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Nikon AF-S Zoom-Nikkor ED 24-85mm f/3.5-4.5G IF Repair Manual
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Nikon AF-S Zoom-Nikkor ED 24-85mm f/3.5-4.5G IF Repair Manual

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AF-S Zoom-Nikkor ED 24-85mm f/3.5-4.5G IF
Recycled paper
Printed in Japan May 2002
REPAIR MANUAL
NIKON CORPORATION
Tokyo, Japan
Copyright ｃ 2002 by Nikon Corporation.
All Rights Reserved.
JAA78071-R.3583.A
作成承認印
TEMPORARY
配布許可印

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Summary of Contents for Nikon AF-S Zoom-Nikkor ED 24-85mm f/3.5-4.5G IF

  • Page 1 JAA78071-R.3583.A 配布許可印 作成承認印 TEMPORARY AF-S Zoom-Nikkor ED 24-85mm f/3.5-4.5G IF REPAIR MANUAL NIKON CORPORATION Tokyo, Japan Copyright ｃ 2002 by Nikon Corporation. All Rights Reserved. Recycled paper Printed in Japan May 2002...

  • Page 2: Specifications

    JAA78071-R.3583.A SPECIFICATIONS Type of lens G-type AF Zoom- Nikkor lens having built-in CPU and Nikon bayonet mount Focal length 24mm-85mm Maximum aperture f/3.5-4.5 Lens construction 15 elements in 12 groups (1 aspherical lens and 1 ED lens elements) Picture angle 84°-28°30′...
  • Page 3 JAA78071-R.3583.A DISASSEMBLING/ASSEMBLING/ADJUSTMENT １．DISASSEMBLING RUBBER RING ＃ 35, SHEET ＃ 48 ＃ 35 ＃ 48 1st AND 2nd LENS GROUP 1st lens group unit ＃ 77 ＃ 79 2nd lens group unit - L1･ AF-S 24-85/3.5-4.5G -...
  • Page 4 JAA78071-R.3583.A FILTER RING ＃ 25 ＃ 96 × 3 ＃ 25 ● Remove the three screws #96 and then   remove the filter ring #25 as rotating in the   arrow mark direction. ZOOM RING ① Remove the screw #61. ＃...
  • Page 5 JAA78071-R.3583.A Convex section Zoom ring ② Remove the zoom ring. Convex section Note： Convex section The three convex sections on the inner diameter of zoom ring are put into the ＃ 38 groove of #22. When removing the zoom ring, rotate it until the convex sections can be removed from the groove and then remove it.
  • Page 6 JAA78071-R.3583.A BAYONET MOUNT ＃ 98 × 3 ＃ 116 ＃ 78 INDEX RING, FOCUS RING M/A selector switch ① Slide the M/A selector switch unit in   the arrow mark direction to be in the   condition as shown in the left picture. - L4･...
  • Page 7 JAA78071-R.3583.A Index ring ② Remove the index ring first and then the   focus ring. ※ As shown in the left picture, pass the   M/A selector switch unit through the Focus ring   index ring. M/A selector switch MAIN PCB Distance encoder FPC ①...
  • Page 8 JAA78071-R.3583.A SWM UNIT ＃ 96 × 3 ＃ 96 × 3 SWM unit - L6･ AF-S 24-85/3.5-4.5G -...
  • Page 9 JAA78071-R.3583.A 2nd LENS GROUP HOUSING UNIT ＃ 85 × 3 ＃ 86 × 3 ＃ 84 × 3 2nd lens group housing unit Note： Hereafter, the 5th and 4th lens groups have to be removed. When the 5th and 4th lens groups have been removed, alignment must be done after assembly.
  • Page 10 JAA78071-R.3583.A 4th AND 5th LENS GROUP ＃ 96 × 3 5th lens group ＃ 96 × 3 4th lens group 3rd LENS GROUP 3rd lens group - L8･ AF-S 24-85/3.5-4.5G -...
  • Page 11 JAA78071-R.3583.A APERTURE BLADE HOUSING UNIT ＃ 83 × 3 ＃ 80 × 3 Aperture blade housing unit ZOOM ENCODER BRUSH ＃ 75 ＃ 74 - L9･ AF-S 24-85/3.5-4.5G -...
  • Page 12 JAA78071-R.3583.A ZOOM KEY ＃ 59 ＃ 60 ＃ 59 ＃ 62 1st LENS GROUP SLIDING RING ＃ 51 B7 × 3 ＃ 81 × 3 ＃ 51 - L10 ･ AF-S 24-85/3.5-4.5G -...
  • Page 13 JAA78071-R.3583.A CAM RING ＃ 50 ＃ 50 - L11 ･ AF-S 24-85/3.5-4.5G -...
  • Page 14 JAA78071-R.3583.A ２．ASSEMBLING/ADJUSTMENT ZOOM ENCODER FPC ・While the arrow mark surface (as shown  in the left picture) is regarded as reference,  adhere the zoom encoder FPC (B18) to #24. ＃ 24 Krazy glue CAM RING GROUP 3 convex places on outer diameter I-40 ＃...
  • Page 15 JAA78071-R.3583.A 1st LENS GROUP SLIDING RING ＃ 51 （B7） B7 × 3 Lock END B I-40 ＃ 81 × 3 Screw Lock I-40 ＃ 51 《Reference》 Tighten the screws #81, and B7 is inclined and so the cam ring does not operate smoothly. As shown below, set a back washer, etc.
  • Page 16 JAA78071-R.3583.A ZOOM KEY ＃ 59 Lock End B ＃ 60 ＃ 59 ＃ 62 Lock End B ADJUSTMENT OF ZOOM ENCODER BRUSH POSITION Screw Lock ＃ 75 ＃ 74 ＃ 74 ① Set the zoom encoder brush #74. Tighten the screw #75  ...
