Optoma EX542 Service Manual page 48

4. HDMI Test (not for EX612)
Procedure
Inspection item
Inspection Distance
Criteria
5. Audio Test
Procedure
Inspection item
Inspection Distance
Criteria
EX540/EX542/EX612/EX615/EX762/EX540I/EX542I/ES523ST/EW533ST
- Test equipment: DVD Player with HDMI output.
- Test signal: 720p, 1080p, 1080i
- HDMI performance test.
- 1.8 M ~2.5 M.
- Ensure the image is well performed and the
color can not discolor.
- Check whether "mute" is normal.
- Test equipment: DVD Player
- Test signal: CVBS
- Audio performance test
- 1.8 M ~2.5 M
- Check the sound from speakers
- Plug Audio cable into Audio in 1 port, check
whether "Volume" is normal.
- Plug Audio cable into Audio Out port, check
whether the outboard speaker's "Volume" is
normal.
- Adjust the volume to "5→ 10" by using the
remote controller.
- Check the sound from speakers.
- Check whether the "mute" is normal.
Note: EX542/EX615/EX540/EX762/EX540I/
EX542I have 3 Audio.
In ports for different input signals. To test each
Audio In port, make sure input its correspondent
signal.
Confidential
4-10