DSLR Camera Maintenance Course

Lesson 1 • Shutter Mechanism and Curtains

Details focal-plane shutter construction, curtain materials, and timing principles. This knowledge underpins shutter inspection and replacement procedures.

Lesson 2 • Optical Viewfinder and Mirror System

Examines the pentaprism, focusing screen, and reflex mirror assembly. Understanding this system is essential before any optical alignment work.

Lesson 3 • Lens Mount and Electrical Contacts

Covers bayonet mount mechanics, contact pin arrays, and communication protocols between body and lens. Proper contact care prevents autofocus and metering failures.

Lesson 4 • Image Sensor and Filter Stack

Introduces sensor types, the low-pass filter, and the anti-aliasing stack. Sensor fragility and contamination risks are emphasised for safe handling.

Lesson 1 • Electrostatic Discharge Prevention

Explains how ESD damages sensor and circuit board components and how to neutralise charge before contact. This section is prerequisite to any internal disassembly.

Lesson 2 • Workspace Setup and Contamination Control

Defines clean-room principles adapted for field and studio maintenance environments. Proper setup reduces dust ingress and electrostatic damage risk.

Lesson 3 • Essential Hand Tools for Camera Work

Identifies precision screwdrivers, spanner wrenches, and opening tools specific to camera repair. Correct tool selection prevents fastener and housing damage.

Lesson 4 • Chemical Safety and Solvent Handling

Reviews safe use, storage, and disposal of cleaning solvents, lubricants, and adhesives used in camera maintenance. Prevents chemical damage to coatings and plastics.

Lesson 1 • Body Shell Cleaning Techniques

Covers safe removal of grime, oils, and residue from rubber grips, plastic panels, and metal surfaces. Correct technique preserves coatings and markings.

Lesson 2 • LCD Screen and Viewfinder Eyepiece Care

Details safe cleaning of LCD panels, protective glass, and rubber eyecups. Improper technique causes micro-scratches and anti-reflective coating damage.

Lesson 3 • Port, Button, and Dial Cleaning

Addresses cleaning around recessed controls, port covers, and mode dials where debris accumulates. Thorough cleaning here prevents control sticking and corrosion.

Lesson 1 • Filter Thread and Barrel Maintenance

Addresses cleaning and lubricating filter threads, zoom barrels, and focus rings. Smooth mechanical operation depends on clean, properly lubricated barrel components.

Lesson 2 • Aperture Blade Inspection and Cleaning

Explains safe access to aperture blades and removal of oil contamination without displacing blades. Oil-free blades ensure accurate exposure control.

Lesson 3 • Lens Contamination Assessment

Teaches identification of dust, fungus, haze, and oil on aperture blades through visual inspection. Accurate diagnosis determines the correct cleaning approach.

Lesson 4 • Internal Element Cleaning Boundaries

Defines the limits of field-serviceable internal cleaning versus factory-level disassembly. Knowing these boundaries prevents irreversible optical misalignment.

Lesson 1 • Dry Cleaning Techniques

Teaches blower and brush methods for removing loose particles without contacting the sensor surface. Dry cleaning is always attempted before wet cleaning.

Lesson 2 • Sensor Cleaning Risk Management

Identifies common errors—excess fluid, swab reuse, and static discharge—and their consequences. Risk awareness reduces the rate of cleaning-induced sensor damage.

Lesson 3 • Dust Detection Methods

Covers test-shot technique, aperture settings, and software analysis to locate sensor dust precisely. Accurate mapping reduces unnecessary cleaning passes.

Lesson 4 • Mirror Lock-Up and Power Management

Explains using mirror lock-up mode and managing battery power during sensor access. Power failure mid-clean can cause shutter closure and sensor damage.

Lesson 1 • Shutter Mechanism Inspection

Covers visual and functional shutter inspection, including curtain travel, blade condition, and timing consistency. Early defect detection prevents catastrophic shutter failure.

Lesson 2 • Lubrication Selection and Application

Identifies lubricant types—grease, oil, and dry lubricant—and their correct application points inside a DSLR. Wrong lubricant migrates to optics and causes haze.

Lesson 3 • Focus Screen Removal and Reinstallation

Teaches safe removal, cleaning, and reinstallation of interchangeable focusing screens. Incorrect reinstallation causes inaccurate focus confirmation.

Lesson 4 • Autofocus Rail and Drive System Check

Covers inspection and lubrication of AF drive gears, rails, and screw-drive mechanisms in body and lens. Smooth AF operation depends on clean, lubricated drive components.

Lesson 1 • Memory Card Slot Inspection and Cleaning

Addresses bent pins, debris in card slots, and contact cleaning procedures. Damaged card slots cause data loss and card read errors in the field.

Lesson 2 • External Port and Connector Care

Covers USB, HDMI, flash sync, and remote ports—cleaning contacts and inspecting for corrosion. Functional ports are critical for tethered shooting and flash synchronisation.

Lesson 3 • Firmware Update Procedures

Explains safe firmware download, verification, and installation to maintain camera performance and compatibility. Incorrect update procedures can render a camera inoperable.

Lesson 4 • Battery Compartment and Contact Maintenance

Covers cleaning oxidised battery contacts, testing spring tension, and inspecting compartment seals. Poor contact maintenance is the leading cause of intermittent power faults.

Lesson 1 • Exposure and Metering Verification

Teaches using grey cards and incident meters to verify metering accuracy after maintenance. Metering drift indicates sensor or circuit issues requiring further investigation.

Lesson 2 • Full Functional Test Sequence

Defines a standardised checklist covering all camera modes, controls, and outputs after maintenance. Systematic testing ensures no fault is overlooked before returning the camera.

Lesson 3 • Maintenance Logging and Record Keeping

Establishes standards for documenting service actions, parts used, calibration values, and next-service intervals. Accurate records support warranty claims and resale value.

Lesson 4 • Autofocus Micro-Adjustment Calibration

Covers using focus charts and in-camera AF fine-tune to correct front and back focus errors. Accurate AF calibration is the final step after any mirror or lens mount work.