Nidek Medical AR-310A User manual

AUTO REFRACTOMETER, AUTO REF/KERATOMETER
AR-310A/AR-330A/AR-360A
ARK-510A/ARK-530A/ARK-560A
SERVICE MANUAL
September 2014
Pages in total: 218
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Table of Contents
1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2. SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3 . 1 Classifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 . 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4. TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5. SUBTROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .19
5 . 1 Initial Screen is not Displayed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 . 1 . 1 Power supply voltage check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5 . 1 . 2 Backlight of color LCD does not light up . . . . . . . . . . . . . . . . . . . . . . 21
5 . 2 Error Message Appears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 . 2 . 1 ERR001 (EEPROM error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 . 2 . 2 ERR002 (Clock error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 . 2 . 3 PD ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 . 2 . 3 . 1 PD LED (30601-EA55) does not light up. . . . . . . . . . . . . . . 23
5 . 2 . 4 ERR011 (Time-out error in characters [OUT]) . . . . . . . . . . . . . . . . . . 24
5 . 2 . 5 ERR012 (Time-out error for receiving data [OUT]) . . . . . . . . . . . . . . 25
5 . 2 . 6 ERR013 (Receiving error [OUT]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 7 ERR014 (Receiving code error [OUT]). . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 8 ERR015 (Reply time-out [OUT]). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 9 ERR016 (DTR-DSR error [OUT]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 10 ERR017 (Data error [OUT]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 11 ERR018 (Command error [OUT]). . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 12 NO DAT (Data empty [OUT]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 13 ERR021 (Time-out error in characters [IN]) . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 14 ERR022 (Time-out error for receiving data [IN]) . . . . . . . . . . . . . . . . 25
5 . 2 . 15 ERR023 (Receiving error [IN]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 16 ERR024 (Receiving code error [IN]). . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 17 ERR025 (Reply time-out [IN]). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 18 ERR026 (DTR-DSR error [IN]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 19 ERR027 (Data error [IN]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 20 ERR028 (Command error [IN]). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 21 ERR031 (Up-and-down tracking error). . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 22 ERR032 (Left-to-right tracking error) . . . . . . . . . . . . . . . . . . . . . . . . . 27
5 . 2 . 23 ERR033 (Back-and-forth tracking error) . . . . . . . . . . . . . . . . . . . . . . 28
5 . 2 . 24 ERR034 (Up/down chinrest error) . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5 . 2 . 25 NO PAPER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

