Nidek GYC-1000 Service manual

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NIDEK

GREEN LASER PHOTOCOAGULATOR

Model GYC-1000

SERVICE MANUAL

January 22, 2004

Pages in total: 68

XGYC4*RDA001A/E

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Table of Contents

1 INTRODUCTION ......................................................................................................... 1-1

2 SAFETY ......................................................................................................................... 2-1

2.1General precautions ..................................................................................................... 2-1

2.2 Cautions in maintenance ..............................................................................................2-1

2.3 Cautions in adjustment ................................................................................................ 2-2

3 TROUBLESHOOTING ............................................................................................... 3-1

4 SUB-TROUBLESHOOTING ...................................................................................... 4-1

4.1The LINE indicator does not light up. ...........................................................................4-1

4.2 The fan does not work. ...............................................................................................4-1

4.3 INTERLOCK 6.3 appears......................................................................................... 4-2

4.4 Error 1 appears. .........................................................................................................4-2

4.5 Error 3 appears. .........................................................................................................4-3

4.6 Error 13 appears. .......................................................................................................4-3

4.7 Error 20 appears. .......................................................................................................4-4

4.8 Error 21 appears. .......................................................................................................4-4

4.9 Error 54 appears. .......................................................................................................4-5

4.10 Any error in the 90s appears. .................................................................................... 4-5

4.11 INTERLOCK 4.7 appears. ......................................................................................4-6

4.12 The coagulation power cannot be changed. ............................................................... 4-6

4.13 The coagulation time cannot be changed. ...................................................................4-7

4.14 The brightness of the aiming beam cannot be changed. ...............................................4-7

4.15 The aiming beam is invisible. ..................................................................................... 4-7

4.16 The interval time cannot be changed. ......................................................................... 4-7

4.17 The READY indicator does not light up. ....................................................................4-7

4.18 The counter cannot be reset. .....................................................................................4-7

4.19 Error 2 appears. .......................................................................................................4-8

4.20 Error 53 appears. ..................................................................................................... 4-9

4.21 Error 55 appears. ..................................................................................................... 4-9

4.22 INTERLOCK 2.7 appears....................................................................................... 4-9

4.23 Error 10 appears. ................................................................................................... 4-10

4.24 Error 15 appears. ................................................................................................... 4-10

4.25 The power output is out of the specified range. ........................................................ 4-11

4.26 When the spot size is set to 50µm, the power output is out of the specified range. ..... 4-11

4.27 The emergency stop switch cannot be activated. ......................................................4-12

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5 REMOVING COVERS................................................................................................ 5-1

5.1 Removing covers ........................................................................................................ 5-1

6 REPLACEMENT ......................................................................................................... 6-1

6.1 Replacing the switching power supply ......................................................................... 6-1

6.2 Replacing the fan ........................................................................................................ 6-1

6.3 Replacing the COAG shutter ...................................................................................... 6-2

6.4 Replacing the COAG SHUTTER ASSY..................................................................... 6-3

6.5 Replacing the AIMING shutter ................................................................................... 6-3

6.6 Replacing the AIMING SHUTTER ASSY.................................................................. 6-4

6.7 Replacing the TRANSISTOR .....................................................................................6-4

6.8 Replacing the FIBER SW ........................................................................................... 6-4

6.9 Replacing the CPU ..................................................................................................... 6-5

6.10 Repairing and replacing the CB ASSY ...................................................................... 6-5

6.11 Replacing the LD ASSY ........................................................................................... 6-6

6.12 Replacing the DELIVERY BOARD .......................................................................... 6-6

6.13 Replacing the monitor ASSY .................................................................................... 6-7

6.14 Replacing the EMERGENCY switch ........................................................................ 6-7

6.15 Replacing the MASTER BOARD .............................................................................6-8

6.16 Replacing the LASER HEAD ................................................................................... 6-9

7 ADJUSTMENT ............................................................................................................ 7-1

7.1 Setting parameters ...................................................................................................... 7-1

7.2 Adjustment of the MASTER BOARD ........................................................................ 7-1

7.2.1 Initial setting of the MASTER BOARD ..............................................................7-1

7.2.2 Adjustment for Peltier device ............................................................................. 7-2

7.2.3 Current adjustment of the limiter ........................................................................ 7-4

7.3 Connection check of the laser head ............................................................................. 7-5

7.4 Operation check of the shutter .................................................................................... 7-6

7.4.1 Operation check of the COAG SHUTTER ASSY .............................................7-6

7.4.2 Operation check of the AIMING SHUTTER ASSY .......................................... 7-6

7.5 Optical adjustment ......................................................................................................7-7

7.5.1 Optical axis adjustment of green laser ................................................................ 7-7

7.5.2 Optical axis adjustment of aiming beam .............................................................. 7-8

7.5.2.1 Near point confocal adjustment ............................................................. 7-8

7.5.2.2 Far point confocal adjustment ................................................................ 7-8

7.5.3 1W and 1V adjustment ..................................................................................... 7-9

7.5.4 Condenser adjustment ....................................................................................... 7-9

7.5.5 Laser alignment for the fiber optic cable ........................................................... 7-10

7.6 Total adjustment ....................................................................................................... 7-11

7.6.1 Adjustment of the light control.......................................................................... 7-11

7.6.2 Power adjustment of the aiming beam .............................................................. 7-12

7.6.3 Adjustment for overpower ...............................................................................7-13

7.6.3.1 Adjustment at 1000mW ...................................................................... 7-13

7.6.3.2 Adjustment at 50mW .......................................................................... 7-14

7.6.4 Check of overpower ....................................................................................... 7-15

7.6.5 Adjustment of the COAG TIME and REPEAT TIME ...................................... 7-16

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8 REFERENCES ............................................................................................................. 8-1

8.1 Wiring diagram ........................................................................................................... 8-1

8.2 Connectors and cables ............................................................................................... 8-2

8.3 Configuration ............................................................................................................ 8-10

8.4 Labels ...................................................................................................................... 8-11

8.5 List of replacement parts ...........................................................................................8-14

8.6 Tools ........................................................................................................................8-14

8.7 DIP switches ............................................................................................................ 8-15

8.8 Error code table ....................................................................................................... 8-15

8.9 INTERLOCK code table .........................................................................................8-16

8.10 Other messages ......................................................................................................8-16

8.11 Special key operations ............................................................................................8-16

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INTRODUCTION

This service manual contains service instructions for the NIDEK GREEN LASER PHOTOCOAGULATOR, GYC-1000.

For correct service, thorough understanding of the contents of this manual is required prior to the service.

Use this manual together with the GYC-1000 Operator’s Manual and Parts List.

The specifications and design of this instrument are subject to change without notice for improvement. In the case of major changes, refer to the corresponding TECHNICAL BULLETIN issued in each occasion.

If the instrument cannot be repaired by repair operations in accordance with this Service Manual, please inform NIDEK of the Serial Number of the instrument, and details of the symptom.

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2.1 General precautions

SAFETY

• Only NIDEK service persons and persons trained by NIDEK for the GYC-1000 service work are allowed to repair the instrument.

• Observe the procedures to perform the repair work. If not, accidents or failure of the instrument may result.

• When performing the maintenance work, turn OFF the power switch, and disconnect the power cord from the wall outlet unless the power needs to be ON.

2.2 Cautions in maintenance

• Take action against static electricity before service work.

• In case of instrument malfunction, turn OFF the power switch after checking the symptom.

• Never drop parts or screws inside the instrument, nor bump it against surrounding objects.

• Prepare storage cases so as not to lose the removed screws or parts.

• Screw or unscrew the screws with proper tools.

• After loosening the screws fixed by a thread-locking adhesive, be sure to reapply the threadlocking adhesive to the screws when you retighten them.

• After replacing parts, make sure that they are fixed securely before turning ON the power.

• If you observe strange odors or smoke being issued from the instrument, immediately turn OFF the instrument, disconnect the power cord from the outlet, and diagnose the cause. If the instrument is powered in abnormal conditions, fire, electric shock or total loss of the instrument may result.

• Refer to “8.1 Wiring diagram” and “8.2 Connectors and cables,” for checking cable breaks as described in “§4 SUB-TROUBLESHOOTING”. In addition, check cables for the following:

Connectors are connected and crimped securely.

No contact failure occurs after re-connection of connectors.

Cables are soldered properly.

• Do not pull the cables strongly. Cable breaks etc. may result.

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2 - 2

• Never perform continuous emission for more than 10 seconds because this puts an enormous load on the power supply.

• Never emit the laser beam onto reflective objects such as a metal surface.

• Wear the safety goggles for the GYC-1000.

• Never emit the laser beam (direct light) to a human body or any object.

2.3 Cautions in adjustment

• Perform adjustment on a vibration-free, stable and level surface. A slanted floor or place subject to vibration will obstruct accurate adjustment.

• Do not use a calibration jig for usage other than described in this manual.

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TROUBLESHOOTING

Turn ON the master switch.

Does the LINE indicator light up?

Yes

Does the LASER EMISSION indicator light up by turning ON the key switch and does the system start a countdown for 10 seconds?

Yes

Does the fan work?

Yes

After the countdown, do the POWER and TIME displays indicate the setting values?

Yes

Can the coagulation power output be set properly?

