https://peertube.dngr.us/videos/watch/3f1cd1bf-f66f-402d-84a7-75101c661c0b Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Help us preserve, scan and post more rare and endangered films! Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com This 1970s IBM technical training film presents a detailed examination of maintenance and troubleshooting routines for the 3505 / 3525 card reader subsystems, focusing on how they are designed for quick repairs and efficient maintenance. The film emphasizes the importance of using the improved documentation, maintenance libraries, and diagnostic tools built into the machine to help service technicians quickly identify and resolve issues. The course is designed to teach how to fix the machine rather than focusing on how it works. The film outlines the use of a maintenance strategy that enables faster, more effective service. (Note: The IBM 3525/3505 is a multi-function punched card device, capable of reading, punching, and printing on punched cards. The 3505/3525 units attach to a System/370 Model 135 and up, or to a System/360 Model 195.) 00:00: Presenter discussing the "Divide operation" in a cycle, explaining how certain steps and cycles in the process work together to store the quotient and handle arithmetic operations. 0:36: How to address and fix issues, particularly focusing on the challenge of learning machine operations and troubleshooting. There is a discussion about how the 355B and 3525 subsystems are designed for quicker repairs, with an emphasis on hardware improvements and an efficient maintenance system. 1:44: The course's focus shifts to teaching repair strategies instead of how the machine works. Introduces the concept of using improved documentation, a maintenance library manual, and a hardware system that helps technicians act quickly on errors. The system has been designed with easy access to machine parts for repairs. 3:02: A customer calls to report a "tin log" problem, and the service technician (CE) is dispatched. 4:09:The technician prepares for the service call 5:31: The CE reviews the steps involved in handling the service call, explaining how using the machine's logging system and diagnostic tools helps to quickly identify and isolate the issue. The maintenance manual's effectiveness is discussed, highlighting the time-saving measures such as automatic error isolation. 7:25:