Apple Macintosh PowerBook 550c Specifiche

Service Source K Macintosh PowerBook 550c This product is forJapan only.

Basics PCMCIA Module Handling - 8 computer will shut down and all RAM contents will be lost.• Eject the PCMCIA module using the lever at the front of

Take Apart Fuse - 43 Fuse Before you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display assembly• Keyb

Take Apart Fuse - 44Using a small flat-blade screwdriver, pry up and remove the fuse.Fuse

Take Apart Interconnect-to-Logic-Bd. Cable - 45Interconnect-to-Logic-Bd. CableBefore you begin, remove the following:• Battery/PCMCIA module• Clutch c

Take Apart Interconnect-to-Logic-Bd. Cable - 46Caution: Before discon-necting the interconnect-to-logic-board cable, note the correct orientation of

Take Apart Side Panels - 47Side PanelsBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display ass

Take Apart Side Panels - 481 Using a T-8 torx driver, remove the right side-panel mounting screw.2 Lift the panel slightly, slide it back, and remove

Take Apart CPU Stiffener - 49CPU StiffenerBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display

Take Apart CPU Stiffener - 50Note: In this take-apart procedure, the CPU stiffener is removed with the side panels attached. This procedure also exp

Take Apart CPU Stiffener - 512 Rotate the feet to the up position.3 Lift the CPU stiffener straight off the unit.CPU Stiffener

Take Apart CPU Stiffener - 52Note: If you are replacing the CPU stiffener, remove the side panels.4 Using a T-8 torx driver, remove the right side-pa

Basics Battery Information - 9 Battery Information The Macintosh PowerBook 550c includes two nickel-metal-hydride (NiMH) batteries. Each battery pr

Take Apart CPU Stiffener - 53Replacement Caution: Make sure both EMI clips fold on top of the clutch pegs. If the right clip accidentally folds back

Take Apart Lifter Feet - 54Lifter FeetBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display ass

Take Apart Lifter Feet - 551 Remove the mounting screw and washer for the right lifter foot, and remove the foot.2 Repeat for the left lifter foot.Lif

Take Apart Motherboard - 56MotherboardBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display ass

Take Apart Motherboard - 571 Remove the motherboard mounting screw and standoff.2 Carefully pry the motherboard from the positioning peg located below

Take Apart Motherboard - 585 If you are replacing the motherboard, discon-nect the RAM card (if installed), daughter-board, and modem card (if install

Take Apart Motherboard - 59Replacement Note: Make sure the front of the motherboard fits securely below the positioning peg on the bottom case.Positi

Take Apart Hard Drive Cable - 60Hard Drive CableBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• D

Take Apart Hard Drive Cable - 611 Turn over the motherboard.2 Disconnect the hard drive cable from the motherboard.Hard DriveCable

Take Apart Rear Door - 62Rear DoorNo preliminary steps are required.Rear Door

Basics Battery Information - 10 Battery Handling ± Warning: NiMH batteries contain toxic materials. Send undamaged, dead batteries to Apple for re

Take Apart Rear Door - 631 Open the rear door.2 Carefully bend the door so that the middle bows downward.3 Unhinge the bottom door pegs and remove the

Take Apart Bottom Case - 64Bottom CaseTo remove the bottom case, remove the following:• Battery/PCMCIA module• Rear door• Clutch covers• Display acces

Take Apart Bottom Case - 65• CPU stiffener• Motherboard

Take Apart Microphone Assembly - 66Microphone AssemblyBefore you begin, remove the following:• Battery/PCMCIA module• Display access coverMicrophoneAs

Take Apart Microphone Assembly - 671 Carefully disconnect the microphone cable from the interconnect board.2 Using a small flat-blade screwdriver, pry

Take Apart Backup Battery - 68Backup BatteryBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Displ

Take Apart Backup Battery - 691 Using a small flat-blade screwdriver, pry up and remove the backup battery cover.Backup Battery Cover