Yes

4.1 The LINE indicator lights up.

4.3 INTERLOCK 6.3 appears.

4.2 The fan does not work.

4.4 Error 1 appears.

4.5 Error 3 appears.

4.6 Error 13 appears.

4.7 Error 20 appears.

4.8 Error 21 appears.

4.9 Error 54 appears.

4.10 Any error in the 90s appears.

4.11 INTERLOCK 4.7 appears.

4.12 The coagulation power cannot be changed.

Can the coagulation time be set properly?

Yes

Can the brightness of the aiming beam changed by pressing the AIMING switch?

Yes

Does the indication on the INTERVAL display light up by pressing the INTERVAL switch?

Yes

4.13 The coagulation time cannot be changed.

4.14 The brightness of the aiming beam cannot be changed.

4.15 The aiming beam is invisible.

4.16 The interval time cannot be set.

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3 - 2

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Does the READY indicator light up by pressing the STATUS switch?

Yes

Is the indication on the COUNTER display reset to “0” by pressing the RESET switch?

Yes

Is the laser emitted by depressing the foot switch?

Yes

Is the measured power output within the specifications for the set values?

Yes

Do the laser emission stop, the indications of the control box light off, and the fan stop by pressing the emergency stop switch?

Yes

4.17 The READY indicator does not light up.

4.18 Counter cannot be reset.

4.19 Error 2 appears.

4.20 Error 53 appears.

4.21 Error 55 appears.

4.22 INTERLOCK 2.7 appears.

4.23 Error 10 appears.

4.24 Error 15 appears.

4.25 The power output is out of the specified range.

4.26 When the spot size is set to 50μm, the power output is out of the specified range.

4.27 The emergency stop switch cannot be activated.

Turn ON the key switch. After the countdown for 10 seconds, turn OFF the key switch.

Turn OFF the master switch.

Completion of operation

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4.1 The LINE indicator does not light up.

SUB-TROUBLESHOOTING

Is the fuse in the fuse carrier blown?

Is the voltage between the 1st and 3rd pins of P125 on the MASTER BOARD + 12 VDC?

Yes

Is the voltage between the 24th and 20th pins of J108 on the MASTER BOARD approximately + 4.0 VDC?

Yes

Does the cable between the 20th and 24th pins of the CB CABLE ASSY have a break?

Replace the DISPLAY BOARD. (See “6.15”.)

Yes

4.2 The fan does not work.

Replace the fuse with a new one. (Refer to the Operator’s Manual.)

Replace the switching power supply. (See “6.1”.)

Replace the MASTER board. (See “6.15”.)

Repair the faulty point.

* The fan does not work when the temperature is lower than the specified one (25 degrees C).

Does the LINE indicator of the control box light up?

Yes

Is the voltage between the 1st and 2nd pins of J112 on the MASTER BOARD + 12 VDC?

Yes

Replace the FAN ASSY. (See “6.2”.)

Check the articles described in “4.1 The LINE indicator does not light up.” (See “4.1”.)

Replace the MASTER BOARD. (See “6.15”.)

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4 - 2

4.3 INTERLOCK 6.3 appears.

Is the REMOTE connector connected?

Yes

Is electricity applied between the 3rd and 4th pins of the REMOTE connector?

Yes

Replace the MASTER BOARD. (See “6.15”.)

4.4 Error 1 appears.

Does the COAG SHUTTER ASSY (EA04) have a break?

Is the COAG SHUTTER ASSY positioned at the detectable area of the sensor?

Yes

Is the voltage between the 3rd and 7th, 4th and 7th pins of P106 (J106) on the MASTER BOARD approximately + 1.3 DVC?

Yes

Connect the REMOTE connector.

Repair the faulty point between the 3rd and 4th pins of the REMOTE connector, or replace the REMOTE connector.

Repair or replace the COAG SHUTTER ASSY (EA04). (See “6.4”.)

Perform the position adjustment of the COAG SHUTTER ASSY.

Replace the COAG SHUTTER ASSY (EA04). (See “6.4”.)

Is the voltage of P106 (J106) on the MASTER BOARD as follows when the COAG shutter is closed? TP17: 5 V TP18: 0 V

Yes

Is the voltage of P106 (J106) on the MASTER BOARD as follows when the COAG shutter is open? TP17: 0 V TP18: 5 V

Yes

Replace the MASTER BOARD.

Repair or replace the COAG SHUTTER ASSY (EA04). (See “6.4”.)

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4.5 Error 3 appears.

4 - 3

Does the AIMING SHUTTER ASSY (EA03) have a break?

Is the AIMING SHUTTER ASSY positioned at the detectable area of the sensor?

Yes

Is the voltage between the 3rd and 5th, 6th and 5th pins of P107 (J107) on the MASTER BOARD approximately + 1.3 DVC?

Yes

Is the voltage of P107 (J107) on the MASTER BOARD as follows when the aiming beam is OFF? 4th - 5th pins: 5 V 7th - 5th pins: 0 V

Yes

Is the voltage of P107 (J107) on the MASTER BOARD as follows when the aiming beam is ON? 4th - 5th pins: 0 V 7th - 5th pins: 5 V

Yes

Repair or replace the AIMING SHUTTER ASSY (EA03). (See 6.6.)

Perform the position adjustment of the AIMING SHUTTER ASSY.

Replace the AIMING SHUTTER ASSY (EA03). (See 6.4.)

Repair or replace the AIMING SHUTTER ASSY (EA03). (See 6.6.)

Yes

Replace the MASTER BOARD.

4.6 Error 13 appears.

Disconnect P113 (J113) on the MASTER BOARD. Is the circuit between the 1st and 3rd pins of P113 on the TRANSISTOR ASSY short-circuited?

Disconnect P114 (J114) on the MASTER BOARD. Is the circuit between the 1st and 3rd pins of P114 on the TRANSISTOR ASSY short-circuited?

Replace the MASTER BOARD. (See 6.15.)

Yes

Replace the TRANSISTOR ASSY. (See 6.7.)

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4 - 4

4.7 Error 20 appears.

Does the LH CABLE ASSY have a break?

Disconnect P123 (J123) on the MASTER BOARD. Is the resistance between the 1st and 2nd pins of P123 of the LH CABLE ASSY 6 - 12 KΩ?

Yes

Replace the MASTER BOARD. (See 6.15.)

Is the symptom improved?

Yes

Completion of operation

4.8 Error 21 appears.

Yes

Repair or replace the LH CABLE ASSY.

Replace the laser head. (See 6.16.)

Does the LH CABLE ASSY have a break?

Disconnect P123 (J123) on the MASTER BOARD. Is the resistance between the 3rd and 2nd pins of P123 of the LH CABLE ASSY 8 - 12.5 KΩ?

Yes

Replace the MASTER BOARD. (See 6.15.)

Is the symptom improved?

Yes

Completion of operation

Yes

Repair or replace the LH CABLE ASSY.

Replace the laser head. (See 6.16.)

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4.9 Error 54 appears.

4 - 5

Can the FIBER SW be turned ON when the fiber optic cable plug is connected?

Yes

Is electricity applied between the 2nd and 3rd, 5th and 6th pins of P105 when the micro switch of the FIBER SW ASSY (EA01) is turned ON?

Yes

Disconnect P105 (J105) on the MASTER BOARD. Is the voltage of J105 as follows? 2nd - 3rd pins: 5 V 5th - 6th pins: 5 V

Yes

Completion of operation

Perform the position adjustment of the FIBER SW.

Replace the MASTER BOARD. (See 6.15.)

4.10 Any error in the 90s appears.

Replace the FIBER SW ASSY (EA01). (See 6.8.)

Replace the MAIN CPU (17164-E150) and SUB CPU (17164-E160). (See 6.9.)

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4 - 6

4.11 INTERLOCK 4.7 appears.

Does the fan work?

Yes

Does any object block the air vent of the instrument?

Yes

Is the temperature of the room within the specified range (10 - 30℃) for usage?

Yes

Leave the instrument for 30 minutes or longer for natural cooling.

Can the instrument be used without INTERLOCK 4.7 when restarting the instrument?

Yes

The instrument is normal. Although INT4.7 appeared because the temperature of the instrument temporarily rose. The temperature of the instrument has lowered now and the instrument can be used.

Check the articles described in “4.2 The fan does not work.” (See “4.2”.)

Move the object which blocks the air vent, or move the instrument.

Make the temperature of the room the same as the specified.

Replace the MASTER BOARD. (See 6.15.)

4.12 The coagulation power cannot be changed.

Turn OFF the key switch. After the indications of the control box go off, turn ON the key switch again.

Is the voltage between the 16th and 18th, 17th and 19th pins of P108 (J108) of the MASTER BOARD 5 V?

Yes

Does the CB CABLE ASSY (EA13) have a faulty soldering or break?

Replace the MASTER BOARD. (See 6.15.)

Yes

Replace the MASTER BOARD. (See 6.15.)

Repair or replace the CB CABLE ASSY. (See 6.10.)

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4 - 7

4.13 The coagulation time cannot be changed.

Check and perform the articles described in 4.12.

4.14 The brightness of the aiming beam cannot be changed.

Check and perform the articles described in 4.12.

4.15 The aiming beam is invisible.

Does the aiming shutter block the optical path?

Is the voltage between the TP12 and GND on the MASTER BOARD 1.2 V, and is the aiming beam emitted from the AIMING LD ASSY (EA02)?

Yes

Can the aiming beam be seen by turning VR1 on the MASTER BOARD clockwise?

Yes

Adjust the power output of the aiming beam. (See 7.6.2.)

