adapter Verification To verify the charge of the AC adapter e Plug in the AC adapter to a wall socket e Set a voltmeter to the 10 volts DC scale e Touch the positive volt meter probe to the inside of the adapter plug and touch the negative volt meter probe to the outside of the plug If the reading is not 16 volts replace the adapter lt u gt Service Source Exploded View Macintosh PowerBook 550c lt qu gt Exploded View 076 051
15. ear Door 62 Rear Door Rear Door No preliminary steps are required lt p Rear Door 63 1 Open the rear door 2 Carefully bend the door so that the middle bows downward 3 Unhinge the bottom door pegs and remove the rear door oor Peg Door Peg lt u gt Bottom Case 64 Bottom Case Bottom Case To remove the bottom case remove the following Battery PCMCIA module Rear door Clutch covers Display access cover Display assembly Keyboard Hard drive Center base cover Floppy drive Daughterboard EMI shield Top case Interconnect to logic bd cable Side panels quip lol Take Apart Bottom Case 65 e CPU stiffener e Motherboard lt u gt Microphone Assembly 66 Microphone Assembly Before you begin remove the following e Battery PCMCIA module e Display access cover quip o Take Apart Microphone Assembly 67 1 Carefully disconnect the microphone cable from the interconnect board 2 Using a small flat blade screwdriver pry up and remove the microphone assembly Backup Battery 68 Backup Battery Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Keyboard Hard drive Center base cover Floppy drive Top case quip Backup Battery 69 Using a small flat blade screwdriver pry up and remove the backup battery cover l
16. ecause the connector is not keyed the cable could be reinserted upside down Disconnect the interconnect to logic board cable from the motherboard and remove the cable Side Panels 47 Right Side Panel Side Panels Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Keyboard Hard drive Center base cover Floppy drive Top case quip Side Panels 48 Using a T 8 torx driver remove the right side panel mounting screw Lift the panel slightly slide it back and remove it from the CPU stiffener Using a T 8 torx driver remove the three left side panel mounting screws Slide the panel to the left and remove it from the CPU stiffener lt u gt DES Apart CPU Stiffener 49 CPU Stiffener Before you begin remove the following CPU Stiffener e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Keyboard e Hard drive e Center base cover e Floppy drive e Daughterboard EMI shield e Top case e Interconnect to logic bd cable lt gt CPU Stiffener 50 Left Side Panel Note In this take apart procedure the CPU stiffener is removed with the side panels attached This procedure also explains how to remove the panels from the stiffener 1 Unlatch the left side panel from the back panel lt p CPU Stiffener 51 2 Rotate t
17. ection error does not communicate correction is internal modem default with remote modem 2 If remote modem does not need error correction type AT amp QO to disable error correction quip Troubleshooting You are using System 7 5 and two messages appear This Macintosh may not have been shut down properly and Incoming fax cannot be received because internal modem could not be identified Following the messages the system hangs Symptom Charts Internal Modem Continued 28 Internal Modem Continued 1 Restart while holding down the Space bar This procedure will open Extensions Manager e Disable the PowerPort 500 control panel by removing the check mark Close the Extensions Manager window to complete startup Open the General Controls control panel and turn off the shutdown warning e Open the Extensions Manager control panel and turn on the PowerPort 500 control panel e Restart Restart with extensions off and remove the GlobalFax files GlobalFax Personal folders and PowerPort 500 from the System folder e Reinstall the Global Village software Move the GlobalFax addresses into a new folder lt a gt lol Troubleshooting Symptom Charts PCMCIA Module 29 PCMCIA card won t eject PCMCIA card is inserted but doesn t appear on desktop PCMCIA Module 1 Make sure PCMCIA slot is not blocked 2 Insert straightened paper clip into hole next to slot I
