LLT9A*RDA002A 1 INTRODUCTION This Service Manual describes repair procedures of the NIDEK Satellite Tracer, LT-980. 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 LT-980.
Page 8
LLT9A*RDA002A This page is intentionally left blank.
LLT9A*RDA002A 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 NIDEK in writing is required.
Page 10
LLT9A*RDA002A * Do not yank the cables with excessive force. Doing so could cause cable break- age. * Never perform servicing with wet hands. Doing so could cause electric shock or malfunction 9 ) The labeled area indicates high voltage. Take proper precautions against electric shock.
LLT9A*RDA002A 3 SPECIFICATIONS 1 . Tracing unit 1 ) Automatic tracing Both eyes / single eye 2 ) Semiauto tracing Both eyes / single eye 3 ) Pattern tracing 2 . Measurement range 1 ) Frame tracing a . Circumference Condition: To be measured with the standard frame of which circumference is known Error: ±0.05 mm...
Page 12
LLT9A*RDA002A This page is intentionally left blank.
LLT9A*RDA002A 4 TROUBLESHOOTING Turn on the power switch. Does the LT-980 start properly? 5.1 LT-980 does not Start Properly (p15) Is tracing conducted properly? 5.2 Tracing cannot be Conducted Properly (p26) Is the trace data normal? 5.3 Trace Data is not Normal (p27) Can Tracer Utility be connected? 5.4 Tracer Utility cannot be Connected (p29)
Page 14
LLT9A*RDA002A This page is intentionally left blank.
LLT9A*RDA002A 5 SUBTROUBLESHOOTING 5.1 LT-980 does not Start Properly Is the fan rotating? 5.1.1 Fan is not rotating (p16) Do three short beeps sound? 5.1.3 Error occurs (p20) Do four short beeps sound and all indicators above Replace the tracer ASSY (40601-0010) (see 7.1.1...
(see Are the slow-blow fuses (80402-02039) blown? 7.3.1 [p38]). Are there any breaks in the power cord of the LT- Replace the power cord of the LT-980. (see 9.3 [p69] and 9.4 [p70])? Remove the cover ASSY (44801-2000) (see 6.1 [p31]).
Page 17
Turn on the power switch. Are the voltages between the CN2 1st and 4th, and Replace the switching regulator (44801-E012) (see 2nd and 3rd pins of the switching regulator (44801- 7.3.3 [p40]). E012) DC 24 V ±1 V? Replace the LT-980.
LLT9A*RDA002A 5.1.2 Initialization is not conducted properly The indicator above blinks during initialization. When initialization is complete properly, the indicator above illuminates. Does the indicator above the button illuminate? 5.1.2.1 Indicator does not illuminate (p19) Turn off the power switch. Remove the top cover ASSY (44801-2000) (see [p31]).
LLT9A*RDA002A 5.1.2.1 Indicator does not illuminate Replace the switch sheet (44801-E030) (see 7.3.5 Is initialization conducted properly? [p42]). Turn off the power switch. Remove the top cover ASSY (44801-2000) (see [p31]). Are there any breaks in the cable ASSY (41971- Replace the cable ASSY(41971-CA06).
LLT9A*RDA002A 5.1.3 Error occurs The LT-980 is not equipped with error display function. Use the Error History display function of Tracer Utility to confirm error contents (see 8.1.2 [p47]). ERROR20, ERROR51, and ERROR1000 and later occur when the tracer ASSY (40601- 0010) is defective.
LLT9A*RDA002A 5.1.3.3 ERROR19: Trace cancel Conduct tracing again. 5.1.3.4 ERROR20: H-axis encoder error The tracer ASSY (40601-0010) is defective. When repairing the tracer ASSY (40601-0010), refer to the service manual for the tracer ASSY (LETR-1). Perform the procedure as in “7.1.1 Tracer ASSY (40601-0010)” (p33). 5.1.3.5 ERROR21: No frame Is tracing conducted with no frame set? Set a frame and conduct tracing again.