Take Apart Backup Battery - 702 Carefully disconnect the backup battery cable.3 Remove the cable from the cable guides.4 Pry up and remove the backup

Take Apart Trackpad Assembly - 71Trackpad AssemblyBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover•

Take Apart Trackpad Assembly - 721 Disconnect the backup battery cable.2 Using a T-8 torx driver, remove the front two mounting screws.Backup BatteryC

Basics Battery Information - 11 • Keep the battery in a cool, dark place; do not store it for longer than 6 months without recharging.• If you are us

Take Apart Trackpad Assembly - 733 Note: The trackpad cable assembly includes the display actuator switch and the trackpad button.Disconnect the trac

Take Apart Trackpad Assembly - 744 Using a T-8 torx driver, remove the remaining two mounting screws.5 Pry up and remove the trackpad actuator assembl

Take Apart Trackpad Assembly - 756 With your fingers, push up from underneath the trackpad logic board and remove it from the top case.Trackpad LogicB

Take Apart Display Bezel Assembly - 76Display Bezel AssemblyBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display acc

Take Apart Display Bezel Assembly - 771 Remove the microphone from the plastic retainer.2 Disconnect the speaker cable from the interconnect board.3 R

Take Apart Display Bezel Assembly - 784 Pry off the two rubber bumpers.5 Remove the top two bezel mounting screws.Rubber Bumper

Take Apart Display Bezel Assembly - 796 Note: Two hooks on each side of the bezel secure it to the rear housing. Pull the display bezel forward and

Take Apart Display - 80DisplayBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display assembly• D

Take Apart Display - 811 Fold back the display EMI shield from the top and side edges of the display.2 Remove the four mounting screws.3 Disconnect th

Take Apart Display - 826 If you are replacing the display, disconnect and remove the inter-connect-to-display cable from the back of the display.Conne

Service Source K Specifications Macintosh PowerBook 550c

Take Apart Inverter Board - 83Inverter BoardBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Displ

Take Apart Inverter Board - 841 Fold back the display EMI shield from the right edge of the display.2 Remove the inverter board mounting screw.3 Disco

Take Apart Interconnect Board - 85Interconnect BoardBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cove

Take Apart Interconnect Board - 861 Disconnect the interconnect-to- display cable and the interconnect-to-inverter cable.2 Remove the two mounting scr

Take Apart Interconnect-to-Inverter Cable - 87Interconnect-to-Inverter CableBefore you begin, remove the following:• Battery/PCMCIA module• Clutch cov

Take Apart Interconnect-to-Inverter Cable - 881 Disconnect the interconnect-to- inverter cable from the interconnect and inverter boards.2 Remove the

Take Apart Interconnect-to-Display Cable - 89Interconnect-to-Display CableBefore you begin, remove the following:• Battery/PCMCIA module• Clutch cover

Take Apart Interconnect-to-Display Cable - 901 Disconnect the interconnect-to- display cable from the back of the display.2 Remove the cable.Interconn

Take Apart Clutches - 91ClutchesBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display assembly•

Take Apart Clutches - 921 Remove the mounting screw for the right clutch and remove the clutch.2 Repeat for the left clutch.

Specifications Introduction - 1 Introduction You can also find specifications information for this product in the Spec Database, which you can acces

Take Apart Display EMI Shield - 93Display EMI ShieldBefore you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cove

Take Apart Display EMI Shield - 94Remove the display EMI shield from the display rear housing.Display EMI Shield

Take Apart Display Rear Housing - 95Display Rear HousingTo remove the rear housing, remove the following:• Battery/PCMCIA module• Clutch covers• Displ

Service Source K Upgrades Macintosh PowerBook 550c

Upgrades RAM Card - 1 RAM Card Before you begin, remove the following:• Battery/PCMCIA module• Keyboard• Center base cover• Daughterboard EMI shield

Upgrades RAM Card - 2 1 Remove the plastic retainer bar.2 Caution: An incorrectly installed RAM card could damage the daughter-board. Note that th

