What does 자기작착 (自己作錯), 자기인착 (自己認錯) mean?

 ANSWER: [If] one (自己) makes (作) a mistake (錯), one (自己) [should] admit (認) the mistake (錯).

Lately, I have been trying to teach myself to read modern Chinese, but with Korean pronunciations. Why? Because learning Chinese characters (한자) in sentences and phrases is much more fun than learning them individually. 

I do not think 작착 (作錯) and 인착 (認錯) are phrases that Koreans use because the phrases are not in my Korean dictionary, but the individual Chinese characters are still characters that Koreans use, so even though Koreans may not be able to understand the above Chinese sentence when spoken, they should be able to understand its meaning when read, if they can read Chinese characters. Personally, I think the sentence sounds great when spoken in Korean: 자기작착, 자기인착.

From Dong-A's Prime Korean-English Dictionary

From Dong-A's Prime Korean-English Dictionary

From Dong-A's Prime Korean-English Dictionary