LLT9A*RDA002A 5.1.3.8 ERROR26: Pattern trace Z-axis move error Confirm the pattern size and conduct tracing again. Is the problem resolved? Replace the tracer ASSY (40601-0010) (see 7.1.1 [p33]). 5.1.3.9 ERROR48: Stylus came off (upper) Set the frame in the center and conduct tracing Is the trace position beyond the traceable range? again.
LLT9A*RDA002A 5.1.3.10 ERROR49: Trace radii error Is tracing conducted within the traceable range? Tracing is not possible. Conduct tracing again while holding the frame so Did the frame move during frame tracing? that it does not move. Does the frame have a sharp change in its shape? Tracing is not possible.
LLT9A*RDA002A 5.1.3.12 ERROR51: V-axis encoder error Replace the tracer ASSY (40601-0010) (see 7.1.1 [p33]). The tracer ASSY (40601-0010) is defective. When repairing the tracer ASSY (40601-0010), refer to the service manual for the tracer ASSY (LETR-1). 5.1.3.13 ERROR52: Z data start and end points error Attach the stylus (40601-7910) securely (see 7.4.1 Is the attachment of the stylus (40601-7910) loose?
LLT9A*RDA002A 5.1.3.14 ERROR53: Shape calculation error Does a frame, pattern, or dummy lens have a sharp Tracing is not possible. change in its shape? Set the frame in the center and conduct tracing again. Replace the tracer ASSY (40601-0010) (see 7.1.1 [p33]).
LLT9A*RDA002A 5.2 Tracing cannot be Conducted Properly Conduct tracing again. Is frame tracing conducted although the pattern Replace the tracer ASSY (40601-0010) (see 7.1.1 setting unit (40601-7000) is set? [p33]). Do three short beeps sound? 5.1.3 Error occurs (p20) Replace the tracer ASSY (40601-0010) (see 7.1.1 Do four short beeps sound? [p33]).
LLT9A*RDA002A 5.3 Trace Data is not Normal Is frame tracing conducted? 5.3.1 Frame trace data is not normal (p27) Is pattern tracing conducted? 5.3.2 Pattern trace data is not normal (p28) 5.3.1 Frame trace data is not normal Attach the stylus (40601-7910) securely (see 7.4.1 Is the attachment of the stylus (40601-7910) loose? [p43]).
LLT9A*RDA002A 5.3.2 Pattern trace data is not normal Conduct the standard pattern calibration (see 8.2.3 [p58]). Conduct full calibration (see 8.2.1 [p52]). Replace the tracer ASSY (40601-0010) (see 7.1.1 [p33]).
LLT9A*RDA002A 5.4 Tracer Utility cannot be Connected A USB cable or RS-232C cable is used as the communication cable between the LT-980 and PC. Troubleshooting differs depending on which cable is connected. Is a USB cable connected as the communication 5.4.2 When USB cable is connected (p30)
LLT9A*RDA002A 5.4.2 When USB cable is connected Is the USB driver installed? Install the USB driver. Turn off the power switch. Are there any breaks in the USB cable (44801- Replace the USB cable (44801-E025). E025)? Confirm the setting of Tracer Utility (refer to the service manual for the LETR-1).
LLT9A*RDA002A 6 REMOVAL PROCEDURE 6.1 Top Cover ASSY (44801-2000) 1 . Turn off the power switch and disconnect the power cord. 2 . Loosen the machine screws (82053- C308G [n = 4]). 3 . Remove the top cover ASSY (44801- 2000).
Page 32
LLT9A*RDA002A This page is intentionally left blank.
ASSY is mounted Shape data Trace Data Type transmission method 2 . Turn off the power switch of the LT-980. 3 . Disconnect the power cord. 4 . Replace the tracer ASSY (40601-0010). 1 ) Remove the top cover ASSY (44801-2000) (see 6.1...
Page 34
LLT9A*RDA002A 2 ) Disconnect P114 (J14) of the cable ASSY (41971-CA06), P115 (J15) of the cable ASSY (44801-CA04), P116 (J16) of the cable ASSY (44801-CA05), and P117 (J17) of the cable ASSY (44801-CA06) from the main board (40601-BA01) (see 9.3 [p69] and 9.5.1 [p72]).
