User manual SONY VAIO VGN-Z880G/B

[. . . ] SONY may make improvements or changes in the products or the programs described in this publication at any time. It is possible that this publication may contain references to, or information about, SONY products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that SONY intends to announce such SONY products, programming, or services in your country. Requests for technical information about SONY products should be made to your SONY Authorized Dealer or your SONY Marketing Representative. [. . . ] Verify the symptoms by attempting to recreate the failure by running the diagnostic test or by repeating the same operation. Note: To run the diagnostics, refer to "Running the Diagnostics" on page 48 3. Use the following table with the verified symptom to determine which page to go to. Search the symptoms column and find the description that best matches your symptom; then go to the page shown in the "Go to" column. Symptoms (Verified) Power failure. (The power-on indicator does not go on or stay on. ) POST does not complete. No beeps or error codes/messages are indicated. POST beeps, but no error codes are displayed. POST detected an error and displayed numeric error codes. The diagnostic test detected an error and displayed a FRU code. Other symptoms (such as LCD display problems). Symptoms cannot be recreated (intermittent problems). (See "PC-Doctor DOS System Diagnostics" on page 48 for details. ) 2. Follow the instructions in the message window. If an error occurs, reseat the connector on the system board. Replace the system board. Fan Checkout To check the Fan, do the following: 1. (See "PC-Doctor DOS System Diagnostics" on page 48 for details. ) 2. Follow the instructions in the message window. 28 ThinkPad 390X / i 1700 HMM Keyboard and Auxiliary Input Device Checkout Note: Remove the external keyboard if the internal keyboard is to be tested. If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable extending from the keyboard is correctly seated in the connector. If the keyboard cable connection is correct, run the Keyboard Test. (See "PC-Doctor DOS System Diagnostics" on page 48 for details. ) 2. Follow the instructions in the message window. If the test detects a keyboard problem, do the following one at a time to correct the problem. [. . . ] Carefully disconnect the speaker cable from the connector. 2. Remove the five screws securing the speaker. Gently lift the speaker away from the display panel. Step 2 Size (Quantity) M2 x 4L (5) Head & Color Flat head, silver Torque 1. 6 kgf-cm Note: Make sure you use the correct screw for replacement. 94 ThinkPad 390X / i 1700 HMM VR Board 14. 1" "Battery" on page 61 "Hard Disk Drive" on page 62 "Combo Bay" on page 63 "Keyboard" on page 70 "LCD Bezel 14. 1"" on page 93 "Speaker 14. 1"" on page 94 To remove the VR board: 1. Disconnect the power cable from the VR board. 2. [. . . ]