EH-TW8000/TW9000/TW9000W Troubleshooting CONFIDENTIAL
SEIKO EPSON 26 Revision A
2.3 Exterior Check
When repairing this product, carry out exterior check of the target parts/units as
necessary.
Check Items
2.3.1 Parts Layout Diagrams
The following are the diagrams to confirm and locate the parts and/or components to be
repaired. The parts name used here indicate the references linked to the page titles for
their disassembling procedures.
Target part Check item
Upper Case
Any damage/deformation/cracking due to external
forces?
Any foreign object/dirt on IR receiver?
Any foreign object/dirt on LED indicators?
Is it fixed to Lower Case, Front Case and Rear Case
correctly?
Front Case
Any damage/deformation/cracking due to external
forces?
Any foreign object/dirt on IR receiver?
Any dirt/foreign materials?
Is it fixed to Upper Case and Lower Case correctly?
Rear Case
Any damage/deformation/cracking due to external
forces?
Is it fixed to Upper Case and Lower Case correctly?
Control Panel (SW Board)
Is it fixed to Lower Case correctly?
Any stuck buttons?
Do buttons work smoothly?
Control Panel Cover
Any damage, deformation, or cracking?
Is it fixed to Lower Case correctly?
Is it open/close smoothly?
Lamp Cover
Is it fixed to Upper Case correctly?
Any damage on the latch to operate the Interlock Switch?
(Check for it with the cover removed.)
Projection Lens
Does Focus Ring work smoothly?
Does Zoom Ring work smoothly?
Any dirt/scratches on the projection lens?
Lower Case
Any damage/deformation/cracking due to external
forces?
Any foreign object/dirt on the filter cover or the vents?
Foot
Does Front Foot work smoothly to adjust height?
Any Foot Rubber detached?
AC Inlet
Any deformation/discoloration on the connector/
terminals?
Any damage on the socket?
Main Power Switch
Any damage, deformation, or cracking?
Is Main Power Switch turned on/off?
Interfaces
Any deformation/discoloration on the connector/
terminals?
Any foreign objects on the connectors/terminals?
Air Filter
Is it fixed to INT Duct correctly?
Any dirt on the filter? (check for it with the filter
removed.)
Air Filter Cover
Any damage/deformation/cracking due to external
forces?
Is it fixed to Front Case correctly?
Any dirt/foreign materials?
Lens Shutter
Any damage, deformation, or cracking?
Is it fixed to Lower Case correctly?
Lens Shift Unit
Any damage, deformation, or cracking?
Does Lens Shift work smoothly?
Lamp
Any deformation/discoloration on the frame?
Any deformation/discoloration on the connector?
Are the screws that secure the Lamp tightened securely?
Any dirt on the glass surface?
Target part Check item
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