Nikon NIKKOR Z 35mm f/1.4 Repair Manual

Important Information

For purposes of this Repair Manual, "Nikon" means Nikon Corporation, and all direct and indirect affiliated companies, including without limitation, Nikon Inc.

This Repair Manual is solely intended for Nikon products imported into and sold in the United States by Nikon Inc.

This Repair Manual includes technical instructions for replacing Nikon parts for the above-mentioned product (the "Product") and is intended for individuals with the knowledge, experience, and tools required to repair electronic devices. Read this entire Repair Manual first. If you are not comfortable performing the repairs as instructed in this Repair Manual, do not proceed.

Please note that, if you repair the Product on your own, Nikon will not provide customer support or assistance regarding this Repair Manual or how to repair the Product. An incorrect repair may affect the Product's limited warranty and/or cause an increase in the fee if you request service from an authorized Nikon service center after repairing the Product on your own. This Repair Manual is subject to revision without notice.

Failure to follow the repair instructions or to use appropriate Nikon parts or tools may cause fire or other safety issues and lead to personal injury or death. Failure to follow the repair instructions or to use appropriate parts or tools may damage the Product or other property, or compromise the Product's functionality or water resistance (if applicable).

NIKON SHALL NOT BE LIABLE FOR ANY DAMAGES, INJURIES OR OTHER LIABILITIES TO THE PRODUCT, OR ANY PERSON, OR PROPERTY WHICH OCCURS AS A RESULT OF REPAIR, DIAGNOSIS, MAINTENANCE, OR MODIFICATION PERFORMED BY YOU OR AN UNAUTHORIZED REPAIR PROVIDER, INCLUDING BUT NOT LIMITED TO, ANY INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES; ANY LOSS OF DATA, PRIVACY OR PROFITS; OR ANY INABILITY TO USE, OR REDUCED FUNCTIONALITY OF, THE PRODUCT.

Notations used in this Repair Manual

In this guide, important information is indicated by the following icons:

[WARNING] This indicates that improper use by ignoring the contents described herein can result in potential death or serious injury.

[CAUTION] This indicates that improper use by ignoring the contents described herein can result in potential injury or material loss.

[IMPORTANT] This symbol indicates important information in this manual.

Product identification information

The NIKKOR Z 35mm f/1.4 serial number is written on the opposite side of the Product name as illustrated below.

A diagram shows two views of the lens. The left view, labeled "Product name side", shows the front of the lens with text "Product name" pointing to the lens body. The right view, labeled "Serial number side", shows the rear of the lens with text "Serial number" pointing to a label on the lens mount. The label shows "Nikon", "4680/20-002", "L-SH:1000".

[CAUTION] The serial number may be required when contacting Nikon regarding the Product. Ensure not to lose the serial numbered part of the Product.

Read this first

• No part of this Repair Manual may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form, by any means, without Nikon's prior written permission.
• Illustrations shown in this Repair Manual may differ from the actual Product.
• Nikon is not responsible for any errors this Repair Manual may contain.
• The appearance, specifications, and capabilities of this Product and parts are subject to change without notice.

About controls for radio interference

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules and to EU EMC directive. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Consult the dealer or an experienced radio/TV technician for help.

Safety precautions

Strictly observe the guidelines contained in this Repair Manual in order to use this Product safely and prevent possible injury or property damage to you and others. Understand the contents thoroughly for correct use of the Product.

General safety precautions

Always observe the following general safety precautions.

• If you disassemble or repair the Product, it may involve risks of electric shock, Product damage, fire, and/or personal injury, or other hazards. Be careful when disassembling or repairing the Product as described in this Repair Manual.
• If you disassemble or repair the Product, the flange back or the back focus may shift, which may affect the focus when shooting. Check the focus position before disassembling or repairing the Product. Then, ensure that the focus position has not changed after re-assembling the Product. If the focus changes after re-assembling the Product, it is recommended that you disassemble and repair the Product again.
• If the Product is dropped or has been subjected to an impact due to dropping, or weight or stress has been placed on it, the camera and lens attachment parts may become deformed, which will prevent the Product from being able to be attached and will cause problems when shooting. In such cases, accurate adjustments and repair will be required and it is recommended that you contact Nikon for service repairs.
• If the Product contains a lithium-ion battery, then inappropriate use, transportation, recycling, reuse, or disposal of the lithium-ion battery may cause a fire, explosion or other damage or injury. Lithium-ion batteries should be handled in accordance with local laws, rules, and regulations. Do not heat, create holes in, disassemble, or incinerate the Product or the lithium-ion battery. Do not leave the Product or the lithium-ion battery in direct sunlight or other hot places for long periods of time, and do not charge the Product in such an environment as doing so may damage the lithium-ion battery or cause it to melt, which may cause a fire, explosion or other damage or injury.
• Do not dispose of your old Product or its lithium-ion battery (if any) and the replaced parts in your household trash or recycling bin. When disposing of the lithium-ion battery, follow your local area laws, rules, and regulations.

