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4 Replacement Procedures 4.31 Addendum
Removing the board assembly, tape pad sheet, light guide, cover bottom and lamp
assembly
12. Remove the board assembly (1).
CAUTION: This process should be made in the clean room with no scratch nor particle
on the Polarize and B/L assembly .
13. Remove the tape pad (2) used for sheets fixing.
14. Remove the sheets and light guide (3).
CAUTION: No penetration of foreign body is indispensable with no scratch on the
surface of each sheet.
15. Remove the screw and cover bottom (4).
CAUTION: Maximum value of torque with screw should be below 2.0kgf.cm
16. Disconnect the low voltage wire from mold frame and disassembly of the lamp
assembly from mold frame (5).
CAUTION: Pressure or stress should not be given on this wire.
Glue or foreign body of the double tape should not be attached in the mold
frame.
4-212 Satellite A20 Maintenance Manual (960-444)