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5 . 2 . 26 ERR043 (Printer connection error). . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5 . 2 . 27 ERR101 (Sensor initialization error) . . . . . . . . . . . . . . . . . . . . . . . . . 30
5 . 2 . 28 ERR111 (Thermistor error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5 . 2 . 29 ERR112 (AR motor error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5 . 2 . 30 ERR121 (CYL 1 initialization error) . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5 . 2 . 31 ERR122 (CYL 2 initialization error) . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5 . 2 . 32 ERR123 (Chart initialization error) . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5 . 2 . 33 ERR501 (Power error of Eye Care card) . . . . . . . . . . . . . . . . . . . . . . 32
5 . 2 . 34 ERR502 (Writing error of Eye Care card) . . . . . . . . . . . . . . . . . . . . . 32
5 . 2 . 35 ERR503 (Power error of Eye Care card) . . . . . . . . . . . . . . . . . . . . . . 33
5 . 2 . 36 ERR601 (USB_A recognition error) . . . . . . . . . . . . . . . . . . . . . . . . . 33
5 . 2 . 37 ERR602 (USB_A class error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5 . 2 . 38 ERR700 (File sharing error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5 . 2 . 39 ERR703 (Hardware error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5 . 2 . 40 ERR704 (DHCP error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5 . 2 . 41 ERR750 (Network access error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5 . 2 . 42 ERR751 (Network writing error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5 . 2 . 43 ERR754 (PC name error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5 . 2 . 44 ERR755 (Read-only folder error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5 . 2 . 45 ERR756 (Log-on error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 46 ERR757 (Shared folder error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 47 ERR758 (Time-out error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 48 ERR759 (Deletion error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 49 ERR760 (Error during network initialization) . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 50 ERR761 (Access right error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 2 . 51 ERR762 (Account error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 2 . 52 ERR771 (Cable connection error) . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 2 . 53 ERR772 (Reply error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 3 Function Buttons are not Operational . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5 . 4 Measuring Unit does not Move Smoothly along Base Unit . . . . . . . . . . . . . . . . 41
5 . 5 Rotating Joystick does not Move Measuring Unit Up or Down . . . . . . . . . . . . . . 42
5 . 6 Chinrest does not Move Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5 . 7 Measurement cannot be Performed Properly . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5 . 7 . 1 Observed image is not displayed on LCD . . . . . . . . . . . . . . . . . . . . . 48
5 . 7 . 2 Mire ring is not displayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5 . 7 . 3 Focus LED is not displayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5 . 7 . 4 Chart is not visible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5. 7. 5
Alignment is not automatically performed by 3D auto tracking function . . 51
5 . 7 . 5 . 1 Alignment is not performed in side-to-side direction . . . . . . 51
5 . 7 . 5 . 2 Alignment is not performed in up-and-down direction . . . . . 52
5. 7. 5. 3
Alignment is not performed in forward-and-backward direction . . 53
5 . 7 . 6 Measurement does not start even when start button is pressed . . . . 54
5. 7. 7
Measurement does not start even when alignment and focus are achieved . . 55
5 . 7 . 8 AR measurement data is not normal . . . . . . . . . . . . . . . . . . . . . . . . . 56
5 . 7 . 8 . 1 BLK (blinking error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5 . 7 . 9 PD measurement data is not normal . . . . . . . . . . . . . . . . . . . . . . . . . 57
5 . 7 . 10 KM measurement data is not normal . . . . . . . . . . . . . . . . . . . . . . . . . 58

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5 . 7 . 11 KM periphery cannot be measured . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5 . 7 . 12 CS measurement data is not normal . . . . . . . . . . . . . . . . . . . . . . . . . 59
5 . 7 . 13 PS measurement data is not normal . . . . . . . . . . . . . . . . . . . . . . . . . 59
5 . 8 Communication cannot be Performed Properly . . . . . . . . . . . . . . . . . . . . . . . . . 60
5 . 9 Printing cannot be Performed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
5 . 10 LCD Auto Sleep Function does not Operate. . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6. REMOVAL PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . .63
6 . 1 Measuring Unit Left Cover (30601-M707). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
6 . 2 Measuring Unit Right Cover (30601-M708) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
6 . 3 Measuring Unit Front Cover ASSY(30601-6300) . . . . . . . . . . . . . . . . . . . . . . . . 64
6 . 4 Front Body Cover (30601-M702) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6 . 5 Measuring Unit Rear Cover ASSY (30601-6000) . . . . . . . . . . . . . . . . . . . . . . . . 65
6 . 6 Rear Body Cover ASSY (30601-7000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6 . 7 Bottom Plate (30601-M002) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6 . 8 Dust Cover (30601-M304). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6 . 9 LCD Rear Cover (30601-M716) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6 . 10 LCD Front Cover (30601-M715) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
7. REPLACEMENT PROCEDURE . . . . . . . . . . . . . . . . . . . . . .69
7 . 1 ASSYs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7 . 1 . 1 Joystick ASSY (30601-2600) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7 . 1 . 2 Measuring ASSY (30601-9E00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7 . 1 . 3 Phototransmitter ASSY (30601-3310) . . . . . . . . . . . . . . . . . . . . . . . . 70
7 . 1 . 4 Mire ASSY (30601-4000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7 . 1 . 5 LCD ASSY(30601-6100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7 . 1 . 6 Subjective cylinder ASSY (30703-3700) . . . . . . . . . . . . . . . . . . . . . . 72
7 . 1 . 7 Chart disk ASSY (30703-3800) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
7 . 2 Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7 . 2 . 1 Main board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7 . 2 . 2 Tracking board (30601-BA02) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7 . 2 . 3 Driver board (30601-BA03) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7 . 2 . 4 Base board (30601-BA05) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
7 . 2 . 5 LCD board (30601-BA06). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7 . 2 . 6 Left panel SW board (30601-BA07) . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7 . 2 . 7 U/D SW board (30601-BA09). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
7 . 2 . 8 Sensor carry board (30601-BA14) . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
7 . 2 . 9 Right panel SW board (30601-BA15). . . . . . . . . . . . . . . . . . . . . . . . . 79
7 . 2 . 10 PD boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7 . 2 . 10. 1 BA08 PD CCD board (32105-BA08) . . . . . . . . . . . . . . . . . . 80
7 . 2 . 10. 2 PD CCD board (15601-BA08) . . . . . . . . . . . . . . . . . . . . . . . 80
7 . 2 . 11 DC-AC inverter (18535-E010) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
7 . 2 . 12 Printer interface board (80606-00019) . . . . . . . . . . . . . . . . . . . . . . . . 81
7 . 3 Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7 . 3 . 1 R/L sensor (30602-EA20). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7 . 3 . 2 F/B sensor (30602-EA21). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7 . 3 . 3 U/D sensor (30601-EA22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

