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Apple G3, 3400C/200 manual PRAM and Power Manager Reset, Resetting PRAM

Models: 3400C/200 G3

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Additional Procedures	PRAM and Power Manager Reset - 5

PRAM and Power Manager Reset

Caution: Resetting parameter RAM (PRAM) erases the contents of the RAM disk, if there is one. Resetting PRAM also restores the default settings in most control panels. After you reset PRAM, be sure to check any custom settings for the desktop pattern, memory, network, AppleTalk, trackpad, power conservation, and so forth.

Resetting PRAM

Reset/zap PRAM from the shutdown state. Note that resetting PRAM when the computer is shut down also resets the power manager.

Follow these steps to reset PRAM:

1 Unplug the AC adapter.

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Apple G3, 3400C/200 manual PRAM and Power Manager Reset, Resetting PRAM

Contents

PowerBook 3400c/180, 3400c/200, and PowerBook G3 PowerBook 3400c/ PowerBook G3K Service Source K Service Source Hot IssuesPowerBook 3400/G3 Overview PowerBook 3400 Modem Driver Update Solution These problems are not heat-related. To address these situations, Apple has released a modem driver updateSince many users believed these issues were heat-related driver should resolve the issues and prevent needlessPB 3400 Modem Driver Update.img PB 3400 Modem Driver Update Infoinstallation instructions This revision will be supported when it is rolled into thePowerBook 3400 Display Cable Gasket Installation 8/97 and 10/97 PowerBook 3400 Battery Gasket Installation 8/97 customers and can order the kit as service part number 076-0706. The installation is a warranty repairFor instructions on installing the Battery Gasket, see “Battery Gasket Installation” in the Additional ProceduresK Service Source PowerBook 3400c/PowerBook G3Basics PowerBook 3400c Product OverviewBasics Product OverviewPowerBook G3 PowerBook 3400c/200 February ‘97 System ConfigurationsPowerBook 3400c/180 February ‘97 PowerBook 3400c/240 March ‘97 PowerBook G3 November ‘97Repair Strategy OrderingUSA Ordering Repair Strategy Canadian OrderingBasics Canada Only Warranty/AppleCare/ARISUS Only Expansion Bay Drive Light Security Slot Battery View of Front and Right SideVolume Control Sleep Indicator Microphone Stereo Speakers View of Rear and Left Side connectors Logic BoardLogic Board The logic board includesDescription Signals on the Video ConnectorSignal Name Battery Information Main Battery Optional Battery Battery Handling GuidelinesSafety Handle the battery carefully. Do not drop, punctureDo not leave a battery in the computer for longer than a week without plugging in the power adapterPC Card Handling When a Type III card is in the lower slot, the upper slot Card. When the computer is in sleep mode, a PC CardCard unit. Type III cards can only be placed in the lower slot cannot be usedfollow this procedure and try to push the card back in to If you want to use the card again immediately, pull it outabout an inch more and then push it back in. If you don’t use it again, the card will not engage properlyK Service Source PowerBook 3400c /PowerBook G3Speciﬁcations Introduction PowerBook 3400c PowerPC 603e microprocessor running at 180, 200, orPowerBook G3 PowerPC G3 microprocessor running at 250 MHzMemory VRAMMemory 16 MB EDO RAM, expandable to 144 MBFloppy Drive Hard Drives CD-ROM Drives PowerBook 3400c PowerBook G3Disk Storage I/O Interfaces SCSI PC Cards ADBInfrared SerialSound Power Adapter Power adapter portConnector on side panel allows users to attach security device also secures battery and any module in expansion bayExpansion Interfaces Expansion BayExpansion Interfaces SpecificationsI/O Devices Keyboard Trackpad MicrophoneI/O Devices 19-mm vertical and horizontal pitch Integrated, solid-state trackpadVideo DisplayVideo 12.1 diagonal, 800 x 600 active matrix color SVGA thousands ofMain Battery Power Adapter Backup Battery ElectricalElectrical 100-240 VAC line voltage, 50-60 HzDimensions Weight7.2 lb. 3.2 kg with floppy drive installed 7.4 lb. 3.3 kg with CD-ROM drive installedOperating Temperature Storage Temperature Relative Humidity EnvironmentalOperating Altitude Shipping/Non- Operating Altitude EnvironmentalPowerBook 3400c/PowerBook G3 TroubleshootingK Service Source General Symptom Charts StartupReset PRAM error chord sequenceUpgrade to System Enabler 1.2.1 or later. Refer to Apple Software occurs when usingPower Screen Check keyboard and backup battery cables and connections battery, some ControlReplace backup