LLT9A*RDA002A 7.1.2 Rear panel ASSY (44801-1100) 1 . Push down the lock lever above the fuse holder (80401-00033) in the direction of the arrow as shown below and remove the fuse holder (80401-00033) along with the fuses. Lock lever Fuse holder 80401-00033 2 .
LLT9A*RDA002A 7.2.2 USB board (44801-BA03) Replacement part: 44801-BA03 1 . Remove the top cover ASSY (44801- 2000) (see 6.1 [p31]). 82053-C308G 2 . Disconnect P301 of the cable ASSY (44801-CA06) from J1 on the USB board (44801- BA03) (see 9.3 [p69] and 9.4 [p70]).
7.3.1 Slow-blow fuse (80402-02039) Replacement part: 80402-02039 1 . Turn off the power switch of the LT-980. 2 . Disconnect the power cord from the power inlet. 3 . Push down the lock lever above the fuse holder (80401-00033) in the direction of the arrow as shown below and remove the fuse holder (80401-00033) along with the slow-blow fuses (80402-02039 [n = 2]).
LLT9A*RDA002A 7.3.2 Rocker switch (80460-00133) Replacement part: 80460-00133 1 . Remove the top cover ASSY (44801- 2000) (see 6.1 [p31]). 82053-C308G 2 . Remove the FV terminals of the cable ASSYs (44801-CA01, 44801-CA03) connected to the rocker switch (80460-00133) (see 9.3 [p69] and 9.4 [p70]).
LLT9A*RDA002A 7.3.3 Switching power supply (44801-E012) Replacement part: 44801-E012 1 . Remove the top cover ASSY (44801- 2000) (see 6.1 [p31]). 82053-C308G 2 . Remove the rear panel ASSY (44801- 1100) (see 7.1.2 [p35]). 44801-1100 3 . Disconnect CN1 of the cable ASSY (44801-CA03) and CN2 of the cable ASSY (44801-CA04) from the switching power supply (44801-E012) (see 9.3 [p69] and 9.4...
LLT9A*RDA002A 7.3.4 Fuse holder (80401-00033) Replacement part: 80401-00033 1 . Remove the top cover ASSY (44801- 2000) (see 6.1 [p31]). 82053-C308G 2 . Remove the rear panel ASSY (44801- 1100) (see 7.1.2 [p35]). 44801-1100 3 . Remove the FV terminals of the cable ASSYs (44801-CA01 and 44801-CA02) connected to the fuse holder (80401-00033) (see 9.3 [p69] and 9.4...
LLT9A*RDA002A 7.3.5 Switch sheet (44801-E030) Replacement part: 44801-E030 1 . Remove the top cover ASSY (44801- 2000) (see 6.1 [p31]). 82053-C308G 2 . Disconnect P202 (J2) of the switch sheet (44801-E030) from the SW connection board (44801-BA02). 44801-BA02 3 . Peel off the switch sheet (44801-E030) from the top cover ASSY (44801-2000).
LLT9A*RDA002A 7.4 Mechanical Parts 7.4.1 Stylus ASSY (40601-7910) Replacement part: 40601-7910 1 . Gently move the lower slider ASSY (40601-6200) to the front to open the upper slider ASSY (40601-6100) and lower slider ASSY (40601-6200). Attaching the pattern setting unit (40601-7000) makes it easier to conduct the task.
Page 44
LLT9A*RDA002A This page is intentionally left blank.
PC. Never disconnect the cable during activation of Tracer Utility. 1 . Turn off the power switch of the LT-980. 2 . Connect the LT-980 and a Tracer Utility-installed PC with a RS-232C cable or USB cable. LT-980 RS-232C 3 .
Page 46
LLT9A*RDA002A 6 . When Tracer Utility recognizes the LT-980, the mode display in the lower-left corner of the screen becomes “LETR-1 Mode”. If Tracer Utility does not recognize the LT- 980, refer to “5.7 Tracer Utility cannot be Connected” in the service manual for the...
LLT9A*RDA002A 8.1.2 Checking the error contents The LT-980 is not equipped with error display function. Use the Error History function of Tracer Utility to check error contents. Perform the procedure as in “8.1.1 Con- necting and activating Tracer Utility” (p45).
