LC-28HM2E (serv.man15) - Sharp TV User Guide / Operation Manual. Page 30

[NORMAL]
Normal horizontal picture orientation

[MIRROR]
Mirror image 

➞ To display mirror picture for special uses.

[FULL]
This mode displays the full screen of the video signal received. (The picture is
displayed slightly stretched vertically.)

[STRETCH]
This mode displays pictures based on the width of the screen. Bands are present
at the top and bottom. (Aspect ratio is 16:9)

[INPUT]
AV INPUT 3 put in input mode

[OUTPUT]
AV INPUT 3 changes to AV output mode. 

➞ Video/Audio signals entering AV

INPUT 1 is output from AV INPUT 3 terminals to allow recording.
“FIXED”: The sound level is fixed. 

➞ Adjust it from the connected AV device (e.g.

an amplifier)
“VARIABLE”:  The sound level is not fixed. (The maximum level is as much as in
the FIXED setting)
* No sound from side speakers

[AUTO]/[N358]/[N443]/[PAL]/[PAL-60]/[PAL-M]/[SECAM]
* The settings are stored per connection terminal (AV-1/2/3, COMPONET-1/2).

Even if the power to the unit is cut off, the settings will remain in the memory.

Returning to the factory setting

Using this function, a stable computer screen without flicker in the display can be
obtained.
Press ENTER for adjustment.
* Depending on the signal, the AUTO SYNC function may not provide enough

adjustment. In this case, perform fine adjustment manually.
Even if the output setting is the same at the computer side (e.g. XGA), slight
discrepancies may occur in the adjustment of the hardware.

This measures and sets the frequency when the display is used as a computer monitor.