BenQ VM2221 Product Service Manual page 98

Receive
numeral signal
7. DT TV checkment
8. AUDIO
PC or Pattern
adjustment
Generator
Sound source
8.1 Sound mode
8.2 Bass
8.3 Treble
8.4 Balance
9. CI function test CI card
DVB
Any Patten
17
picture is clear and fluent
Sound without noise
1. Press MENU Key to open OSD.
2. Press VOL▲▼Key to choose Audio.
3. After finished, choose MENU to exit.
1. Press CH▲▼Key to choose Sound
mode.
2. Press VOL▲▼Key set upon clients
requirements. Default is User.
1. Press VOL▲▼Key set low pitch
dimension.
2. When leaving the factory, it is
settled"50"
1. Press VOL▲▼Key to set high pitch
dimension.
2. When leaving the factory, it is
settled"50"
1. Press VOL▲▼ Key to set balance
2. When leaving the factory, it is settled
in middle
1. Plug in CI card
2. Check if picture and image is normal