Nidek Medical NT-510 User manual

NON CONTACT TONOMETER
NT-510/NT-530/NT-530P
SERVICE MANUAL
June 2013
Pages in total: 254
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Table of Contents
1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2. SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3 . 1 Classifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 . 2 Safety Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 . 3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3 . 4 Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4. TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
5. SUBTROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .21
5 . 1 Initial Screen is not Displayed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5 . 1 . 1 Checking power supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 . 1 . 2 Backlight of TFT color LCD does not illuminate . . . . . . . . . . . . . . . . . 23
5 . 2 Error Message Appears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 . 2 . 1 ERR001 (EEPROM error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 . 2 . 2 ERR002 (Date and time setting error) . . . . . . . . . . . . . . . . . . . . . . . . 24
5 . 2 . 3 ERR011 (Character time-out error [OUT]) . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 4 ERR012 (Reception start time-out [OUT]) . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 5 ERR013 (Reception error [OUT]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 . 2 . 6 ERR014 (Reception code error [OUT]) . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 7 ERR015 (Reply time-out [OUT]). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 8 ERR016 (DTR-DSR error [OUT]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 9 ERR017 (Data error [OUT]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 10 ERR018 (Command error [OUT]). . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 11 NO DAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 12 ERR031 (Up/down tracking error) . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 . 2 . 13 ERR032 (Right/left tracking error) . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5 . 2 . 14 ERR033 (Forward/backward tracking error). . . . . . . . . . . . . . . . . . . . 28
5 . 2 . 15 ERR034 (Chinrest up/down movement error) . . . . . . . . . . . . . . . . . . 28
5 . 2 . 16 NO PAPER (No printer paper error). . . . . . . . . . . . . . . . . . . . . . . . . . 29
5 . 2 . 17 ERR044 (Printer hardware error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5 . 2 . 18 ERR201 (Piston error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5 . 2 . 19 ERR202 (Charging error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5 . 2 . 20 ERR601 (USB_A class error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5 . 2 . 21 ERR602 (USB_A recognition error) . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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5 . 2 . 22 ERR700 (Windows file sharing error). . . . . . . . . . . . . . . . . . . . . . . . . 34
5 . 2 . 23 ERR703 (IC error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5 . 2 . 24 ERR704 (DHCP error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5 . 2 . 25 ERR750 (Network access error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5 . 2 . 26 ERR751 (Network writing error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5 . 2 . 27 ERR754 (PC name error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5 . 2 . 28 ERR755 (Read-only folder error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5 . 2 . 29 ERR756 (Log on error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 30 ERR757 (Shared folder error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 31 ERR758 (Time-out error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 32 ERR759 (Deletion error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 . 2 . 33 ERR760 (Initialization error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 2 . 34 ERR761 (Access right error) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 2 . 35 ERR762 (Account error). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 2 . 36 ERR771 (Cable connection error) . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5 . 2 . 37 ERR772 (Response 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5 . 7 Measurement cannot be Performed Properly . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5 . 7 . 1 Pachymetry cannot be performed properly . . . . . . . . . . . . . . . . . . . . 46
5 . 7 . 1 . 1 Blue light does not illuminate during pachymetry . . . . . . . . 47
5 . 7 . 1 . 2 Pachymetry image is not displayed. . . . . . . . . . . . . . . . . . . 48
5 . 7 . 2 Tonometry cannot be performed properly . . . . . . . . . . . . . . . . . . . . . 49
5 . 7 . 2 . 1 Observed image is not displayed on LCD . . . . . . . . . . . . . . 51
5 . 7 . 2 . 2 FIX LED does not illuminate . . . . . . . . . . . . . . . . . . . . . . . . 51
5 . 7 . 2 . 3 AL2 LED does not illuminate . . . . . . . . . . . . . . . . . . . . . . . . 52
5 . 7 . 2 . 4 AL1 LED does not illuminate . . . . . . . . . . . . . . . . . . . . . . . . 53
5 . 7 . 2 . 5 NT ILL does not illuminate. . . . . . . . . . . . . . . . . . . . . . . . . . 53
5 . 7 . 2 . 6 Measurement does not start . . . . . . . . . . . . . . . . . . . . . . . . 54
5. 7. 2. 7
Auto tracking function does not automatically perform alignment . . 55
5 . 7 . 2 . 7 . 1 Automatic alignment in up/down direction
is not performed . . . . . . . . . . . . . . . . . . . . . . . . . 55
5 . 7 . 2 . 7 . 2 Automatic alignment in right/left direction
is not performed . . . . . . . . . . . . . . . . . . . . . . . . . 57
5 . 7 . 2 . 7 . 3 Automatic alignment in forward/backward
direction is not performed . . . . . . . . . . . . . . . . . . 58
5. 7. 2. 8
Measurement does not start even when alignment and focus are achieved . . 59
5 . 7 . 2 . 9 Operating noise of piston is abnormal. . . . . . . . . . . . . . . . . 60
5 . 7 . 2 . 10 “OPEN THE EYE WIDER” appears. . . . . . . . . . . . . . . . . . . 61
5 . 7 . 2 . 11 “NO SEARCH” appears. . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5 . 7 . 2 . 12 “LOW CONF” appears. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
5 . 7 . 2 . 13 Measurement data is abnormal . . . . . . . . . . . . . . . . . . . . . . 62
5 . 8 Communication cannot be Performed Properly . . . . . . . . . . . . . . . . . . . . . . . . . 63
5 . 9 Printing cannot be Performed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
5 . 10 LCD Auto-Sleep Function does not Operate. . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