18. em card if installed quip Daughterboard 36 Note To remove the daughterboard you will need to adapt an IC extractor so that it has a wide grip 1 Grasp an IC extractor by the legs and pull outward lt p Daughterboard 37 Remove the plastic retainer bar Note The daughterboard is connected to the motherboard below the RAM card connector Caution You may have to use some force to disconnect the daughter board Use an IC extractor as illustrated Do not pry up the board with a screwdriver Place the legs of the IC extractor in the notches at the end of the daugh terboard and pull up Top Case 38 Top Case Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Keyboard Hard drive Center base cover Floppy drive quip fa Take Apart Top Case 39 r Small Screw r Small Screw Rotate the feet to the up position Using a T 8 torx driver remove the screw located under each foot Remove the four screws at the front edge of the bottom case lt p Top Case 40 4 Remove the remaining screw on the inside top edge of the case lt p lo Take Apart Top Case 41 5 Caution The top case is connected to the motherboard by the trackpad cable Be i careful not to lift the top case too far off the unit i or you may damage the cable Carefully lift and rotate t
19. ery lt gt Battery PCMCIA Module 5 5 Note Complete the following step if a PCMCIA expansion module is installed in the computer Using the tip of your finger rotate the lever at the front of the PCMCIA module toward you 6 Note You may have to use some force when pulling the module out of the computer Holding onto the lever pull the PCMCIA module out of the computer Keyboard 6 Keyboard Before you begin remove the battery PCMCIA module quip Keyboard 7 1 Using a T 8 torx driver remove the middle two bottom housing screws lt p 8 Keyboard Take Apart blade lift the 2 Using a small flat screwdriver front of the keyboard and pull it forward slightly as Bee 3 Rotate the keyboard so Petry that it is perpendicular to the top cover pe oO O Es gt oO x lo Take Apart Keyboard 9 4 Release the locking tabs on the two keyboard cable connectors and disconnect the cables from the motherboard 5 Lift off the keyboard Locking Hard Drive 10 Hard Drive Before you begin remove the following e Battery PCMCIA module e Keyboard quip Hard Drive 11 1 Using a T 8 torx driver remove the hard drive mounting screw DES Apart Hard Drive 12 2 Using a small flat blade screwdriver pry up the front of the hard drive and slide it forward 1 2 inch M Hard Drive e
20. espond Symptom Charts Power 5 Power 1 Restart computer 2 Connect power adapter and restart computer in 3 4 minutes 3 Try known good charged main battery 4 Check all interconnect board daughterboard and motherboard connections Reset the power manager Replace keyboard Replace interconnect board Replace daughterboard Replace motherboard O ON DW quip E Troubleshooting After you remove main battery some Control Panel settings are different Power adapter is plugged in but Control Strip doesn t indicate adapter is connected Symptom Charts Power Continued 6 Power Continued Check cables Replace backup battery Replace interconnect board Replace daughterboard Replace motherboard a AUN Verify that power adapter is connected correctly Try known good charged main battery Try known good power adapter Replace motherboard AUN quip E Troubleshooting Low power warning appears Computer runs when plugged into wall outlet but not on battery power battery voltage is within tolerance Symptom Charts Power Continued 7 Power Continued 1 Recharge battery or attach power adapter 2 Verify that peripherals are low power 3 Reduce use of floppy or hard drive modem sound backlight or other power consuming devices or connect power adapter 4 Try known good charged main battery 5 Try known good power adapter 6 Replace motherboard 1 Reseat battery to ma
21. f defective card or unrecognizable card appears in place of card name in PCMCIA Eject control panel card is damaged or computer does not have software required to support it Eject card lt a gt ia Troubleshooting Screen goes blank and computer shuts down every few minutes Application seems to run slower after a few seconds Hard drive is slow to respond or screen goes blank too often Symptom Charts Miscellaneous 30 Miscellaneous Computer is going into system sleep to conserve battery power Adjust sleep delays in Control Panel or connect power adapter Computer is switching to system rest If system rest is interfering with operation of application connect power adapter Adjust sleep delays in Control Panel or connect power adapter quip Troubleshooting Symptom Charts Miscellaneous Continued 31 Miscellaneous Continued No sound from 1 Verify that volume setting in Control Panel is above 0 speaker 2 Verify that no external speaker is plugged in 3 Check connections of speaker to interconnect board and interconnect board to motherboard 4 Replace interconnect board 5 Replace motherboard PowerBook clicks Reinstall center base cover making sure screw nearest SCSI port when closed is installed first See Take Apart lt a gt Service Source Take Apart Macintosh PowerBook 550c lt u gt Battery PCMCIA Module 1 Second Battery PCMCIA Module Main Bat
