Heatsink

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness & Speaker Grill Left & Right Clutch Covers Note The heat transfer sponge on the heatsink is tacky keep it clean so it does not pick up dust from the workspace. 1 Detach the infrared cable from the logic board and slide the cable from under its tab on the CPU stiffener. 2 Remove the 2 interchangeable screws from the heatsink. 3 Lift the heatsink off and set it aside, insulator side-up.

Display Assembly

Before you begin, remove the following fff Left & Right Clutch Brightness & Speaker Grill 1 Gently disconnect the display cable from the logic board. 2 Remove the 2 interchangeable screws from the metal clutches. 3 Lift off the display assembly. To prevent tearing the display cable, make sure the screw hole on the cable aligns with the screw hole on the clutch. Perform this test to confirm you installed the display assembly correctly Try to insert a 3.5 diskette between the closed...

Power Book Display Cable Gasket Installation and

Issue The display cables on some PowerBook 3400 computers have been working loose from their logic board connections. The customer-reported symptoms related to this issue include no display image or backlight while the computer is running. Solution The solution in the 8 97 Hot Issue was to install a foam gasket to the underside of the brightness and speaker grill to keep the cable connector in place. In fact, the foam gasket is not available as a service part and cannot be ordered separately....

Logic Board

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness & Speaker Grill Left & Right Clutch Covers Ethernet or Ethernet Modem Card To avoid damage to its pins, lift the PCMCIA switch board straight up and off. 3 Using your fingers, disconnect the LED connector and gently guide the cable out of its 5 tabs on the CPU stiffener. 4 Lift off the air flow deflector, if present. (Note The PowerBook G3 does not include an air flow deflector.) 5 Using your fingers,...

PC Card Handling

Two PC Card slots (also known as PCMCIA slots) are featured in the PowerBook 3400c and G3 computers. The two slots accept a variety of third-party PC Cards with 68-pin connectors. There are three types of PC Cards Type I (3.3 mm), Type II (5 mm), and Type III (10.5 mm). Type I and Type II cards fit in either the upper or lower slot of the PC Card unit. Type Ill cards can only be placed in the lower slot. When a Type lll card is in the lower slot, the upper slot cannot be used. The following are...

Hard Drive

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness & Speaker Grill Left & Right Clutch Covers 1 Remove the 3 interchangeable screws that connect the hard drive bracket to the CPU stiffener. 2 Lift up the bracket until you feel a slight resistance. (The hard drive cable is attached to the logic board near the middle of the bracket.) 3 Turn the hard drive bracket so that it rests in front of the computer. 4 Pull the hard drive cable straight up to disconnect...

Display Cable

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Left & Right Clutch Covers Brightness & Speaker Grill is only necessary to disconnect the display cable from the inverter board, not remove the inverter board. (Review the precaution for this step in the Inverter Board chapter.) Kapton Note Because it is difficult aluminum, where specified, lines) r 1 Using a swizzle stick, pry up the 4 pieces of kapton tape from the flaps of the display shield. Disconnect the display...

Power Book Modem Driver Update

Issue Customers may report one of the following problems 1 The modem will not reset following a disconnect. I sometimes have to wait 10 to 30 minutes before I can reconnect to my service provider. Does this happen because the modem is too hot 2 When uploading a file using z-modem protocol I often get multiple errors and my computer freezes or I get a system error. 3 When I am downloading large files (2-2.5 MB) over the modem I often get intermittent disconnects. Solution These problems are not...

Repair Strategy

Service the PowerBook 3400c and PowerBook G3 through module exchange and parts replacement. Customers can request on-site service from an Apple Authorized Service Provider Plus (AASP+) Apple Assurance (US only), or request a courier through the Apple Canada Technical Answerline (Canada only). They can also choose carry-in service from an AASP. Apple Service Providers planning to support the computer systems covered in this manual may purchase Service modules and parts to develop servicing...

Symptom Charts Startup

1 Remove RAM card (if present) and restart computer. If startup sequence is normal, replace RAM card and retest. 2 Reseat RAM card and check connection. Remove floppy drive from media bay and restart computer. lf startup sequence is normal, insert floppy drive and retest. Disconnect hard drive cable and restart computer. lf startup sequence is normal, reconnect cable and retest. Startup failure Upgrade to System Enabler 1.2.1 or later. Refer to Apple Software occurs when using Updates on...

Troubleshooting Flowchart Startup Problems

Boot with Disk Tools Update Driver. 2. Boot with Disk Tools Update Driver. 3. If hard drive appears, reinstall system software. 4. If hard drive doesn't appear,see if Hard Drive Format can reformat it. 5. Replace the hard drive cable. Reset PRAM. Check the trackpad and keyboard cables. Replace the trackpad and keyboard cables. Replace the trackpad. Replace the keyboard. Replace the logic board. Insert a known-good disk into the floppy disk drive and try to initialize it. 1. Replace the floppy...