Upgrades 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 guid

Upgrades RAM Card - 4 Note: To verify that the upgrade is successful, check the Total Memory message (for systems with virtual memory switched off)

Upgrades Modem and DAA Cards - 5 Modem and DAA Cards Before you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access co

Upgrades Modem and DAA Cards - 6 • CPU stiffener• RAM card (if installed) Note: The modem is a Macintosh PowerBook 550c option. This procedure expl

Specifications Processor - 2 Processor CPU Motorola 68040 microprocessor66/33 MHz Addressing 32-bit internal registers32-bit address bus32-bit data

Upgrades Modem and DAA Cards - 7 1 Slide the modem card under the RAM card guides and connect the modem card to the motherboard.2 Pull up and remove

Upgrades Modem and DAA Cards - 8 3 Install the modem port frame on the DAA card.4 Note: The connector for the DAA card is on the underside of the rig

Upgrades Modem and DAA Cards - 9 6 Note: The following page explains how to remove the modem card. To remove the card, you will need to adapt an I

Upgrades Modem and DAA Cards - 10 7 To remove the modem card, place the legs of the IC extractor in the notches at the end of the board and pull up.N

Upgrades PCMCIA Module Upgrade - 11 PCMCIA Module Upgrade Before you begin, remove the second (left) battery. Important: Before removing the batter

Upgrades PCMCIA Module Upgrade - 12 Macintosh PowerBook 550c option. The module comes with a protec-tive cap and PCMCIA driver software. 1 Note:

Upgrades PCMCIA Module Upgrade - 13 2 Note: Refer to the “PCMCIA Expansion Module User’s Guide” for directions on how to install the module softwar

Service Source K Additional Procedures PowerBook 550c

Additional Procedures Power Manager Reset - 1 Power Manager Reset Reset the power manager if• the battery and power adapter are proven good, but the

Additional Procedures Battery Verification - 2 Battery Verification The Control Strip on the PowerBook 500 Series desktop shows the battery charge a

Specifications Memory - 3 Memory RAM 4 MB RAM installed on the daughterboardExpandable to 12 MB with 8 MB Apple RAM expansion cardExpandable to 36

Additional Procedures Battery Verification - 3 negative probe to the negative terminal. 3 A fully charged battery measures approximately 10.8 volts;

Additional Procedures Backup Battery Verification - 4 Backup Battery Verification The backup battery saves the PRAM and power management information

Additional Procedures Backup Battery Verification - 5 6 To recharge the backup battery, leave the PowerBook plugged in for 48 hours. It is ok to use

Additional Procedures AC Adapter Voltage Test - 6 AC Adapter Voltage Test To test the AC adapter voltage:• Use narrow test probes for the leads on y

Service Source K Exploded View PowerBook 550c

Exploded View 1 PowerBook 550cDisplay Bezel Kit076-0516 Display EMI Shield922-1212 Microphone 922-0783Inverter Board 922-1445Interconnect

Specifications Disk Storage - 4 Disk Storage Floppy Drive 15 mm high, internal, 1.4 MB Apple SuperDrive Hard Drive 2.5 in., 750 MB hard drive

Specifications I/O Interfaces - 5 I/O Interfaces SCSI HDI-30 SCSI port with 1.5 MB/sec. transfer rateSupports up to six external SCSI devicesConnect

Service Source K Basics Macintosh PowerBook 550c

Specifications I/O Interfaces - 6 Video Micro DV-14 video-out port; 8 bit, 256 color video outputSupports most Macintosh, VGA, and SVGA monitors Eth

Specifications I/O Devices - 7 I/O Devices Keyboard Built-in keyboard with 12 function keys76 keys domestic, 77 keys ISO Two-level tilt adjustment T

Specifications Sound and Video - 8 Sound and Video Sound Generator Apple sound chip provides 16-bit sound capable of driving stereo headphones or ot