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7 . 3 . 4 R/L motor (30602-EA26) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7 . 3 . 5 F/B motor (30602-EA27) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7 . 3 . 6 U/D motor (30601-EA28) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7 . 3 . 7 Origin sensor (30601-EA36). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7 . 3 . 8 CL motor (30703-EA37) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7 . 3 . 9 CL sensor (30703-EA38) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
7 . 3 . 10 Focus LED(30601-EA42) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7 . 3 . 11 KM6 LED (30601-EA44). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7 . 3 . 12 Chinrest (30601-EA53). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7 . 3 . 13 PD LED (30601-EA55) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
7 . 3 . 14 Chart LED (30601-EA76) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
7 . 3 . 15 Chart (30703-EA74) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
7 . 3 . 16 B/W CCD camera (30601-E001) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
7 . 3 . 16. 1 Measurement CCD camera. . . . . . . . . . . . . . . . . . . . . . . . . 93
7 . 3 . 16. 2 Observation CCD camera . . . . . . . . . . . . . . . . . . . . . . . . . . 93
7 . 3 . 17 Color LCD (30601-E005) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
7 . 3 . 18 Brushless motor (30601-E011) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
7 . 3 . 19 Sensor motor (30601-E035). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
7 . 3 . 20 Switching power supply (80602-00102) . . . . . . . . . . . . . . . . . . . . . . . 96
7 . 3 . 21 Printer (80606-00018) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7 . 4 Mechanical Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
7 . 4 . 1 R/L shaft (30601-M201) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
7 . 4 . 2 F/B shaft (30601-M103) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
7 . 4 . 3 Sliding plate (32105-M102) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
7 . 4 . 4 Wire (30601-M307) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
7 . 4 . 5 Linear bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
7 . 4 . 5 . 1 Linear bearing for F/B shafts (82001-LM028) . . . . . . . . . . 101
7 . 4 . 5 . 2 Linear bearing for R/L shaft (82001-LM097) . . . . . . . . . . . 101
8. ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
8 . 1 Entering Adjustment Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
8 . 1 . 1 MENU mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
8 . 1 . 2 CALIB MODE SELECT (for AR). . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
8 . 1 . 3 ALIGNMENT CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
8 . 1 . 4 Measurement mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
8 . 1 . 5 Parameter settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
8 . 1 . 6 CALIB MODE SELECT (for KM) . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
8 . 1 . 7 EEPROM ERROR DISP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
8 . 2 Jig Attachment Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
8 . 2 . 1 Service optical adjustment jig (30670-5300) . . . . . . . . . . . . . . . . . . 107
8 . 2 . 1 . 1 Joint jig (30670-1100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
8 . 2 . 1 . 2 Reticle illumination jig (30670-1200) . . . . . . . . . . . . . . . . . 109
8 . 2 . 2 0-D model eye 2 (32177-0618) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
8 . 2 . 3 Dioptric tester (99104-G020) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
8 . 2 . 4 Simple calibration model eye (32107-6200). . . . . . . . . . . . . . . . . . . 111
8 . 2 . 5 Chinrest attachment jig (32107-1100) . . . . . . . . . . . . . . . . . . . . . . . 111
8 . 2 . 6 22-model eye jig (32171-0600) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