battery Panel settings areVerify that power adapter is connected correctly PowerWhen Shutdown is selected with powerLow-power warning Attach power adapter and recharge batterylow-power backlight or other power-consuming devices. Or, reconnectVideo Display Adjust screen brightness setting Backlight doesn’toperate Verify that backlight cable connection is securemode, reset power manager Insert disk into floppy drive and press Command-e ejectConnect power adapter Note If sleep light is blinking and computer is not in sleepPowerBook shows no Verify monitor using another computerPowerBook shows Thin white line isSound Floppy Drive booting display ejects whileTry known-good system disk DiskSwitch off system and hold trackpad button down while you switch system onDisk does not eject Eject disk manually by carefully inserting opened paper cliperror Read/write/copyTry to format a floppy disk TroubleshootingHard Drive CD-ROM Drive Symptom Charts/CD-ROM Drive Try known-good CD-ROM discpresent, but CD-ROM Check CD-ROM drive cable connections inside CD-ROMPC Card Module PCMCIA System with PC card Replace logic board. performs poorly or hangs during floppy drive operationsTroubleshooting Symptom Charts/PC Card Module PCMCIATroubleshootingSymptom Charts/Infrared Communication Clean infrared window with soft lint-free clothVerify infrared signal is being received by host computer Infrared CommunicationPeripherals Symptom Charts/Peripherals Shut down computer, unplug adapter, and remove battery. Letwhen you are using Connect low-power mouse and try to move cursor. If cursorClean trackpad surface with computer off, using a non intermittentlyNote User must touch trackpad with the surface of only one does not move orTry a known-good low-power mouse. If the known-good mouse works, clean mouse ball and inside of original mousemoves, but clicking trackpadReset the power manager Check keyboard connection by disconnecting and reconnectingUpdate Serial DMA extension to version 2.1 or higher Verify that computer is onKnown Verify that SCSI select switch setting on external device is I/O devices areunrecognized, or garbage isMiscellaneous Troubleshooting Flowchart-Startup Problems Troubleshooting Flowchart-Startup ProblemsTroubleshooting STARTSymptom Charts/Miscellaneous Troubleshooting Flowchart-Startup ProblemsTroubleshooting 2. Boot with Disk Tools Update DriverPowerBook 3400c /PowerBook G3 Take ApartK Service Source Dental pick for opening flex connectors ToolsTake ApartTools Use the following tools for taking apart these computersScrews Take Apart Bottom Case AssemblyBottom Case Assembly Battery BatteryBefore you begin, unplug the power adapter Take Apartthe battery out of the Replacement CautionYou must install the battery before connecting the powerFloppy Drive Assembly Floppy Drive AssemblyNo preliminary steps are required Note Media bay devices require approximately 7 lb. pull strengthassembly by its ridged 1 Slide the release buttonforward Caution Grasp the ridgedMedia bay tolerances are tight Align media bay devices carefully before inserting them into the bayFloppy Drive Assembly Replacement CautionCD-ROM Drive Assembly CD-ROM Drive AssemblyTake Apart No preliminary steps are requiredassembly without damaging Caution To remove theit, turn the unit upside down, as shownCD-ROM Drive Assembly Replacement CautionTake Apart Media bay tolerances are tightBefore you begin, remove the following Battery Floppy or CD-ROM Drive AssemblyKeyboard Take ApartKeyboardKeyboard Close the computer andturn it upside down Remove theKeyboard Open the computerTake Apart Take ApartKeyboard 5 Gently turn the keyboard onto the palm rest Replacement Note As you Take ApartRAM Card Before you begin, remove the following Battery Floppy Drive KeyboardRAM Card RAM Card RAM CardTake Apart Floppy or CD-ROM Drive Assembly Keyboard Brightness Speaker GrillTake ApartBrightness & Speaker Grill Before you begin, remove the following BatteryUsing a dental pick connectorBrightness & Speaker Grill detach the brightnessReplacement Caution Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker Grill Left & Right Clutch CoversTake ApartLeft & Right Clutch Covers Before you begin, remove the following Batteryassembly at 170 from display. Using aassembly Left & Right Clutch CoversReplacement Note Install the palm rest before installing the right & left clutch covers. The tabs on the palm rest fitunder the clutch cover tabs Take ApartPalm Rest Take ApartPalm RestBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker GrillPalm Rest Grasp the right corner ofthe palm rest and pull