Yes

Adjust the operation of the AIMING SHUTTER ASSY.

Replace the AIMING LD ASSY. (See 6.11.)

Replace the MASTER BOARD. (See 6.15.)

4.16 The interval time cannot be changed.

Check and perform the articles described in 4.12.

4.17 The READY indicator does not light up.

Check and perform the articles described in 4.12.

4.18 The counter cannot be reset.

Check and perform the articles described in 4.12.

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4 - 8

4.19 Error 2 appears.

Is the connector of the delivery unit connected to P702 (J702) on the DELIVERY BOARD (17621-E4965)?

Yes

Does the delivery setting of the main body coincide with the connected delivery unit?

Yes

Does the DELIVERY BOARD ASSY (EA08) have a break?

Is the voltage of P104 (J104) on the MASTER BOARD as follows? 11th - 12th pins: About + 15 V

Yes

Is the voltage of TP on the MASTER BOARD as follows? TP14: 0 V TP15: 5 V

Yes

Connect the connector of the delivery unit to P702 (J702) on the DELIVERY BOARD.

Select the proper delivery setting of the main body.

Repair or replace the DELIVERY BOARD ASSY (EA08). (See 6.12.)

Replace the MASTER BOARD. (See 6.15.)

The delivery unit malfunctions. (Refer to the Service Manual of the delivery unit.)

Is the voltage of TP on the MASTER BOARD as follows when the filter is open? TP14: 5 V TP15: 0 V

Yes

Replace the MASTER BOARD. (See 6.15.)

The delivery unit malfunctions. (Refer to the Service Manual of the delivery unit.)

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4.20 Error 53 appears.

4 - 9

Does the FOOT SW ASSY (EA11) have a break?

Does Err.53 occur when depressing the foot switch slowly?

Is electricity applied between the 1st and 4th, 3rd and 4th pins of P101 (J101) on the MASTER BOARD when the foot switch is depressed?

Yes

Replace the MASTER BOARD. (See 6.15.)

Yes

4.21 Error 55 appears.

Check and perform the articles described in 4.19.

Repair or replace the FOOT SW ASSY (EA11).

Adjust the switch in the foot switch.

Replace the foot switch (10149-0000).

4.22 INTERLOCK 2.7 appears.

Does the 1st MONITOR of the POWER MONITOR ASSY (EA05) have a break?

Measure the actual power output at the aperture of the delivery unit. Is the measured power output within the specified range? [Specified power] 90 mW or less: ±20% 100 mW or more: ±15%

Perform the adjustment for the overpower. (See 7.6.3.)

Is the symptom improved? Completion of operation

Replace the MASTER BOARD. (See 6.15.)

Yes

Repair or replace the POWER MONITOR ASSY (EA05).

Adjust the power output at the aperture of the delivery unit until it becomes within the specified range. (See 7.6.1.)

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4 - 10

4.23 Error 10 appears.

Does the LD CABLE ASSY (EA19) have a break?

Does the POWER MONITOR ASSY (EA05) have a break?

Replace the laser head. (See 6.16.)

4.24 Error 15 appears.

Does the 2nd MONITOR of the POWER MONITOR ASSY (EA05) have a break?

Measure the power output at the aperture of the delivery unit. Is the actual power output within the specified range? [Specified power] 90 mW or less: ±20% 100 mW or more: ±15%

Yes

Repair or replace the LD CABLE ASSY (EA19). (See 6.13.)

Repair or replace the POWER MONITOR ASSY (EA05). (See 6.13.)

Replace the POWER MONITOR ASSY. (See 6.13.)

Perform the adjustment for overpower. (See 7.6.3.)

Adjust the power output at the aperture of the delivery unit until it becomes within the specified range. (See 7.6.1.)

Measure the power output at the aperture of the delivery unit. Is the power output adjusted so that it becomes within the specified range?

Yes

Perform the adjustment for overpower. (See 7.6.3.)

Is the symptom improved?

Replace the MASTER BOARD. (See 6.15.)

Yes

Replace the laser head. (See 6.16.)

Completion of operation

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4.25 The power output is out of the specified range.

4 - 11

Is the laser alignment for the fiber optic cable proper?

Does the burn pattern have any unburnt area?

Is the transparency of the fiber optic cable 90% or more?

Yes

Adjust the coagulation power output. (See 7.6.1.)

Is the power output too high?

Is the power output too low?

Yes

Perform the laser alignment for the fiber optic cable properly. (See 7.5.5.)

Replace the fiber optic cable or laser head. (See 6.16.)

Replace the fiber optic cable.

Replace the MASTER BOARD. (See 6.15.)

Replace the laser head. (See 6.16.)

Completion of operation

4.26 When the spot size is set to 50µm, the power output is

out of the specified range.

Adjust the power output when the spot size is set to 50µm. (See 7.6.1.)

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4 - 12

4.27 The emergency stop switch cannot be activated.

Is electricity between the 3rd and 4th, 5th and 6th pins of P301 of the EMERGENCY SW ASSY (EA21) as follows? EMERGENCY SW is ON: Not applied EMERGENCY SW is OFF: Applied

Yes

Repair or replace the EMERGENCY SW ASSY (EA21). (See 6.14.)

Does the CB CABLE ASSY (EA13) have faulty soldering?

Replace the MASTER BOARD. (See 6.15.)

Yes

Repair or replace the CB CABLE ASSY. (See 6.10.)

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5.1 Removing covers

* Take action against static electricity before starting work.

1. Take out the CB (17164-2000).

2. Remove the pin (17164-M314).

3. Unscrew PC3×3 (n=2) and remove the front cover (17164-M304).

REMOVING COVERS

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4. Unscrew PC3×4 (n=2) and remove the cover (17164-M302).

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6.1 Replacing the switching power supply

Replacement parts: 17164-E010 * Take action against static electricity before starting work.

REPLACEMENT

1. Remove the covers. (See 5.1.)

2. Disconnect all the connectors connected to the MASTER BOARD (17164-BA01).

3. Unscrew PC3.5×8 (n=4) and remove the MASTER BOARD (17164-BA01) together with the switching power supply (17164-

E010).

4. Unscrew PC3×4 (n=4) and remove the

MASTER BOARD (17164-BA01) together

with the power supply cover (17164-M325)

from the switching power supply (17164E010).

5. Reassemble the part in reverse order.

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6.2 Replacing the fan

Replacement parts: 17164-EA06 * Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Remove the switching power supply. (See

6.1.)

3. Unscrew PC3×12 (n=4) and N3 (n=4) and remove the fan (17164-EA06) and wire netting (17164-M311).

4. Reassemble the parts in reverse order.

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6 - 2

6.3 Replacing the COAG shutter

Replacement parts: 17164-1310 * Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Disconnect P105 (J105), P106 (J106), P107 (J107), P115 (J115), P118 (J118), P119 (J119), P116 (J116), P121 (J121), P122 (J122) and P123 (J123) on the MASTER BOARD.

3. Unscrew TC5×10 (n=4) and remove the laser ASSY (17164-1000).

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4. Unscrew FC4×6 (n=2) and remove the COAG shutter (17164-1310).

5. Reassemble the parts in reverse order.

6. Adjust the operation of the COAG SHUTTER ASSY. (See 7.4.1.)

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6.4 Replacing the COAG SHUTTER ASSY

Replacement parts: 17164-EA04 * Take action against static electricity before starting work.

6 - 3

1. Remove the COAG shutter. (See 6.3.)

2. Unscrew CK2×4 (n=2) and remove the

COAG SHUTTER ASSY (17164-EA04) together with the sensor plate (17164-E033).

3. Unscrew CK2×4 (n=2) and remove the

SENSOR BOARD (17162-BA10).

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4. Unscrew the screws (17164-M038, n=3) and

remove the shutter plate A (17164-M31).

5. Unscrew the screws (17164-M038, n=2) and

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remove the COAG SHUTTER ASSY (17164EA04).

6. Reassemble the parts in reverse order.

7. Adjust the operation of the COAG

SHUTTER ASSY. (See 7.4.1.)

6.5 Replacing the AIMING shutter

Replacement parts: 17164-1320 * Take action against static electricity before starting work.

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1. Remove the covers. (See 5.1.)

2. Disconnect P105 (J105), P106 (J106), P107

(J107), P115 (J115), P118 (J118), P119 (J119), P116 (J116), P121 (J121), P122 (J122) and P123 (J123) on the MASTER BOARD (17164-BA01). (See 6.4.)

3. Unscrew TC5×10 (n=4) and remove the laser

ASSY (17164-1000). (See 6.3.)

4. Unscrew FC4×6 (n=2) and remove the

AIMING shutter (17164-1320). (See 6.3.)

5. Reassemble the parts in reverse order.

6. Adjust the operation of the AIMING

SHUTTER ASSY. (See 7.4.2.)

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6 - 4

6.6 Replacing the AIMING SHUTTER ASSY

Replacement parts: 17164-EA03 * Take action against static electricity before starting work.

1. Remove the AIMING shutter. (See 6.5.)

2. Unscrew CK2×4 (n=2) and remove the AIMING SHUTTER ASSY (17164-EA03) together with the sensor plate (17164-M033).

3. Unscrew CK2×4 (n=2) and remove the SENSOR BOARD (17162-BA10).

4. Unscrew the screw (17164-M038, n=3) and remove the shutter plate B (17164-M41).

5. Unscrew the screws (17164-M038, n=3) and remove the AIMING SHUTTER ASSY (17164-EA03).

6. Reassemble the parts in reverse order.

7. Adjust the operation of the AIMING SHUTTER ASSY. (See 7.4.2.)

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6.7 Replacing the TRANSISTOR

Replacement parts: 17164-EA14 * Take action against static electricity before starting work.

