ViewSonic VA502mb-1 Service Manual page 30

Audio
Test Signal: Voice signal (optional, depend on model)
Test Pattern: liberty
Make sure there is audio output.
-
Make sure that audio function (volume 80%) is working without noise and resonance.
-
Make sure that the sound of right and left speakers are in balance.
-
Check for Secondary Display Modes
Test Signal:
Analog: 640*350@70Hz; 640*480@60/67/72/75/85Hz;
720*400@70Hz; 800*600@56/60/72/75/85Hz;
832*624@75Hz, 1024*768@60/70/72/75/85Hz;
1280*1024@60/75Hz
Normally when the primary mode 1280*1024@60Hz is well adjusted and compliant
-
with the specification, the secondary display modes will also be compliant with the spec.
But we still have to check with the general test pattern to make sure every secondary is
compliant with the specification.
All Modes Reset
After final QC step, we have to erase all saved changes again and restore the factory
defaults. You should do "All Mode Reset" again.
Power Off Monitor
Turn off the monitor by pressing "Power" button.
ViewSonic Corporation
27
Confidential - Do Not Copy
VA502mb-1