Nidek Medical CP-690 Service Manual
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Nidek Medical CP-690 Service Manual

Automatic chart projector
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NIDEK
AUTOMATIC CHART PROJECTOR
Model CP-690
SERVICE MANUAL
MCP7**RDA001B/E
Total Page 70
2006.7

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Summary of Contents for Nidek Medical CP-690

  • Page 1 NIDEK AUTOMATIC CHART PROJECTOR Model CP-690 SERVICE MANUAL MCP7**RDA001B/E Total Page 70 2006.7...
  • Page 2 * Specifications are subject to change without notice for improvement. NIDEK CO., LTD. : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan (Manufacturer) Telephone: (0533) 67-6611 Facsimile: (0533) NIDEK CO., LTD : 3F Sumitomo Fudosan Hongo Bldg., 3-22-5, Hongo, Bunkyo-Ku, Tokyo 113-0033, (Tokyo Office) Japan Telephone: (81-3) 5844-2641...

  • Page 3: Table Of Contents

    Page § 1 INTRODUCTION......................1-1 § 2 CAUTIONS ........................2-1 § 3 TROUBLESHOOTING ....................3-1 § 4 SUB TROUBLESHOOTING ..................4-1 4.1 The Initialization does not Start................4-1 4.2 The Motor does not Work..................4-2 4.3 The Motors do not Stop....................4-3 4.4 The Projection Lamp does not Go On..............4-4 4.5 The Chart Image is Partly Blocked................4-5 4.6 The Chart Brightness is Unsuitable.
  • Page 4 Page 5.9 Replacement of the Power Transformer ..............5-14 5.10 Replacement of the LED ASSY/C lens ASSY............. 5-15 5.11 Replacement of the Holder ASSY................ 5-17 5.12 Replacement of the Fuses ..................5-18 5.13 Cleaning........................ 5-19 5.13.1 Cleaning of the chart and mask ..............5-19 5.13.2 Cleaning of the condenser lens..............

  • Page 5: Introduction

    Projector Model CP-690. For proper after-sales service, it is necessary to understand this manual thoroughly before servicing. Refer to “CP-690 Operator’s manual”. Specifications are subject to change without notice for improvement. As for important changes, refer to Technical Bulletins. In case the instrument cannot be repaired by procedures described in this manual, please tell us...
  • Page 6 1 - 2...

  • Page 7: Cautions

    • When handling circuit boards, be sure to touch only parts indicated in this manual. If not, an electric shock or a failure may be caused. • If the CP-690 produces smoke or strange odors, immediately turn off the system and disconnect the electrical plug from the outlet. Usage of the system under such abnormal conditions may cause fire or electric shock.
  • Page 8 2 - 2...

  • Page 9: Troubleshooting

    § 3 TROUBLESHOOTING Turn the power switch ON. Does the LED next to the power switch Go to 4.11. go on? Go to 4.1. Do both chart and mask Does the initialization* start? motors work? (Do the motors rotate?) Go to 4.2. Does the initialization finish? Go to 4.3.
  • Page 10 3 - 2 Is the chart image clear? Go to 4.8. Does the chart image change as Go to 4.9. operated by the remote control? Are there any charts blocked by the mask? Make fine adjustments of the chart and mask ASSYs. Does the chart tilt against the mask? (See 6.5.) Go to 4.10.

  • Page 11: Sub Troubleshooting

    § 4 SUB TROUBLESHOOTING 4.1 The Initialization does not Start. Are the fuses blown? Replace the fuses. (See 5.12.) Is the working voltage ±10 % of the Use another wall outlet or a voltage rating voltage? regulator. Is the setting of the voltage selector Set the voltage selector again.

  • Page 12: The Motor Does Not Work

    4 - 2 4.2 The Motor does not Work. When interchanging connector Replace the BA01 board. positions of the chart and mask motors, (See 5.2.1.) does the working motor change? Replace the motor that does not work. As for the chart motor, see 5.4. As for the mask motor, see 5.6.

  • Page 13: The Motors Do Not Stop

    4 - 3 4.3 The Motors do not Stop. Do the J4 and J6 connectors on the Reconnect the connectors. BA01 board have poor contact? Is each voltage between TP1 and TP3 Adjust the voltage of each sensor. (of the chart sensor) and between TP2 (See 6.2.) and TP3 (of the mask sensor) on the Is the problem corrected?

