Philips 240S4LPMS/00 Service Manual page 48

Meridian 3
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5. Check the FW version after upgrade.
5.1. The way to open factory menu.
(1)Connect video source to monitor and AC on.
(2)The way to factory menu: Press "MENU" and "+" keys synchronously (The rightmost and leftmost keys in the
touch keyboard), and DC on. When the screen lights, release the two keys and press "MENU" again to open
factory menu.
"+" key
(3)Select "factory" and press menu key to open factory menu as below.
(4)Please do "Auto Color" in factory menu after change main board and upgrade F/W.
Check this F/W version.
"menu" key "DC" key