When displaying a single color over the screen area the LCD panel shows one or more pixels that are not properly lit

To determine whether or not the display has an acceptable number of pixel anomalies, follow the steps below 1. Set the display image to one of the following colors all-white display, all-red display, all-green display, or all-blue display. Knowledge Base article 112125 Service Diagnostics Matrix, has the LCD Tester Diagnostic Utility that will generate these patterns on the screen. 2. Using a jeweler's loupe, pocket microscope, or other magnifying device, identify and count each pixel anomaly...

No modem dial tone

Check that the correct modem is selected in the Network Port Configuration section of the Network system preferences. 2. Verify known-good analog (not digital) telephone line. 3. Verify known-good RJ-11 telephone cable. 4. Verify RJ-11 cable is not plugged into Ethernet port. 5. Inspect RJ-11 connector and modem port for pin damage. 6. Verify RJ-11 telephone cable is firmly installed in the modem port. 7. If using Apple Remote Access, select Ignore Dial Tone in the Modem control panel. If the...

Internal hard drive will not initialize

For the PowerBook G4 17-inch Double-Layer SD , only, make sure the hard drive is a cable select drive set as a master 0 . Using previous Apple hard disk drives in this machine may cause problems at start up. 2. Start up from the software install and restore disc that came with the computer hold down the C key during restart . 3. When the Installer opens, from the Installer menu, select Open Disk Utility. 4. If the hard drive is recognized, format it under the Erase tab. 5. If the hard drive...

For Other Power Books

Warning Flex cables for the sound board, and the modem, must be marked with POWERBOOK 17 1.33GHz ONLY or POWERBOOK G4 17 1.33GHz OR GREATER, or the logic board will be damaged. These cables are NOT interchangeable with cables from the PowerBook G4 17-inch . Bluetooth antenna cable to diversity board in display panel assembly AirPort Extreme antenna cable to diversity board in display panel assembly Sound in Sound out Internal speaker Internal microphone Sleep light Left speaker Right speaker...

Wire and Flex Cables

With the very thin enclosure design and dispersed circuit board, a large number of flex cables are used in this computer. In addition, there are a variety of wire cable harnesses as well. Many of these cables carry multiple types of signals. In the case of the DC-in board flex cable the cable is forked with one path going to the Bluetooth board and the other to the DC-in board. Here is a list of the cables and the signals that run across them. If you notice a group of functions not working, it...

Three Different Keyboards

Three different keyboards, two instruction sets The PowerBook G4 17-inch Double-Layer SD and PowerBook G4 17-inch 1.67GHz use a similar keyboard assembly and the take apart instructions are the same. The PowerBook G4 17-inch 1.5GHz and PowerBook G4 17-inch 1.33GHz use a different keyboard type. Important Keyboards are not interchangeable. Verify that the correct replacement keyboard is ordered, and or top case if replacing. See the appropriate computer model heading. below.

Sleep indicator Power Book G inch Double Layer SD

Starting with the PowerBook G4 Double-Layer SD models, the sleep indicator light in the lid button has a new behavior during startup. When you first turn the PowerBook G4 on, the sleep indicator will turn on. As the computer starts up, the indicator stays on until the display turns on. This light can be used as a diagnostic to determine at startup whether the main logic board is getting power. This new indicator will help troubleshoot dead unit issues versus no video issues If you see the sleep...

Apple Service Diagnostic ASD

Apple Service Diagnostic

MacTest Pro software does not work on this computer since the PowerBook G4 17-inch and forward are Mac OS X only systems. ASD is the replacement and can be downloaded from Knowledge Base article 112125 Service Diagnostics Matrix. Important ASD 2.6.3 is backwards compatible to the PowerBook G4 1GHz 867MHz and later. Apple Service Diagnostic Main screen Apple Service Diagnostic Select Tests tab Apple Service Diagnostic Select Tests tab Apple Service Diagnostic Hardware Info tab f f Test Controls...

Apple Hardware Test AHT Notes

Apple Hardware Test

Starting with Apple Hardware Test 2.5.2, the customer must first select a language. Starting with the PowerBook G4 17-inch , the Apple Hardware Test software will be incorporated into the Software Install and Restore DVD. There is no separate CD for this diagnostic. Currently, the test image is now posted on Service Source online. Apple Hardware Test 2.0.1 and later is not backward compatible with PowerBook computers prior to the PowerBook G4 1GHz 867MHz ....

A USB port is not recognizing devices

Completely shut down, then press the power button to start the computer. 2. Use Software Update system preferences to verify that the latest software is installed. 3. For USB, test ports with an Apple keyboard or mouse. If the left port is not recognized check the DC-in flex cable's condition and connection. If the right port is not recognized check the right USB flex cable's condition and connection. 4. If the USB flex cables are fine, replace the DC-in board for the left USB port or the...

Zero Insertion Force Connectors

Zero insertion force ZIF connectors are used in several locations in the computer. Important The locking bar on the ZIF connector is extremely fragile and is not intended to separate from the connector. When releasing a bar, use extreme care and a restrained light pressure to move the bar only slightly. Warning If a locking bar breaks, you will need to replace the board. Use a flat-blade tool to move the bar on both sides. Make sure the locking bar is released, then slide the end of the flex...

Fire Wire port is not recognizing devices

Test the FireWire 400 and FireWire 800 ports by connecting to another computer using FireWire Target Disk Mode. Refer to Knowledge Base article 58583 How to Use FireWire Target Disk Mode. Important When in FireWire Target Disk Mode, use only one FireWire port at a time. Otherwise you risk corrupting the internal hard drive volume. 2. Verify that drivers are installed properly for third party, if needed. 3. Make sure the cables are firmly attached. 5. If self powered make sure that the power...

A USB device not recognized by computer

Note If you are trying to use a serial device with a USB Serial adapter, check with the manufacturer of the adapter for compatibility. 1. Completely shut down, then press the power button to start the computer. 2. Verify current driver for the device is installed. 3. If a camera, turn on camera after initiating download with camera application. 5. Try different USB device on same port. 6. Eliminate chain by plugging in only one peripheral. 7. Try known-good Apple USB keyboard or mouse to verify...

Pmu Nmi and Pmu Reset pads on logic board

Powerbook Pmu

In addition to the power button pads on the logic board, there are pads for PMU NMI and PMU RESET, which work when their pads are shorted together with a tool like a flat blade screwdriver . The pads are separated with a white horizontal line between the pads. These pads are located about 1cm left of the back left corner of the optical drive.

Power Button pads on logic board

Powerbook Graphics Problems

With the top case removed, the power button is disconnected. Instead of having to reconnect the top case to turn on the system, there are two pads on the logic board that can be shorted across with a tool like a flat blade screwdriver to act as the power button. These pads are located about 5cm left of the back left corner of the optical drive, 1-1 2cm above the notch for the top case flex cable. It is marked POWER BUTTON. The pads are separated with a vertical white line. Note The component...

The battery wont charge

Remove any externally connected peripherals. 2. Try known-good power outlet. 3. Connect known-good 65W power adapter and power cord or plug make sure the DC plug is firmly inserted. The DC plug should light up, if not, replace DC-in board. If the power adapter light is green, turn over the computer and press the battery button. The battery lights should glow green and stay on if the power adapter is operating correctly. Important The Apple 65W Power Adapter is highly recommended be used with...