1. Remove the laser ASSY (17164-1000). (See

5.1.)

2. Disconnect P113 (J113) and P114 (J114) on the MASTER BOARD (17164-BA01).

3. Unscrew PC3×10 (n=2), and remove N3 (n=2) and TRANSISTOR (17164-EA14).

4. Reassemble the parts in reverse order.

6.8 Replacing the FIBER SW

Replacement parts: 17164-EA01 * Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Disconnect P105 (J105) on the MASTER BOARD (17164-BA01).

3. Unscrew CK1.4×4 (n=2) and remove the FIBER SW (17164-EA01)

4. Reassemble the parts in reverse order.

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Page 31

6.9 Replacing the CPU

6 - 5

Replacement parts: 17164-E150 (MAIN CPU)

17164-E160 (SUB CPU)

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* Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Unscrew PC3×4 (n=3) and remove the tray

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(17164-M313).

3. Detach the MAIN CPU (17164-E150) and

SUB CPU (17164-E160).

4. Reassemble the parts in reverse order.

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6.10 Repairing and replacing the CB ASSY

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Replacement parts: 17164-2000 * Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Unscrew PC4×5 and remove the nylon clamp

(80432-20034).

3. Disconnect P108 on the MASTER BOARD

(17164-BA01) and remove the CB ASSY (17164-2000). (See 6.15.)

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4. Unscrew PT3×10 (n=4) and remove the rear

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5. Unscrew PC3×6 (n=4) and remove the base

(17164-M205, n=4).

6. Disconnect P301 (J301) on the DISPLAY

BOARD (17164-BA03) and remove the CB CABLE ASSY (17164-EA13).

7. Repair the faulty soldering and break of the

CB CABLE ASSY (17164-EA13).

8. Reassemble the parts in reverse order.

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6 - 6

6.11 Replacing the LD ASSY

Replacement parts: 17164-1600 * Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Remove the laser ASSY (17164-1000). (See

6.3.)

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3. Disconnect P115 (J115) on the MASTER BOARD (17164-BA01).

4. Unscrew SB3×8, and remove SW3, PW3 (n=2) and the LD ASSY (17164-1600).

5. Reassemble the parts in reverse order.

6. Perform the optical axis adjustment of the aiming beam.

7. Perform the near-point confocal adjustment. (See 7.5.2.1.)

8. Perform the far-point confocal adjustment. (See 7.5.2.2.)

6.12 Replacing the DELIVERY BOARD

Replacement parts: 17164-EA08 * Take action against static electricity before starting work.

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1. Remove the covers. (See 5.1.)

2. Remove the laser ASSY (17164-1000). (See

6.3.)

3. Disconnect P104 (J104) and P126 (J126) on the MASTER BOARD (17164-BA01).

4. Unscrew FK2×6 (n=2) and remove the DELIVERY BOARD (17164-EA08).

5. Reassemble the parts in reverse order.

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Page 33

6.13 Replacing the monitor ASSY

Replacement parts: 17164-1200 * Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Disconnect P118 (J118) and P119 (J119) on

the MASTER BOARD (17164-BA01).

3. Unscrew SB2×8 (n=2) and remove the

monitor ASSY (17164-1200).

4. Reassemble the parts in reverse order.

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6.14 Replacing the EMERGENCY switch

Replacement parts: 17164-EA21

1. Unscrew PT3×10 (n=4) and remove the rear

cover (17164-M020).

2. Disconnect P301 (J301) on the DISPLAY

BOARD (17164-BA03) and remove the EMERGENCY SW (17164-EA21).

3. Reassemble the parts in reverse order.

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Page 34

6 - 8

6.15 Replacing the MASTER BOARD

* After replacing the MASTER BOARD (17164-BA01), it should be adjusted by using a

dummy laser. If a dummy laser for adjustment is not available, return the instrument to NIDEK for service.

Replacement parts: 17164-BA01 * Take action against static electricity before starting work.

1. Remove the covers. (See 5.1.)

2. Unscrew PC3×6 (n=3) and remove the tray (17164-M313).

3. Disconnect all the connectors on the MASTER BOARD (17164-BA01).

4. Detach the MAIN CPU (17164-E150) and SUB CPU (17164-E160).

5. Remove the spacers (17164-M330, n=4) and unscrew PC3×5 (n=2). Then, remove the MASTER BOARD (17164-BA01).

6. Unscrew CK2.6×6 (n=2), and remove PW2.6 (n=2) and the cover (17164-M307).

7. Reassemble the parts in reverse order.

8. Perform the adjustment of the MASTER BOARD. (See 7.2.)

9. Check the connection of the laser head. (See

7.3.)

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Page 35

6.16 Replacing the LASER HEAD

* After replacing the LASER HEAD (17164-G001), it should be adjusted by using a dummy

laser. If a dummy laser for adjustment is not available, return the instrument to NIDEK for service.

Replacement parts: 17164-G001 * Take action against static electricity before starting work.

6 - 9

1. Remove the covers. (See 5.1.)

2. Remove the laser ASSY (17164-1000). (See

6.3.)

3. Disconnect cables LH CABLE (17164-EA18),

LD CABLE (17164-EA19) and LD TEC (17164-EA20) from the LASER HEAD (17164-G001).

4. Unscrew the screw (17164-M008) and remove

the LASER HEAD (17164-G001).

5. Reassemble the parts in reverse order.

6. Perform the adjustment of the MASTER

BOARD. (See 7.2.)

7. Check the connection of the LASER HEAD .

(See 7.3.)

8. Perform the optical adjustment. (See 7.5.)

9. Perform the total adjustment. (See 7.6.)

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Page 36

This page is intentionally vacant.

Page 37

7.1 Setting parameters

ADJUSTMENT

1. Set DIP SW No. 6 of the CB (17164-BA03) to the OFF position.

2. Select the address (indicated on the TIME display) with and of the TIME

switches.

3. Select the parameter (indicated on the POWER display) with and of the POWER

switches.

4. Determine the parameter by pressing the RESET switch.

5. Set DIP SW No. 6 of the CB (17164-BA03) to the ON position.

7.2 Adjustment of the MASTER BOARD

7.2.1 Initial setting of the MASTER BOARD

* After performing the initial setting of the MASTER BOARD (17164-BA01), the MASTER

BOARD should be adjusted by using a dummy laser. If the dummy laser for adjustment is not available, return the instrument to NIDEK for service.

1. Set the volumes on the MASTER BOARD (17164-BA01) as below.

VR1 : Turn it 10 or more revolutions counterclockwise. VR2, VR3 : Turn them counterclockwise and stop them where they click. VR6, VR8 : Turn them clockwise and stop them where they click.

2. Connect J108 (CB CABLE ASSY: 17164-EA13), J124 (KEY SW ASSY: 171647-EA12)

and J125 (+12V PS ASSY: 17164-EA15) on the MASTER BOARD.

* Make sure that the other connectors are not connected to the MASTER BOARD (17164-

BA01).

3. Set DIP SW 1, 2, 4 and 6 on the CB (17164-BA03) to the OFF position.

* Make sure that the other switches are set to the ON position.

4. Connect the power plug and check the voltages of the following connectors on the MASTER

BOARD (17164-BA01).

1st - 3rd pins of J125: +12V 2nd - 4th pins of J125: +12V * Be sure to connect the multimeter when the power is OFF.

5. Make sure that the power is OFF and connect the multimeter as below. Turn ON the

master and the key switch, and check the voltages of the following connectors on the MASTER BOARD (17164-BA01).

TP1 - GND : +5V 1st - 3rd pins of P117 : 0V 6th pin of J110 - GND : -5V * The multimeter can be connected when the key switch is ON.

6. Set the value of address 199 to “99” or more in the parameter mode. (See 7.1.)

Page 38

7 - 2

7.2.2 Adjustment for Peltier device

1. Set DIP SW 1, 2, 4 and 6 on the CB (17164-BA03) to the OFF position.

2. Set the LD temperature, SHG temperature and current of the limiter to the values that are described in the Laser Shipping Record by the following parameters. (See 7.1.)

LD temperature : Address 65 SHG temperature : Address 66 Current of limiter : Address 92 * Input the value obtained by the arithmetic of “Temperature (degree C) × 10” for the LD and

SHG temperature.

* Current of limiter = (Current at 2.5W + 4A) × 10

3. Turn OFF the master and key switches, and connect the following connectors of the MASTER BOARD (17164-BA01).

J101 (FOOT SW ASSY: 17164-EA11), J102 (INTLK CONNECTOR ASSY: 17164-EA09), J103 (INTLK CONNECTOR ASSY: 17164-EA09), J104 (DELIVERY BOARD ASSY: 171647EA08), J110 (DETECTOR BOARD ASSY: 17164-EA10), J112 (FAN ASSY: 17164-EA06), J121 (LD TEC ASSY: 17164-EA20), J123 (LH CABLE ASSY: 17164-EA18), J130 (FOOT SW ASSY: 17164-EA11)

4. Connect the following cables to the laser ASSY.

LD TEC ASSY (17164-EA20) LH CABLE ASSY (17164-EA18) * Connect cable EA18 so that connector A2 is

positioned as on the right figure.

