SPT - Pentax ProgramPlus

Complete service manual for the Pentax Program Plus camera, covering Silimar Super Program models. This technical document features detailed internal architecture illustrations with labeled components including the diaphragm control block, shutter mechanism, printed circuit board assembly, and control elements. The manual outlines critical adjustment procedures essential for camera operation, such as auto-exposure settings, aperture control voltage calibration, LCD alignment, mirror angle positioning, and shutter curtain travel timing. It provides precise reference values including flash sync speed, AV resistor specifications, and battery voltage thresholds for functional testing. Operating instructions cover program mode functionality, manual shutter speed settings, self-timer delay features, and dedicated flash operation. A significant section addresses identification and adjustment of essential switches, including winding switch contact clearance, shutter release lever positioning, and wind-completion switch settings. The document includes comprehensive disassembly highlights with detailed sequences for accessing internal components, specifications for two CA S76 batteries, and diagrams illustrating the optical and mechanical system configuration. The basic circuit operation section explains integrated circuit functions, memory circuits for aperture and shutter control, optical encoder signals, and the timing sequence for mirror release and diaphragm closure.