Repair-specific precautions and warnings

• As for the Product powered on by the power switch, before disassembling the Product, ensure that the Product is powered off and that the battery has been removed.
• As a safety measure, it is recommended that you wear protective eyewear when disassembling or reassembling the Product.
• Always check the following points before and while disassembling the Product:
• Wear an anti-static wrist strap.
• The work area is appropriately grounded, and an environment in which electrostatic discharge (ESD) has been provided with safety measures is ensured.
• Before starting work, check that you are following the general guidelines and ESD compliance steps. For details, refer to "Before disassembling the Product" on page 11.
• When removing any parts from the Product, place all the attached parts and screws away from the work area to prevent the Product and parts from being damaged or lost.

Safety policy and procedure

All Product safety issues must be managed according to the following points.

If any of the following conditions are visible, stop repairing the Product and contact Nikon's customer service at www.nikonproductsupport.com.

• There are burnt or melted components or traces on the outside of the Product, or other heat-related damage (including scorching on charging terminals or other connection terminals).
• The Product has burnt or melted parts or traces on the inside, or contains damage from overheating.
• Products that appear to have problems such as having been forcibly detached or disassembled for reasons other than misuse by the user or unauthorized repair (those that have been damaged by being subjected to an impact due to dropping, those that have evidence of tampering, or those with damage or separation caused by dilatation of the battery).
• Plastic parts with sharp edges that may pose an injury risk to the user.

When contacting Nikon's customer service, please have the following information ready to enable Nikon to check the situation:

• Model, model number, and serial number of the affected Nikon Product and any third-party product used together with the Nikon Product, if any.
• Description of the damage found.
• Clear photos that show the damage.

Disclaimer of warranties and limitation of damages

All the information, descriptions, materials, and products provided on or in connection with this Repair Manual are provided by Nikon on an "as-is basis" and "in the form that can only be provided if possible" unless otherwise expressly specified in writing by Nikon. With respect to the information, descriptions, materials, and products included in this Repair Manual, that accompany this Repair Manual, or that are provided to users in some way, Nikon makes no, and hereby disclaims all, representations, unless expressly specified in writing. You hereby expressly agree that your use of the information, descriptions, materials, and products included in this Repair Manual or that accompany this Repair Manual are the user's sole responsibility. If you are not in agreement with the foregoing, do not use this Repair Manual.

To the maximum extent allowed by applicable law, Nikon disclaims all warranties, express or implied. This includes the implied warranties of merchantability and fitness for a particular purpose, but shall not be limited to these. To the maximum extent allowed by applicable law, Nikon disclaims and shall not be responsible for any damage that may arise through the use of any information, descriptions, materials, or products obtained from this Repair Manual or in connection with this Repair Manual. This includes direct, indirect, incidental, special, consequential, and/or punitive damages, but shall not be limited to these.

SOME STATES DO NOT ALLOW (A) LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS OR (B) THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU.

Notification

Nikon and its suppliers may have patents, patent applications, trademarks, copyrights, and/or other intellectual property and/or proprietary rights regarding the subject matter in this Repair Manual (collectively, "Intellectual Property Rights"). By making this Repair Manual available to you, Nikon does not grant any Intellectual Property Rights and does not imply a license. When the user uses the Intellectual Property Rights with permission, it is only subject to Nikon's and its suppliers' Intellectual Property Rights.

This Repair Manual and the information contained herein are subject to change without notice.

©2024 Nikon Corporation. All rights reserved.