Specifications Electrical - 9 Electrical Main Battery Two nickel-metal-hydride (NiMH) batteriesUp to 3.5 hours of usage per battery before rechargi

Specifications Physical - 10 Physical Dimensions Height 2.25 in. (5.7 cm) Width 11.5 in. (29.2 cm) Depth 9.65 in. (24.5 cm) Weight 7.3 lb. (3.3 kg)

Specifications Environmental - 11 Environmental Operating Temperature 50–104°F (10–40°C) Storage Temperature -13 to 140°F (-25 to 60°C) Relative Hum

Specifications Other - 12 Other Internal Modem Sends and receives data at 19.2 bps; sends and receives faxes at 14.4 bps SCSI Adapter Enables connec

Service Source K Troubleshooting Macintosh PowerBook 550c

Troubleshooting General - 1 General The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. B

Troubleshooting Symptom Charts/Startup - 2 Symptom Charts Startup RAM failure occurs (eight-tone error chord sounds after startup chord)1 Reseat RAM

Basics General Information - 1 General Information The Macintosh PowerBook 550c features a built-in trackpad, intelligent batteries, two battery bays

Troubleshooting Symptom Charts/Power - 3 Power Screen is blank; computer doesn’t respond1 Restart computer.2 Connect power adapter and restart compu

Troubleshooting Symptom Charts/Power (Continued) - 4 Power (Continued) After you remove main battery, some Control Panel settings are different1

Troubleshooting Symptom Charts/Power (Continued) - 5 Power (Continued) Low-power warning appears1 Recharge battery or attach power adapter.2 Veri

Troubleshooting Symptom Charts/Power (Continued) - 6 Power (Continued) Computer won’t power up1 Restart computer.2 Connect power adapter and rest

Troubleshooting Symptom Charts/Video - 7 Video Pixel never comes on or is always on If more than

Troubleshooting Symptom Charts/Video (Continued) - 8 Video (Continued) Display is very light or totally white1 Adjust screen contrast and brightn

Troubleshooting Symptom Charts/Video (Continued) - 9 Video (Continued) Backlight doesn’t operate1 Verify that backlight cable connection is secur

Troubleshooting Symptom Charts/Video (Continued) - 10 Video (Continued) No display, but computer appears to operate correctly1 Press any key to w

Troubleshooting Symptom Charts/Floppy Drive - 11 Floppy Drive Audio and video present, but internal floppy drive does not operate1 Try known-good fl

Troubleshooting Symptom Charts/Floppy Drive (Continued) - 12 Floppy Drive (Continued) Disk does not eject 1 Switch off system and hold trackpad b

Basics Service Strategy - 2 Service Strategy The PowerBook 550c is sold exclusively in Japan. Therefore, the full line of Apple Service and Support o

Troubleshooting Symptom Charts/Floppy Drive (Continued) - 13 Floppy Drive (Continued) Disk initialization fails1 Try known-good floppy disk.2 Che

Troubleshooting Symptom Charts/Hard Drive - 14 Hard Drive Internal hard drive does not operate1 Make sure power adapter is connected.2 Disconnect ex

Troubleshooting Symptom Charts/Peripheral - 15 Peripheral After you connect external SCSI device, computer does not boot1 Switch on external SCSI de

Troubleshooting Symptom Charts/Peripheral (Continued) - 16 Peripheral (Continued) Cursor does not move when you are using trackpad

Troubleshooting Symptom Charts/Peripheral (Continued) - 17 Peripheral (Continued) Cursor intermittently does not move or moves erratically1 Reset

Troubleshooting Symptom Charts/Peripheral (Continued) - 18 Peripheral (Continued) Cursor moves, but clicking trackpad button has no effect1 Reset

Troubleshooting Symptom Charts/Peripheral (Continued) - 19 Peripheral (Continued) Known-good direct-connect printer does not print1 Verify that S

Troubleshooting Symptom Charts/Peripheral (Continued) - 20 Peripheral (Continued) Known-good network printer does not print1 Verify that System i

Troubleshooting Symptom Charts/Peripheral (Continued) - 21 Peripheral (Continued) Device connected to external modem port doesn’t work1 Verify th

Troubleshooting Symptom Charts/Internal Modem - 22 Internal Modem Internal modem options do not appear in CDEV1 Verify that System is 7.1.1 or later

Basics Rear Panel - 3 Rear Panel The illustration below shows the location of ports and connectors on the rear panel of the Macintosh PowerBook 550c.