  • Page 14: The Projection Lamp Does Not Go On

    4 - 4 4.4 The Projection Lamp does not Go On. Is the voltage between the 1st and 2nd Replace the BA01 board. pins of J2 connector on the BA01 board (See 5.2.1) within DC3.69 to 6.01 V? (when the setting of SW2 is channel “2”.) Replace the BA14 board.

  • Page 15: The Chart Image Is Partly Blocked

    4 - 5 4.5 The Chart Image is Partly Blocked. Move the VA mask toward the inside of Is the blocked part on the right side of the visual acuity indication or chart? the instrument (mask motor side). (See 6.6.2.) Are the motors, chart ASSY and mask Adjust the chart and mask positions.

  • Page 16: The Chart Brightness Is Unsuitable

    4 - 6 4.6 The Chart Brightness is Unsuitable. Is the setting of the light control switch Set the light control switch to the (SW2 on the BA01 board) appropriate? appropriate channel. [This switch has five channels; from 1 (See 6.6.3.) (most bright) to 5 (darkest).] * The setting at shipment is “2”.
  • Page 17 4 - 7 Is the polarized chart dark? Is the polarizing filter burnt? (is it brown?) Replace the chart ASSY. (See 5.5.) Is the voltage between the 1st and 2nd pins of the J2 connector over DC 5 V? Replace the transformer. (when the setting of SW2 is channel 2) (See 5.9.) Replace the screen.

  • Page 18: The Chart Brightness Is Uneven

    4 - 8 4.7 The Chart Brightness is Uneven. Does the unevenness show up in the Clean the chart ASSY. same area of the chart? (See 5.13.1.) Clean the C lens ASSY. Is the C lens ASSY dirty, burnt or (See 5.13.2.) scratched? If the dirt or burnt area can not be...

  • Page 19: The Chart Image Is Not Clear

    4 - 9 4.8 The Chart Image is not Clear. Adjust the focus of the chart. Is the image still not clear? (As for the adjustment method, See the operator’s manual.) Clean the chart ASSY. Is the image still not clear? (See 5.13.1.) Clean the holder ASSY.

  • Page 20: The Chart Image Does Not Change As Operated By The Remote Control

    Make the settings for using several The settings of the remote control and CP-690 units. (See 6.6.5.) main body (channel of the remote control) are correct? Is the voltage between the 1st pin of the Replace the BA01 board.

  • Page 21: The Polarized Chart Does Not Disappear

    4 - 11 4.10 The Polarized Chart does not Disappear. Is the main body tilted? Install the main body on a stable and level surface. Is the projected chart tilted? Adjust the initialized position. (See 6.1.) Is the refractor used to polarize the Replace the chart ASSY.

  • Page 22: The Led Does Not Go On

    4 - 12 4.11 The LED does not Go On. Is the voltage between the 1st and 2nd Replace the BA01 board. pins of J9 on the BA01 board +4.5 to 5 (See 5.2.1.) (Before measuring the voltage, remove the P9 connector from the board.) Replace bottom cover...

  • Page 23: Replacement

    § 5 REPLACEMENT 5.1 How to Remove the Covers [NOTE] Before removing the covers, unless “Turn the power switch ON” is written, be sure to turn the power switch OFF and unplug the power cord. [NOTE] Once the lamp goes on, its surroundings become hot. Do not touch parts near the lamp until they cool down.
  • Page 24 5 - 2 [How to remove the disk cover] 1. Remove the top cover ASSY. 2. Unscrew AS3 × 6 (n=4) to remove the AS3×6 CAUTION label disk cover (M030). * When remounting the disk cover, direct the side affixed with the CAUTION label to the Disk cover lamp side (the rear side of the instrument).

  • Page 25: Replacement Of The Circuit Boards

    5 - 3 5.2 Replacement of the Circuit Boards 5.2.1 Replacement of the BA01 board Replacement part: BA01 board (33155-BA01) * Circuit board, bridge diode, regulator IC, insulating sheet (Each 1 pc.) 1. Remove the top cover ASSY. (See 5.1.) 2.