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8 . 2 . 7 Cylinder axis adjustment jig (32177-1500) . . . . . . . . . . . . . . . . . . . . 112
8 . 2 . 8 Chart test jig (32145-2100). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
8 . 2 . 9 Chart test jig (30670-2300). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
8 . 2 . 10 Dioptric tester jig (30670-6000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
8 . 2 . 11 KM calibration jig (30670-0300) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
8 . 2 . 12 Aspheric model eye (32177-1400) . . . . . . . . . . . . . . . . . . . . . . . . . . 116
8 . 2 . 13 PD check jig (32545-1002). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
8 . 3 CCD Camera Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
8 . 3 . 1 Observation CCD camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
8 . 3 . 2 Measurement CCD camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
8 . 4 Phototransmitter Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
8 . 4 . 1 Internal reflection removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
8 . 4 . 2 AR SLD optical axis adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
8 . 5 Chart Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
8 . 5 . 1 AR-310A, AR-330A, ARK-510A, ARK-530A . . . . . . . . . . . . . . . . . . 124
8 . 5 . 2 AR-360A, ARK-560A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
8 . 5 . 2 . 1 Subjective cylinder ASSY adjustment . . . . . . . . . . . . . . . . 125
8 . 5 . 2 . 2 Chart position adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 127
8 . 6 ALIGNMENT CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
8 . 7 AR CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
8 . 7 . 1 AR CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
8 . 7 . 2 AR AXIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
8 . 7 . 3 AXIS OFFSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
8 . 7 . 4 SPH OFFSET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
8 . 7 . 5 CHART CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
8 . 7 . 5 . 1 AR-310A/AR-330A/ARK-510A/ARK-530A . . . . . . . . . . . . 135
8 . 7 . 5 . 1 . 1 Chart test jig . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
8 . 7 . 5 . 1 . 2 Diopter tester jig ASSY . . . . . . . . . . . . . . . . . . . 138
8 . 7 . 5 . 2 AR-360A/ARK-560A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
8 . 7 . 5 . 2 . 1 Chart test jig . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
8 . 7 . 5 . 2 . 2 Dioptric tester jig ASSY . . . . . . . . . . . . . . . . . . 148
8 . 8 KM CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
8 . 8 . 1 KM CALIB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
8 . 8 . 2 KM CALIB CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
8 . 8 . 2 . 1 ADJUST GAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
8 . 8 . 2 . 2 ADJUST PHI6 GAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
8 . 8 . 3 KM AXIS CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
8 . 9 PD CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
8 . 9 . 1 CENTER POSITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
8 . 9 . 2 PD CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
8 . 10 CS/PS Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
8 . 11 AUTO TRC ADJUST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
8 . 12 Software Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

XAR17ARDA001G/E
8
8 . 13 Time and Date Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
8 . 14 CURSOR BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
8 . 15 Rewriting EEPROM Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
8 . 16 Setting Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
9. SUPPLEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
9 . 1 Appearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
9 . 1 . 1 Front view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
9 . 1 . 2 Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
9 . 2 Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
9 . 3 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
9 . 3 . 1 Complete wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
9 . 3 . 1 . 1 30602-E000 (AR-330A and ARK-530A) . . . . . . . . . . . . . . 185
9 . 3 . 1 . 2 30601-E000 (AR-310A and ARK-510A) . . . . . . . . . . . . . . 186
9 . 3 . 1 . 3 30603-E000 (AR-360A) and 30703-E000 (ARK-560A) . . . 187
9 . 3 . 2 Partial writing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
9 . 4 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
9 . 5 Parameter List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
9 . 5 . 1 AR-310A/AR-330A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
9 . 5 . 2 AR-360A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
9 . 5 . 3 ARK-510A/ARK-530A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
9 . 5 . 4 ARK-560A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
9 . 6 Jig List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
9 . 7 Adjustment Item List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
9 . 7 . 1 ASSYs, boards, and adjustment items. . . . . . . . . . . . . . . . . . . . . . . 213
9 . 7 . 2 Electrical components and adjustment items. . . . . . . . . . . . . . . . . . 214
9 . 7 . 3 Mechanical components and adjustment items . . . . . . . . . . . . . . . . 215
9 . 8 Screw List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

