Service Cover Removal; Electrical Chassis Removal - Mitsubishi Electric WD-73640 Technical Training Manual

Service Cover Removal

1. Remove screws (A) indicated on the Service Cover by the arrows
2. Remove the Service Cover in the direction indicated.

Electrical Chassis Removal

1. Disconnect all cables connecting to the chassis.
2. Remove screw (B).
3. Slide the chassis up and out of the cabinet.
Note: After replacing either the Electrical Chassis or PWB-MAIN,
see Data Transfer section and perform the following procedures:
1. Restore Engine Data From Backup
2. Restore Geometry Data From Backup.
3. Restore ISF Settings From Backup (Only if backup USB
memory device is available).
IMPORTANT REPLACEMENT NOTE: If the customer has sub-
scribed to VUDU (Internet program provider), the customer must be
instructed to contact VUDU to re-activate their account after a re-
placement CHASSIS or PWB-MAIN has been installed. The original
part cannot be installed in another TV. It must be returned to Mitsu-
bishi per policy.
(For Light Source Unit and Optical Engine Replacement)
B
ELECTRICAL
CHASSIS
16
SERVICE
COVER
A