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6. REMOVAL PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . .67
6 . 1 Measuring Unit Left Cover (18536-M707). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6 . 2 Measuring Unit Right Cover (18536-M708) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6 . 3 Measuring Unit Rear Cover ASSY (18536-6000) . . . . . . . . . . . . . . . . . . . . . . . . 68
6 . 4 Measuring Unit Front Cover ASSY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
6 . 4 . 1 NT-510/NT-530 measuring unit front cover ASSY (18536-6300). . . . 69
6 . 4 . 2 NT-530P measuring unit front cover ASSY (18538-6300) . . . . . . . . . 69
6 . 5 Body Front Cover (18536-M702) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
6 . 6 Body Cover ASSY (18536-7000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
6 . 7 Lid (30601-M003) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6 . 8 Bottom Plate (30601-M002) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6 . 9 Dust Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6 . 9 . 1 NT-510/NT-530 dust cover (15601-M554) . . . . . . . . . . . . . . . . . . . . . 72
6 . 9 . 2 NT-530P dust cover (18538-M354) . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6 . 10 Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6 . 10 . 1 NT-510/NT-530 cover (18536-M540) . . . . . . . . . . . . . . . . . . . . . . . . . 73
6 . 10 . 2 NT-530P cover (18538-M340) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6 . 11 APLPD Shield (18536-M539) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6 . 12 LCD Rear Cover (30601-M716) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6 . 13 LCD Front Cover (30601-M715) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7. REPLACEMENT PROCEDURE . . . . . . . . . . . . . . . . . . . . . .77
7 . 1 ASSYs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7 . 1 . 1 Base ASSY (18536-1000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7 . 1 . 2 Inlet ASSY (18536-1100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
7 . 1 . 3 Body ASSY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
7 . 1 . 3 . 1 NT-510 body ASSY (18536-2000). . . . . . . . . . . . . . . . . . . . 79
7 . 1 . 3 . 2 NT-530 body ASSY (18537-2000). . . . . . . . . . . . . . . . . . . . 81
7 . 1 . 4 Piston ASSY (18536-5200) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7 . 1 . 5 LCD ASSY (18536-6100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7 . 1 . 6 Adjusted NT measuring ASSY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7. 1. 6. 1
NT-510/NT-530 adjusted NT measuring ASSY (18536-9100) . . 84
7 . 1 . 6 . 2 NT-530P adjusted NT measuring ASSY (18538-9100). . . . 85
7 . 1 . 7 Horizontal tracking ASSY (18537-2500) . . . . . . . . . . . . . . . . . . . . . . 86
7 . 1 . 8 R/L motor ASSY (18537-2510) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7 . 1 . 9 F/B motor ASSY (18537-2520) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7 . 1 . 10 Chinrest ASSY (15601-1500). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
7 . 1 . 11 Joystick ASSY (30601-2600) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
7 . 1 . 12 Brake ASSY (30601-2300). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
7 . 1 . 13 Pachy photodetector ASSY (18538-3200) . . . . . . . . . . . . . . . . . . . . . 91
7 . 2 Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
7 . 2 . 1 Main board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
7 . 2 . 2 Driver board (18536-BA03) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
7 . 2 . 3 Base board (18536-BA05) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
7 . 2 . 4 LCD board (18536-BA06). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
7 . 2 . 5 SLPOS encoder board (18536-BA19) . . . . . . . . . . . . . . . . . . . . . . . . 96