XAR17ARDA001G/E
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1 INTRODUCTION
This Service Manual is for the NIDEK AUTO REFRACTOMETER and AUTO REF/KERATOME-
TER models: AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A.
For correct service, thorough understanding of the contents in this manual is required prior to the
service.
Refer to the Operator’s Manual and Parts List for the AR-310A, AR-330A, AR-360A, ARK-510A,
ARK-530A, and ARK-560A.
In case the device cannot be repaired according to the procedures described in this manual,
please report the serial number of the device and details of the symptom or symptoms.
Refer to the Service Manual Annex for important changes.

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This page is intentionally left blank.

XAR17ARDA001G/E
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2 SAFETY PRECAUTIONS
1 . Requirements for prior contact regarding repair
1 ) When conducting repairs described in the Service Manual or Service Manual Annex,
prior contact with NIDEK is not necessary.
2 ) When conducting repairs not covered in the Service Manual or Service Manual
Annex, prior contact with the NIDEK Service Department in writing is required.
3 ) When for some reason, repairs were conducted because they needed to be done
immediately, or other such circumstance, contact NIDEK as soon as possible in writ-
ing after conducting repairs to the device.
2 . General precautions
1 ) Repairs by the Service Manual or Service Manual Annex must be performed by per-
sonnel who have undergone training at NIDEK.
2 ) Conduct repairs according to the procedures described in the Service Manual or Ser-
vice Manual Annex.
3 ) Never wipe the covers using an organic solvent such as paint thinner.
Doing so may ruin the surface and impair the appearance of the device.
4 ) When conducting repairs, turn off the power switch and disconnect the power cord
from the wall outlet unless the power needs to be on.
5 ) A part emitting invisible laser beam (Class 3B laser) is used inside the device. (How-
ever, the device is classified as a Class 1 laser product indicating that the part does
not emit hazardous irradiation to the eye.)
3 . Cautions regarding power source and power cord
1 ) Disconnect the power cord by holding its plug. Do not place heavy objects on the cord
or coil the cord tightly.
A damaged power cord may cause fire or electric shock.
2 ) Occasionally clean the prongs of the power plug with a dry cloth.
If dust accumulates between the prongs, the dust could collect moisture, and short
circuit or fire may occur.
3 ) Fully insert the main power plug into an outlet. A fire may occur if the device is used
with improper connection.
4 ) Do not overload the electrical outlet. A fire may occur.
5 ) Be sure to use an outlet equipped with a ground terminal.
Electric shock may result in the event of device malfunction or power leakage.
6 ) Be sure to use a wall outlet that meets the power requirements.
If the line voltage is too high or too low, the device may not perform properly. Electric
shock, malfunction, or fire may result.
4 . Maintenance cautions
1 ) Never look directly at the beam from the phototransmitter ASSY (invisible laser: Class
3B laser) or block it with any part of the body.
2 ) Take antistatic precautions prior to repair.
3 ) Take proper care against electric shock during repair.
4 ) Tighten or loosen screws with proper tools.
5 ) Never drop parts or screws inside the device.
6 ) Prepare storage cases so as not to lose the removed screws or parts.

