Sekonic LITEMASTER PRO Service Manual
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Sekonic LITEMASTER PRO Service Manual

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I108-L478-002
LIGHT METER
LITEMASTER PRO
L-478D/L-478DR
SERVICE MANUAL

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Summary of Contents for Sekonic LITEMASTER PRO

  • Page 1 I108-L478-002 LIGHT METER LITEMASTER PRO L-478D/L-478DR SERVICE MANUAL...
  • Page 2 This manual may be revised from time to time due to modifications in the specifications of this device. In such case, insert the new pages together with the old pages (the old pages may also be necessary depending on the model).

  • Page 3: Table Of Contents

    Table of Contents Page 1. Equipment, tools and materials required for repair ....................4 2. Parts Designation ..............................5 3. Malfunction Repair Methods ........................... 6 3.1 Disassembly / assembly procedure ......................... 6 3.1.1 Removal of JR10-122 Main Frame Cover / R Assy ................6 3.1.2 Removal of JR11-902(JR21-902) PCB /2 Assembly ................

  • Page 4: Equipment, Tools And Materials Required For Repair

    Microsoft Windows 7 Service Pack1 or Later. Required Memory : 256MB (Recommended 512MB) Required Hard disk : 100MB Remarks : Please warn security enough 13. CD supplied by SEKONIC L-478 Maintenance Tools 14. USB Cable (JH109001 Forward Wire Harness or equivalent: A-MiniB type)

  • Page 5: Parts Designation

    2. Parts Designation...

  • Page 6: Malfunction Repair Methods

    3. Malfunction Repair Methods 3.1 Disassembly / assembly procedure < Caution > * When disassembling the device, be sure that the power switch is turned off and all batteries are removed before starting. * Do not touch the printed circuit boards used in the device with bare hands since unclean parts are used.

  • Page 7: Removal Of Jr11-902(Jr21-902) Pcb /2 Assembly

    c) Detach of the lead wire soldered to the round of JR11-902（JR21-902） PCB (2) Assembly using the soldering iron. JR11-902 (JR21-902) PCB(2)Assembly JC109016 Cautions during assembly * Soldered to the PCB (2) Assembly to JC109016( Wire Harness / N) (See photo above) * When screwed the Main Frame Cover / R Assy(JR10-122) , make sure that there is no deformation of the wire bundle and biting.
  • Page 8 b)Remove the two screws that hold the JR11-902(JR21-902)PCB/2 Assembly. * The screw tightening torque is to be 7~9c*N*m(6.9~8.8kg*cm) ZA348(M1.7×6) (two screws ) Between the PCB Assembly are connected by the connector. Careful not to damage during removal. JR11-901(JR21-901) PCB/1 Assembly. Be removed just above the substrate.

  • Page 9: Removal Of Jr11-901(Jr20-901) Pcb /1 Assembly

    3.1.3 Removal of JR11-901(JR20-901) PCB /1 Assembly a) Detach all of the lead wires soldered to the round of JR10-901(JR20-901) PCB/1 Assembly using the soldering iron. Refer to the diagram below for the wiring. (JR109001 Wire Harness/1, JR109002 Wire Harness /2,JC109011 Wire Harness /K,JC109012 Wire Harness /L, JC109013 Wire Harness JC109011 Wire Harness /K(Brown) JC109012...
  • Page 10 c) To unlock the connector on the JR10-901(JR20-901)PCB / 1 Assy and remove the Flexible Cable of the JR10-129 LCD Assy. JR10-901(JR20-901) PCB/1 Assy Connectors Make a locking member (black part) and remove the flexible cable JR10-129 LCD Assy Flexible Cable d) To unlock the connector on the JR10-901(JR20-901)PCB / 1 Assy and remove the Flexible Cable of the JR10-123 Wire Harness / D Fold Assy.
  • Page 11 ZA348(M1.7×6) (two screws ) JR10-124 PCB Holder Part Assy (2pcs.) g) Lift and remove the JR10-901(JR20-901) PCB / 1 Assy *A little floating the substrate and shifted slightly to the left. Out of the hole in the Main Frame Cover / F Assy of the USB connector cover, and then lift to remove the PCB / 1 Assy.
  • Page 12 The projection portion of LCD Holder Stay Assembly The projection portion of LCD Holder Stay Assembly is put into the hole of a LCD Assembly. The hole of LCD Assembly The projection portion of LCD Holder Stay Ａ Expansion Assembly The projection portion of LCD Holder Stay Assembly is put into the hole of a...