it Grasp the top ridge of the4 Using a dental pick Replacement Notesdetach the trackpad connectorTrackpad Take ApartTrackpadLeft & Right Clutch Covers Palm Rest Before you begin, remove the following BatteryTrackpad that hold the trackpadbutton in place Take ApartPage Note Use a nonstatic inducing material to clean the trackpad surface, making sure the computer is offTake Apart TrackpadSleep Actuator Take ApartSleep ActuatorBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker Grillholds the closure switch Sleep Actuator1 Remove the screw that in placepins Place a flat-bladescrewdriver behind the actuator and push theHard Drive Take ApartHard DriveBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker GrillHard Drive that connect the harddrive bracket to the CPU stiffenerTurn the hard drive bracket so that it restsin front of the computer Pull the hard drive cableUsing the pull tab Adjust the display so that it sits at an 80 angleRemove the hard drive insulatorPower Supply Board Take ApartPower Supply BoardLeft & Right Clutch Covers Palm Rest Hard Drive Before you begin, remove the following BatteryPower Supply Board Note The connector isof the power supply board connector, grasp the topLeft & Right Clutch Covers Palm Rest Hard Drive Power Supply Board HeatsinkTake ApartHeatsink Before you begin, remove the following Batterytacky keep it clean so it does HeatsinkNote The heat transfer sponge on the heatsink isEthernet or Ethernet/Modem Card Ethernet or Ethernet/Modem CardBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker GrillReplacement Note You Take ApartLogic Board Heatsink Ethernet or Ethernet/ Modem CardBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker Grillpins, lift the PCMCIA switch board straight upDisconnect the display cableUsing your fingers connector and gentlydisconnect the LED guide the cable out of itsdisconnect the fan Slightly pull out the leftside of the bottom case to free the logic boardReplacement Note The CPU Stiffener Take ApartCPU StiffenerBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker GrillDisplay Assembly assembly consists of a metal2 Using your fingers, slide CPU Stiffenerthe assembly forward Note Turn the assemblyand lift it off around to perform the nextfrom the center clutch coverfrom the CPU stiffener Lift off the CPU7 Using your finger, push in the foot lever on eachfoot and release it Take ApartReplacement Notes Insert the foot/spring assembly into its opening on the foot/spring assembly as far as it will go. Letting go of therelease lever locks the assembly into place Before installing the stiffener, make sure 1 the LEDInfrared Window Board Take ApartInfrared Window & BoardBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker Grillfalls out when you remove Infrared Window & BoardEthernet or Ethernet Modem CardReplacement Notes Before installing the CPU stiffener onto the bottom case its 3 holding tabs on the bottom case. Align the notch withthe center tab and push the board back until it snaps into place underneath the window tabMedia Bay LED Release Mechanism Media Bay LED & Release MechanismBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker Grillmedia bay crystal and gently pry up until theLED dislodges Display Assemblymechanism assembly Note The releaseconsists of a spring and plastic “hook and eye.”installed release mechanism Caution The followingstep, which frees the tightly from the bottom case, isMechanism Replacement Install the plastic “eye” onto its round notch on the bottom caseInstall the spring onto its 2 pins on the release mechanism Take ApartCable Replacement Note stiffener is installedGently bend the LED cable to the right so that its con-nector rests outside the bottomADB Door ADB DoorTake Apart No preliminary steps are requiredNote The ADB door is held in place by 2 pins on the bottom case 1 Open the ADB door2 Unhinge one side of the door, then the other 3 Lift off the door Take ApartI/O Door I/O DoorTake Apart No preliminary steps are requiredplace by 2 pins on the Note The I/O door is held in1 Placing a finger on each side of the open I/O doorFront Feet Front FeetNote Removing the front feet is not necessary for further take-apart Take Apart1 With a flat-blade screwdriver, pry up andremove the feet from the grooves in the bottomBottom Case Take ApartBottom CaseBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Brightness & Speaker Grill2 Slide the reset actuator Bottom CaseMedia Bay LED & Release MechanismBefore you begin, remove the following Floppy Drive Assembly Floppy DriveFloppy Drive Take ApartUsing a #6 torx