Infrared Window Board

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness & Speaker Grill Left & Right Clutch Covers Ethernet or Ethernet Modem Card 1 Lift the infrared window off the bottom case. 2 Remove the infrared board from the bottom case. 3 Disconnect the infrared cable from the board. Do not leave fingerprints on the infrared window. Before installing it, clean it with a soft, lint-free cloth. With its notched side down, install the infrared window into its slot on the...

Trackpad

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness & Speaker Grill Left & Right Clutch Covers interchangeable screws that hold the trackpad button in place. Slide the switch board out from the 4 tabs holding it in place. Disconnect the trackpad cable from the trackpad board. Lift the trackpad board out from under the mounting ledge. Replacement Note Note the 2 tiny notches on the trackpad (near the bottom) and how they align with the tabs in the plastics....

Display Housing

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Left & Right Clutch Covers Brightness & Speaker Grill 1 Using a plastic swizzle stick, remove the 2 product name plates from the bezel. 2 Remove the 2 bumpers and 4 interchangeable Screw screws from the bezel. Display Housing I Latches Latch I Latch 3 Starting at the clutch end of the display housing, use a flat-blade Latches , screwdriver to carefully pry the plastics apart at the eight inner latch locations. 4 Lift...

Power Book Battery Gasket Installation

Issue A small number of PowerBook 3400 computers running on battery power have unexpectedly shut down when jostled or when pressure was applied to the battery area. The problem is due to intermittent battery contact. Solution If a PowerBook 3400 exhibits the above problem, Apple recommends adding a foam gasket to the inside of the battery bay to improve battery contact. The gasket is available free of charge in a user-installable kit. To order the kit, customers may call 1-888-273-3594....

Keyboard

Before you begin, remove the following Floppy or CD-ROM Drive Assembly 1 Close the computer and turn it upside down. 2 Remove the 3 interchangeable screws from the bottom case. Caution If you pull the keyboard too far, you will rip the keyboard cables out of their connectors. Pull the keyboard just enough so its 4 interior tabs clear the brightness amp speaker grill. 4 Inserting a flat-blade screwdriver under the front of the keyboard, lift the keyboard slightly up and toward you until you feel...

CPU Stiffener

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness amp Speaker Grill Left amp Right Clutch Covers Ethernet or Ethernet Modem Card Note The alignment guide assembly consists of a metal expansion bay spacer plate and a plastic expansion bay alignment guide. Its removal is not necessary for further take-apart. 1 Insert a flat-blade screwdriver into the opening on the CPU stiffener and slightly lift up the alignment guide assembly. the assembly forward and lift it...

Battery Information

Powerbook Apple

Warning For the main battery, use only the lithium-ion Lilon battery supplied with the computer. Batteries designed for other portable computers may look similar, but they may not work with your computer and may damage it. The Lilon and nickel-metal-hydride NiMH batteries look similar. To distinguish them, Read the label on the battery, which will identify the battery as either Lilon or NiMH. Look for battery indicator lights if the battery has them, it's a Lilon battery. For their main...

Inverter Board

Macbook Backlight Cable

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Left amp Right Clutch Covers Brightness amp Speaker Grill Inverter Backlight Display Frame Connector Connector Note Avoid applying pressure to the display, which could cause the screen to crack. 1 Raise the inverter frame slightly so that it's not touching the display. 2 Using your fingers, disconnect the backlight connector and the display connector. 3 Set the inverter frame aside. 4 Using your finger or a flat-blade...

Floppy Drive Assembly

Note Media bay devices require approximately 7 lb. pull strength. Caution To remove the assembly without damaging it, turn the unit upside down. 1 Slide the release button forward. Caution Grasp the ridged area of the plastics not the metal cover. This prevents bending the metal top case and possibly damaging the drive. 2 Grasp the floppy drive assembly by its ridged area and pull it out of the media bay. Replacement Caution Media bay tolerances are tight. Align media bay devices carefully...

Sleep Actuator

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Brightness amp Speaker Grill Left amp Right Clutch Covers Note Removing the sleep actuator is not necessary for further take-apart. 1 Remove the screw that holds the closure switch in place. Place a flat-blade screwdriver behind the actuator and push the actuator out from the palm rest.

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. 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. 6 To recharge the...

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. 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...

Product Overview

The PowerBook 3400c computer is an all-in-one notebook with several features that greatly increase its performance. Its 603e microprocessor runs at a clock frequency of 180, 200 or 240 MHz. In addition to the 256K L2 cache, the PowerBook 3400c comes with 1 6 MB of RAM and is upgradeable to 144 MB. The system includes a 1, 2, or 3 GB hard drive, optional CD-ROM drive, and standard 1.44 MB floppy drive. And, with its 12.1 display, the screen is larger than previous PowerBook displays. The...

Brightness Speaker Grill

Powerbook 3400c Disassembly

Before you begin, remove the following Floppy or CD-ROM Drive Assembly Note If you are not performing an additional take-apart, it is not necessary to detach the cables of the keyboard. 1 Using a dental pick, detach the brightness amp speaker cable from its connector. 2 Remove the screw from the brightness amp speaker grill. 3 Lift off the brightness amp speaker grill. 4 Using your fingers, disconnect the backup battery connector. Note The backup battery is adhered to the grill with reusable...