Service manual

ViewSonic Corporation Confidential - Do Not Copy VA503b-2_VA503m-2
Sharpness + / -
English
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Language Select
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Resolution Notice On/Off
H Position (+ / -)
OSD Position
V Position (+ / -)
OSD Time Out
Setup Menu
OSD Background On/Off
Memory Recall
3.2 OSD lock Menu function
OSD Lock Menu Function Check
Item Method Phenomenon
Activate OSD lock [1] + [▲] 10S
Press any of buttons"1", "▼",
"▲", "2" will appear "OSD Locked"
3s
Deactivate OSD lock: [1] + [▲] 10S(again)
NOTICE:
When the OSD is locked will lock all functions.
Status bar indicating OSD Lock or Unlock is in progress and when complete it will indicate “OSD
Locked”
OSD Lock should not lock Power Button and Power Lock function
3.3 Power lock Menu function
Power Lock Menu Function Check
Item Method Phenomenon
Activate Power Lock [1] + [▼] 10S
Can not turn off the LCD;
Press the power button will
appear "Power Button Locked"
OSD 3s;
LCD would automatically turn
back "On" when power is restored
after a power failure
Deactivate Power Lock [1] + [▼] 10S(again)
NOTICE:
Status bar indicating Power Button lock or unlock is in progress and when complete it will indicate
“Power Button Locked”
Power should only be lockable in the “On State”
3.4 Resolution notice function
Resolution Notice Menu
Item Method Phenomenon
Activate Resolution
Notice Menu
Resolution Notice OSD should show
on screen after changing to
non-native mode for 30 sec,
And it should disappear after 10s
or by pushing button [1] or [2]
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