  • Page 17 JAA78071-R.3583.A APERTURE BLADE HOUSING UNIT ＃ 83 × 3 ＃ 80 × 3 Aperture blade housing unit Convex section Check：When mounting the aperture blade chamber unit, the aperture lever Aperture lever must be positioned as shown in the left picture. - L15 ･ AF-S 24-85/3.5-4.5G -...
  • Page 18 JAA78071-R.3583.A 2nd LENS GROUP HOUSING UNIT ＃ 52 ● Apply G92KA to the 3 cam grooves of #52. ＃ 56 G92KA 9 convex places on outer diameter ＃ 85 × 3 ＃ 86 × 3 ＃ 84 × 3 2nd lens group housing unit - L16 ･...
  • Page 19 JAA78071-R.3583.A MR HEAD MR head ＃ 534 MR sensor FPC ＃ 541 × 2 ① Set the MR head to be parallel with the   magnetic tape. ② Adhere the MR sensor FPC to the inside Magnetic tape   of the SWM unit. Note：Adhere the MR sensor FPC not to be sharply loosened.
  • Page 20 JAA78071-R.3583.A ＃ 96 × 3 Focus ring SWM unit Cam ring assembly ・Connection diagram Set values Oscilloscope(2ch) Oscilloscope(1ch) ５. ０Ｖ Power supply(+) １００ｍＡ Power supply(-) （GND） Power supply （＋） Self-made tool Oscilloscope （2ch） - L18 ･ AF-S 24-85/3.5-4.5G -...
  • Page 21 JAA78071-R.3583.A ・How to conduct inspection and adjustment 　① Make sure that the current and voltage of the connected rated voltage power supply are set values.    If they meet the set values, turn on the power. 　② Set the oscilloscope and drive the focus ring by hand. Note：Since the shape of waveform varies according to the driving speed of focus ring, particularly and properly set Time/Div.
  • Page 22 JAA78071-R.3583.A 　④ In the case of smaller amplitude, for adjustment, loosen MR head    the two screws #541 and then shift the MR head position    as shown in the right figure. ＃ 541 × 2 　Note：During adjustment, prevent the magnetic tape and MR  head from touching the magnetized driver bit, or the magnetic Magnetic tape  data may be damaged.
  • Page 23 JAA78071-R.3583.A ZOOM RING FIXING RING ＃ 22 Note：When mounting #22, it must not touch the MR head. If the external pressure is added to the MR head, its position is deviated to change the accuracy. ＃ 96 × 4 ＃ 22 ＃...
  • Page 24 JAA78071-R.3583.A ＃ 96 × 3 3rd LENS GROUP 3rd lens group - L22 ･ AF-S 24-85/3.5-4.5G -...
  • Page 25 JAA78071-R.3583.A 4th LENS GROUP ＃ 96 × 3 4th lens group 5th LENS GROUP ＃ 96 × 3 5th lens group Aperture lever Longest - L23 ･ AF-S 24-85/3.5-4.5G -...
  • Page 26 JAA78071-R.3583.A MAIN PCB Distance encoder FPC Zoom encoder FPC ① Set the main PCB and tighten the screw   #115. Main PCB ② Connect each FPC as shown in the left   to the connectors. ＳＷＭ－ＦＰＣ ＃ 115 MR sensor FPC INDEX RING, FOCUS RING Index ring Focus ring...
  • Page 27 JAA78071-R.3583.A M/A selector switch ● Slide the M/A selector switch in the   arrow mark direction and set it into the   index ring. Index ring BAYONET MOUNT ＃ 98 × 3 ＃ 116 ＃ 78 - L25 ･ AF-S 24-85/3.5-4.5G -...
  • Page 28 JAA78071-R.3583.A ADJUSTMENT OF APERTURE DIAMETER ① Set the tool J18004-1 and check the aperture diameter. J18004-1 　 Standard: Full aperture ② If the aperture diameter is out of the standard, adjust   the position of the aperture lever #23 by loosening the  ...
  • Page 29 JAA78071-R.3583.A whole circumference of groove I-40 ● Apply I-40 to the 6 convex places on   the outer circumference of #38. ＃ 38 Setting position ＃ 37 ● As shown in the left picture, rotate the   zoom ring #37, fit the hole position of  ...
  • Page 30 JAA78071-R.3583.A FILTER RING ＃ 25 ＃ 96 × 3 ● Adhere #65 to the filter ring #25 and   apply the oil barrier to the whole #65. ＃ 25   Apply MZ-800S to the 3 convex places   on the outer circumference of the filter  ...
  • Page 31 JAA78071-R.3583.A ADJUSTMENT (DIVISION) OF FOCUS MOVEMENT (T, W) １．Fit the infinity ( ∞ ) mark of the focus ring to the index. ２．Fix the aperture lever to make the aperture "full". ３．Read the values of the Wide and Tele sides. ４．Carry out the following calculations.
  • Page 32 JAA78071-R.3583.A PREPARATION FOR INSPECTION AND ADJUSTMENT OF MAIN PCB ● In case of replacing the main PCB, SWM unit or MR encoder unit, be sure to adjust the following items due to a   necessity on the operation. １．Items to adjust 　・Adjustment of MR duty 　・Adjustment of driving frequency and motor control ２．Equipment and tools to be required...

