Toshiba P20 free download

File name P20_part1_.pdf

4.1 General 4 Replacement Procedures 4.1 General This chapter explains how to disassemble the computer and replace Field Replaceable Units (FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart below is a guide to which FRUs need to be removed in order to remove others. Always start by removing the battery pack, next, optional items such as the optional PC Card, then follow the chart downward removing only those FRUs necessary to reach the one you think is causing the computer to operate improperly. Refer to the example on the following page. Battery pack Main Module PC Card Wireless Expansion Modem / LAN Memory CPU Bluetooth Unit Module Unit HDD Top Cover Display Assembly LED / Power Button Board Direct Play Button Board Display Mask System Board FL Inverter Board LCD Module Function Key Board Keyboard Audio Board CIR Board TouchPad Speakers Fan Set Satellite P20 Series Maintenance Manual 4-1 4 Replacement Procedures 4.1 General The example below shows FRUs to be removed before the LED / power button board can be removed and repaired or replaced. The LED / power button board is overlapped by the top cover which must be removed before the LED / power button board can be reached. The top cover is in turn overlapped by the removable main module, HDD and keyboard. Always starts the disassembly process by removing the battery pack. Battery pack Main Module PC Card Wireless Expansion Modem / LAN Memory CPU Bluetooth Unit Module Unit HDD Top Cover Display Assembly LED / Power Button Board Direct Play Button Board Display Mask System Board FL Inverter Board LCD Module Function Key Board Keyboard Audio Board CIR Board TouchPad Speakers Fan Set 4-2 Satellite P20 Series Maintenance Manual 4.1 General Safety Precautions 4 Replacement Procedures Before you begin disassembly, read the following safety precautions and observe them carefully as you work. DANGER: 1. Always use the lithium ion battery pack or backup battery that is authorized by Toshiba or compatible with the unit. Since other battery packs have different specifications, they may be incompatible with the unit, and may burst or explode. Heating or disassembling the battery pack could cause leakage of alkaline solution. Throwing the battery pack into a fire could cause the battery pack to explode. The power supply, FL inverter and other components carry high voltages. To avoid the risk of electric shock when you need to turn on the power of a partially disassembled computer to check its operation, be very careful not to touch connectors or components. Also, do not disassemble individual components in firstlevel maintenance. 2. WARNING: To avoid the risk of electric shock or other injury: 1. Always turn the power off and disconnect the AC adaptor from the power source. 2. Remove any metal jewelry or accessories such as necklaces, bracelets, or rings. Batteries in the computer retain an electrical charge so there is danger of electrical s

File name P20_part2_.pdf

4.15 TOP Cover 4 Replacement Procedures 4.15 Top Cover Removing the Top Cover To remove the top cover, first remove the battery pack, then follow the steps below. 1. Remove the keyboard, HDD and main module. 2. Remove seven M2.5Ч6 screws from the keyboard tray securing the top cover. 3. Detach the following three cables: · LED / power button board FPC · Function key board FPC · TouchPad FPC Fig 4-24: Removing the top cover screws and cables Satellite P20 Series Maintenance Manual 4-45 4 Replacement Procedures 4.15 TOP Cover 4. Turn the computer upside down and remove the following sixteen screws: · Three M2.5Ч3 silver screws · Two M2.5Ч4 black screws · Five M2.5Ч6 black screws · Six M2.5Ч14 black screws Fig 4-25: Removing the screws from the computer underside 5. Turn the computer upright, open the display cover and lift off the top cover. 4-46 Satellite P20 Series Maintenance Manual 4.15 TOP Cover Installing the Top Cover 4 Replacement Procedures To install the top cover, follow the steps below and refer to the figures in the preceding section. 1. Seat the top cover and secure the following three cables: · LED / power button board FPC · Function key board FPC · TouchPad FPC 2. Secure the top cover with seven M2.5Ч6 screws. 3. Turn the computer upside down and secure the following sixteen screws: · Three M2.5Ч3 silver screws · Two M2.5Ч4 black screws · Five M2.5Ч6 black screws · Six M2.5Ч14 black screws Satellite P20 Series Maintenance Manual 4-47 4 Replacement Procedures 4.16 Function Key Board 4.16 Function Key Board Removing the Function Key Board To remove the Function Key Board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard, HDD, main module and top cover. 2. Place the top cover face down. 3. Remove two M2.5Ч3 silver screws securing the function key board. Remove function key board. Fig 4-26: Removing the function key board 4-48 Satellite P20 Series Maintenance Manual 4.16 Function Key Board Installing the Function Key Board 4 Replacement Procedures To install the Function Key Board, follow the steps below and refer to the figure in the preceding section. 1. Feed the function key board FPC through the top cover. 2. Position the function key board and secure with two M2.5Ч3 silver screws. Satellite P20 Series Maintenance Manual 4-49 4 Replacement Procedures 4.17 LED / Power Button Board 4.17 LED / Power Button Board Removing the LED / Power Button Board To remove the LED / Power Button Board, first remove the battery pack, then follow the steps below. 1. Remove the keyboard, HDD, main module and top cover. 2. Place the top cover face down. 3. Remove four M2.5Ч3 silver screws securing the LED / power button board. Remove LED / power button board. Fig 4-27: Removing the LED/power button board 4-50 Satellite P20 Series Maintenance Manual 4.17 LED / Power Button Board Installing the LED / Power Button Board 4 Replacement Procedures To install the LED / Power Button Board, f