Nikon service tools

• Cleaning stick (EIZ0163)
• Lubricant (PL-1016EL)
• Lubricant (LEN317A)
• Lubricant (FT-900P)
• Lubricant (OS-20P)
• Lubricant (FG-3X)
• Lubricant (MDF-225P)

Standard service tools

• Electrostatic discharge (ESD) mat
• Anti-ESD wrist strap (1 MΩ resistance)
• Anti-ESD gloves
• Protective eyewear
• Isopropyl alcohol
• Isopropyl alcohol dispenser bottle
• Anti-ESD tweezers
• Phillips screwdriver (2.0 mm)
• Small flathead screwdriver
• Small pry bar (plastic)
• Torque screwdriver (Use a product with a torque range of 0.06 N·m to 0.18 N·m.)
• Brush for lubricant
• Front cap (LC-67B)
• Rear cap (LF-N1)
• Glue (LOCTITE 263)

Before disassembling the Product

[IMPORTANT]

• As for the Product powered on by the power switch, before disassembling the Product, be sure to check that the Product is powered off and that the battery has been removed.
• Check that all the lenses, camera, and accessories attached to the Product are removed before disassembling the Product.
• Always cover the workbench's surface with a soft, non-scratch material suitable for ESD protection.
• Frequently clean the surfaces you use to work and keep them free of debris/abrasive particles.
• Always follow the work steps described in each process section.

During the repairing

[IMPORTANT]

• If there is this kind of indication, apply the specified grease or adhesive by a small brush. Example: MDF-1173S, AX-125
• If there is a specified torque, use an appropriate torque driver for tightening screw. Example: 0.1 N·m
• If the parts are associated with circled numbers, please work in that numerical order. Example: ① ② ③ means to work in the order of ① to ③.
• Do not pinch FPCs or cords during reassembly.
• Be careful not to damage or lose parts.

Reference Pages for Replacement Procedures by Major Parts

MF RING UNIT replacement procedure

MOUNT replacement procedure

CONTROL RING UNIT replacement procedure

LENS UNIT replacement procedure

FRONT LABEL UNIT

A diagram shows the FRONT LABEL UNIT, a cyan-colored ring, being separated from the main lens body. Text indicates to insert a small flathead screwdriver or plastic pry bar into the gap between the edges of the FRONT LABEL UNIT to lift it. If difficult, isopropyl alcohol can be applied into the gap around the outer periphery.

FILTER RING

A diagram shows the FILTER RING, a cyan-colored ring, being removed from the lens body. Four SCREWS (9747-1750-07) are shown being unscrewed.

MF RUBBER RING

A diagram shows the MF RUBBER RING, a cyan-colored ring, being removed from the lens body. A cleaning stick (EIZ0163) is shown near the lens.

MF RING UNIT

A diagram shows the MF RING UNIT, a cyan-colored ring, being removed. Two WASHERs are shown, each indicated as containing a WASHER with specific item codes (JMA11251-1510, JMA11251-1511, JMA11251-1512).

REAR COVER RING

A diagram shows the REAR COVER RING, a cyan-colored ring, being removed from the lens body. Three SCREWS (9747-1435-07) and one SCREW (6A-14030FA) are shown being removed.

MOUNT

A diagram shows the MOUNT, a cyan-colored ring, being removed. Four SCREWS (JMA72251-1496) and a WASHER are shown. A CONTACT UNIT (JMA11251-0640) is also depicted being detached.

Another diagram shows the MOUNT (127EC) with a WATERPROOF RUBBER (127FD) ring being removed. A SCREW (1K120-012) is shown.

NAME RING UNIT

A diagram shows the NAME RING UNIT, a cyan-colored ring, being removed from the lens body.

MAIN PCB UNIT

A diagram shows the MAIN PCB UNIT being removed from the lens body. Two SCREWS (9747-1435-07) are shown being removed.

CONTROL RING UNIT

A diagram shows the CONTROL RING UNIT, a cyan-colored ring, being removed. Two WASHERs are shown, each indicated as containing a WASHER with specific item codes (JMA11251-1510, JMA11251-1511, JMA11251-1512).

MIDDLE RING UNIT

A diagram shows the MIDDLE RING UNIT being separated from the lens body. Three SCREWS (9761-1435-04) are shown being removed.