Page 48
LLT9A*RDA002A 2 ) The lower-half area lists 10 system errors. Errors are listed in order of occurrence with the most recent on top. 4 . Exit Tracer Utility. 5 . Turn off the power switch of the LT-980.
LLT9A*RDA002A 8.1.3 Checking the parameter data Perform the procedure as in “8.1.1 Con- necting and activating Tracer Utility” (p45). 2 . Select “File” → “Parameter adjustment” from the menu bar. 3 . The Manual parameter adjustment window is displayed.
LLT9A*RDA002A 8.1.4 Changing the parameter data Never change the parameter data enclosed in red. 1 Frame Offset R 2 Frame Offset L Caution 3 Pattern Offset 4 Serial No. Perform the procedure as in “8.1.3 Check- ing the parameter data” (p49). 2 .
Page 51
LLT9A*RDA002A 4 . Click “Close” to close the Manual parame- ter adjustment window. 5 . Click “×” to exit Tracer Utility. 6 . Turn off the power switch of the LT-980.
(see 9.8 [p77]). Standard pattern Standard frame 1 . Turn off the power switch of the LT-980. 2 . Unscrew FK2 × 3 (n = 4) to remove the Y axis cover (40601-M351) and stylus cover (40601-M108). 40601-M108...
Page 53
LLT9A*RDA002A Two short beeps sound and initialization starts. When the indicator above illuminates, the buttons may be released. The indicator above blinks. 5 . Set the pattern setting unit (40601-7000) 40601-7000 attached with the standard pattern (41476-M002) to the tracer. 41476-M002 6 .
Page 54
12. Set the pattern setting unit (40601-7000) 40601-7000 attached with the standard pattern (41476-M002) to the tracer. 41476-M002 13. Press Calibration starts. Calibration takes about 30 seconds. A short beep sounds and calibration is complete. 14. Turn off the power switch of the LT-980.
Page 55
LLT9A*RDA002A 15. Remove the pattern setting unit (40601- 40601-7000 7000) attached with the standard frame (41476-M002). 41476-M002 16. Reassemble the Y axis cover (40601- M351) and stylus cover (40601-M108). 40601-M108 40601-M351...
Use the standard frame (40601-7500) included in the standard accessories (see 9.8 [p77]). Standard frame 1 . Turn on the power switch of the LT-980. When initialization is complete, the indica- tor above illuminates. 2 . Activate Calibration mode. 1 ) While pressing , press A short beep sounds.
Page 57
LLT9A*RDA002A 5 . Remove the standard frame (40601- 7500). 40601-7500 Circumference...
Use the standard pattern (41476-M002) included in the standard accessories (see 9.8 [p77]). Standard pattern 1 . Turn on the power switch of the LT-980. When initialization is complete, the indica- tor above illuminates. 2 . Activate Calibration mode. 1 ) While pressing , press A short beep sounds.
Page 59
LLT9A*RDA002A 4 . Set the pattern setting unit (40601-7000) 40601-7000 attached with the standard pattern (41476-M002) to the tracer. 41476-M002 5 . Press Calibration starts. When calibration is complete, a short beep sounds and the indicator above blinks. 6 . Remove the pattern setting unit (40601- 40601-7000 7000) attached with the standard frame (41476-M002).
Use the standard frame (40601-7500) included in the standard accessories (see 9.8 [p77]). 1 . Turn off the power switch of the LT-980. 2 . Unscrew FK2 × 3 (n = 4) to remove the Y axis cover (40601-M351) and stylus cover (40601-M108).
Page 61
The standard frame is released. 6 . Remove the standard frame (40601- 7500). 40601-7500 Circumference 7 . Turn off the power switch of the LT-980. 8 . Reassemble the Y axis cover (40601- M351) and stylus cover (40601-M108). 40601-M108 40601-M351...
1 . Copy the LETR-1 software (LETR1-Vxxxxx.exe) to the PC. It is recommended to use a PC on which Tracer Utility is confirmed to run prop- erly. 2 . Turn off the power switch of the LT-980. 3 . Remove the top cover ASSY (44801- 2000) (see 6.1...