  • Page 13: Removal Of Jr10-903 Pcb / 3 Assembly And Jr101210 Operation Button / 1

    3.1.4 Removal of JR10-903 PCB / 3 Assembly and JR101210 Operation Button / 1 a) Remove the screw on PCB /3 Assembly. (ZA344:M1.7×4 4pcs.) ※ The screw tightening torque is to be 7～9cNm(6.9～8.8kgcm) ZA344(M1.7×4) 4pcs JR10-903 PCB / 3 Assembly b)The side of a Main Frame Cover / Ｆ...
  • Page 14 ・When attaching a PCB / 3 Assembly, it is cautious of the four following points, and is a screw stop. 1)Wire Harness / 1 (JR109001:white), and Wire Harness / 2 (JR109002:blue) are twisted 6 times. 2)Wiring of Wire Harness / 1 , and Wire Harness / 2 lets between the ribs of a PCB / 3 Assembly of battery case pass through between two ribs of a Main Frame Cover / F Assembly.

  • Page 15: Removal Of Jr10-129 Lcd Assembly

    3.1.5 Removal of JR10-129 LCD Assembly a) LCD Assembly (JR10-129) is raised and it removes from a Main Frame Cover / F Assembly. JR10-129 LCD Assembly Cautions during assembly *Cleaning of a display cover (JR101211) in alcohol before attaching LCD Assembly (JR10-129). (Garbage has not adhered) *It checks that clean the surface of LCD Assembly (JR10-129) in alcohol and garbage has not adhered.

  • Page 16: Removal Of Jr10-611 Optics Main Frame Assembly And Jr10-613 Optics Cover / R Assembly

    3.1.6 Removal of JR10-611 Optics Main Frame Assembly and JR10-613 Optics Cover / R Assembly a) Remove the screw on Main Frame Cover / R Assembly (JR10-122). (ZA348:M1.7×6 7pcs.) *Reference. 3.1.1 Removal of JR10-122 Main Frame Cover / R Assembly. JR10-122 Main Frame Cover / R Assembly...
  • Page 17 d) Remove the 3 screws securing the JR10-611 Optics Main Frame Assembly. (ZA344 M1.7×4 2pcs. ZA348 M1.7×6 1pcs) *ZA344 : The screw tightening torque is to be 7～9cNm (6.9～8.8kgcm) *ZA348 : The screw tightening torque is to be 10～14cNm (9.8～13.7kgcm) JR10-611 Optics Main Frame Assembly ZA344(M1.7×4)

  • Page 18: Removal Of Jr10-615 Sensor Fixing Pipe Assembly

    the position of a figure. *Chamfering of a screw hole comes upwards. It lets Wire Harness ・It lets Wire Harness / F pass in a hole pass in a hole. after fixing an Optics Cover / R JR109007 Assembly by a Rotating Stopper. Wire Harness / F ZA344(M1.7×4) 1pcs...

  • Page 19: Removal Of Jr10-614 Release Button Assembly And Jr106116 Click Board / 3

    3.1.8 Removal of JR10-614 Release Button Assembly and JR106116 Click board / 3 a) An Optics Assembly / 1 (JR10-616) is removed first. Remove the 3 screws securing the JR106116 Click board / 2. (ZA378 M1.4×5 3pcs.) Be careful of loss of a spring / 2 (JC107412). *ZA378 : The screw tightening torque is to be 3～5cNm (2.9～4.9kgcm) ZA378(M1.4×5) JC107412...