MIDDLE RING UNIT

A diagram shows the MIDDLE RING UNIT being reattached. Three SCREWS (9761-1435-04) are shown being tightened to 0.1 N·m. Inset diagrams show lubricants FT-900P, OS-20P, and MDF-225P being applied. Another inset shows the "Reference position for attachment".

CONTROL RING UNIT

A diagram shows the CONTROL RING UNIT being assembled with WASHERs and lubricants. The diagram indicates applying lubricants in order from top: OS-20P, FT-900P, FG-3X. Two WASHERs are shown, with a table referencing item codes to WASHERs A (thinnest), B, and C (thickest).

* Thickness increases in order from A (thinnest) to C (thickest).

• If you replace the CONTROL RING UNIT, you will need to adjust the WASHER size. To adjust the operation after assembling, use intermediate-size WASHER (JMA11251-1511) when assembling.
• When replacing the WASHER, select one that does not cause backlash.
• There is 1 or n item(s) in this part.

MAIN PCB UNIT

A diagram shows the MAIN PCB UNIT being reattached. Two SCREWS (9747-1435-07) are shown being tightened to 0.1 N·m.

NAME RING UNIT

A diagram shows the NAME RING UNIT being reattached. Lubricants OS-20P, FT-900P, and FG-3X are indicated to be applied in order from top.

MOUNT

A diagram shows the MOUNT (127EC) being reassembled. Lubricants PL-1016EL and LEN317A are shown applied to the mount. A WATERPROOF RUBBER (127FD) is shown with a SCREW (1K120-012) being inserted. LOCTITE 263 is indicated to be applied to the point of the screw. A diagram shows the "Direction for mounting".

Another diagram shows the MOUNT (127EC) with a WASHER, being attached to the lens body. Four SCREWS (JMA72251-1496) are shown being tightened to 0.18 N·m. A note advises to rotate the CONTROL RING UNIT to check its operating characteristics. If the operation is heavy, refer to page 20 and replace the washer with a thinner one. If the operation is light, refer to page 20 and replace the washer with a thicker one.

REAR COVER RING

A diagram shows the REAR COVER RING being reattached. Three SCREWS (9747-1435-07) are shown being tightened to 0.06 N·m.

MF RING UNIT

A diagram shows the MF RING UNIT being assembled with WASHERs and lubricants. The diagram indicates applying lubricants FT-900P, MDF-225P, FG-3X, and OS-20P. Two WASHERs are shown, with a table referencing item codes to WASHERs A (thinnest), B, and C (thickest).

* Thickness increases in order from A (thinnest) to C (thickest).

• If you replace the MF RING UNIT, you will need to adjust the WASHER size. To adjust the operation after assembling, use intermediate-size WASHER (JMA11251-1511) when assembling.
• When replacing the WASHER, select one that does not cause backlash.
• There is 1 or n item(s) in this part.

MF RUBBER RING

A diagram shows the MF RUBBER RING being reattached to the lens body.

FILTER RING

A diagram shows the FILTER RING being reattached. Four SCREWS (9747-1750-07) are shown being tightened to 0.18 N·m. Inset diagrams show lubricants OS-20P and MDF-225P being applied. A note advises to rotate the MF ring unit to check its operating characteristics. If the operation is heavy, refer to page 24 and replace the washer with a thinner one. If the operation is light, refer to page 24 and replace the washer with a thicker one.

FRONT LABEL UNIT

A diagram shows the FRONT LABEL UNIT being reattached. Text indicates that the letters "NIKKOR" are on the index side.

[IMPORTANT] Perform the following inspection after repairs involving disassembly and assembly:

• AF Accuracy Inspection Process (P. 27)
• Control Ring Inspection Process (P. 31)
• MF Ring Inspection Process (P. 33)

Tools and parts required:

• Your mirrorless camera
• Tripod
• Indoor lighting (Use the flickerless light.)
• Commercially available focus chart that can measure the focus position

Focus charts can be purchased at stores that sell camera-related products or online stores that sell camera-related products. Nikon hereby disclaims all responsibility and liability for any focus charts or other items purchased from third party retailers.

Camera settings

The AF accuracy is inspected using your own mirrorless camera, so please make sure that there are no abnormalities in the operation of your camera before starting the inspection.

When performing an inspection, change the camera settings as shown below. Be sure to turn OFF "AF Fine Adjustment" as it affects the inspection results.

Set the camera as follows. For details on the camera settings, refer to the instruction manual of the camera.

