4 Replacement Procedures 4.30 Fluorescent Lamp
4. Remove the board assembly, adhesive tape, light guide and cover assembly bottom
(L).
1) Remove the board assembly.
NOTE: This process should be made in a clean room to prevent scratch or
particle on polarizer or B/L assembly.
2) Remove the adhesive tape fixing the sheets (four points).
3) Remove the sheets and light guide.
NOTE: No penetration of foreign object is indispensable not to scratch on the
surface of each sheet.
4) Remove the two screws fixing the cover assembly bottom (L).
NOTE: Maximum value of torque is 1.5kg
•
cm.
4-138 Satellite A20 Maintenance Manual (960-444)