22. he feet to the up position 3 Lift the CPU stiffener straight off the unit CPU Stiffener quip DES Apart CPU Stiffener 52 Note If you are replacing the CPU stiffener remove the side panels 4 Using a T 8 torx driver remove the right side panel screw 5 Lift the panel slightly slide it back and remove it from the CPU stiffener 6 Using a T 8 torx driver remove the three left side panel screws 7 Slide the panel to the left and remove it from the CPU stiffener lt gt CPU Stiffener 53 Replacement Caution Make sure both EMI clips fold on top of the clutch pegs If the right clip accidentally folds backward and touches the pins for the power connector the contact could short out the motherboard DES Apart Lifter Feet 54 Lifter Feet Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Keyboard e Hard drive e Center base cover e Floppy drive e Daughterboard EMI shield Top case e Interconnect to logic bd cable e CPU stiffener quip DES Apart Lifter Feet 55 1 Remove the mounting screw and washer for the right lifter foot and remove the foot 2 Repeat for the left lifter foot Lifter Foot es lt u gt DES Apart Motherboard 56 Motherboard Before you begin remove the following Battery PCMCIA module Clutch covers Display acces
23. he top case toward you and disconnect the trackpad cable from the motherboard lo Take Apart Top Case 42 6 Remove the interconnect to logic board cable from the Interconnect to Logic opening for the right Board Cable clutch Right Clutch One 7 Remove the top case EMI Clip Replacement Note Before securing the top case to the bottom case thread the interconnect to logic board cable through the opening for the right clutch Form a loop around the EMI clip by wrapping the cable from behind and then over and under the clip Fuse 43 Fuse Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Keyboard e Hard drive e Center base cover e Floppy drive e Top case quip Fuse 44 Using a small flat blade screwdriver pry up and remove the fuse DES Apart Interconnect to Logic Bd Cable 45 Interconnect to Interconnect to Logic B d Cable Logic Board Cable Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Keyboard e Hard drive e Center base cover e Floppy drive e Top case quip lo Take Apart Interconnect to Logic Bd Cable 46 Interconnect to Logic Board Caution Before discon necting the interconnect to logic board cable note the correct orientation of the cable connection B
24. he unit and rotate the display assembly as far back as it will go 2 Using a small flat blade screwdriver pry up the display access cover at the three slots in the front of the cover 3 Remove the display access cover Display Assembly 19 Display Assembly f Display Assembly Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover quip Interconnect to Logic Board Cable Display Assembly 20 Caution Support the display assembly from beneath before removing it 1 Open the unit and rotate the display assembly as far back as it will go 2 Disconnect the interconnect to logic board cable 3 Using a T 8 torx driver remove the two display mounting screws 4 Slide the display assembly to the left so that the right clutch clears the loop of the Display Assembly 21 interconnect to logic board cable Remove the display assembly lt u gt Center Base Cover 22 Center Base Cover Before you begin remove the following e Battery PCMCIA module e Keyboard Center Base Cover quip Center Base Cover 23 Using a T 8 torx driver remove the two rear panel screws Replacement Caution When replacing the rear panel screws be sure to install the right screw first the screw nearest the SCSI port quip Center Base Cover 24 2 Pull the center base cover forward slightly and slide it 1 2 i