driver remove the 5 screwsfrom the floppy drive Lift the floppy drive outdisconnect the floppy drive cable from thefloppy drive and the floppy drive boardMake sure the metal plate is seated on the bottomReplacement Notes Take ApartInstall the top case Install both ends of thecable into its connectors Holding the assemblyTake Apart Display AssemblyDisplay Assembly Take ApartDisplay Assembly Floppy or CD-ROM Drive Assembly Keyboard Left & Right Clutch CoversDisplay Assembly Before you begin, remove the following BatteryGently disconnect the display cable from thelogic board Display AssemblyReplacement Note from the metal clutchesLift off the display Display Assemblyundertightened. Remove the display assembly and loosen top case. If you can, this indicates the clutch screws arethe screws Display AssemblyDisplay Housing Take ApartDisplay HousingBrightness & Speaker Grill Display Assembly Before you begin, remove the following BatteryDisplay Housing 1 Using a plastic swizzlestick, remove the product name plates2 Remove the 2 bumpers and 4 interchangeablescrews from the bezel Display Housingof the display housing housing3 Starting at the clutch end use a flat-bladeReplacement Note Brightness & Speaker Grill Display Assembly Display Housing LatchTake ApartLatch Before you begin, remove the following Batterydisplay assembly. Removal screws are installedLatch Note It’s a good idea toDisplay Frame Take ApartDisplay FrameBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Left & Right Clutch CoversDisplay Frame from the display frameTake Apart Remove theTake ApartDisplay Frame 2 Using your fingers, disconnect the sleep LED connector3 Using your fingers, disconnect the 2 speaker connectors Using your fingers or a flat-blade screwdriverrelease the 6 tabs frameReplacement Notes wires aligned, install theWrap the cables around their guide posts andInverter Board Take ApartInverter BoardBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Left & Right Clutch Covers3 Set the inverter frame aside Take ApartInverter BoardReplacement Notes Holding the inverter frame slightly above thedisplay, connect the backlight and displayPrecisely align the inverter frame with the“M-shaped” guide line on the display shieldDisplay Frame Inverter Board Note For this procedure it Display CableTake ApartDisplay Cable Before you begin, remove the following BatteryReview the precaution for aluminum, where specified1 Using a swizzle stick Display CableDispose of the tape cable from the displayTake Apart Display CableGently pull the microphone off the bezelPeel back the kapton tape from the “Y” section ofholding pins, slide it to Unwrap the display cablefrom the right clutch Lift the cable off its twoReplacement Notes Display Take ApartDisplayDisplay Frame Inverter Board Display Cable Before you begin, remove the following BatteryDisplay 1 Remove the display fromthe bezel Take ApartDisplay Replacement NotesTake Apart Clutch Take ApartClutchBefore you begin, remove the following Battery Floppy or CD-ROM Drive Assembly Keyboard Left & Right Clutch CoversTake ApartClutch 2 Lift each interchangeable clutch off its pins1 Carefully fold up the clutch grounding tabs on the display shield Bezel Take ApartBezelFloppy or CD-ROM Mechanism Keyboard Left & Right Clutch Covers Display Frame Inverter Board Display Cable DisplayBezel ClutchNote Removal of the LED is only necessary if you arePowerBook 3400c/PowerBook G3 Additional ProceduresK Service Source Battery Verification Additional Procedures Power Adapter Verificationthe level indicator button to activate the indicator lights Backup Battery Verification To recharge the backup battery, leave the PowerBook If the backup battery appears dead or will not chargereplace the backup battery plugged in for 48 hours. It is ok to use it while it isPRAM and Power Manager Reset Resetting PRAMPower on the computer by pressing the Power key Immediately hold down the Option-Command-P-R keysIf the PowerBook emits multiple chimes when you are holding down the Option-Command-P-R keys, skip toAdditional Procedures PRAM and Power Manager ResetResetting the Power Manager Battery Gasket Installation Paper Backing Tacky Surface Wood Applicator GasketBattery Bay PaperBacking Gasketthe battery bay metal surface above it5 Press the gasket onto Additional ProceduresBurnish PowerBook 3400c/PowerBook G3 Exploded ViewK Service Source Bottom & Display Assembly Exploded ViewLogic BoardBottom & Display Assembly Left Display Housing Grill 922-2480 Display 661-1236 CPRC/Intl OnlyDisplay Housing Right Display Housing Grill Display Frame Exploded View