File name P20_part3_.pdf

4 Replacement Procedures 4.27 Display Mask 4.27 Display Mask Removing the Display Mask To remove the display mask, first remove the battery pack, then follow the steps below. 1. Remove the main module, HDD, keyboard, top cover and display assembly. 2. Remove six mask seals to expose six screws securing the display mask. 3. Remove two M2Ч3 screws from the top of display assembly and another four M2.5Ч6 screws that were covered by the mask seals. Fig 4-44: Removing the display mask screws 4-76 Satellite P20 Series Maintenance Manual 4.27 Display Mask 4 Replacement Procedures 3. A total of 18 snaps secure the display mask. Carefully insert your fingers between the mask and the LCD panel and pry open the snaps. Start with the four snaps at the top of the display mask. Continue unsnapping the display mask along the two sides (five snaps on each side), and the bottom edge (four snaps). Installing the Display Mask To install the display mask, follow the steps below and refer to the figures in the preceding section. 1. Seat the display mask and secure the snaps on each side. 2. Secure the display mask with two M2Ч3 screws at the top of display assembly and another four M2.5Ч6 screws nearer the base. 3. Cover the six secured screws with mask seals. Satellite P20 Series Maintenance Manual 4-77 4 Replacement Procedures 4.28 FL Inverter Board 4.28 FL Inverter Board Removing the FL Inverter Board To remove the FL inverter board, first remove the battery pack, then follow the steps below. 1. Remove the main module, HDD, keyboard, top cover, display assembly and display mask. 2. Remove one M2x3 screw securing the LCD cable. 3. Remove one M2x3 screw securing the FL inverter board. 4. Lift up the FL inverter board and detach the FL cable and HV cable. Remove the FL inverter board. Fig 4-45: Removing the FL inverter board 4-78 Satellite P20 Series Maintenance Manual 4.28 FL Inverter Board Installing the FL Inverter Board 4 Replacement Procedures To install the FL inverter board, follow the steps below and refer to the figure in the preceding section.. 1. Connect the FL cable and HV cable to the FL inverter board. 2. Seat the FL inverter board and secure it with t one M2x3 screw. 3. Secure the LCD cable with one M2x3 screw. 4. Install the display mask, display assembly, top cover, keyboard, HDD, main module and battery pack. Satellite P20 Series Maintenance Manual 4-79 4 Replacement Procedures 4.29 LCD Module 4.29 LCD Module Removing the LCD Module To remove the LCD module, first remove the battery pack, then follow the steps below. 1. Remove the main module, HDD, keyboard, top cover, display assembly, display mask and FL inverter board. 2. Remove six M2.5Ч6 screws securing the LCD module. 3. Lift the LCD module out of the LCD cover. Fig 4-46: Removing the LCD module 4-80 Satellite P20 Series Maintenance Manual 4.28 FL Inverter Board 4 Replacement Procedures 4. Remove eight M2Ч3 screws securing the LCD bracket (the number of bracket sc