Camera settings

• Shooting mode: A mode
• Image quality mode: FINE
• Image size: L
• Aperture: Full open
• ISO sensitivity: 100 to 800 (Automatic sensitivity control OFF)
• White balance: Auto (White priority)
• Picture control: SD (All parameters 0, or clarity 1 or 2)
• AF mode: AF-S
• AF area: Single point AF
• Active D-Lighting: OFF
• Diffraction correction: ON
• Automatic distortion correction: ON
• Vignette control: Standard
• Body VR: OFF
• Exposure delay mode: one to two seconds
• AF fine adjustment: OFF

Shooting environment

Install the camera/lens and chart, referring to the figure below. Shoot in a location that meets the following requirements:

• Place that is not affected by vibrations
• Place where the brightness can be ensured under indoor lighting. (Please use flickerless lights.)

A diagram illustrates the shooting environment setup: a tripod supports a camera with the lens attached, aimed at a focus chart placed on a desk. The chart is labeled.

The measurement method with a focus chart differs depending on the focus chart you use, so please check the instruction manual for the focus chart you are using.

AF accuracy inspection

Follow the steps below to inspect the AF accuracy.

Inspection procedure

1 Adjust the camera position

1. Adjust the shooting distance so that the entire focus chart is displayed on the screen as shown in the image below.
2. Adjust the position so that the AF area in the center of the camera is aligned with the center of the target chart.

A diagram shows a camera's display screen. It shows a focus chart (a stepped wedge) within a red box labeled "AF area in the center". The text "Target chart" points to the focus chart itself.

2 Check the focus

1. Turn the lens control ring clockwise viewed from the camera to change the focus to the infinity position.
2. Press the release button halfway and check that the chart is in focus.

A diagram shows two camera display screens side-by-side. The left screen shows the focus chart with a red box indicating the AF area, and the chart appears slightly out of focus. An arrow points to the right screen, which shows the same focus chart with a green box indicating the AF area, and the chart appears sharp and in focus.

3 Shoot the chart

1. Press the release button to shoot the target chart.
2. When checking before disassembling, check the inside of the red frame in the image, and record the focus position.
3. When checking after disassembling, confirm that there is no difference from the focus position recorded before disassembling.

A diagram shows a camera's display screen with a focus chart inside a red frame. Text indicates that the focus position should be recorded.

[CAUTION] If the focus position is significantly different from what it was before disassembling, it is recommended that you disassemble and repair the Product again.

Tools and parts required:

• Your mirrorless camera

Control ring inspection

Follow the steps below to perform a control ring inspection.

Inspection procedure

1 Check the functions assigned to the control ring

1. From the camera MENU, select [Custom Menu] - [f Operation] - [f2 Custom controls(shooting)].
2. The setting names may differ depending on the camera model.
3. Check the functions assigned to the control ring. In the example below, confirm that "Aperture" is set.

A diagram shows a camera's "Custom controls (shooting)" menu screen. The "Lens control ring" is set to "Aperture". Other options like Focus (M/A), Exposure compensation, and ISO sensitivity are listed but not selected.

The setting names may differ depending on the camera model.

If no function is set on the control ring, set one of the following functions:

A diagram shows the "f2 Lens control ring" menu with options: M/A Focus (M/A), Aperture, Exposure compensation, ISO sensitivity, None. "Aperture" is highlighted.

The setting names may differ depending on the camera model.

2 Check the operation of the control ring

1. Rotate the lens control ring and check whether the assigned function is working.
2. Focus (M/A): Check that the focus operation is performed.
3. Aperture: Set the exposure mode to A mode or M mode, and check that the aperture changes.
4. Exposure compensation: Check that the exposure compensation changes.
5. ISO sensitivity: Check that the ISO sensitivity changes.

Tools and parts required:

• Your mirrorless camera

MF ring inspection

Inspection procedure

1 Attach the lens to your mirrorless camera.

2 Rotate the MF ring and check that the focus function works.

While watching the camera monitor, check that focus positions change.

A diagram shows two camera display screens side-by-side. The left screen shows a focus chart with a red box indicating the AF area, and the chart appears slightly out of focus. An arrow points to the right screen, which shows the same focus chart with a green box indicating the AF area, and the chart appears sharp and in focus, demonstrating the MF ring's function.