Page 63
LLT9A*RDA002A 8 . Boot up the PC and execute the LETR-1 software (LETR1-Vxxxxx.exe). FlashWriter EX is activated. 9 . Select the connection port on the PC from the Select port menu. 10. Click the START button to start the upgrade.
Page 64
12. Click “OK” to close the message box. 13. Click “QUIT” to exit the LETR-1 software. 14. Turn off the power switch of the LT-980. 15. Disconnect the RS-232C cable from the PC and the BAR CODE connector of the LT-980.
LLT9A*RDA002A 9.2 Labels Satellite Tracer INPUT 34-4 MAEHAMA HIROISHI-CHO GAMAGORI AICHI JAPAN Satellite Tracer INPUT 34-4 MAEHAMA HIROISHI-CHO GAMAGORI AICHI JAPAN 9NNNNN SER.NO. F1,F2 T1A250V F1 F2 WARNING Risk of fire. Replace fuse as marked. 44801-M057-A1...
Page 67
LLT9A*RDA002A Destination Label Fuse Outside Japan (other than CE mark area) F1,F2 T1A250V F1 F2 Outside Japan (CE mark area) WARNING Risk of fire. Replace fuse as marked. 44801-M057-A1 China...
Page 68
LLT9A*RDA002A Label Outside Japan 100 V Outside Japan 200 V China Standard specification Standard specification Standard specification VCA specification VCA specification VCA specification...
Page 71
LLT9A*RDA002A 5 . 44801-CA05 to 40601-BA01 to RS-232C 6 . 44801-CA06 to 44801-BA03 to 40601-BA01 7 . 41971-CA06 to 40601-BA01 to 44801-BA02 8 . 41971-CA07 CN01R to 44801-CA04...
LLT9A*RDA002A 9.7 Error Message List Code Error message Symptom Cause Remedy No trace data There is no trace data. Tracing is not conducted. Conduct tracing. (1) Set the frame in the Trace position was center and conduct beyond the traceable tracing again.
Page 76
LLT9A*RDA002A Code Error message Symptom Cause Remedy Error occurred in shape Frame has a sharp Set the frame in the center Shape calculation error calculation. change in its shape. and conduct tracing again. Set a proper jig and Improper jig was used for Improper jig was used for Calibration jig error conduct full calibration...
LLT9A*RDA002A 9.8 Jigs Part No. Name Appearance Purpose 40601-7500 Standard frame 8.2.1 Full c a l i b r a t i o n (p52) 8.2.2 Standard frame c a l i b r a t i o n (p56) 41476-M002 Standard pat- 8.2.1...
LLT9A*RDA002A 9.9 Adjustment List 9.9.1 Adjustments after replacing ASSYs, boards, and electrical/ mechanical parts Replacement part ○ 8.1.1 Connecting and activating Tracer Utility (p45) ○ 8.1.2 Checking the error contents (p47) 8.1.3 Checking the parameter data (p49) ○ 8.1.3 Checking the parameter data (p49) ○...
3 4 5 Frame Circ. Offset Normal VCA DBL Value Actual Le 1000 Machine Mode LT-980 LT-1200 Single Trace data Type Double 40601-BA01 Switch settings Item Position Note ON ...
Page 80
LLT9A*RDA002A This page is intentionally left blank.
Page 82
NIDEK CO., LTD. : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan (Manufacturer) Telephone: +81-533-67-6611 Facsimile: +81-533-67-6610 NIDEK CO., LTD : 3F Sumitomo Fudosan Hongo Bldg., 3-22-5, Hongo, (Tokyo Office) Bunkyo-Ku, Tokyo 113-0033, Japan Telephone: +81-3-5844-2641 Facsimile: +81-3-5844-2642 NIDEK INCORPORATED : 47651 Westinghouse Drive, Fremont, California 94539, U. S. A. (United States Agent) Telephone: +1-510-226-5700 Facsimile: +1-510-226-5750...
Need help?
Do you have a question about the LT-980 and is the answer not in the manual?
Questions and answers