SPT - Pentax ProgramPlus

Complete service manual for the Pentax Program Plus camera, covering Silimar Super Program models. This workshop manual delivers detailed internal architecture with fully labeled component diagrams including the diaphragm control block, shutter mechanism, printed circuit board assembly, and control elements. The repair guide outlines critical adjustment procedures: auto-exposure calibration, aperture control voltage tuning, LCD alignment, mirror angle positioning, and shutter curtain travel timing. You'll find precise reference values for flash sync speed, AV resistor specifications, and battery voltage thresholds needed for functional testing and troubleshooting. The operating instructions section covers program mode functionality, manual shutter speed selection, self-timer operation, and flash synchronization. A substantial portion addresses identification and adjustment of essential switches—winding switch contact clearance, shutter release lever positioning, and wind-completion switch configuration—critical knowledge for maintaining proper mechanical response. The disassembly sequences provide step-by-step access to internal components with clear technical diagrams of the optical and mechanical systems. Battery specifications detail the two CA S76 cells required for operation. The basic circuit operation section explains integrated circuit functions, memory circuits governing aperture and shutter control, optical encoder signal interpretation, and the precise timing sequence for mirror release and diaphragm closure. This manual serves technicians and experienced users performing maintenance, calibration, or repair work on this model.