User manual APPLE POWERBOOK 145 SERVICE MANUAL

[. . . ] K Service Source PowerBook 140/145/ 145B/170 PowerBook 140, PowerBook 145, PowerBook 145B, PowerBook 170 K Service Source Basics PowerBook 140/145/145B/170 Basics Overview - 1 Overview This manual includes complete repair procedures for the PowerBook 140, PowerBook 145 and 145B, and the PowerBook 170. Figure: PowerBook 140, 145, 145B, 170 Basics Display Compatibility Matrix - 2 Display Compatibility Matrix Active Matrix PB 170 661-0711 699-0273 630-6273 936-0106 FSTN, Rev. A PB 140/145 661-0706 699-0271 922-0820 936-0106 FSTN, Rev. B PB 140/145 661-0681 699-0272 630-6272 936-0106 FSTN, Rev. C PB 145/145B 661-0745 922-0025 922-0820 936-0106 Inverter Display Cable Inverter Cable Important: The PowerBook family includes four displays--an active matrix and three FSTN displays. [. . . ] To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins/ Safety. Trackball Assembly Take Apart 1 Locking Tab Trackball Assembly - 20 Caution: The trackball ribbon cable is fragile and should be handled with care. Trackball Ribbon Cable Pull out the locking tab on the trackball connector and remove the trackball ribbon cable. Take Apart 2 Trackball Assembly - 21 Using a T-8 torx driver, remove the two mounting screws and lift the trackball assembly out of the top case. Take Apart Keyboard - 22 Keyboard Before you begin, remove the following: · Main battery · I/O door · Top case · Trackball assembly Caution: The PowerBook140/145/170 contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins/ Safety. Keyboard Take Apart 1 Keyboard - 23 Caution: The keyboard ribbon cables are fragile and should be handled with care. Lift up the locking tabs on the two keyboard connectors and remove the keyboard ribbon cables. Keyboard Ribbon Cables Take Apart 2 Keyboard - 24 Using a T-8 torx driver, remove the seven mounting screws and lift the keyboard out of the top case. Take Apart Inverter Board - 25 Inverter Board Before you begin, remove the following: · Main battery · I/O door · Top case Caution: The PowerBook 140/145/170 contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins/Safety. Inverter Board Take Apart Inverter Board - 26 Important: One activematrix and three FSTN displays are used with the PowerBook 140/145/170 computers. Each display requires a matching inverter. When replacing a display or inverter board, refer to the "Display Compatibility Matrix" in Basics and to Service Source parts database for the correct part number for each board. Take Apart 1 Inverter Shield Inverter Board - 27 If present, remove the inverter shield. 2 Inverter Board Inverter Cable 3 Remove the two screws and pull the inverter board straight up to disconnect it from the interconnect board. Disconnect the inverter cable. Take Apart Inverter Board - 28 Replacement Note: Install inverter shields on all PowerBook 140/145/170 computers. Inverter shields are available on the Price Pages. If you are replacing a defective inverter that has an inverter shield installed, order both the inverter board and the inverter shield. Do not reuse the original inverter shield. Take Apart Brightness Pot Contrast Pot Inverter Board Inverter Board - 29 Replacement Note: For systems with FSTN displays, be sure to align the brightness and contrast pots on the inverter board with the plastic actuators on the top case. It is easiest to align the pots and actuators if you set both to their extreme outer positions. Actuator Actuator Take Apart Interconnect Board - 30 Interconnect Board Before you begin, remove the following: · Main battery · I/O door · Top case · Inverter board Caution: The PowerBook140/145/170 contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins/ Interconnect Board Take Apart Interconnect Board - 31 Safety. The interconnect board contains hazardous materials. Return bad interconnect boards to Apple for proper disposal. ±Warning: J5 Connector J3 Connector 1 Caution: The keyboard and display ribbon cables are fragile. Lift up the locking tabs on connectors J5 and J3 and remove the keyboard ribbon cables. Take Apart 2 Interconnect Board - 32 Pull out the locking tab on connector J2 and remove the display cable. Ferrite Bead Note: If you also plan to remove the display or the display cable, separate the display cable ferrite bead from the top case. You may need to use a small flatblade screwdriver to pry off the ferrite bead. J2 Connector Replacement Note: Connect the display cable before replacing the interconnect board. Take Apart 3 Interconnect Board - 33 Using a T-8 torx driver, remove the two mounting screws and lift the interconnect board from the top case. Take Apart Actuators - 34 Actuators Before you begin, remove the following: · Main battery · I/O door · Top case · Inverter board Caution: The PowerBook140/145/170 contains CMOS devices that are very susceptible to ESD damage. To prevent damage, wear a grounding wriststrap. Review the ESD precautions in Bulletins/ Safety. Actuators Take Apart Actuators - 35 Note: The PowerBook 170 has a brightness actuator only (contrast is preset). The PowerBook 140 has both contrast and brightness actuators. Pull up and rotate the actuator toward the display to remove it from the top case. Take Apart Elevation Feet - 36 Elevation Feet Before you begin, remove the following: · Main battery · I/O door · Top case Elevation Foot Caution: The PowerBook 140/145/170 contains CMOS devices that are very susceptible to ESD damage. [. . . ] 11 Stamp the cable with part number 9360108. Additional Procedures Rev. A Display Before you begin, remove the following: · Main battery · Display CCFL bulbs are thin and break easily. Handle them with care, especially at the delicate solder joints at the ends of the bulbs. ±Warning: Caution: To prevent ESD damage to components, wear a grounding wriststrap. Additional Procedures Rev. A Display Bulb - 24 Review the ESD precautions in Bulletins/Safety. [. . . ]