Troubleshooting Symptom Charts/Internal Modem (Continued) - 23 Internal Modem (Continued) Strange mix of characters appears on screen1 Verify tha

Troubleshooting Symptom Charts/Internal Modem (Continued) - 24 Internal Modem (Continued) Modem does not respond to incoming call1 If computer is

Troubleshooting Symptom Charts/Internal Modem (Continued) - 25 Internal Modem (Continued) Modem connects but does not communicate with remote mod

Troubleshooting Symptom Charts/Internal Modem (Continued) - 26 Internal Modem (Continued) You are using System 7.5 and two messages appear: “Thi

Troubleshooting Symptom Charts/PCMCIA Module - 27 PCMCIA Module PCMCIA card won’t eject1 Make sure PCMCIA slot is not blocked.2 Insert straightened

Troubleshooting Symptom Charts/Miscellaneous - 28 Miscellaneous Screen goes blank and computer shuts down every few minutesComputer is going into sy

Troubleshooting Symptom Charts/Miscellaneous (Continued) - 29 Miscellaneous (Continued) No sound from speaker1 Verify that volume setting in Cont

Service Source K Take Apart Macintosh PowerBook 550c

Take Apart Battery/PCMCIA Module - 1 Battery/PCMCIA Module Before you begin, discon-nect the power adapter. Note: This procedure covers removal of

Take Apart Battery/PCMCIA Module - 2 Caution: The Macintosh PowerBook 550c contains devices that are very susceptible to ESD damage. To prevent da

Basics PowerBook Screw Matrix - 4 PowerBook Screw Matrix Nine different types of screws are used in the Macintosh PowerBook 550c. All are Torx screw

Take Apart Battery/PCMCIA Module - 3 3 Note: The battery bezel includes a separate latch and latch spring. Remove the bezel carefully so these par

Take Apart Battery/PCMCIA Module - 4 4 If you are replacing the battery contact cover, press in on the sides of the cover and slide it off the main b

Take Apart Battery/PCMCIA Module - 5 5 Note: Complete the following step if a PCMCIA expansion module is installed in the computer.Using the tip of

Take Apart Keyboard - 6 Keyboard Before you begin, remove the battery/PCMCIA module.Keyboard

Take Apart Keyboard - 7 1 Using a T-8 torx driver, remove the middle two bottom housing screws.

Take Apart Keyboard - 8 2 Using a small flat-blade screwdriver, lift the front of the keyboard and pull it forward slightly.3 Rotate the keyboard so

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

Take Apart Hard Drive - 10 Hard Drive Before you begin, remove the following:• Battery/PCMCIA module• KeyboardHard Drive

Take Apart Hard Drive - 11 1 Using a T-8 torx driver, remove the hard drive mounting screw.

Take 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.3 Note: Use a r

Basics PowerBook Screw Matrix - 5 Legend for Macintosh PowerBook 550c Screws 1 Feet2 Hard drive, keyboard, bottom case (middle front), display assemb

Take Apart Hard Drive - 13 5 If you are replacing the hard drive, remove the four screws and remove the hard drive bracket and insulator. Replacement

Take Apart Clutch Covers - 14 Clutch Covers Before you begin, remove the battery/PCMCIA module.Clutch Cover Clutch Cover

Take Apart Clutch Covers - 15 1 Open the unit and rotate the display assembly as far back as it will go.2 Using a flat-blade screwdriver and your fin

Take Apart Clutch Covers - 16 Replacement Caution : Be careful not to pinch or rip the display cable when you replace the right clutch cover.