  • Page 26: Replacement Of The Ba02 Board

    5 - 4 5.2.2 Replacement of the BA02 board Replacement part: 33155-BA02 1. Remove the top and front cover ASSYs. (See 5.1.) 2. Disconnect the connector from J7 on the BA01 board. 3. Unscrew BS3 × 6 (n=2) to replace the BA02 board with a new one.

  • Page 27: Replacement Of The Sensors

    5 - 5 5.3 Replacement of the Sensors 5.3.1 Replacement of the chart sensor Replacement part: Chart sensor (33155-EA05) 1. Remove the top cover ASSY. (See 5.1.) 2. Disconnect the connector from J6 on the BA01 board. * Cut the tie wrap (T18R) which ties the cables of the chart sensor. 3.

  • Page 28: Replacement Of The Mask Sensor

    5 - 6 5.3.2 Replacement of the mask sensor Replacement part: Mask sensor (33155-EA05) 1. Remove the top cover ASSY. (See 5.1.) 2. Disconnect the connector from J4 on the BA01 board. * Cut the tie wrap (T18R) which ties the cables of the mask sensor. 3.

  • Page 29: Replacement Of The Chart Motor

    5 - 7 5.4 Replacement of the Chart Motor Replacement part: Chart motor (33155-E003) 1. Remove the top and bottom cover ASSYs. (See 5.1.) 2. Disconnect all connectors (except for J7) from the BA01 board. * Cut the tie wrap (T18R) which ties the cables of the chart motor. 3.
  • Page 30 5 - 8 9. Make a clearance of 0.5 mm between the mask and chart disks by displacing the chart ASSY. Tighten HH4 × 6 (n=4) of the chart disk retainer. * Tighten the four screws (HH4 × 6(n=4)) while checking that the two tips contact the notch of the motor shaft (flat side) vertically.

  • Page 31: Replacement Of The Chart Assy

    5 - 9 5.5 Replacement of the Chart ASSY Replacement part: Chart ASSY (U type: 33156-1400, M type: 33156-3400, F type: 33157-1400, T type: 33158-1400, P type: 33159-1400, I type: 33160-1400, UK type: 33161-1400, A type: 33162-1400) 1. Remove the top and bottom cover ASSYs. (See 5.1.) 2.
  • Page 32 5 - 10 9. Make a clearance of 0.5 mm between the mask and chart disks by displacing the chart ASSY. Tighten HH4 × 6 (n=4) of the chart disk retainer. * Tighten the four screws (HH4 × 6 (n=4)) while checking that the two tips contact the notch of the motor shaft (flat side) vertically.

  • Page 33: Replacement Of The Mask Motor And Mask Assy

    5 - 11 5.6 Replacement of the Mask Motor and Mask ASSY Replacement part: Mask motor (33155-E003), mask ASSY (U, M, F, T and P types: 33156-1100, I type: 33160-1100, UK and A types: 33161-1100) 1. Remove the top and bottom cover ASSYs. (See 5.1.) 2.
  • Page 34 5 - 12 7. Fix the mask ASSY in the disk housing. * Mount the disk motor being careful of the wiring side. (See the figure on page 5-11.) 8. Loosen HH4 × 6 (n=4) of the mask disk retainer to make a clearance of 0.5 mm between the mask and chart disks.

  • Page 35: Replacement Of The Bottom Cover Assy (Power Led)

    5 - 13 5.7 Replacement of the Bottom Cover ASSY (Power LED) Replacement part: Bottom cover ASSY (33156-1015) 1. After removing the top and front cover ASSYs according to “5.1 How to remove the covers”, replace the bottom cover ASSY with a new one. (See 5.1.) * Peel off the fuse label (100 V system: 33102-M103, 200 V system: 33138-M086), serial number label, and serial number plate from the bottom ASSY and stick them to the new bottom cover ASSY in the same positions.

  • Page 36: Replacement Of The Power Transformer

    5 - 14 5.9 Replacement of the Power Transformer Replacement part: Power transformer (100 V system: 33155-E001, 200 V system: 33155-E002) 1. Remove the top and bottom cover ASSYs. (See 5.1.) 2. Disconnect the connector from J1 on the BA01 board. Terminal position of the inlet 3.