  • Page 33: System Configuration Diagram

    JAA78071-R.3583.A 　　　　　　　　　　　　　　　　　　 【System configuration diagram】 　By using the DC/DC converter, 1 unit of rated voltage power supply can be energize this system fully.  The following figure shows the system using the DC/DC converter for F100. The system will be explained  hereafter on the assumption that this modification has been done.
  • Page 34 JAA78071-R.3583.A ADJUSTMENT FOR MR DUTY ● In case of replacing the main PCB, SWM unit or MR encoder unit, be sure to make this adjustment. 　How to adjust 　① Make sure that the current and voltage of the connected rated voltage power supply are the set values.   ...
  • Page 35 JAA78071-R.3583.A ADJUSTMENT FOR FREQUENCY AND CONTROL ● In case of replacing the main PCB, SWM unit or MR encoder unit, be sure to make this adjustment. 　① The connection of the rated voltage power supply and measuring tools is the same as "ADJUSTMENT FOR   ...
  • Page 36 JAA78071-R.3583.A LENS OPERATION CHECK Check the lens operation by using a personal computer after assembling. ○ Check by using a personal computer 　● Check items 　　１．Operation of MR encoder 　　・Drive the lenses for scanning and check the difference in pulses at start and at end. 　　・In case the MR encoder’s MR head is not properly attached on the magnetic tape, the difference in pulses is    larger.
  • Page 37 JAA78071-R.3583.A ● Explanation of the AF-S zoom lens (New) inspection program 　 （１）Menu display NIKON AF-S ZOOM LENS(NEW)INSPECTION ／ ADJUSTMENT PROGRAM. 　 ［J18342］ １．ADJUSTMENT FOR MR DUTY. ９． ２．ADJUSTMENT FOR FREQUENCY & CONTOROL. Ａ． ３．READ AND REWRITING OF EEPROM DATA. Ｂ．...
  • Page 38 JAA78071-R.3583.A 　 （２）Display of "OPERATION OF MR ENCODER" TYPE OF LENS：　AF-S NIKKOR 24-85mm/3.5-4.5G 　　 CPU VERSION：4.00.04 OPERATION OF MR ENCODER. INSPECTING. PUSH ANY KEY TO FORWARD NEXT STEP. Note：If the MF ring is rotated during lens scanning, an error value is shown for the pulses. Don’t touch the MF ring during operation.
  • Page 39 JAA78071-R.3583.A 　The difference between the pulses before and after inspection must be within the standard. 　 Standard of difference between the pulses　：　０±１０ PULSE(S) 　 Standard of all pulses　：　２４６０±９４ PLUSE(S) TYPE OF LENS：　AF-S NIKKOR 24-85mm/3.5-4.5G 　　 CPU VERSION：4.00.04 OPERATION OF MR ENCODER. POSITION WHEN CHECK BEGINS.