Take Apart Display Access Cover - 17 Display Access Cover Before you begin, remove the battery/PCMCIA module.Display Access Cover

Take Apart Display Access Cover - 18 1 Open the unit and rotate the display assembly as far back as it will go.2 Using a small flat-blade screwdriver

Take Apart Display Assembly - 19 Display Assembly Before you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover

Take Apart Display Assembly - 20 Caution: Support the display assembly from beneath before removing it.1 Open the unit and rotate the display assem

Take Apart Display Assembly - 21 interconnect-to-logic- board cable.5 Remove the display assembly.

Take Apart Center Base Cover - 22 Center Base Cover Before you begin, remove the following:• Battery/PCMCIA module• Keyboard Center Base Cover

Basics PowerBook Cable Matrix - 6 PowerBook Cable Matrix For a matrix of cables that work with specific models of the PowerBook family of computers,

Take Apart Center Base Cover - 23 1 Using a T-8 torx driver, remove the two rear panel screws. Replacement Caution: When replacing the rear panel s

Take Apart Center Base Cover - 24 2 Pull the center base cover forward slightly and slide it 1/2 inch to the right to release the two screw carriers.

Take Apart Floppy Drive - 25 Floppy Drive Before you begin, remove the following:• Battery/PCMCIA module• Keyboard• Center base coverFloppy Drive

Take Apart Floppy Drive - 26 1 Using a T-8 torx driver, remove the two floppy drive screws.

Take Apart Floppy Drive - 27 2 Using a small flat-blade screwdriver, pry up the cable end of the floppy drive and slide the drive 1/2 inch to the lef

Take Apart Floppy Drive - 28 Replacement Caution: Before disconnecting the floppy drive cable from the drive, note the cable folds and the correct

Take Apart Floppy Drive - 29 5 If you are replacing the floppy drive or floppy drive cable, release the locking tabs and disconnect the cable from th

Take Apart Floppy Drive - 30 6 If you are replacing the floppy drive, remove the two right bracket screws and remove the right bracket.7 Remove the t

Take Apart Floppy Drive - 31 Replacement Note: Reinstall the floppy drive brackets and floppy drive cable on the replacement floppy drive. Use the

Take Apart Floppy Drive - 32 Replacement Caution: If the brackets are not pushed toward the top of the floppy drive, the floppy disk may not eject

Basics PCMCIA Module Handling - 7 PCMCIA Module Handling The PCMCIA (Personal Computer Memory Card International Association) expansion module is an

Take Apart Daughterboard EMI Shield - 33 Daughterboard EMI Shield Before you begin, remove the following:• Battery/PCMCIA module• Keyboard• Center ba

Take Apart Daughterboard EMI Shield - 34 1 Remove the three mounting screws.2 Using a small flat-blade screwdriver, pry up and remove the daughterboa

Take Apart Daughterboard - 35 Daughterboard Before you begin, remove the following:• Battery/PCMCIA module• Keyboard• Center base cover• Daughterboar

Take Apart 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

Take Apart Daughterboard - 37 2 Remove the plastic retainer bar.3 Note: The daughterboard is connected to the motherboard below the RAM card connec

Take Apart Top Case - 38 Top Case Before you begin, remove the following:• Battery/PCMCIA module• Clutch covers• Display access cover• Display assemb

Take Apart Top Case - 39 1 Rotate the feet to the up position.2 Using a T-8 torx driver, remove the screw located under each foot.3 Remove the four s

Take Apart Top Case - 40 4 Remove the remaining screw on the inside top edge of the case.

Take Apart Top Case - 41 5 Caution: The top case is connected to the motherboard by the trackpad cable. Be careful not to lift the top case too fa

Take Apart Top Case - 42 6 Remove the interconnect-to-logic board cable from the opening for the right clutch.7 Remove the top case. Replacement Note