  • Page 37: Replacement Of The Led Assy/C Lens Assy

    5 - 15 5.10 Replacement of the LED ASSY/C lens ASSY Replacement part: LED ASSY (33156-1205) C lens ASSY (U, M, F, T, P, I, and M types: 33156-1235, UK and A types: 33161-1225) [NOTE] Once the lamp goes on, its surroundings become hot. Do not touch parts near the lamp until they cool down.
  • Page 38 5 - 16 [Replacement of the C lens ASSY] 1) Unscrew SB3 × 6 (n=2) to remove the illumination part ASSY. SB3×6 Illumination part ASSY 2) Loosen TH3 × 4 (n=3) to remove the C lens ASSY. LED ASSY 1205 C lens ASSY 1235 TH3×4...

  • Page 39: Replacement Of The Holder Assy

    5 - 17 5.11 Replacement of the Holder ASSY Replacement part: Holder ASSY (variable power model: 33135-1300, 30 × model: 33156-1310, 25 × model: 33362-M4604) 1. Remove the top and bottom cover ASSYs. (See 5.1.) 2. Loosen HH3 × 5 (n=2) to remove SB3 × 6, SW3 and 3PW3 and replace the holder HH3×5 ASSY with a new one.

  • Page 40: Replacement Of The Fuses

    5 - 18 5.12 Replacement of the Fuses Replacement part: Two fuses [100 V system: 80402-02039 (1 A, 250 V), 200 V system: 80402-02037 (0.5 A, 250 V)] Replace the fuses according to the CP-690 operator’s manual.

  • Page 41: Cleaning

    5 - 19 5.13 Cleaning 5.13.1 Cleaning of the chart and mask 1. Remove the top cover ASSY and disk cover (M030). (See 5.1.) 2. Blow off the dust on the disks with a blower. * For stubborn dirt on the disks, wipe it with Open mask a swab whose tip is wrapped in lens cleaning paper and is dampened with the...

  • Page 42: Cleaning Of The Condenser Lens

    5 - 20 5.13.2 Cleaning of the condenser lens [NOTE] Once the lamp goes on, its surroundings become hot. Do not touch parts near the lamp until they cool down. 1. Remove the top cover ASSY. (See 5.1.) 2. Remove the condenser lens. (See 5.10.) 3.

  • Page 43: Cleaning Of The Holder Assy

    5 - 21 5.13.3 Cleaning of the holder ASSY 1. Remove the top and front cover ASSYs. (See 5.1.) [30 × model, 25 × model] 1) Rotate the objective holder counterclockwise to remove it from the lens barrel. Lens barrel 鏡筒...
  • Page 44 5 - 22...

  • Page 45: Adjustement

    § 6 ADJUSTMENT 6.1 Adjustment of the Initialized Position The sensors and shading plates detect the initialized position. The sensor voltage (position) must be adjusted when the motor, sensors and disks are misaligned by replacing or adjusting the parts. 1. Remove the top cover ASSY. (See 5.1.) 2.

  • Page 46: Adjustment Of The Sensor Voltage

    6 - 2 6.2 Adjustment of the Sensor Voltage 1. Remove the top cover ASSY. (See 5.1.) 2. Turn No. 8 of the DIP switch on the BA01 board to the ON position and turn the power switch ON. * When turning the DIP switch to the ON or OFF position, slide the switch without loading the circuit board.

  • Page 47: Adjustment Of The Lamp (Led) Position

    6 - 3 6.3 Adjustment of the Lamp (LED) Position [NOTE] For variable power lens barrel, set the lens position as below before adjustment. Lens position does not matter for 30 × and 25 × lens barrel model Variable power lens 10±1 mm barrel Center of the...

  • Page 48: Adjustment Of The Fixed Mask Position

    6 - 4 6.4 Adjustment of the Fixed Mask Position [NOTE] The parts around the lamp become hot. Do not touch the parts directly by hand. 1. Turn the power switch ON, project the chart on the screen and adjust the focus. 2.