  • Page 40 JAA78071-R.3583.A 　 （３）Display of "INSPECTION OF DRIVING STOP ACCURACY" TYPE OF LENS：　AF-S NIKKOR 24-85mm/3.5-4.5G 　　 CPU VERSION：4.00.04 INSPECTION OF DRIVING STOP ACCURACY. NUMBER OF LENS GO-AND-RETURN OPERATIONS. ：　5 / 5 TIME(S). ① LENS DRIVING TIMES. (DF0+DF1+DF2+DF3+DF4+DF5+DF6) ：　　 85 TIME(S). MAXIMUM PULSE.(ABSOLUTE) (DF0+DF1+DF2+DF3+DF4+DF5+DF6) ：　　　3 PULSE(S). OVER ( OR UNDER ) RUN PULE(S).
  • Page 41 JAA78071-R.3583.A 　 （４）Display of "INSPECTION OF LENS SERVO TIME" TYPE OF LENS：　AF-S NIKKOR 24-85mm/3.5-4.5G 　　 CPU VERSION：4.00.04 INSPECTION OF LENS SERVO TIME. 　SERVO AMOUNT. STANDARD. １． ［ Df1 ］ 93ms　OR LESS. ２． ［ Df2 ］ 120ms　OR LESS. ３． ［ Df3 ］ 146ms　OR LESS.
  • Page 42 JAA78071-R.3583.A 　 （５）Display of "SWITCHES AND LENS CONDITION" TYPE OF LENS：　AF-S NIKKOR 24-85mm/3.5-4.5G 　　 CPU VERSION：4.00.04 ① ② SWITCHES AND LENS CONDITION. ：FOCUSING ENCODER　ZOOMING ENCODER ： ：　 0-1　 17 　　 0　 20 ： ：　 0-2　 18-1 　　 1　 21 ： FOCUSING ENCODER ：...
  • Page 43 JAA78071-R.3583.A REAR COVER RING ＃ 105 × 2 Rear cover ring ＃ 107 × 3 RUBBER RING ＃ 35,SHEET ＃ 48 ＃ 35 ＃ 48 Screw Lock - L41 ･ AF-S 24-85/3.5-4.5G -...
  • Page 44 JAA78071-R.3583.A Tools ★：New tool RJ No. Name Note MZ-800S DRY SURF MZ-800S G92KA FLOIL G92KA I-40 GREASE I-40 EDC0021 ADHESIVE EDB0011 SCREW LOCK 1401C L-241 LOCK END J18004-1 STANDARD GAUGE FOR J18004 J19002 BACK FOCUS COLLIMATER LT-500S J18028 LENS ADAPTER FOR FOCUS TESTER J18342 AF-S ZOOM LENS (NEW)INSPECTION AND ★...
  • Page 45 JAA78071-R.3583.A Making of self-made tool ● It is necessary to make a self-made tool by using the main PCB of repair part. The self-made tool will be used   for "INSPECTION AND ADJUSTMENT FOR THE WAVEFORM OUTPUT FROM MR ENCODER".   The making procedure is shown below.
  • Page 46 JAA78071-R.3583.A 外観図 Sketch drawings - F1 ･ AF-S 24-85/3.5-4.5G -...
  • Page 47 JAA78071-R.3583.A 組立図 Structure of the Lens - F2 ･ AF-S 24-85/3.5-4.5G -...
  • Page 48 JAA78071-R.3583.A - F3 ･ AF-S 24-85/3.5-4.5G -...
  • Page 49 実体配線図 JAA78071-R.3583.A WIRING DIAGRAM ズームエンコーダー FPC Zoom encoder FPC 接点 FPC M/A スイッチ Contact FPC M/A Switch Blue Black MRセンサー付き FPC FPC with MR sensor はんだブリッジ M/A 基板 Solder bridge M/A Base plate メイン基板 Main PCB 磁気テープ Magnetic tape 絶対距離 FPC Absolute focal distance FPC (SWM 部組) (SWM unit)