* The cables can be connected even if the

connected direction is reverse, or the connected position shifts in the longitudinal direction. Be sure to check the connected direction and position shift.

5. Set DIP SW No. 6 of the CB to the ON position and connect the multimeter to TP23 on the MASTER BOARD (17164-BA01). Turn ON the master and key switches. Verify that the measured voltage of TP23 is ± 0.1V of the voltage converted (according to the constant table of the thermistor) from the LD temperature in the Laser Shipping Record.

* It needs about 30 seconds until the voltage becomes stable. * If the voltage is abnormal, immediately turn OFF the master switch.

6. Turn OFF the master and key switches. Connect J122 (LH CABLE ASSY: 17164-EA18) on the MASTER BOARD (17164-BA01), then connect the multimeter to TP24 on the MASTER BOARD (17164-BA01).

7. Turn ON the master and key switches. Verify that the measured voltage of TP24 is ± 0.1V of the voltage converted (according to the constant table of the thermistor) from the SHD temperature in the Laser Shipping Record.

* If the voltage is abnormal, immediately turn OFF the master switch.

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7 - 3

8. Turn OFF the master and key switches. Connect J109 (+5V ON/OFF ASSY: 17164-EA17)

and J117 (+5V PS ASSY: 17164-EA16). Then, connect the foot switch to the rear side of the GYC-1000.

9. Connect the multimeter between the 1st pin of J116 on the MASTER BOARD (17164-

BA01) and GND.

10.

Turn ON the master and key switches, and set the following after countdown.

Press the COUNTER switch to set the COUNTER to “0”. Keep pressing

AIMING switches to set the AIMING to the minimum (one line lights up), POWER to “50 mW”, and TIME to “3 sec.”

11.

Press the STATUS switch to light up the READY indication, and depress the foot switch.

Verify that the multimeter reads +5V without laser emission.

* If the voltage is abnormal, immediately turn OFF the master switch.

12.

Turn OFF the master and key switches.

13.

Set all the DIP switches of the CB (17164-BA03) to the ON position.

Constant Table of the Thermistor

Temperature (℃) Resistance (kΩ)

19.5 12.78 2.23 29 8.41 1.57 20 12.5 2.19 29.5 8.23 1.54

20.5 12.22 2.15 30 8.05 1.51 21 11.95 2.11 30.5 7.89 1.48

21.5 11.68 2.07 31 7.72 1.45 22 11.42 2.03 31.5 7.56 1.43

22.5 11.17 2 32 7.4 1.4 23 10.92 1.96 32.5 7.25 1.37

23.5 10.68 1.92 33 7.1 1.35 24 10.45 1.89 33.5 6.95 1.32

24.5 10.22 1.85 34 6.81 1.3 25 10 1.82 34.5 6.67 1.28

25.5 9.78 1.78 35 6.53 1.25 26 9.57 1.75 35.5 6.39 1.23

26.5 9.37 1.72 36 6.26 1.21 27 9.16 1.69 36.5 6.14 1.19

27.5 8.97 1.66 37 6.01 1.16 28 8.78 1.63 37.5 5.89 1.14

28.5 8.59 1.6

Voltage (V)

Temperature (℃) Resistance (kΩ)

of the

Voltage (V)

Page 40

7 - 4

7.2.3 Current adjustment of the limiter

* A dummy laser will be used in the current adjustment of the limiter. If a dummy laser is not

available, do not perform the adjustment and return the instrument to NIDEK for service.

1. Set DIP SW 1, 2 and 4 on the CB (17164-BA03) to the OFF position. Set DIP SW 3, 5 - 8 to the ON position.

2. Connect J113 (TRANSISTOR ASSY: 17164-EA14), J114 (TRANSISTOR ASSY: 17164EA14) and J116 (LD CABLE ASSY: 17164-EA19) on the MASTER BOARD (17164-BA01).

3. When using a dummy laser, it is necessary to take action against static electricity. Follow the instructions below to assemble the dummy laser.

(1) Remove the LH CABLE ASSY (17164-EA18) from the dummy laser. (2) Connect either ORL or YEL of the LD CABLE ASSY (17164-EA19) to the receptor that

has no jumper plug.

(3) Connect either WHT or RED of the LD CABLE ASSY (17164-EA19) to the receptor that

has no jumper plug.

(4) Remove the jumper plug of the LH, and connect the other cables of the LD CABLE ASSY

(17164-EA19).

(5) Connect the LH CABLE ASSY (17164-EA18) to the dummy laser.

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* Connect the LH CABLE ASSY (17164-

EA18) so that connector A2 is positioned as on the right figure.

* The cables can be connected even if the

connected direction is reverse, or connected position shifts in the longitudinal direction. Be sure to check the connected direction and position shift.

4. Turn OFF the master and key switches. Set the clamp tester to the 2 BRN cables of J117 (EA16: +5V PS ASSY) on the MASTER BOARD (17164-BA01), and connect the oscilloscope to TP6 on the MASTER BOARD (17164-BA01).

5. Turn ON the master and key switches. Check the following articles when emitting the laser at the POWER of 200 and 500.

(a)

The waveform of TP6 obtained by the oscilloscope does not have any overshooting, noise, etc. (b) When the POWER is set to “200mW,” the clamp tester reads 1 ± 0.2A. (c) When the POWER is set to “500mW,” the clamp tester reads 2.5 ± 0.2A (d)

When the POWER is set to “1000mW,” the multimeter reads 5A and the voltage of TP6 is 1V. (e) When turning ON and OFF the key switch repeatedly three times, the waveform of TP6

obtained by the oscilloscope is not abnormal (especially when turning ON the key switch).

6. Set the POWER display on the CB to “2000” and emit the laser. Verify that the clamp tester reads about 5A (limiter is activated).

* If the limiter is not activated, the clamp tester will read about 10A.

7. Set the POWER display on the CB to “4000” and emit laser. Adjust the measured value so that it coincides with the current of the limiter as below by turning VR2 on the MASTER BOARD (171464-BA01).

Current of the limiter = Current of + 4A at 2.5mW in the Laser Shipping Record

8. Turn OFF the master and key switches. (Keep the master cable connected.)

9. Set all the DIP switches on the CB to the ON position.

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7 - 5

7.3 Connection check of the laser head

1. Connect J113 (TRANSISTOR ASSY: 17164-EA14), J114 (TRANSISTOR ASSY: 17164-

EA14) and J116 (LD CABLE ASSY: 17164-EA19) on the MASTER BOARD (17164-BA01).

2. When using a dummy laser, it is necessary to take action against static electricity. Follow

the instructions below to assemble the dummy laser.

(1) Connect either ORL or YEL of the LD CABLE ASSY (17164-EA19) to the receptor that

has no jumper plug.

(2) Connect either WHT or RED of the LD CABLE ASSY (17164-EA19) to the receptor that

has no jumper plug.

(3) Remove the shorting pin of the LH, and connect the other cables of the LD CABLE ASSY

(17164-EA19).

(4) Connect the LH CABLE ASSY (17164-EA18) to the dummy laser.

* Connect the LH CABLE ASSY (17164-

EA18) so that connector A2 is positioned as on the right figure.

* The cables can be connected even if the

connected direction is reverse, or connected position shifts in the longitudinal direction. Be sure to check the connected direction and position shift.

3. Connect J118 (EA05: POWER MONITOR ASSY) and J119 (EA05: POWER MONITOR

ASSY) on the MASTER BOARD. Then, turn ON the master and key switches.

4. Measure the voltage of TP23 on the MASTER BOARD (17164-BA01) with the multimeter.

Verify that the measured voltage is ± 0.1V of the voltage converted (according to the constant table of the thermistor) from the LD temperature in the Laser Shipping Record.

5. Measure the voltage of TP24 on the MASTER BOARD (17164-BA01). Verify that the

measured voltage is ± 0.1V of the voltage converted (according to the constant table of the thermistor) from the SHD temperature in the Laser Shipping Record.

6. Connect the oscilloscope to TP6 on the MASTER BOARD (17164-BA01) and emit laser.

Verify that the waveform of TP6 obtained by the oscilloscope is not abnormal.

* Check the waveform at each POWER of “200mW” and “500mW”.

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Page 42

7 - 6

7.4 Operation check of the shutter

1. Set the shutter (COAG shutter, AIMING shutter) to “OPEN” and emit laser. If the shutter interferes with the optical axis of the green laser, remove the shutter ASSY (COAG SHUTTER ASSY: 17164-1310, AIMING SHUTTER ASSY: 17164-1320) from the laser base (17164-M001), insert PW4 (n=2) between the shutter ASSY and laser base (17164M001) and assemble the removed parts so that the shutter does not interfere with the optical axis of the green laser.

7.4.1 Operation check of the COAG SHUTTER ASSY

1. Turn OFF the master and key switches. Connect the oscilloscope to the following connectors on the MASTER BOARD (17164-BA01) and turn ON the master and key switches.

2. Check the waveform when the READY and STANDBY indications light up (opens and closes the shutter) in turn by pressing the STATUS switch on the CB. Verify that the time-lag between the CH1 and CH2 signals (shutter OPEN TIME, shutter CLOSE TIME) is 20msec or less respectively.