25. ications application are compatible with internal modem and remote modem Check phone cord connection and operation Verify that System is 7 1 1 or later Reseat modem card Replace modem card quip ia Troubleshooting Strange mix of characters appears on screen Modem interferes with system sound Symptom Charts Internal Modem Continued 25 Internal Modem Continued 1 NOM BW P AUN 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 1 or later Reseat modem card Replace modem card Replace daughterboard Replace motherboard Reseat modem card Replace modem card Replace interconnect board Replace motherboard quip E Troubleshooting Modem does not respond to incoming call Modem has no sound output Symptom Charts Internal Modem Continued 26 Internal Modem Continued 1 If computer is in sleep mode verify that Wake On Ring option in CDEV is selected Check phone cord connection and operation Replace modem card Replace motherboard Verify that Control Panel volume setting is above 0 Replace modem card Replace interconnect board Replace motherboard quip E Troubleshooting Symptom Charts Internal Modem Continued 27 Internal Modem Continued Modem connects but 1 Verify that remote modem needs error corr
26. ke sure battery is mating with contacts on motherboard 2 Replace motherboard 3 Return computer to Apple quip Troubleshooting Symptom Charts Power Continued 8 Power Continued Computer won t 1 Restart computer power up Connect power adapter and restart computer in 3 4 minutes Try known good power adapter Verify power adapter tip is not chipped or cracked Try known good charged main battery Replace fuse on motherboard Replace motherboard Return computer to Apple Ww N NOUA lt a gt E Troubleshooting Pixel never comes on oris always on Partial or full row of pixels is always on or never comes on Symptom Charts Video 9 Video If more than five pixels do not come on or are always on replace display Check cables Replace interconnect board Replace motherboard Replace display AUN quip ia Troubleshooting Display is very light or totally white Display stopped working or dimmed but is fine now Symptom Charts Video Continued 10 Video Continued Adjust screen contrast and brightness settings Verify cable inverter board interconnect board daughterboard and motherboard connections Replace inverter board Replace interconnect board Replace interconnect to display cable Replace display Replace daughterboard Replace motherboard N CONDOM HRW Let screen warm up for 30 minutes quip ia Troubleshooting Backlight doesn t
27. ked up for 3 5 minutes Simultaneously hold down the Control Command Option and Power On keys for 5 10 seconds Reinstall the battery and if necessary reconnect the AC adapter Turn on the computer lt a gt Troubleshooting AC Adapter Voltage Test 3 AC Adapter Voltage Test To test the AC adapter voltage Use narrow test probes for the leads on your voltmeter Make all measurements with the negative or common lead touching the outer shield of the connector ground Use the following table to identify the connector pin number signal name and DC voltage present Connector Pin Signal DC Voltage 1 VBATT 16 4 16 6V 2 VMAIN 16 4 16 6V 3 GND OV 4 GND Sense OV lt a gt lol Troubleshooting Symptom Charts Startup 4 RAM failure occurs eight tone error chord sounds after startup chord Hardware failure occurs four tone error chord sounds after startup chord Symptom Charts Startup 1 Reseat RAM expansion card and check connection 2 Replace RAM expansion card 3 Replace daughterboard 4 Replace motherboard Disconnect hard drive cable and restart computer If startup sequence is normal reconnect cable and retest Replace hard drive Disconnect floppy drive cable and restart computer If startup sequence is normal reconnect cable and retest Replace floppy drive Replace motherboard lt a gt E Troubleshooting Screen is blank computer doesn t r