XAR17ARDA001G/E
12 Return to previous page
7 ) After loosening the screws fastened by a threadlocking adhesive, be sure to reapply
the threadlocking adhesive to the screws before retightening them.
8 ) After replacing parts, confirm that they are fastened in their original positions securely
before turning on the power.
9 ) See Wiring Diagram and Connecting Cable to check cable breaks as described in
TROUBLESHOOTING. In addition, check cables for the following:
a . Connectors and contact pins are connected securely.
b . Contact pins are crimped securely.
c . No contact failure occurs after re-connection of connectors.
d . Cables are soldered properly.
* Do not pull on the cables with excessive force. Doing so may result in cable
breakage. Never conduct repairs with wet hands. Electric shock or failure of the
device may result.
10) The labeled area indicates high voltage. Take proper precautions against electric
shock.
11 ) When a cable with any of the following marks is disconnected and reconnected, be
sure to confirm that the screws are tightened securely.
a . Protective ground:
b . Functional ground:
c . Equipotential:
12) Install the device where the outlet which the power plug is inserted into is easily
accessible during use. In addition, ensure that the power plug can be disconnected
without the use of a tool.
Otherwise, it may interfere with disconnection of the device from the input power
source in case of abnormality
5 . Adjustment precautions
1 ) Confirm that the following conditions are met before installation.
a . A place which is level and stable without vibration and shock
b . No exposure to direct sunlight or ultraviolet rays
c . A place with minimal external light sources
d . No exposure to water
e . A place where temperature and humidity meet the specifications for use
f . Dust-free and smoke-free
2 ) Never use the adjustment jigs for purposes other than those intended.
6 . Caution after repairs
3 ) Confirm that the device operates properly after repairs

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3 SPECIFICATIONS
3.1 Classifications
1 . Type of protection against electrical shock: Class I
The AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A are classi-
fied as Class I devices.
A Class I device is one in which, in addition to basic insulation, protection against
electric shock is provided by connecting the device to a grounding source to prevent
accessible metal parts from becoming electrically charged, should the basic insulation
fail.
2 . Degree of protection against electrical shock: Type B applied part
The AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A are classi-
fied as devices with a Type B applied part.
A Type B Applied Part provides a particular degree of protection against electric
shock, particularly regarding the following:
- allowable leakage currents
- reliability of the protective ground connection (if applicable)
3 . Conformity to electromagnetic compatibility standard
The AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A conform
to the EMC standard of IEC60601-1-2: 2007.
4 . Degree of protection against harmful ingress of water: IPX0
The AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A provide
no protection against ingress of water with harmful effects.
Avoid splashing water or other liquids on or near these devices.
5 . Degree of safety for application in the presence of a flammable anesthetic mixture with air,
or with oxygen or nitrous oxide.
The AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A are not
suitable for use in the presence of a flammable anesthetic mixture with air, or with
oxygen or nitrous oxide.
Do not operate the device near flammable type materials.
6 . Method(s) of sterilization or disinfection recommended by the manufacturer
The forehead rest and chinrest can be cleaned with a cloth dampened with rubbing
alcohol as necessary.
7 . Mode of operation
The AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A are classi-
fied as continuous operating devices.
8 . Installation and use
The AR-310A, AR-330A, AR-360A, ARK-510A, ARK-530A, and ARK-560A are classi-
fied as stationary devices.