CH1: TP16 CH2: TP17 (Shutter CLOSE TIME) CH2: TP18 (Shutter OPEN TIME)

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7.4.2 Operation check of the AIMING SHUTTER ASSY

1. Press of the AIMING switches on the CB and verify that the aiming laser is emitted.

2. Turn OFF the master and key switches. Connect the oscilloscope to the following connectors on the MASTER BOARD (17164-BA01) and turn ON the master and key switches.

3. Check the waveform when turning ON and OFF the AIMING beam (opens and closes

the shutter) in turn by pressing and

of the AIMING switches on the CB.

Verify that the time-lag between the CH1 and CH2 signals (shutter OPEN TIME, shutter CLOSE TIME) is 20msec or less respectively.

CH1: D5 ANODE CH2: J107-4 (Shutter CLOSE TIME) CH2: J107-7 (Shutter OPEN TIME)

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Page 43

7.5 Optical adjustment

7 - 7

7.5.1 Optical axis adjustment of green laser

1. Remove the following parts of the

CONDENSER ASSY (17164-1700) according to the right figure.

(a) Mount (17164-M110) (b) Receptacle (17164-M107) (c) Plate (17164-M111) (d) Pin (17164-M115) (e) Base (17164-M105) (f) Spring (17164-M109)

2. Connect the clamp tester to the 2 BRN cables

of J117 (+5V PS ASSY: 17164-EA16) on the MASTER BOARD (17164-BA01). Set DIP SW No. 6 on the CB (17164-BA03) to the OFF position, and turn ON the master and key switches.

3. Set the power meter (COHERENT, Model

201) to the laser beam window (receptacle of the main body).

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4. Adjust the current by pressing the POWER

switch on the CB so that the clamp tester reads the same current as the one (2.5W) in the Shipping Record when emitting the laser. At the same time, verify that the power meter reads 2.3W or more.

5. Attach the near point optical axis calibration

jig (19344-M910) to the attached position of the receptacle (17164-M107).

6. Loosen SB3×12 (n=6) (illustrated on the right

figure), and adjust the vertical and horizontal positions so that the optical axis of the green laser coincides with the center of the near point optical axis calibration jig.

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Vertical position adjustment

Horizontal position adjustment

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Page 44

7 - 8

7.5.2 Optical axis adjustment of aiming beam

1. Loosen HH3×6 and turn the LD (17164EA02) to adjust the optical axis of the aiming beam so that the shape of the aiming beam becomes lateral as illustrated on the right when matching the aiming beam position to the near point optical axis calibration jig (19433-M910).

* The optical axis adjustment of the aiming

**

beam described above is a rough adjustment.

7.5.2.1 Near point confocal adjustment

1. Follow the instructions below to adjust the LD ASSY (17164-1600) so that the optical axis of the aiming beam coincides with the center of the near point optical axis calibration jig (19433-M910) and so it coincides with the green laser coaxially.

(1) Loosen SB3×8 (n=2) and adjust the

horizontal position of the LD ASSY (17164-

1600) at the position of the base (17164M088).

(2) Loosen SB3×12 (n=2) and adjust the vertical

position of the LD ASSY (17164-1600).

(3) Fasten and unfasten SB3×15 (n=4), and

finely adjust the vertical and horizontal position of the LD ASSY (17164-1600).

Turn the LD.

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7.5.2.2 Far point confocal adjustment

1. Emit the laser to a wall that is 1m or more away from the instrument. Follow the instructions below to adjust the DICHROIC ASSY (17164-1400) so that the aiming beam coincides with the green laser coaxially.

(1) Loosen SB3×10 (n=2) and move the

DICHORIC ASSY horizontally, forward and backward to adjust the position of the DICHORIC ASSY (17164-1400) with the play of the screw.

(2) Loosen SB2×5 (n=2), and fasten and

unfasten HH3×6 (n=2) to adjust the horizontal position of the DICHORIC ASSY (17164-1400).

(3) Fasten and unfasten HH3×6 and SB3×12 to

adjust the vertical position of the

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DICHORIC ASSY (17164-1400).

2. Perform the near point (see 7.5.2.1) and far point confocal adjustment repeatedly so that the aiming beam coincides with the green laser coaxially at the near point and far point.

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Page 45

7 - 9

7.5.3 1W and 1V adjustment

1. Remove the parts of the CONDENSER ASSY (17164-1700) that are the same as the parts

removed in 7.5.1. (See 7.5.1.)

* Before removing the parts, verify that the optical axis of the green laser coincides with the

center of the near point optical axis calibration jig (19433-M910). (See 7.5.1.)

2. Turn OFF the master and key switches. Connect the oscilloscope between TP8 and TP9,

and turn ON the master and key switches.

3. Press the POWER switch on the CB to set the laser power so that the power at the end of

the laser becomes 1000mW when emitting the laser.

4. Follow the instructions below to adjust the voltage so that the voltage of TP8 and TP9

becomes 1V when emitting the laser.

(a) Voltage of TP8: Adjust it with VR6 on the MASTER BOARD (17164-B01). (b) Voltage of TP9: Adjust it with VR3 on the MASTER BOARD (17164-BA01). * If the voltage cannot be adjusted to 1V, remove the MONITOR ASSY (17164-1200) from the

bench (17164-M001), insert 3PW3 (n=2) between the MONITOR ASSY (17164-1200) and bench (17164-M001), and adjust the position of the MONITOR ASSY (17164-1200). Then, check the voltage again.

5. Set DIP SW No. 1 and 2 on the CB (17164-BA03) to the OFF position.

6. Connect the oscilloscope to TP8 on the MASTER BOARD (17164-BA01).

7. Verify that the waveform of TP8 by the oscilloscope does not have any overshooting, noise

etc. when emitting the laser at the POWER of 500mW and 50mW.

8. Set DIP SW No. 1 and 2 on the CB (17164-BA03) to the ON position.

7.5.4 Condenser adjustment



1. Attach the receptacle (17164-M107) that was

removed in the green laser optical axis adjustment. (See 7.5.1.)

2. Set the power meter (COHERENT Model

201) in front of the laser beam window of the main body. Press the POWER switch on the CB to adjust the laser power so that the power meter reads 500mW. Take notes of the measured power and the power on the POWER display of the CB.

3. Connect the condensed laser magnification

jig (19344-9100) to the FIBER connector (receptacle: 17164-M107) of the main body.

4. Loosen SB3×12 and lock rings (17162-M070, n=2) of the adjustment screws (17164-M112,

n=2).

5. First, lower the laser power by pressing the POWER switch, then gradually increase it

until the laser slightly lights up.

6. Emit the laser and turn the adjustment screws (17164-M112, n=2) so that the position of

the green laser coincides with the center of the condensed laser magnification jig (19433-

9100).

7. Connect the fiber optic cable to the base (17164-M105) and FIBER connector of the main

body (receptacle: 17164-M107) together with the condenser. Set the power meter to the end of the fiber optic cable.

8. Set the POWER of the CB to the same power as in step 2.

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Page 46

7 - 10

9. Emit the laser and follow the instructions

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below to adjust the adjustment screw of each axis and holder so that the power meter reads



the maximum power.

(1) Turn the adjustment screw for the X axis

(17164-M112) to adjust its position so that the power meter reads the maximum power.

(2) Turn the adjustment screw for the Y axis

(17164-M112) to adjust its position so that the power meter reads the maximum power.

(3) Push and draw out the holder to adjust its

position so that the power meter reads the maximum power.

(4) Repeat steps (1) to (4).

10.

Emit the laser and verify that the power measured by the power meter is 90% or more of



the power obtained in step 2.

* If it is not, perform step 9 again.

11.

Make the fiber optic cable turn one rotation at 90 degree intervals. Verify that the measured

power at every 90 degrees is 90% or more of the power obtained in step 10.

* If it is not, perform step 9 again.

12.

Screw SB3×12 and lock rings (17162-M070) of the adjustment screws (17164-M112). Then,

perform steps 10 and 11 again.

13.

After the condenser adjustment is completed, reassemble the plate (17164-M111), pin

(17164-M115), mount (17164-M110) and spring (17164-M109).

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7.5.5 Laser alignment for the fiber optic cable

* Follow the instructions below to perform the laser alignment for the fiber optic cable only

when the laser alignment for the fiber optic cable has shifted.

1. Loosen SB3×12 and lock rings (17164-M070). (See 7.5.4.)

2. Attach the fiber optic cable to the CONDENSER ASSY (17164-1700), set the laser power output to 500mW and emit the laser onto a wall etc.

3. Turn the adjustment screws for the X and Y axes (17164-M112) so that the periphery of

Center of the laser beam

the burn pattern on the wall etc. fades out (lightly burnt).

4. Set the power meter to the end of the fiber optic cable.

5. Turn the adjustment screws for the X and Y axes (17164-M112) to adjust the position so that the power meter reads the maximum.

6. Perform step 5 repeatedly to adjust the position finely so that the power meter reads the maximum laser power.

7. Make the fiber optic cable turn one rotation at 90 degree intervals. Verify that the measured power at every 90 degrees is 90% or more of the power obtained in step 6.

8. Tighten SB3×12 and the lock rings (17164-M112) of the adjustment screws. Then, perform step 7 and verify that the measured power is 90% or more.

* If it is not, repeat steps 5 to 8.

Periphery of the burn pattern

Page 47

7 - 11

7.6 Total adjustment

7.6.1 Adjustment of the light control

1. Set DIP SW No. 1 and 2 on the CB to the OFF position, and No. 3 to 8 to the ON position.

2. Detach the fiber optic cable and set the value of parameter address 24 to “100”. (See 7.1.)

3. Attach the fiber optic cable and set the power meter (COHERENT Model 201) to the end

of the fiber optic cable.