28. n keyboard with 12 function keys 76 keys domestic 77 keys ISO Two level tilt adjustment Trackpad Solid state trackpad Microphone Electret omnidirectional Output voltage of 4 mV peak to peak lt u gt ia Specifications Sound and Video 7 Sound and Video Sound Generator Apple sound chip provides 16 bit sound capable of driving stereo headphones or other stereo equipment through the sound jack Built in stereo speakers Video Display 10 4 in diagonal screen Backlit active matrix color display 640 x 400 pixels at thousands of colors 640 x 480 pixels at 256 colors lt u gt E Specifications Electrical 8 Electrical Main Battery Two nickel metal hydride NiMH batteries Up to 3 5 hours of usage per battery before recharging Recharge time 2 hours in shut down or sleep mode 4 hours while computer is running Power Adapter 110 240 VAC line voltage 40 W 50 60 Hz lt u gt E Specifications Physical 9 Dimensions Height Width Depth Weight Physical 2 25 in 5 7 cm 11 5 in 29 2 cm 9 65 in 24 5 cm 7 3 Ib 3 3 kg lt u gt ia Specifications Environmental 10 Operating Temperature Storage Temperature Relative Humidity Operating Altitude Storage Altitude Environmental 50 104 F 10 40 C 13 to 140 F 25 to 60 C 20 80 noncondensing 0 10 000 ft 0 3048 m 0 15 000 ft 0 4572 m lt u gt ia Specifications Other 11 Other
29. nch to the right to release the two screw Carriers 3 Remove the center base cover Floppy Drive 25 Floppy Drive Before you begin remove the following e Battery PCMCIA module e Keyboard e Center base cover Floppy Drive lt p Floppy Drive 26 1 Using a T 8 torx driver remove the two floppy drive screws lt i gt Floppy Drive 27 Using a small flat blade screwdriver pry up the cable end of the floppy drive and slide the drive 1 2 inch to the left Slide the drive forward slightly and lift it partway out of the unit Disconnect the floppy drive cable from the motherboard and remove the drive atrial are 2 Ses ets ee Floppy Drive 28 Replacement Caution Before disconnecting the floppy drive cable from the drive note the cable folds and the correct orientation of the cable connection Because the cable connector is not keyed the floppy drive cable could be reinserted upside down Replacement Caution When you reinstall the floppy drive make sure the floppy drive cable folds on top of the drive not below it Floppy Drive 29 5 If you are replacing the floppy drive or floppy drive cable release the locking tabs and disconnect the cable from the drive me __ Locking Tab Floppy Drive Cable lt p Floppy Drive 30 If you are replacing the floppy drive rem
30. nect board Lift the display from the rear housing quip DES Apart Display 82 6 If you are replacing the display disconnect and remove the inter connect to display cable from the back of the display Interconnect to Display Cable lt u gt Inverter Board 83 Inverter Board Inverter Board Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Display bezel assembly Note The display EMI shield covers the inverter board and attaches to the display with adhesive Pry up the shield carefully before removing the inverter board quip DES Apart Inverter Board 84 1 Fold back the display EMI shield from the right edge of the display 2 Remove the inverter board mounting screw 3 Disconnect the interconnect to inverter cable and the backlight cable 4 Remove the inverter board Backlight Cable nterconnect to Inverter Cable 407 Interconnect Board 85 Interconnect Board Before you begin remove the following e Battery PCMCIA module e Clutch covers e Display access cover e Display assembly e Display bezel assembly Interconnect Board quip DES Apart Interconnect Board 86 1 Disconnect the interconnect to display cable and the interconnect to inverter cable 2 Remove the two mounting screws 3 Remove the interconnect board Interconnect
31. ove the two right bracket screws and remove the right bracket Remove the two left bracket screws and remove the left bracket quip Floppy Drive 31 Replacement Note Reinstall the floppy drive brackets and floppy drive cable on the replacement floppy drive Use the following procedure for the brackets e Start the screws in the right bracket e Push the front of the bracket toward the top of the floppy drive e Hold the bracket in this position and retighten the screws e Repeat for the left bracket iil gt Floppy Drive 32 Replacement Caution If the brackets are not pushed toward the top of the floppy drive the floppy disk may not eject properly lt u gt DES Apart Daughterboard EMI Shield 33 Daughterboard EMI Shield Before you begin remove the following Battery PCMCIA module Keyboard Center base cover Daughterboard EMI Shield quip Daughterboard EMI Shield 34 1 Remove the three mounting screws 2 Using a small flat blade screwdriver pry up and remove the daughterboard EMI shield Replacement Caution Make sure all the tabs on the sides of the shield fit inside the daughterboard guide Daughterboardlt f _EMI Shield Daughterboard 35 Daughterboard Daughterboard Before you begin remove the following Battery PCMCIA module Keyboard Center base cover Daughterboard EMI shield RAM card if installed Mod