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7 . 2 . 6 Solenoid board (18536-BA20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
7 . 2 . 7 NT board (18536-BA21) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7 . 2 . 8 Pressure sensor board (18536-BA22) . . . . . . . . . . . . . . . . . . . . . . . . 97
7 . 2 . 9 Front/RL sensor board (18536-BA25) . . . . . . . . . . . . . . . . . . . . . . . . 98
7 . 2 . 10 Pachy board (18538-BA26) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
7 . 2 . 11 DC-AC inverter (18535-E010) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
7 . 2 . 12 Left panel SW board (30601-BA07) . . . . . . . . . . . . . . . . . . . . . . . . . . 99
7 . 2 . 13 U/D SW board (30601-BA09). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
7 . 2 . 14 Right panel SW board (30601-BA15). . . . . . . . . . . . . . . . . . . . . . . . 100
7 . 2 . 15 Printer interface board (80606-00019) . . . . . . . . . . . . . . . . . . . . . . . 101
7 . 3 Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
7 . 3 . 1 SLPOS sensor (18536-EA22) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
7 . 3 . 2 FIX LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
7 . 3 . 2 . 1 NT-510/NT-530 FIX LED (18536-EA26) . . . . . . . . . . . . . . 103
7 . 3 . 2 . 2 NT-530P FIX LED (18538-EA26) . . . . . . . . . . . . . . . . . . . 103
7 . 3 . 3 Front/RL sensor (18536-EA33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
7 . 3 . 4 U/D sensor (18536-EA47) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
7 . 3 . 5 Solenoid (18536-EA71) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
7 . 3 . 6 R/L motor (18537-EA42) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
7 . 3 . 7 F/B motor (18537-EA43) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
7 . 3 . 8 R/L sensor (18537-EA45). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
7 . 3 . 9 F/B sensor (18537-EA46). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
7 . 3 . 10 Pachy LED (18538-EA75) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
7 . 3 . 11 Gear-equipped brushless motor (15601-E008) . . . . . . . . . . . . . . . . 111
7 . 3 . 12 Primary unit (15601-EA01). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
7 . 3 . 13 Chinrest (15601-EA53). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
7 . 3 . 14 B/W CCD camera (30601-E001) . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
7 . 3 . 14. 1 B/W CCD camera of CCD camera ASSY . . . . . . . . . . . . . 113
7 . 3 . 14. 2 B/W CCD camera of pachy photodetector ASSY . . . . . . . 113
7 . 3 . 15 Switching power supply (80602-00102) . . . . . . . . . . . . . . . . . . . . . . 114
7 . 3 . 16 Printer (80606-00018) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
7 . 3 . 17 TFT color LCD (80607-00024) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
7 . 4 Mechanical Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
7 . 4 . 1 Sliding plate (32105-M102) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
7 . 4 . 2 F/B shaft (30601-M103) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
7 . 4 . 3 R/L shaft (30601-M201) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
7 . 4 . 4 Linear bearing for F/B shaft (82001-LM028) . . . . . . . . . . . . . . . . . . 118
7 . 4 . 5 Linear bearing for R/L shaft (82001-LM097) . . . . . . . . . . . . . . . . . . 118
8. ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
8 . 1 Entering Each Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
8 . 1 . 1 NT adjustment mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
8 . 1 . 2 Pachy adjustment mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
8 . 1 . 3 Pachy calibration mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
8 . 1 . 4 Maintenance mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
8 . 1 . 5 Inspection mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
8 . 1 . 5 . 1 NT inspection mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