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3.2 Specifications
1 . Objective measurement of refractive error (AR measurement)
Spherical power (S) -30.00 to +25.00 D (VD = 12 mm)
0.01/0.12/0.25 D increments
Cylindrical power (C) -12.00 to +12.00 D
0.01/0.12/0.25 D
Cylinder axis (A) 0 to 180°
1°/5° increments
Vertex distance 0/10.5/12/13.75/15/16.5 mm
Minimum pupil diameter
measurable
ø2 mm
Relaxation of
accommodating eye
Auto fogging system
Chart Scenery chart
2 . PD measurement
Measurement range 30 to 85 mm
(Near PD = 28 to 80 mm, Near working distance = 40
cm)
1 mm increments
3 . Measurement of corneal curvature (KM measurement) (ARK-510A, ARK-530A, and ARK-
560A)
Corneal curvature radius
(R1, R2, AVE)
5.00 to 13.00 mm
0.01 mm increments
Corneal refractive power
(R1, R2, AVE)
25.96 to 67.50 D (n = 1.3375)
0.01/0.12/0.25 D increments
n = 1.3375/1.336/1.332
Corneal cylindrical power
(CYL)
-12.00 to +12.00 D
0.01/0.12/0.25 D increments
Cylinder axis (A) 0 to 180°
1°/5°increments
KM measurable area ø3.3 mm (for mire ring/corneal curvature radius of 7.7
mm)
ø6.0 mm (for four points/corneal curvature radius of
7.7 mm)
Size of mire ring ø2 mm and ø3.3 mm on the cornea (for corneal curva-
ture of 7.7 mm)
Chart Scenery chart
4 . Sagittal radius measurement
Measurable angle Within 25° from center (SUP., INF, TEMP, and NAS.)
Sagittal curvature 5.00 to 13.00 mm
0.01 mm increments
Eccentricity (E) -4.10 to 2.05
5 . CS measurement (ARK-510A, ARK-530A, and ARK-560A)
Measurement range 10.0 to 14.0 mm
0.1 mm increments
6 . PS measurement (ARK-510A, ARK-530A, and ARK-560A)
Measurement range 1.0 to 10.0 mm
0.1 mm increments

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7 . Subjective measurement of refractive error (AR-360A and ARK-560A)
Spherical power (S) -20.00 to +20.00 D (VD = 12 mm)
0.25 D increments
Cylindrical power (C) -8.00 to +8.00 D (AR measurement is used. The max-
imum value may be restricted depending on the SPH
value.)
0.25 D increments
Cylinder axis (A) 0 to 180°(AR measurement value is used.)
1°/5°increments
ADD power 0 to +9.75 D
0.25 D increments
Chart Alphanumeric charts
VA 20/200, 20/80, 20/60, 20/50, 20/40, 20/30, 20/25, 20/20,
or 20/200 to 20/20 (entire)
VA 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0, or 0.1 to 1.0
(entire)
Distant vision 20/200 or lower, 20/200, 20/80, 20/60, 20/50, 20/40, 20/30,
20/25, 20/20
0.1 or lower, 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0
Near vision 20/200 or lower, 20/200, 20/80, 20/60, 20/50, 20/40, 20/30,
20/25, 20/20
0.1 or lower, 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0
8 . Uncorrected visual acuity measurement (AR-360A, ARK-560A)
Measurement range 20/200 or lower, 20/200, 20/80, 20/60, 20/50, 20/40, 20/30,
20/25, 20/20
0.1 or lower, 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0
Chart VA 20/200, 20/80, 20/60, 20/50, 20/40, 20/30, 20/25, 20/20,
or 20/200 to 20/20 (entire)
VA 0.1, 0.25, 0.32, 0.4, 0.5, 0.63, 0.8, 1.0, or 0.1 to 1.0
(entire)
9 . Working range of auto tracking
Up and down ±16 mm or more
Right and left ±5 mm (except AR-310A and ARK-510A)
back and forth ±5 mm (except AR-310A and ARK-510A)
10. Movable range of horizontal
direction
Back and forth 36 mm or more
Right and left 85 mm or more
11 . Other functions
Auto shot The measurement automatically starts when the eye
is properly aligned.
Alignment/observation
method
5.7-inch color LCD panel
Printer Thermal line printer with auto cutter
Width 58 mm
Interface connectors RS-232C: Two ports (IN/OUT: two-phase connectable
system)
USB: One port
LAN: One port

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12. Dimensions and mass
Dimensions 260 mm (W) × 481 mm (D) × 455 mm (H)
Mass 20 kg
Power source AC 100 to 240 V ±10% 50/60 Hz
Power consumption 100 VA
13. Environmental conditions (during use)
Temperature 10 to 35ºC (50 to 95°F)
Humidity 30 to 90ºC (No condensation)
Athmospheric pressure 800 to 1060 hPa
14. Environmental conditions (during transport and storage in packed condition)
Temperature -10 to 55ºC (14 to 131°F)
Humidity 10 to 95ºC (No condensation)
Athmospheric pressure 700 to 1060 hPa
15. Others
Service life 8 years from the date of initial operation (certified)
Regular check, maintenance, and consumable parts
replacements are necessary.
Unit per package 1 unit

