Nidek Medical LT-1000 User manual

May 2006
Pages in total: 38
LLT8*RDA001A/E
SATELLITE TRACER
Model LT- 1000
SERVICE MANUAL

NIDEK CO., LTD. : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan
(Manufacturer) Telephone: [phone]
Facsimile: (0533) 67-6610
NIDEK CO., LTD : 6th Floor, Takahashi Bldg., No.2, 3-chome, Kanda-jinboucho
(Tokyo Office) Chiyoda-ku, Tokyo 101-0051, Japan
Telephone: [phone]
Facsimile: [phone]
Telex: 2226647 NIDEK J
NIDEK INCORPORATED : 47651 Westinghouse Drive, Fremont, California 94539, U. S. A.
(United States Agent) Telephone: [phone]
Facsimile: [phone]
NIDEK SOCIETE ANONYME : Europarc 13, rue Auguste Perret, 94042 CRETEIL, France
(Authorized Representative) Telephone: [phone]
Facsimile: (01) 49 80 32 08

Table of Contents
§ 1 INTRODUCTION ............................................................................. 1-1
§
2 SAFETY PRECAUTIONS ............................................................. 2-1
2.1 General ..................................................................................................................... 2-1
2.2 During Service...........................................................................................................2-1
§ 3 TROUBLESHOOTING................................................................... 3-1
§
4 SUB TROUBLESHOOTING .......................................................... 4-1
4.1 The LT-1000 does not Start.......................................................................................4-1
4.2 The Color LCD Display is Abnormal. .........................................................................4-2
4.2.1 The back light does not light up. ......................................................................4-2
4.3 The Touch Panel is not Operational. .........................................................................4-3
4.4 The Main Screen is not Displayed on the Color LCD. ...............................................4-4
4.5 Frames are not Traced. ............................................................................................. 4-4
4.5.1 Initialization does not start. ...............................................................................4-5
4.5.2 Tracing does not start. .....................................................................................4-5
4.5.3 No traced data is displayed. ............................................................................ 4-6
§ 5 REMOVING PROCEDURE.............................................................. 5-1
5.1 Top Cover ASSY. .......................................................................................................5-1
5.2 Cable Cover ..............................................................................................................5-1
5.3 LCD Rear Cover ........................................................................................................ 5-2
§ 6 REPLACEMENT PROCEDURE ...................................................... 6-1
6.1 Tracer ASSY. .............................................................................................................6-1
6.2 Switching Power Supply ............................................................................................6-1
6.3 Cable Assembly ......................................................................................................... 6-2
6.4 Fan Assembly ............................................................................................................ 6-2
6.5 Color LCD Module .....................................................................................................6-2
6.6 Inverter ......................................................................................................................6-3
6.7 Printed Circuit Board .................................................................................................6-3
6.7.1 BA04 board ......................................................................................................6-3
6.7.2 BA01 board ......................................................................................................6-3
6.7.3 BA02 board ......................................................................................................6-4
6.7.4 BA05 board ......................................................................................................6-4
6.7.5 BA03 board ......................................................................................................6-5
6.7.6 Seesaw switch .................................................................................................6-5

§ 7 ADJUSTMENT ................................................................................ 7-1
7.1 Touch Panel Calibration ............................................................................................ 7-1
7.2 Tracing Unit Calibration .............................................................................................7-1
7.2.1 Calibration with standard frames......................................................................7-1
7.2.2 Calibration with standard pattern .....................................................................7-2
7.2.3 Torque calibration ............................................................................................ 7-3
7.2.4 Full calibration .................................................................................................7-3
7.3 Displaying Parameter Setting Screen ........................................................................ 7-5
7.4 Time and Date Settings .............................................................................................7-6
7.5 Software Upgrade .....................................................................................................7-6
§ 8 INFORMATION ................................................................................ 8-1
8.1 Wiring Diagram ..........................................................................................................8-1
8.2 Appearance ............................................................................................................... 8-2
8.3 Labels........................................................................................................................8-4
8.4 Error Code Table .......................................................................................................8-5
8.5 Factory Setting of Tracing Unit ..................................................................................8-5
8.6 Parameter Setting Table ............................................................................................8-6
§ 9 SUPPLEMENT ................................................................................ 9-1
9.1 Abbreviation for Screws ............................................................................................. 9-1

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• This service manual is for the SATELLITE TRACER LT-1000. It does not include technical
information for preparing lenses.
• This manual is thoroughly understood before servicing.
• Refer to the SATELLITE TRACER LT-1000 Operator’s Manual and Parts List.
• Specifications are subject to change without notice for improvement. Refer to the Technical
Bulletin for important changes.
• In case the instrument can not be repaired according to the procedures described in this
manual, please report the serial number of the instrument and details of the symptom or
symptoms.
§
1 INTRODUCTION

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§
2 SAFETY PRECAUTIONS
2.1 General
• Servicing should be performed by NIDEK service persons or other qualified personnel.
• Perform all servicing according to the procedures described in this manual. Failure to do
so may cause unexpected accident or malfunction.
• Be sure to turn the power off during servicing unless there is an instruction to turn it on.
• Never use organic solvents such as a paint thinner to clean the exterior of the instrument.
It may ruin the surface of the instrument.
2.2 During Service
• If malfunction occurs, check the symptom and turn the power off.
• Do not lose or drop removed parts inside the instrument. Prepare a case beforehand to
store loose parts. Take care not to bump the instrument.
• Use suitable tools to screw or unscrew the screws.
• Apply a threadlocking adhesive to the screws which have been loosened and tightened
again.
• After part replacement, check that all parts are fixed in their original positions securely.
• If the LT-1000 produces smoke or strange odors, immediately turn the power off and
disconnect the electrical plug from the outlet. Usage of the instrument under such abnormal
conditions may cause fire or electric shock.
• In §3 TROUBLESHOOTING, when checking a break in a cable, also check the following
according to the wiring diagram.
1. Proper connections and crimping
2. Proper contact by connecting and disconnecting connectors
3. Proper soldering
• Do not yank the cables with excessive force. Doing so could cause breakage.
• Do not perform servicing with wet hands. Doing so could cause electric shock or
malfunction.
• Never install the instrument in a place where it is exposed to water.
• Do not use adjustment jigs for other than the intended purpose.

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§
3 TROUBLESHOOTING
Plug the power cord in the wall outlet and turn the
power switch on.
Does the LT-1000 start?
Is the color LCD display normal?
Is the LT-1000 touch panel operational?
Are frames traced?
4.1 The LT-1000 does not start.
4.2 The color LCD display is abnormal.
4.5 Frames are not traced.
Yes
Yes
Yes
No
No
No
4.3 The touch panel is not operational.
No
End
Yes
Is the main screen displayed on the color LCD? 4.4 The main screen is not displayed on the color
LCD.
Yes
No

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