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8 . 1 . 5 . 2 Pachy inspection mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
8 . 1 . 6 Parameter settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
8 . 2 Attaching Jigs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
8 . 2 . 1 IR sensor sticker (18503-G021) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
8 . 2 . 2 Artificial eye B (18530-G002) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
8 . 2 . 3 NT-4 optical adjustment jig (18541-1019) . . . . . . . . . . . . . . . . . . . . 127
8 . 2 . 4 Chinrest attachment jig (32107-1100) . . . . . . . . . . . . . . . . . . . . . . . 128
8 . 2 . 5 Chinrest attachment joint (32107-2100) . . . . . . . . . . . . . . . . . . . . . . 128
8 . 2 . 6 Model eyes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
8 . 2 . 6 . 1 Electric model eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
8 . 2 . 6 . 1 . 1 Electric model eye (18512-0310) . . . . . . . . . . . 129
8 . 2 . 6 . 1 . 2 Electric model eye (18570-1100) . . . . . . . . . . . 130
8 . 2 . 6 . 2 Triple calibration model eye (18512-0210) . . . . . . . . . . . . 131
8 . 2 . 6 . 3 Single calibration model eye . . . . . . . . . . . . . . . . . . . . . . . 132
8 . 2 . 7 Pachy adjustment jig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
8 . 2 . 7 . 1 NT-5P optical adjustment jig (18570-2300). . . . . . . . . . . . 133
8 . 2 . 7 . 2 Pachy phototransmitter adjustment jig (18570-2100) . . . . 133
8 . 2 . 7 . 3 Pachy calibration jig (18570-2500) . . . . . . . . . . . . . . . . . . 134
8 . 2 . 7 . 4 Pachy adjustment model eye holder (18570-2600). . . . . . 134
8 . 2 . 7 . 5 Filter jig (18541-1034) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
8 . 3 Tonometer Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
8 . 3 . 1 Camera focus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
8 . 3 . 2 Optical reticle position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
8 . 3 . 3 NT camera position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
8 . 3 . 4 AL2 LED optical axis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
8 . 3 . 5 Alignment spot intensity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
8 . 3 . 5 . 1 When using NT-4 optical adjustment jig (18541-1019) . . . 139
8 . 3 . 5 . 2 When using model eye (CL) (32961-0700) . . . . . . . . . . . . 140
8 . 3 . 6 NT board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
8 . 3 . 6 . 1 AL2 LED offset voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
8 . 3 . 6 . 2 AL2 LED balance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
8 . 3 . 7 Fixation light position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
8 . 3 . 7 . 1 NT-510/NT-530 fixation light . . . . . . . . . . . . . . . . . . . . . . . 143
8 . 3 . 7 . 2 NT-530P fixation light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
8 . 3 . 8 Solenoid brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
8 . 3 . 9 Puffed air pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
8 . 3 . 10 Reference marker position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
8 . 3 . 11 Applanation detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
8 . 3 . 12 Focusing indicator check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
8 . 3 . 13 Model eye measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
8 . 3 . 13. 1 Silicon model eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
8 . 3 . 13. 2 Electric model eye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
8 . 3 . 14 A/B constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
8 . 4 Pachymeter Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
8 . 4 . 1 Pachy illumination ASSY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
8 . 4 . 1 . 1 PACHY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
8 . 4 . 1 . 2 PACHY LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

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8 . 4 . 2 Pachy photodetector ASSY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
8 . 4 . 2 . 1 STAGE ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
8 . 4 . 2 . 2 PACHY WD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
8 . 4 . 2 . 3 PACHY IMAGE POSITION . . . . . . . . . . . . . . . . . . . . . . . . 166
8 . 4 . 3 Pachy calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
8 . 4 . 3 . 1 PARALLELISM ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . 168
8 . 4 . 3 . 2 CALIBRATION MODEL SELECT . . . . . . . . . . . . . . . . . . . 170
8 . 4 . 3 . 3 LED & MEAS AREA ADJ . . . . . . . . . . . . . . . . . . . . . . . . . 171
8 . 4 . 3 . 4 CCT CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
8 . 4 . 3 . 5 CCT CALIBRATION CHECK. . . . . . . . . . . . . . . . . . . . . . . 175
8 . 4 . 3 . 6 R CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
8 . 4 . 3 . 7 R CALIBRATION CHECK . . . . . . . . . . . . . . . . . . . . . . . . . 180
8 . 4 . 3 . 8 LED ADJUSTMENT (CORNEA) . . . . . . . . . . . . . . . . . . . . 182
8 . 4 . 4 Pachy inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
8 . 5 Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
8 . 5 . 1 Intensity of LED for corneal illumination . . . . . . . . . . . . . . . . . . . . . . 189
8 . 5 . 2 AUTO TRC ADJUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
8 . 5 . 3 TRC LIMIT ADJUST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
8 . 5 . 4 CHIN CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
8 . 5 . 5 CURSOR BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
8 . 6 Settings After Replacement of Measuring Unit . . . . . . . . . . . . . . . . . . . . . . . . . 193
8 . 6 . 1 APL gain and A/B constant settings . . . . . . . . . . . . . . . . . . . . . . . . . 193
8 . 6 . 2 Solenoid brake setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
8 . 6 . 3 Reference marker setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
8 . 6 . 4 AL1 LED intensity setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
8 . 6 . 5 AL2 LED intensity setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
8 . 7 Software Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
8 . 8 EEPROM Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
8 . 9 Restoring EEPROM Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
8 . 10 BACKUP / RESTORE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
8 . 10 . 1 BACKUP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
8 . 10 . 2 RESTORE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
8 . 11 Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
8 . 12 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
8 . 12 . 1 Observation window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
8 . 12 . 2 Air nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
8 . 12 . 3 Pachymetry window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
8 . 12 . 4 Window (18536-G0147) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
9. SUPPLEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207
9 . 1 Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
9 . 1 . 1 NT-510/NT-530 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
9 . 1 . 2 NT-530P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
9 . 2 Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
9 . 2 . 1 NT-510/NT-530 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
9 . 2 . 2 NT-530P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
9 . 3 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