  • Page 49: Adjustment Of The Chart And Mask Positions

    6 - 5 6.5 Adjustment of the Chart and Mask Positions 1. Remove the top and bottom cover ASSYs and disk cover (M030). (See 5.1.) 2. Turn the power switch ON, project the chart onto the screen and adjust the focus. 3.

  • Page 50: Setting

    6 - 6 6.6 Setting 6.6.1 Setting of the voltage selector * Check that the number indicated in the voltage indication window, which is next to the power socket on the bottom side of the instrument, matches the supplied power voltage. If not, change it as follows.

  • Page 51: To Display Or Not Display The Visual Acuity

    6 - 7 6.6.2 To display or not display the visual acuity BS3× 1. Remove the top cover ASSY. (See 5.1.) 2. Loosen BS3 × 6 fixing the VA mask. VA mask 3. Switch between the display and non-display of the visual acuity by moving the VA mask.

  • Page 52: Selecting The Amount Of Chart Light

    3. Turn the power switch ON and project the chart on the screen to check that the chart brightness is suitable. * Use the screen attached to the CP-690 main body. 4. Remount the top cover ASSY. 6.6.4 Setting of the beep sound volume (Response sound) 1.

  • Page 53: Setting Of The Dip Switch

    * See the table below as for each function of the DIP switch. 3. Remount the top cover ASSY. SW1 of the DIP switch [DIP switch functions of the BA01 board of the CP-690] Switch No. Function According to the combination of the...
  • Page 54 [Setting when using several units (Switch code setting)] When several CP-690 units are used in the same room, set the switches of the main body and remote control according to the table below in order to prevent electrical interference of the remote control.

  • Page 55: Information

    § 7 INFORMATION 7.1 Wiring Diagram [Total wiring Diagram] EA13 EA14 CHART LED BA14 RESISTOR BOARD...
  • Page 56 7 - 2 [EA01]...
  • Page 57 7 - 3 [EA02]...
  • Page 58 7 - 4 [EA05] * Describe the connector No. when assembling. •Mask side: P4 •Chart side: P6 [EA06] [EA13] [EA14] BA01...

  • Page 59: How To Carry Out The Wiring

    7 - 5 7.2 How to Carry Out the Wiring Carry out the wiring as follows and tie the wiring with a tie wrap (T18R) in the position “ “. Tie wrap（T18R） Band the mask motor with the cable of mask sensor. Draw a tie wrap through a hole of disk house.
  • Page 60 7 - 6...

  • Page 61: List Of Replaceable Parts

    § 8 LIST OF REPLACEABLE PARTS [U type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Board (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 Power 100 V system...
  • Page 62 8 - 2 [M type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Board (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 Power 100 V system 33155-E001 Parts in EA01 transformer...
  • Page 63 8 - 3 [F type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Board (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 Power 100 V system 33155-E001 Parts in EA01 transformer...
  • Page 64 8 - 4 [T type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Board (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 Power 100 V system 33155-E001 Parts in EA01 transformer...
  • Page 65 8 - 5 [P type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Board (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 Power 100 V system 33155-E001 Parts in EA01 transformer...
  • Page 66 8 - 6 [I type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Boards (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 Power 100 V system 33155-E001 Parts in EA01 transformer...
  • Page 67 8 - 7 [UK type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Board (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 200 V system power transformer 33155-E002 Parts in EA02 Motor (for chart/mask)
  • Page 68 8 - 8 [A type] Type Parts name Parts No. Number Remarks board, bridge diode, regulator IC, BA01 board (main board) 33155-BA01 insulating sheet Board (each: 1 pc.) BA02 board (IR board) 33155-BA02 BA14 board (RESISTOR board) 33155-BA14 100 V system power transformer 33155-E001 Parts in EA01 Motor (for chart/mask)

  • Page 69: Tools And Measuring Devices

    § 9 TOOLS AND MEASURING DEVICES [Tools and measuring devices] Phillips screwdriver set Flatblade screwdriver set Precision screwdriver set Hexagonal-head wrench set Nipper (For cutting tie wraps) Long-nose pliers Tweezers Tester Soldering iron Penlight [Others] Threadlocking adhesive (Three Bond 1401B) Liquid mixture (methanol 50 % + ether 50 %) KIMWIPES (CRECIA WIPER S-200) Blower...
  • Page 70 9 - 2...

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