NIDEK

Refractometers and Keratometers

AR-600 and ARK-700 Series Service Manual Dec 2003

Service Manual

165 Pages

Table of Contents  §1 INTRODUCTION ... 1-1 §2 CAUTION ... 2-1  2.1 Check flows and items to be checked ... 2-2  §3 TROUBLESHOOTING ... 3-1  3.1 The TV monitor display nothing/the monitor display is abnormal ... 3-1 3.2 The message “Err” appears after turning ON the Power Switch ... 3-2 3.2.1 “Err 1” (Sensor carry error) appears ... 3-2 3.2.2 “Err 2” (Chart carry error) appears ... 3-3 3.2.3 “Err 3” (rotary error) appears ... 3-4 3.2.4 “Err 4” (Chart error) appears ... 3-5 3.2.5 “Err 5”(CL1 error) or “Err 6” (CL2 error) appears ... 3-5 3.2.6 “Err 7”([line] printer error) appears ... 3-6 3.2.7 “Err 8”([serial] printer error)appears... 3-6 3.2.8 “Err 9” (MEMORY FAILURE ON E2PROM) appears ... 3-7 3.2.9 “Err A” (MEMORY FAILURE ON RAM) appears ... 3-7 3.2.10 “PD ERR” appears ... 3-8 3.3 The shutter does not open (only for AR-600 whose S/N is earlier than 10121) ... 3-9 3.4 The raster does not appear (The TV monitor does not light well) ... 3-9 3.5 Eye image does not appear on the TV monitor ... 3-9 3.6 The characters or target are not clear or they do not appear on the TV monitor ... 3-10 3.7 The switching between the manual mode and auto-tracking mode can not be done ... ... 3-10 3.8 The instrument can not be placed into the mode where the objective measurement is performed. ... 3-10 3.9 The parameter settings can not be changed ... 3-11 3.10 The measuring mode can not be changed... 3-12 3.11 The movement of the measuring unit is not smooth on a plane ... 3-12 3.12 The vertical movement of the measuring unit is not smooth ... 3-12 3.13 The measuring unit is unstable ... 3-13 3.14 The alignment light does not appear (only for AR-600 series) ... 3-13 3.15 The Mire Ring does not appear (only for ARK-700 series) ... 3-13 3.16 The model eye image is not clear ... 3-14 3.17 AR measurement does not start ... 3-14 3.18 The message “Err” appears during AR measurements ... 3-15 3.19 Only the obtained SPH value is shifted ... 3-16 3.20 The obtained CYL value is too high ... 3-17 3.21 A short beep can not be heard when pressing the Start button ... 3-18
File Type: PDF
File Size: 3.21 MB
File Name: ar-600_and_ark-700_series_service_manual_dec_2003.pdf

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