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9 . 3 . 1 NT-510 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
9 . 3 . 2 NT-530 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
9 . 3 . 3 NT-530P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
9 . 4 Connector Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
9 . 5 Error Message List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
9 . 6 Parameter List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
9 . 6 . 1 NT-510 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
9 . 6 . 2 NT-530 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
9 . 6 . 3 NT-530P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
9 . 7 Jigs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
9 . 7 . 1 Jig list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
9 . 7 . 2 Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
9 . 8 Adjustment Item List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
9 . 8 . 1 ASSYs and adjustment items. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
9 . 8 . 2 Boards and adjustment items. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
9 . 8 . 3 Electrical parts and adjustment items. . . . . . . . . . . . . . . . . . . . . . . . 250
9 . 9 Screw List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

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1 INTRODUCTION
This Service Manual describes repair procedures of NON CONTACT TONOMETER, the NT-510/
NT-530/NT-530P.
To conduct repairs properly, 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 NT-510/NT-530/NT-530P.
In case the device cannot be repaired by 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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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 reasons, 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 breaker of the device and disconnect the power
cord from the wall outlet unless the power needs to be on.
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 precaution
1 ) To sterilize the device, wipe the device exterior (especially the parts that come into
contact with the patient) with a cloth dampened with rubbing alcohol.
2 ) To sterilize the air nozzle, clean it with a cotton swab dampened with rubbing alcohol.

XNT5P*RDA002E
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5 . Maintenance cautions
1 ) Take antistatic precautions prior to repair.
2 ) Take proper care against electric shock during repair.
3 ) Tighten or loosen screws with proper tools.
4 ) Never drop parts or screws inside the device.
5 ) Prepare storage cases so as not to lose the removed screws or parts.
6 ) After loosening the screws fastened by a threadlocking adhesive, be sure to reapply
the threadlocking adhesive to the screws when retightening them.
7 ) After replacing parts, confirm that they are fastened in their original positions securely
before turning on the power.
8 ) See Wiring Diagram and Connecting Cable to check cable breaks as described in
TROUBLESHOOTING. In addition, check cables for the following:
a . Connectors are connected and crimped properly.
b . No contact failure occurs after re-connection of connectors.
c . 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.
9 ) The labeled area indicates high voltage. Take proper precautions against electric
shock.
10) 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:
11) 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.
6 . 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.
7 . Caution after repairs
1 ) 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
1 ) The NT-510, NT-530, and NT-530P are classified as Class I devices.
2 ) 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
1 ) The NT-510, NT-530, and NT-530P are classified as devices with a Type B Applied
Part.
2 ) A Type B Applied Part provides a particular degree of protection against electrical
shock, particularly regarding the following:
- allowable leakage current
- reliability of the protective earth connection (if applicable)
3 . Conformity to electromagnetic compatibility standard
1 ) The NT-510, NT-530, and NT-530P conform to IEC60601-1-2: 2007.
4 . Degree of protection against harmful ingress of water: IPX0
1 ) The NT-510, NT-530, and NT-530P provide no protection against ingress of water
with harmful effects.
2 ) Avoid splashing water or other liquids on or near the device.
5 . Method (s) of sterilization or disinfection recommended by the manufacturer
1 ) The NT-510, NT-530, and NT-530P include parts that need sterilization or disinfection.
6 . Degree of safety of application in the presence of a flammable anaesthetic mixture with air,
or with oxygen or nitrous oxide
1 ) The NT-510, NT-530, and NT-530P are not suitable for use in the presence of a flam-
mable anaesthetic mixture with air, or with oxygen or nitrous oxide.
7 . Mode of operation
1 ) The NT-510, NT-530, and NT-530P are continuous operating devices.
8 . Installation and use
1 ) The NT-510, NT-530, and NT-530P are classified as stationary devices.
3.2 Safety Features
* To ensure safe use, the device is provided with the following safety features.
1 . Patient sensor
1 ) Detects the presence of a patient in front of the device while checking the puffed air.
2 ) When the sensor detects the patient, the puffed air check is not performed.
2 . Safety stopper
1 ) Provides a safety space so that the air nozzle does not come into contact with the
patient's eye during measurement.
2 ) The amount of space needed for safety differs depending on the patient. Change the
position of the stopper for each patient to secure the proper amount of space for
safety.

