Power Manager Reset
If a unit crashes or experiences power problems, reset the power manager chip by pressing the rear power switch for 30-45 seconds. If resetting the power manager chip does not solve the problem, reset the code for the power manager chip by removing all power sources and letting the unit sit for 10 minutes. Take out the battery and disconnect the AC adapter and the internal backup battery. This forces the PowerBook Duo to reload the power manager code from the system software. RAM failure occurs...
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2 Check logic board cable connections. 6 Replace display CPRC Int'l only . Rainbow colors PowerBook Duo 210 230 visible from extreme Such colors are normal for FSTN screens.
Center Clutch Cover
Disconnect the power adapter Remove the end clutch covers Caution Removing the center clutch cover can exert unnecessary wear and tear on the display cable and plastics. Remove the cover only if you are replacing the CPU stiffener, display assembly, or rear cover. Caution When removing the center clutch cover, be careful not to tear the fragile display cable located beneath the clutch cover. Note The center clutch cover is disposable. If you break or cosmetically damage the cover, replace it....
Hard Drive 1
Disconnect the power adapter Remove the end clutch covers Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins Safety. Caution PowerBook cables are fragile and easily torn or damaged. Handle all cables with care. 1 Remove the three self-threading screws that secure the hard drive to the CPU stiffener. 2 Using an IC extractor, disconnect the hard drive cable. Replacement...
Electrical
NiMH nickel-metal-hydride , 0.95 Ah Approximately 2-4 hours of usage before recharging depending upon use Recharge time approximately 2 hours 500 power cycles capacity Main Battery 250 NiMH nickel-metal-hydride , 1.5 Ah 270c Approximately 2-3 hours of usage before recharging depending upon use Recharge time approximately 2 hours 500 power cycles capacity Uses 4 5 A size battery cells Approximately 2-3 hours of usage before recharging depending upon use Recharge time approximately 2 hours 500...
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Known-good serial printer does not print 1 Verify that System is 7.1 or later. 2 Verify that Chooser and Control Panel settings are correct. 4 Replace printer interface cable. Note When replacing the logic board, check that the EMI clips are securely attached to the CPU stiffener. The CPU Stiffener topic in Take Apart helps you locate and identify the two EMI clips. If both clips are not secure, replace the CPU stiffener.
Trackball
Disconnect the power adapter Remove the end clutch covers Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins Safety. Caution PowerBook cables are fragile and easily torn or damaged. Handle all cables with care. Trackball Assembly Trackball Cable Remove the two self-threading screws that secure the trackball assembly to the chassis. Using an IC extractor, disconnect the...
Backup Battery
Disconnect the power adapter Remove the end clutch covers Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins Safety. Caution PowerBook cables are fragile and easily torn or damaged. Handle all cables with care. 1 Remove the backup battery from the trackball assembly. backup battery cable from the logic board.
c Upgrade 1
Disconnect the power adapter Remove the end clutch covers Remove the center clutch cover Remove the trackball assembly Remove the display assembly Caution The display cable is fragile and should be handled with care. Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins Safety. Case Bottom, CPU Stiffener, and Logic Board Assembly Case Bottom, CPU Stiffener, and Logic Board Assembly Note A PowerBook Duo 280 280c upgrade...
Memory Expansion
Disconnect the power adapter Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. Review the ESD precautions in Bulletins Safety. Holding the DRAM expansion card by the edges, connect the card to the logic board. Note To verify that the upgrade is successful, check the Total Memory message for systems with virtual memory switched off or the Built-in Memory message for systems with virtual memory switched on . The memory size should be 4 MB of DRAM plus the...
Floppy Adapter
No preliminary steps are required before you begin this procedure. Note The PowerBook Duo Floppy Adapter attaches to the 1 52-pin docking connector and provides an external floppy drive HDI-20 port and an ADB port. Replace defective floppy adapters by whole unit exchange. To install the floppy adapter, raise the I O door and push the adapter firmly onto the external 152-pin docking port. Make sure the floppy adapter release button is up. To remove the adapter, depress the release button and...
Series Upgrade
RoverBook Duo 2300 Before you begin, do the following to disassemble the PowerBook Duo 200 being upgraded Remove the main battery. Remove the keyboard Remove the end clutch covers Remove the top case. Remove the hard drive Remove the backup battery Remove the display CPU stiffener assembly Remove the microphone cable, on-off board or modem , and optional RAM from the logic board Caution The PowerBook Duo contains CSMOS devices that are very susceptible to ESD damage. Review the ESD precautions...
Keyboard
Disconnect the power adapter Jeweler's flat-blade screwdriver Duo battery contact alignment tool Caution The PowerBook Duo contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins Safety. Caution PowerBook Duo cables are fragile and easily torn or damaged. Handle all cables with care. Note If you are removing the keyboard only, you do not need to remove the case screw nearest the front of the unit. 1...
Battery Recharger
No preliminary steps are required before you begin this procedure. 1 Using the PowerBook Duo power adapter, plug the battery recharger into a power outlet and insert the main battery into the recharger. Yellow, the battery is charging Green, the battery is ready to use Red, the battery is Type 2 or Type 3 and the recharger is Type 1 the battery will not charge . Or, the Type 2 recharger has not been updated with software for a Type 3 battery see Note below . Off, the recharger is unplugged, the...