Huvitz CRK-1, Руководство по обслуживанию, Страница: 37 / 88

36 Auto Ref/Keratometer CRK-1 ------------------------------------------------------------------------------------------------
4.1.2. Check REF signal
If there are some problems in REF measurement, the first thing you can check is REF s
ignal quality.
1) Set any model eye on the chin rest.
2) Enter the “1-1. REF TEST MODE”
3) Change mode to “R-CCD”.
4) Check the quality of signal.
REF signal has a ring shape.
If there are apparent defects at the signal, you can suspect that the optic module has b
een damaged or contaminated.
In that case, you should report it to the FA Team of Shanghai Huvitz.