Specifications
Table Of Contents
- PowerBook 190/5300 Series
- Basics
- Specifications
- Troubleshooting
- Take Apart
- Introduction
- Before You Begin
- Battery
- Floppy Drive
- I/O Door
- Front Feet
- Rear Feet
- Keyboard
- RAM Card
- Clutch Covers
- PC Switch Board (PCMCIA)
- Display Assembly
- Palm Rest
- Sleep Actuator
- Trackpad
- Hard Drive
- Power Supply Board (5300 Series Only)
- Backup Battery
- Heat Sink
- Video Board (Optional on 190 Series)
- Logic Board
- CPU Stiffener
- Infrared Board (Optional on 190 Series)
- Media Bay LED
- PC Card Door (PCMCIA)
- Video Expansion Cover (Optional on 190 Series)
- Reset Actuator
- Sound-In Cover (190 Series Only)
- Media Bay Release Mechanism
- Display Housing
- Inverter Board
- Display
- Microphone
- Speaker
- Clutches
- Floppy Drive Mechanism
- Upgrades
- Additional Procedures
- Exploded View
Additional Procedures Backup Battery Verification - 8
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.