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