“Active” To “Semi Stand-By” Flowchart - Philips Q552.1A Service Manual

EN 28 5. Q552.1A LA
Instruct 200Hz
Tcon to turn off
the display
2010-Jun-25
Service Modes, Error Codes, and Fault Finding
Active
Mute all sound outputs via softmute
Set main amplifier mute (I/O: audio-mute)
Force ext audio outputs to ground
(I/O: audio reset)
switch off Ambilight
Wait until Ambilight has faded out: Output power
Observer should be zero
Switch off POK line
detection algorithm
switch off LCD backlight
Mute all video outputs
Yes
Wait x ms (display file)
Switch off LVDS output in 85500
Switch off the display power by
switching LCD-PWR-ON high
Semi Standby
Figure 5-8 "Active" to "Semi Stand-by" flowchart
Wait 100ms
And wait 5ms
(I/O or I²C)
200Hz set?
No
Wait x ms
back to
div. table
The exact timings to
switch off the
display (LVDS
delay, lamp delay)
are defined in the
display file.
18770_255_100216.eps
100216