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4 TROUBLESHOOTING
Connect the power cord, and turn on the power
switch.
Yes
Is the initial screen displayed?
No
5.1 Initial Screen is not Displayed (p19)
Yes
Does an error message appear?
Yes
5.2 Error Message Appears (p22)
No
Can the function buttons be operated?
No
5.3 Function Buttons are not Operational (p40)
Yes
Does the main unit move horizontally?
No
5.4 Measuring Unit does not Move Smoothly along
Base Unit (p41)
Yes
Does rotating the joystick move the measuring unit
up and down?
No
5.5 Rotating Joystick does not Move Measuring
Unit Up or Down (p42)
Yes
Does the chinrest move up and down smoothly?
No
5.6 Chinrest does not Move Up or Down (p44)
Yes
Can measurement be performed properly?
No
5.7 Measurement cannot be Performed Properly
(p46)
Yes

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Can communication be performed properly?
No
5.8 Communication cannot be Performed Properly
(p60)
Yes
Can printing be performed?
No
5.9 Printing cannot be Performed (p60)
Yes
Does the LCD auto sleep function operate?
No
5.10 LCD Auto Sleep Function does not Operate
(p61)
Yes
Turn off the power switch.

XAR17ARDA001G/E
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5 SUBTROUBLESHOOTING
5.1 Initial Screen is not Displayed
Is the power supply voltage proper?
No
5.1.1 Power supply voltage check (p20)
Yes
Are the voltages between the following TPs on the
tracking board (30601-BA02) as shown below (see
9.3 [p185])?
TP6 and TP1: DC +3.3 V
TP5 and TP1: DC +5 V
TP4 and TP1: DC +12 V
TP3 and TP1: DC +15 V
No
Replace the Tracking board (30601-BA02) (see
7.2.2 [p74]).
Yes
Are there any breaks in the BA01-BA03 cable
(30601-EA13) (see 9.3 [p185])?
Yes
Replace the BA01-BA03 cable (30601-EA13).
No
Are there any breaks in the flexible flat cable
(30601-E022) (see 9.3 [p185])?
Yes
Replace the flexible flat cable (30601-E022).
No
Does the backlight of the color LCD (30601-E005)
light up?
No
5.1.2 Backlight of color LCD does not light up
(p21)
Yes
Are there any breaks in the flexible flat cable
(30601-E021) (see 9.3 [p185])?
Yes
Replace the flexible flat cable (30601-E021).
No
Replace the LCD board (30601-BA06) (see 7.2.5
[p77]).
Is the problem resolved?
No
Replace the Color LCD (30601-E005) (see 7.3.17
[p94]).
Yes
End

XAR17ARDA001G/E
20 Return to previous page
5.1.1 Power supply voltage check
Is the power supply voltage proper?
No
Set a voltage regulator.
Yes
Is the voltage between the P001 1st and 3rd pins
on the primary power supply unit (30601-EA01) the
same as the input voltage (see 9.3 [p185])?
No
Replace the primary power supply unit (30601-
EA01).
Yes
Are the voltages between the J51 4th and 1st, 5th
and 2nd, and 6th and 3rd pins on the switching
power supply (80602-00102) DC +15 V (see 9.3
[p185])?
No
Replace the Switching power supply (80602-
00102) (see 7.3.20 [p96]).
Yes
Are there any breaks in the power supply output
cable (30601-EA51) (see 9.3 [p185])?
Yes
Replace the power supply output cable (30601-
EA51).
No
Are there any breaks in the base cable (30601-
EA52) (see 9.3 [p185])?
Yes
Replace the base cable (30601-EA52).
No
Are there any breaks in the BA02 power supply
cable (30601-EA11) (see 9.3 [p185])?
Yes
Replace the BA02 power supply cable (30601-
EA11).
No
End