  • Page 20: Methods For Device Repair, Adjustment, Etc

    3.2 Methods for Device Repair, Adjustment, etc. 3.2.1 JR10-616 Optics Assembly / 1 (lumisphere) related malfunctions. (Foundations are unit exchange). In the event of lens movement malfunctions, such as not moving vertically or catching, disassemble the relevant component while referring to the structural diagram, confirm part damage, deformation or the presence of foreign matter (dust, etc.), replace any parts that are damaged or deformed, JR10-618 ZA356 (M1.4×3)

  • Page 21: L-478 Maintenance Tool Use Procedure

    1) Turn on the PC to install the maintenance tool to (hereinafter referred to as PC). 2) Log on as necessary. 3) Insert the CD supplied by Sekonic into the PC. 4) After awhile, CD contents are displayed as shown below. Double-click “Setup.exe”.
  • Page 22 5) When the message below is displayed, click the “Accept” button. (This may not appear in certain environments) .NET Framework 2.0 is then installed. Wait awhile. (This may not appear in certain environments) 6) The following message appears. Click the “Next” button. 7) The following message appears.
  • Page 23 8) The following message appears. Click the “Next” button. 9) When installation is complete, the following message appears. Click the"Close" button. 10) Next, perform settings for updating the firmware. Select and click “Start” - “Programs” - “SEKONIC Corporation” – “L-478 Maintenance Tool”...
  • Page 24 11) The main menu for the maintenance tool appears. Click the "Firmware Update/Writing" button. 12) The following message appears. Click the "Yes (Y)" button. 13) Click the “Setting” button when the following message appears. 14) The following message appears. Click the “． ． ．” button at the “Maintenance file:”. 15) The following message appears.
  • Page 25 16) Click the "． ． ．" button at the “Application Program:”. 17) The following message appears. Select “JR1089550(01.015)A.dlf” and click the "Open" button. 18) Click the "． ． ．" button at the “Loader Program:”. 19) The following message appears. Select “JR1089550(01.015)L.dlf” and click the "Open" button.
  • Page 26 20) Click the "． ． ．" button at the “Loader Update Program:”. 21) The following message appears. Select “JR1089550(01.015)U.dlf” and click the "Open" button. 22) Click the “OK” button. 23) Click the "Exit" button.

  • Page 27: Updating The Firmware

    1) Turn on the PC with the maintenance tool installed (hereinafter referred to as PC). 2) Log on as necessary. 3) Start the maintenance tool. Select and click “ (Start)” - “Programs” - “SEKONIC Corporation” – “L-478 Maintenance Tool”. 4) The main menu for the maintenance tool appears. Click the "Firmware Update/Writing" button.
  • Page 28 5) The following message appears. Click the "Yes (Y)" button. 6) The following message appears. 7) Connect PC and L-478 to update with USB cable, and turn on the L-478. 8) The following message appears. Click the "Start" button. While updating the firmware, the following message appears. 9) When firmware update is complete, the following message appears.

  • Page 29: Button Function Test

    3) Start the maintenance tool. Select and click “ (Start)” - “Programs” - “SEKONIC Corporation” – “L-478 Maintenance Tool”. 4) Connect PC and L-478 to update with USB cable, and turn on the L-478. 5) Click the " Button & Touch panel Function Test " button.
  • Page 30 6) Since a switch input check screen is displayed, operate a button, the switch which should be checked, and a touch panel. . ContactA ,B The point of contact of a euphotic part X,Y position The newest touch-panel detection position (a touch, a release, a slide) 7) To end Button Function Test, click the “CLOSE”...

  • Page 31: Lcd Function Test

    3) Start the maintenance tool. Select and click “ (Start)” - “Programs” - “SEKONIC Corporation” – “L-478 Maintenance Tool”. 4) Connect PC and L-478 to update with USB cable, and turn on the L-478. 5) Click the " LCD Function Test " button.
  • Page 32 Display Data OFF ... LCD display is turned off. Grid Pattern ... Grid Patten is displayed on LCD. Color Pattern ... Color Pattern is displayed on LCD. Backlight Brightness OFF ... Backlight is turned off. Dimmer ... Backlight is turned on with the illumination of Dimming Dark ...

  • Page 33: Calibration Procedure

    3) Start the maintenance tool. Select and click “ (Start)” - “Programs” - “SEKONIC Corporation” – “L-478 Maintenance Tool”. 4) Connect PC and L-478 to update with USB cable, and turn on the L-478. 5) Depending on a kind of the adjustment, click the following buttons...