32. pecial instructions on how to remove the modem quip Modem Cap E Modem and DAA Cards 7 Slide the modem card under the RAM card guides and connect the modem card to the motherboard Pull up and remove the modem cap Upgrades Modem and DAA Cards 8 lal 3 Install the modem port frame on the DAA card mui Modem Card with 4 Note The connector for Modem Port Frame the DAA card is on the underside of the right end of the card Connect the DAA card to the motherboard 5 Install the DAA mounting screw Modem and DAA Cards 9 Note The following page explains how to remove the modem card To remove the card you will need to adapt an IC extractor so that it has a wide grip Grasp an IC extractor by the legs and pull outward lt p Modem and DAA Cards 10 7 Toremove the modem card place the legs of the IC extractor in the notches at the end of the board and pull up PCMCIA Module Upgrade 11 PCMCIA Expansion Module PCMCIA Module Upgrade Before you begin remove the second left battery Important Before removing the battery or inserting the PCMCIA expansion module into the computer use the Macintosh Shut Down command Otherwise the computer will shut down automatically and all RAM contents will be lost Note The PCMCIA expansion module is a lt gt PCMCIA Module Upgrade 12 Left Battery Bay Macintosh PowerBook 550c o
33. ption The module comes with a protec tive cap and PCMCIA driver software 1 Note You will feel some resistance when you insert the PCMCIA expansion module into the computer Continue to press the module in until it is firmly seated Insert the PCMCIA expansion module into the left battery bay quip PCMCIA Module Upgrade 13 2 Note Refer to the PCMCIA Expansion Module User s Guide for directions on how to install the module software Install the PCMCIA expansion module software Note Refer to Battery PCMCIA Module in Take Apart for directions on how to eject the module from the computer lt u gt Service Source Additional Procedures PowerBook 550c lt u gt Battery Verification 1 Positive Battery Verification The Control Strip on the PowerBook 500 Series desktop shows the battery charge and the rate at which the battery is being used Use a voltmeter to measure the actual battery charge 1 Set the voltmeter to the 10 volts DC scale 2 Hold the positive probe of the voltmeter to the positive battery terminal and the quip ia Additional Procedures Battery Verification 2 negative probe to the negative terminal 3 A fully charged battery measures approximately 10 8 volts a fully discharged battery measures 7 8 volts Note If a battery is stored outside the computer for extended periods its voltage may drop to 5 0 lt u gt Ba
34. s cover Display assembly Keyboard Hard drive Center base cover Floppy drive Daughterboard EMI shield Top case Interconnect to logic bd cable CPU stiffener e DAA card if installed lt gt o Take Apart Sound Out Port Motherboard 57 Remove the motherboard mounting screw and standoff Carefully pry the motherboard from the positioning peg located below the standoff Slide the board forward 1 4 inch Caution In lifting the motherboard be careful that the sound in and sound out ports clear the openings in the rear panel Lift off the motherboard Motherboard 58 If you are replacing the motherboard discon nect the RAM card if installed daughter board and modem card if installed lt p Take Apart Motherboard 59 Replacement Note Make sure the front of the motherboard fits securely below the positioning peg on the bottom case DES Apart Hard Drive Cable 60 Hard Drive Cable Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Keyboard Hard drive Center base cover Floppy drive Daughterboard EMI shield Top case Interconnect to logic bd cable CPU stiffener e Motherboard F Hard Drive Cable lt gt Hard Drive Cable 61 1 Turn over the motherboard 2 Disconnect the hard drive cable from the motherboard Hard Drive Cable lt u gt R
