Test Condition; Inspection Procedure - Optoma EP1690 Service Manual

4-3 Test Condition

- Circumstance Brightness : Dark room less than 0.5 lux.
- Inspection Distance : .5 M~3 M for functional inspection
- Screen Size : 60 inches diagonal (wide)
- After repairing each EP690 / OP280 / OP40, the unit should be burn-in (Refer to the
table below).
Symptom
Normal Repair
NFF
Auto Shutdown

4-4 Inspection Procedure

No Step
Frequency
and Track-
ing

Boundary
2
Burn-in Time
2 Hours
4 Hours
6 Hours
Specification
Eliminate visual
wavy noise by
Rsync, Frequen-
cy or Tracking
selection.
Horz. And Vert.
position of
video should be
adjustable to
be the screen
frame.
Procedure
- Test Signal:
024x768@60Hz
- Test Pattern: General-
- check and see if image
sharpness and focus
are well-performed.
- If not, re-adjust by the
following steps:
() Select "Frequency"
function to adjust
the total pixel number
of pixel clock in one
line period.
(2) Then, select
"Tracking" function
and use right or left
arrow key to adjust
the vague to
minimize video flicker.
- Test Signal:
024x768@60Hz
- Test Pattern: General
- Adjust Resync or
Frequency / Tracking /
H. Position / V. Position
to the inner of the screen.
4-2
Photo
EP690 / OP280 / OP40