4. Follow the instructions below to adjust the POWER display of the CB and the power

measured by the power meter when the POWER display of the CB is 50mW and 500mW.

At the power of 500mW: Adjust the value with VR3 on the MASTER BOARD (17164-BA01). At the power of 50mW: Adjust the value with parameter address 18. * Firstly, perform the adjustment at the power of 500mW. Then, perform the adjustment both

at the power of 500mW and 50mW so that the POWER display of the CB and the measured power do not shift.

Turn OFF the key switch and attach the fiber optic cable of each delivery unit to the main body.

6. Set the power meter (COHERENT Model 201) to each delivery unit.

7. Measure the power output of each delivery unit when the POWER display of the CB is

500mW. Follow the instructions below to adjust the power so that the measured power becomes 500mW ± 15%.

(1) Set DIP SW No. 6 of the CB to the OFF position. (2) Change the parameters below. (See 7.1.)

SL-130 delivery unit : Parameter address 20 SL-1600/30SL delivery unit : Parameter address 21 Other delivery units : Parameter address 23 ENDO delivery unit : Parameter address 24 BIO delivery unit : Parameter address 26 HAAG delivery unit : Parameter address 27

COMBO delivery unit : Parameter address 28 (3) Set DIP SW No. 6 of the CB to the ON position. (4) Measure the power output again, repeat steps

(1) to (4) until the power output becomes 500mW ± 15%.

* Set the spot size of each delivery unit to

the maximum.

* If the power output is 500mW ± 15%, it

is not necessary to change the parameters.

8. Measure the power output when the POWER display of the CB is 100 to 1700mW.

9. Adjust the power output with the parameter addresses 30 to 46 as in the right table so that the power output becomes 100 1700mW ± 15%. (See 7.1.)

* Set the spot size of each delivery unit to the

maximum.

Power of the fiber

optic cable At 100mW 30 At 200mW 31 At 300mW 32 At 400mW 33 At 500mW 34 At 600mW 35 At 700mW 36 At 800mW 37

At 900mW 38 At 1000mW 39 At 1100mW 40 At 1200mW 41 At 1300mW 42 At 1400mW 43 At 1500mW 44 At 1600mW 45 At 1700mW 46

Address

Page 48

7 - 12

10.

Measure the power output when the POWER display of the CB is 50mW, and adjust it

with parameter address 18 so that it becomes 50mW ± 20%. (See 7.1.)

11.

Set the spot size of each delivery unit to the minimum, and measure the power output

when the POWER display of the CB is 50mW.

12.

Adjust the power output with the parameter addresses below so that the measured power

becomes 500mW ± 15%. (See 7.1.)

SL-1600/30SL delivery unit : Parameter address 80 SL130 delivery unit : Parameter address 81 HAAG delivery unit : Parameter address 82

13.

Verify that the power output is within the specified range for all conditions (spot size,

POWER display of the CB).

14.

Compensate for a shift in the power output according to the spot size by changing the

parameter values finely until the power output becomes within the specified range.

15.

Set the POWER display of the CB to 1700mW. Verify that the rising voltage of TP8 is

within the range of the stable voltage ± 20% when depressing the foot switch.

16.

After the adjustment is completed, set all the DIP switches of the CB (17164-BA03) to the

ON position.

7.6.2 Power adjustment of the aiming beam

1. Set the power meter (LASER MATE Q 0217-050-00) to the delivery unit, and multimeter between TP12 on the MASTER BOARD (17164-BA01) and GND. Set the AIMING display of the CB and the spot size of each delivery unit to the maximum.

2. Adjust the optical axis of the aiming beam again while checking the power meter so that the power of the aiming beam becomes the maximum. (See 7.6.2.)

3. Adjust the power with VR1 on the MASTER BOARD (17164-BA01) so that the power output of the aiming beam becomes 0.3mW.

4. Verify that the voltage (obtained by the multimeter) between TP12 on the MASTER BOARD (17164-BA01) and GND is 1V or less.

* The voltage is normally about 0.5V or so.

5. Set the AIMING display of the CB to the minimum. Change the value of parameter address 19 so that the power output of the aiming beam becomes 0.01mW or less. (See

7.1.)

6. Set the AIMING display of the CB to the minimum again. Verify that the power output of the aiming beam is 0.3mW. If not, perform steps 3 to 5.

7. Turn the fiber optic cable 360 degree and verify that the power varies within the range of ± 10%.

8. A shift in the POWER according to the spot size can be compensated for with the parameter.

9. Measure the power output of the aiming beam when the spot size is set to the maximum and minimum. Verify that the power output of the aiming beam is within the specified range for all conditions.

Page 49

7 - 13

7.6.3 Adjustment for overpower

7.6.3.1 Adjustment at 1000mW

1. Set DIP SW No. 1, 2 of the CB to the OFF and No. 3 to 8 to the ON position.

2. Turn OFF the master and key switches. Set the oscilloscope by following the instructions

below and turn ON the master and key switches.

CH1: TP4 on the MASTER BOARD (17164-BA01) CH2: IC1 77th pin on the MASTER BOARD (17164-BA01)

3. Set the value of parameter address 57 to “9”.

(See 7.1.)

4. Emit the laser at the POWER of 50mW and

observe the waveform with the oscilloscope. Verify that the time-lag between CH1 and CH2 (when the signal becomes high) is 7 msec. or less.

* Perform steps 3 and 4 only for the program Ver. 1.00.

5. Turn OFF the master and key switches. Set the oscilloscope by following the instructions

below, and turn ON the master and key switches.

CH1: TP9 on the MASTER BOARD (17164-BA01) CH2: TP8 on the MASTER BOARD (17164-BA01)

6. Set the POWER display of the CB to “1000mW” and turn VR6 on the MASTER BOARD

(17164-BA01) to match the TP8 voltage with the TP9 voltage when emitting the laser.

* The TP9 voltage is fixed.

7. Set the POWER display of the CB to

“1000mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164BA01) so that the TP8 voltage becomes the TP9 voltage + 20%. Adjust the value of parameter address 55 so that INTLK 2.7 (only a beep) occurs at that time. (See 7.1.)

8. Set the POWER display of the CB to

“1000mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164BA01) so that the TP8 voltage becomes the TP9 voltage -20%. Adjust the value of parameter address 58 so that Err. 15 (only a beep) occurs at that time. (See 7.1.)

9. Turn VR6 on the MASTER BOARD (17164-

BA01) to match the TP8 voltage with the TP9 voltage when emitting the laser.

10.

Set all DIP switches of the CB (17164-BA03)

to the ON position.

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Page 50

7 - 14

7.6.3.2 Adjustment at 50mW

1. Set DIP SW No. 1, 2 of the CB (17164-BA03) to the OFF and No. 3 - 8 to the ON position.

2. Turn OFF the master and key switches. Set the oscilloscope to the terminals below and turn ON the master and key switches.

CH1: TP5 on the MASTER BOARD (17164-BA01) CH2: TP4 on the MASTER BOARD (17164-BA01)

3. Turn VR6 on the MASTER BOARD (17164-BA01) to match the TP4 voltage with the TP5 voltage when emitting the laser.

* The TP5 voltage on the MASTER BOARD (17164-BA01) is fixed.

4. Set the POWER display of the CB to “50mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164-BA01) so that the TP4 voltage becomes the TP5 voltage + 20%. Adjust the value of parameter address 56 so that INTLK 2.7 (only a beep) occurs at that time. (See 7.1.)

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5. Set the POWER display of the CB to “50mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164-BA01) so that the TP4 voltage becomes the TP5 voltage

-20%. Adjust the value of parameter address 59 so that Err. 15 (only a beep) occurs at that time. (See 7.1.)

6. Turn VR6 on the MASTER BOARD (17164BA01) to match the TP4 voltage with the TP5 voltage when emitting the laser.

7. Set all DIP switches of the CB (17164-BA03) to the ON position.

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Page 51

7 - 15

7.6.4 Check of overpower

1. Set all DIP switches of the CB to the ON position.

2. Turn OFF the master and key switches. Set the oscilloscope by following the instructions

below and turn ON the master and key switches.

CH1: TP9 on the MASTER BOARD (17164-BA01) CH2: TP8 on the MASTER BOARD (17164-BA01)

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3. Set the POWER display of the CB to

“1000mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164BA01) so that the TP8 voltage becomes the TP9 voltage -20%. Verify that Err. 15 occurs (laser emission is OFF, as well) at that time.

4. Set the POWER display of the CB to

“1000mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164BA01) so that the TP4 voltage becomes the TP5 voltage + 20%. Verify that INTLK 2.7 occurs (laser emission is OFF, as well) at that time.

5. Turn OFF the master and key switches. Set

the oscilloscope to the terminals below and turn ON the master and key switches.

CH1: TP5 on the MASTER BOARD (17164-BA01) CH2: TP4 on the MASTER BOARD (17164-BA01)

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6. Set the POWER display of the CB to

“50mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164-BA01) so that the TP4 voltage becomes the TP5 voltage + 20%. Verify that INTLK 2.7 occurs (laser emission is OFF, as well) at that time.