35. t p lo Take Apart Backup Battery 70 2 Carefully disconnect the backup battery cable 3 Remove the cable from the cable guides 4 Pry up and remove the backup battery and cable Trackpad Assembly 71 Assembly Trackpad Assembly Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Keyboard Hard drive Center base cover Floppy drive Top case quip Trackpad Assembly 72 1 Disconnect the backup battery cable 2 Using a T 8 torx driver remove the front two mounting screws o Take Apart Trackpad Assembly 73 3 Note The trackpad cable assembly includes the display actuator switch and the trackpad button Trackpad Cable Assembl Disconnect the trackpad cable assembly and remove it from the unit Replacement Note Recon nect the backup battery cable before reconnecting the trackpad cable assembly Replacement Note Before securing the two screws make sure the flex cable routes on top of the Trackpad Cabl rackpad Cable assembly Assembly Connector o Take Apart Trackpad Assembly 74 4 Using a T 8 torx driver Trackpad Actuator remove the remaining two mounting screws 5 Pry up and remove the trackpad actuator assembly Trackpad Assembly 75 6 With your fingers push up from underneath the trackpad logic board and remove it from the top case Trackpad Logic
36. ter is connected 2 Disconnect external SCSI devices 3 Check hard drive cable connection 4 Use HD SC Setup to reinitialize drive 5 Replace hard drive cable 6 Replace hard drive 7 Replace motherboard lt a gt E Troubleshooting After you connect external SCSI device computer does not boot Symptom Charts Peripheral 17 Peripheral 1 Switch on external SCSI device before starting computer 2 Check cable connections 3 Verify that SCSI chain is terminated correctly 4 Verify that SCSI select switch setting on external device is unique Verify operation of internal hard drive Try known good external SCSI device 7 Replace motherboard num quip E Troubleshooting Cursor does not move when you are using trackpad Symptom Charts Peripheral Continued 18 Peripheral Continued 1 Reset the power manager Check trackpad connections 3 Check interconnect board keyboard and motherboard connections 4 Connect low power mouse and try to move cursor If cursor moves try using trackpad and keyboard If trackpad does not move cursor replace trackpad If keyboard does not move cursor replace keyboard 5 Replace interconnect board 6 Replace motherboard N quip E Troubleshooting Cursor intermittently does not move or moves erratically Cursor does not move when you are using mouse Symptom Charts Peripheral Continued 19 Peripheral Continued Reset the power manager Clean tr
37. tery Battery PCMCIA Module Before you begin discon nect the power adapter Note This procedure covers removal of the main battery second battery or PCMCIA expansion module and battery contact cover Important Before removing the battery use the Macintosh Shut Down command Otherwise all RAM contents will be lost lt gt Battery PCMCIA Module 2 Release Button Caution The Macintosh PowerBook 550c contains devices that are very susceptible to ESD damage To prevent damage wear a grounding wriststrap Review the ESD precautions in Bulletins Safety 1 Slide the release button toward you and pull out the main battery on the right side of the computer N Repeat the procedure for the second battery if installed on the left side of the computer quip Battery PCMCIA Module 3 Battery Bezel 3 Note The battery bezel includes a separate latch and latch spring Remove the bezel carefully so these parts do not fall out If you are replacing the battery bezel pry up both ends of the bezel and lift it off the main battery Replacement Note Make sure the battery bezel latch spring is com pressed against the end of the battery before replacing the bezel lt gt fa Take Apart Battery PCMCIA Module 4 Battery Contact Cover 4 If you are replacing the battery contact cover press in on the sides of the cover and slide it off the main batt
38. tery 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 The following are guidelines for properly handling the Macintosh PowerBook 550c battery e Handle the battery carefully Do not drop puncture disassemble mutilate or incinerate it e Do not short circuit the battery terminals Do not leave a battery in the computer for longer than a week without plugging in the power adapter Do not leave the battery in hot locations such as the trunk of a car lt p Battery Information 10 Keep the battery in a cool dark place do not store it for longer than 6 months without recharging If you are using one battery Completely discharge and then recharge the battery once every 90 days If you are using two batteries Swap the left and right batteries every month Fully charge a replacement battery before using it Apple ships batteries in a partially charged state lt u gt Service Source Specifications Macintosh PowerBook 550c lt u gt E Specifications Processor 1 Processor CPU Motorola 68040 microprocessor 66 33 MHz Addressing 32 bit internal registers 32 bit address bus 32 bit data bus lt u gt Memory 2 ROM PRAM VRAM Clock Calendar Memory 4 MB RAM installed on the daughterboard Expandable to 12 MB with 8 MB Apple RAM expansion card Expandable