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3.3 Specifications
1 . Intraocular pressure measurement
1 ) Measurable range 1 to 60 mmHg
Displayed as 1 mmHg
2 ) Measurement range APC40, APC60, 40, 60
3 ) Working distance 11 mm
4 ) Chart Fixation target: Green (Selectable between the bilking
target and continuously-lit target)
2 . Pachymetry (NT-530P only)
1 ) Measurable range 150 to 1300 µm
2 ) Measurement increments 1 µm
3 . Working range of auto-tracking
1 ) Up and down 32 mm or more
2 ) Right and left (except NT-510) ±5 mm
3 ) Back and forth (except NT-510) ±5 mm
4 . Movable range of horizontal direction (by joystick)
1 ) Back and forth 36 mm or more
2 ) Right and left 85 mm or more
5 . Other functions
1 ) Alignment/observation method 5.7-inch color LCD display
2 ) Printer Thermal line printer with auto cutter
Width 58 mm
3 ) Interface connectors
a . RS-232C: 1 port (OUT)
b.USB: 1port
c . LAN: 1 port
6 . Dimensions and mass
1 ) NT-510, NT-530
a . Dimensions 260 mm (W) ×481 mm (D) ×457 mm (H)
b.Mass 19kg
c . Power source AC 100 to 240 V ±10%
50/60 Hz
d . Power consumption 100 VA
2)NT-530P
a . Dimensions 260 mm (W) ×481 mm (D) ×474 mm (H)
b.Mass 20kg
c . Power source AC 100 to 240 V ±10%
50/60 Hz
d . Power consumption 100 VA
7 . Environmental conditions (during use)
1 ) Temperature 10 to 35 °C (50 to 95°F)
2 ) Humidity 30 to 90% (non-condensing)
3 ) Atmospheric pressure 800 to 1060 hPa
4 ) Others Dust-free and smoke-free
8 . Environmental conditions (during transport and storage)
1 ) Temperature -10 to 55 °C (14 to 131°F)
2 ) Humidity 10 to 95% (non-condensing)
3 ) Atmospheric pressure 700 to 1060 hPa

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3.4 Others
1 . Installation category II (Overvoltage category)
2 . Pollution degree 2 (IEC60664)
3 . Service life 8 years from the date of initial operation (certified)
Proper maintenance, check, and replacement of con-
sumable parts are necessary.
4 . Packaging unit 1 unit
Specifications and appearance are subject to change for improvement without notice.

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4 TROUBLESHOOTING
Plug the power cord and turn on the power switch.
Is the initial screen displayed?
No
5.1 Initial Screen is not Displayed (p21)
Yes
Does any error message appear?
No
5.2 Error Message Appears (p24)
Yes
Are the function buttons operational?
No
5.3 Function Buttons are not Operational (p40)
Yes
Does the measuring unit move along the base
unit?
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 (p44)
Yes
Can measurement be performed properly?
No
5.7.2 Tonometry cannot be performed properly
(p49)
Yes
Can communication be performed properly?
No
5.8 Communication cannot be Performed Properly
(p63)
Yes

XNT5P*RDA002E
20
Can printing be performed properly?
No
5.9 Printing cannot be Performed (p64)
Yes
Does the LCD screen auto-sleep function operate?
No
5.10 LCD Auto-Sleep Function does not Operate
(p65)
Yes
Turn off the power switch.