7. Set the POWER display of the CB to

“50mW”. While emitting the laser, turn VR6 on the MASTER BOARD (17164-BA01) so that the TP4 voltage becomes the TP5 voltage

-20%. Verify that Err. 15 occurs (laser emission is OFF, as well) at that time.

8. Turn VR6 on the MASTER BOARD (17164-

BA01) to match the TP4 voltage when emitting the laser with the TP5 voltage.

9. After the adjustment is completed, verify with

the oscilloscope that the waveforms at the powers of 50 - 1700mW match.

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Page 52

7 - 16

7.6.5 Adjustment of the COAG TIME and REPEAT TIME

1. Set the analyzing recorder (Model 3565) to the instrument.

2. Set the POWER display of the CB to “250mW” and TIME display to “0.01 sec”.

3. Emit the laser and adjust the value of parameter address 52 so that the measured value (COAG TIME) by the analyzing recorder becomes 0.01 sec. (See 7.1.)

4. Verify that the COAG TIME is within the specified range when the TIME display of the CB is set to 0.02 - 3.00 sec.

[Specification of COAG TIME]

0.01 - 0.09 sec: TIME display of the CB ± 20%

0.10 - 3.00 sec: TIM display of the CB ± 10%

5. Set the REPEAT TIME display of the CB to “0.1 sec”.

6. Emit the laser and adjust the value of parameter address 53 so that the measured value (REPEAT TIME) by the analyzing recorder becomes 0.1 sec. (See 7.1.)

7. Verify that the REPEAT TIME is within the specified range when the REPEAT TIME display of the CB is set to 0.2 - 1.0 sec.

Specification of REPEAT TIME: REPEAT TIME display of the CB ± 10%

Page 53

8.1 Wiring diagram

REFERENCES

Page 54

8 - 2

8.2 Connectors and cables

17164-EA01

17164-EA02

17164-EA03

Page 55

17164-EA04

8 - 3

17164-EA05

17164-EA06

Page 56

8 - 4

17164-EA07

17164-EA08

Page 57

17164-EA09

17164-EA10

8 - 5

17164-EA11

Page 58

8 - 6

17164-EA12

17164-EA13

Page 59

17164-EA14

17164-EA15

8 - 7

17164-EA16

17164-EA17

Page 60

8 - 8

17164-EA18

17164-EA19

17164-EA20

17164-EA21

Page 61

17164-EA22

8 - 9

Page 62

8 - 10

8.3 Configuration

Fiber optic cable connector

BIO illumination control

Delivery unit connector

Key switch

Control panel

FOOT SW connector

DETECTOR connector

REMOTE connector

Air vent

Fuse carrier

Master switch

Inlet

Page 63

8.4 Labels

8 - 11

[For US]

Page 64

8 - 12

[For 100V]

Page 65

8 - 13

[For 200V]

Page 66

8 - 14

8.5 List of the replacement parts

Name of part Part No.

Switching power supply 17164-E010

MASTER BOARD 17164-BA01

FAN 17164-EA06

COAG SHUTTER ASSY 17164-1310

SENSOR BOARD 17162-BA10

AIMING SHUTTER ASSY 17164-1320

Laser ASSY 17164-1000

LASER HEAD 17164-G001

FIBER SW 17164-EA01

MAIN CPU 17164-E150

SUB CPU 17164-E160

CB CABLE 17164-EA13

AIMING LD 17164-EA02

DELIVERY board 17164-BA08

MONITOR ASSY 17164-1200

EMERGENCY SW 17164-EA21

8.6 Tools

• Set of Phillips screwdrivers

• Set of flat-head screwdrivers

• Blower

• Thin stick (chopstick)

• Hex wrench

• Needle nose pliers

• Nipper

• Wire stripper

• Soldering iron

• Tweezers

•Set of precision screwdrivers

• Industrial screwdriver

• Multimeter

• Oscilloscope

• Lens cleaning paper

• Alcohol solution

• Thread-locking adhesive

• Heat shrinkage tube

• Japanese special paper (Gampi-shi)

• Solder

Page 67

8.7 DIP switches

No. Operation Contents

1 Interlock cancellation Interlock detection is canceled. (However, laser emission is

stopped by hardware when INTLK occurs.)

2 Error cancellation Error detection is canceled

.*1)

3 Not used 4 Switching between Current

and Light modes

Current control mode (OFF) or Light control mode (ON) of laser

emission can be selected. 5 Continuous emission mode Laser emission time can be set to the Continuous mode. 6 Parameter setting mode Each parameter can be set. 7 Not used 8 Service mode Supplied current, etc. to the laser head can be indicated.

*1) To avoid unintended laser emission and deterioration of the laser, Err 13, Err 20 and Err 21

occur even when the error detection is canceled.

8.8 Error code table

Err Symptom Causes Countermeasures

1 The COAG shutter

does not work properly.

2 The motorized

protective filter does not work properly.

3 The safety shutter

does not work properly.

10 The laser goes out. Deterioration of the green laser Replace the laser.

13 L/D driving circuit is

abnormal.

15 Power output is

unstable.

20 L/D temperature is

abnormal.

21 Temperature of the

green laser head is abnormal.

53 Trigger signal circuit

is abnormal.

54 Fiber optics signal

circuit is abnormal.

55 Motorized protective

filter signal circuit is abnormal.

90 Program data is

abnormal.

91 EEPROM data is

abnormal.

93 Data error Data in the memory is abnormal. Cancel the error, and input the data

94 KEYLOCK error Improper motion of the program Replace the CPU. 95 SUB CPU error Malfunction of the SUB CPU Replace the SUB CPU.

Malfunction or improper position of the COAG shutter

Malfunction or improper position of the motorized protective filter

Malfunction or improper position of the safety shutter

Failure of the L/D current driving circuit (Tr1, 2) Unstable power output of the green laser Malfunction of the L/D temperature controlling unit

Malfunction of the green laser head temperature controlling unit

Failure of the trigger switch Broken cable

Failure of the fiber switch Broken cable

Failed sensor of the motorized protective filter Broken cable Improper setting Contents of the ROM are rewritten. Contents of the EEPROM are rewritten.

Check the motion of the shutter. Check the position of the sensor.

Check the motion of the motorized protective filter. Check the position of the sensor. Check the DELIVERY connector. Check the parameter setting for the delivery unit. Check the motion of the shutter. Check the position of the sensor.

Check the laser control signal cables P116 to P119. Check or replace Tr1 and Tr2.

Readjust the detection of underpower.

Repair the broken cable between the LD sensor and P123. Repair the failed controlling circuit on the BA01 board. Repair the broken cable between the LH sensor and P123. Repair the failed controlling circuit on the BA01 board. Check for breakage of the foot switch. Readjust the position of the micro switch. Reconnect the fiber optic cable plug. Check and adjust the position of the micro switch. Reconnect the delivery unit to the DELIVERY connector. Check and adjust the sensor position of the motorized protective filter. Replace the CPU.

Cancel the error, and input the data again.

again.

8 - 15

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8.9 INTERLOCK code table

No. Symptom Causes Countermeasures

2.7 Overpower Overpower of the laser Readjust the detection of overpower. Repair broken cable P118. Repair the failed BA01 board.

4.7 The system

is heated.

6.3 Remote

interlock is OFF.

The inside of the system is overheated. Turn OFF the master switch for about 1

hour for cooling.

The remote interlock connector is not connected, or remote interlock switch is open.

Connect the remote interlock connector.

8.10 Other messages

Following abbreviated messages appear on the TIME display when the key operation is improper.

Message for

improper operation

A.P. The STATUS switch is pressed when the

aiming beam is OFF.

F.S. The AIMING switch is pressed when the

fiber-optic cable is not connected.

S.U. The AIMING switch, etc. is pressed when

the delivery or delivery mirror is not positioned where the laser can be emitted.

S.S. The foot pedal is depressed when the

“STANDBY” indication is lit up. The foot pedal is depressed when the motorized protective filter is not set. The AIMING switch is pressed when a delivery unit without the motorized protective filter is connected.

Causes Countermeasures

Turn the aiming beam ON.

Connect the fiber optic cable.

Check the position of the delivery or delivery mirror.

Press the STATUS switch to change the indication to “READY”. Set the protective filter. P. F.

Connect a delivery unit with the protective filter.

8.11 Special key operations

Function Key operation Adjusting the laser power output

Displaying the archival record of the instrument Displaying the total shot numbers Recording the Error Recording the Interlock

Emergency mode (Laser can be emitted even when the detective signal for the motorized protective filter and delivery unit is improper.)

Turn ON the key switch while holding down the AIMING switches (△, ▽) and

STATUS switch simultaneously. Setting of the laser power output becomes possible. Green laser power output

Offset: Address 18 Gain: Address 20 – 29 (It varies according to the delivery unit.)

AIMING laser power output

Offset: Address 19

Gain: Address 17 [NOTE] Only values of the parameter addresses 17 – 29 can be changed. Turn ON the key switch while holding down the INTVL and STATUS switches simultaneously. Every pressing of the RESET switch changes the following indications.

Total shot numbers: Number on the POWER display × 1000 shots

Latest occurred Error No.

Latest occurred Interlock No.

Turn ON the key switch while holding down the POWER switches (△, ▽) and

STATUS switch simultaneously. [NOTE] Use this mode only when operation cannot be continued due to a broken signal cable, etc. Give the operator instructions to check the protective filter and proper installation of the delivery unit adequately.

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* Specifications and design are subject to change without notice for improvement.

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