39. to the connector Te Caution When installing the card press down on the edge directly above the connector Be careful pts ee po RAM Card 3 not to apply pressure to any components or you may permanently damage the card Place the edge of the RAM card in the two guides Using the RAM card alignment tool for correct positioning connect the card to the ene pete expansion connector on Ae the daughterboard EL RAM Card Guides RAM Card 4 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 soldered RAM plus the RAM on the expansion card If the memory size is incorrect replace the expansion card If the memory size is still incorrect send the computer to Apple lt u gt Modem and DAA Cards 5 DAA Card Modem and DAA Cards Before you begin remove the following Battery PCMCIA module Clutch covers Display access cover Display assembly Keyboard Hard drive Center base cover Floppy drive Daughterboard EMI shield Top case Interconnect to logic board cable quip Modem and DAA Cards 6 e CPU stiffener e RAM card if installed Note The modem is a Macintosh PowerBook 550c option This procedure explains how to install the modem and DAA cards and also includes s
40. ule in the computer s Control Strip Keep the protective cap that comes with the module and place it back on the module when it is not in use Do not open the module or insert anything other than a PCMCIA card into the card slots Keep the module in a safe place away from small objects that might fall into it Before ejecting a PCMCIA card make sure nothing is blocking the card s slot To immediately reinsert the card pull it out an inch more and then push it back in Use only cards that are compatible with the PCMCIA expansion module Refer to the compatibility information that came with the card lt u gt Battery Information 8 Battery Information The Macintosh PowerBook 550c includes two nickel metal hydride NiMH batteries Each battery provides power for up to 3 5 hours of work time depending on the battery conservation features employed A smart processor included in each battery pack indicates the battery s charge status For instructions on how to verify the battery voltage see the Additional Procedures chapter of this manual For additional information on PowerBook batteries voltages ampere hours and part numbers see the PowerBook Battery Matrix in Hardware Compatibility Charts quip Battery Information 9 Battery Handling Awarning NiMH batteries contain toxic materials Send undamaged dead batteries to Apple for recycling do not discard dead batteries with other waste If the bat
41. ut down Symptom Charts Peripheral Continued 22 Peripheral Continued 1 Verify that System is 7 1 1 or later 2 Verify that Chooser and Control Panel settings are correct 3 Check cables 4 Replace printer cable 5 Try known good printer If printer works troubleshoot network Replace daughterboard 7 Replace motherboard o gt Replace motherboard quip Troubleshooting Symptom Charts Peripheral Continued 23 Peripheral Continued Device connected to external modem port doesn t work 1 Verify that External Modem is selected in CDEV 2 Verify that System is 7 1 1 or later 3 Check cables 4 Test device with known good computer 5 Replace daughterboard 6 Replace motherboard I O devices are 1 Verify that System is 7 1 1 or later unrecognized or 2 Check cables garbage is 3 Verify that SCSI device is correctly terminated transmitted or 4 Verify that SCSI select switch setting on external device is received unique 5 Test device with known good computer 6 Replace daughterboard 7 Replace motherboard lt a gt E Troubleshooting Internal modem options do not appear in CDEV Modem does not respond properly to AT command set instructions Symptom Charts Internal Modem 24 Internal Modem AWD gt a AUN Verify that System is 7 1 1 or later Reseat modem card Replace modem card Replace motherboard Verify that baud rate and data format settings of commun
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