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FAQs
Q.
Monitor shows incorrect color and non-smooth tone when connecting Mac via HDMI cable.
A.
When connecting Mac via HDMI cable, the monitor may show incorrect color and non-smooth tone.
?
In details, phenomena occurs such as:
?- High tone/low tone cannot be displayed correctly
?- Middle tones are skipped.
When these occur, we recommend using alternative ways than HDMI connection.
?
- Cause
Mac does not output full range, RGB signal but limited range, YUV signal from the HDMI port.?
This is an intended behavior of Mac.?
?
- Measures
1. Use alternative connection than HDMI.
?
? ? When Mac has following output connectors, please use these connectors.
? - Thunderbolt 3 (USB Type-C)
? - Thunderbolt 2 (Mini DisplayPort)
? - DVI
?
2. Change the monitor settings (ColorEdge monitor only)
?
? ? You can avoid this HDMI issue with the following "Signal Format" setting.
?
? ? ?For CG277 / CG247 / CG247X / CX271 / CX241 / CS270 / CS240
? ? ? Optional Settings -> Signal Selection -> Signal Format -> HDMI
? ? ? Change the setting to "PC"
?
? ? ?For CG2700X / CG2700S / CG2730 / CG2420 / CS2740 / CS2731 / CS2730 / CS2400S / CS2420 / CS2410
? ? ? Administrator Settings -> Signal Format -> HDMI
? ? ? Change the setting to "PC" or "RGB" or "4K 60Hz"
?
? ? Please refer to the user's manual for detailed procedure.
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