  • Page 34: Battery Calibration

    5.2 Battery Calibration Required tools: PC, USB cable, power supply box, dummy battery 1) Insert the dummy battery into the meter to be calibrated and connect the lead wire to the power supply box 2) Set the power supply box to 2.4V. 3) In accordance with "5.1 Calibration mode start method", it starts in battery calibration mode.

  • Page 35: Incident Light Calibration

    5.3 Incident light calibration Required tools: PC, USB cable, Calibration Box, L758 incident light use attachment, battery (Size AAA battery), master exposure meter 1) Mount the attachment to the calibration box. 2) Check and record the data of the Calibration Box. ＜Master Meter setting＞Ambient incident light, EV mode, ISO100 The lumisphere is to be completely extended.

  • Page 36: Touch Panel Calibration

    5.4 touch panel Calibration Required tools: PC, USB cable, battery (Size AAA battery), Touch pen 1) A battery is put into meter. And In accordance with "5.1 Calibration mode start method", it starts in touch panel Calibration mode. 2) Since a cross mark is displayed on the upper left, touch a center with a touch pen. 3) Since a cross mark is displayed on the lower right, touch a center with a touch pen.

  • Page 37: Errors During Calibration

    10) "TP calibration end" is displayed on middle of the screen. 11)Press the Power button (on/off switch) and turn the power supply off. 5.5 Errors during calibration Error is displayed when applied to the following conditions at the time of Battery Calibration and Incident light calibration.

  • Page 38: Confirmation Procedure

    6. Confirmation Procedure 6.1 Battery confirmation Required tools: Power supply box, dummy battery 1) Set the power supply box to the voltages indicated below, press the Power button (on/off switch) and confirm the LCD display (battery mark). Voltage Operation LCD Display Power supply ON ２．６Ｖ±０．０１Ｖ...

  • Page 39: Destination Setting

    3) Start the maintenance tool. Select and click “ (Start)” - “Programs” - “SEKONIC Corporation” – “L-478 Maintenance Tool”. 4) Connect PC and L-478 to update with USB cable, and turn on the L-478. 5) Click the " Set the destination " button.

  • Page 40: Setting Method

    7.3 Setting method (1) Japan Click JR10 (Japan) button. (2) Europe Click JR11,JR21 (EU) button. (3) U.S. Click JR12,JR22 (USA) button. (4) China Click JR1G,2G (China) button.

  • Page 41: Error Messages

    8. Error messages There is a function for detecting circuit malfunctions and, in the conditions described below, switches other than the power button are masked and error message is outputted to the LCD lower part. [Error Display Example - ROM error] Error display section Display Error Name...

  • Page 42: Repair And Adjustment Of Electronic Circuits

    9. Repair and adjustment of electronic circuits L-478 circuit board configuration Assy Name Circuit Composition Repair Method PCB / 1 Assy Power supply The basic repair method is replacement of LCD display function the defective circuit board and Touch panel function( Including t emperature confirmation of functions based on measurement) troubleshooting.

  • Page 43: Troubleshooting

    10. Troubleshooting Item Malfunction Cause Response Content No LCD display a) Battery has not been inserted Insert battery (all or a portion) b) Battery poles are reversed Insert battery properly c) Low battery capacity Replace battery d) Poor electrode spring contact Replace PCB / 3 Assy e) Electrode spring solder shear-off Re-solder...

  • Page 44: Parts List

    11. Parts List 11.1 Structural Drawing...

  • Page 45: Part Table

    12.Part Table L-478D/L-478DR Part Table L-478D L-478DR Unit Price Part Number Part Names USA China EU USA China (JPY) JR11 JR12 JR1G JR21 JR22 JR2G JR10-121 Main Frame Cover / F Assy － － － ¥990 JR20-121 Main Frame Cover / F Assy －...
  • Page 46 L-478D L-478DR Unit Price Part Number Part Names USA China EU USA China (JPY) JR11 JR12 JR1G JR21 JR22 JR2G JR109701 Label／1 for L-478D (FCC&IC) － － － ¥20 JR119701 Label／1 for L-478D (CE) － － － ¥20 JR1G9701 Label／1 for L-478D (China) －...

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L-478dL-478dr

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