Target audience:
Professional photographers, camera repair technicians, and advanced enthusiasts
Market segment:
Flagship professional SLR of the Pentax line
Key advantage:
Extremely durable professional body with unique TTL aythenic (iodine-based) light metering off the film plane during exposure
Metering:
Integrated direct TTL metering measuring light off the film plane during the actual exposure
Sealing:
Extensive weather and dust sealing, one of the most tightly sealed SLRs of its era
Shutter:
Electromagnetically controlled horizontal cloth focal-plane shutter
Exposure modes:
Manual and aperture-priority auto exposure with long-exposure capability to 125 seconds in auto
Manual type:
Service repair workshop manual
File format:
Searchable PDF (zoomable, printable, bookmarked chapters)
Delivery method:
Instant digital download - no shipping, no waiting
Access:
Download again anytime after purchase
Compatibility:
Windows PC, Mac, tablets, and smartphones
Page count:
N/A - not specified in the available description
General information:
Safety warnings and maintenance schedules
Shutter assembly:
Complete shutter mechanism disassembly, inspection, and adjustment
Metering system:
TTL light metering circuit diagnostics and calibration
Electrical system:
Wiring diagnostics, testing, and repair procedures
Film transport:
Wind and rewind mechanism service
Mirror and viewfinder:
Mirror box and viewfinder assembly service
Exposure control:
Aperture-priority auto exposure circuitry and manual controls
Lens mount:
K mount bayonet interface inspection and adjustment
Overhaul:
Complete body disassembly, inspection, and rebuild
Troubleshooting:
Symptom-based diagnostics with flowcharts and diagnostic trees
Electrical testing:
Multimeter testing procedures and component function verification
Wear limits:
Allowable tolerances and wear limit inspections for all components
Assembly guidance:
Step-by-step procedural diagrams with tool usage illustrations
Technical Depth and Parts
Torque values:
All factory torque specs and bolt specifications included
Specifications:
All factory specifications, tolerances, and wear limits included
Special tools:
Special service tool numbers with illustrations
Parts diagrams:
Exploded-view diagrams with OEM part numbers
Wiring diagrams:
Detailed electrical schematics and circuit diagrams
Component identification:
Location guides for all internal components
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Metering technology:
Direct TTL metering off the film plane during exposure (unique LX system)
Exposure control:
Electromagnetically controlled shutter with aperture-priority auto mode
Long exposure:
Automatic exposure times up to approximately 125 seconds
Viewfinder:
Interchangeable focus screens with bright viewfinder image
Driver assistance:
N/A - not applicable to a camera product
Service intervals:
Maintenance schedules included in manual
Light seals:
Common wear item - foam light seals degrade and require replacement
Shutter:
Cloth shutter curtains are a known long-term wear item
Metering calibration:
TTL metering circuit verification and adjustment procedures included
Lubrication:
Factory lubrication points and specifications covered
Manufacturer:
Asahi Optical Co. (Pentax), Japan
Model introduction:
Launched in 1980 as Pentax's professional flagship SLR
Production span:
Produced from 1980 to 2001, one of the longest-produced professional SLRs
Position in line:
Top model above the Pentax MX and ME series
Professional reputation:
Regarded as one of the most rugged and weather-sealed 35mm SLRs of its era
Nikon/Canon era comparison:
Held a loyal professional following against Japanese professional SLR rivals in the 1980s
Formal awards:
N/A - no formal award records specified
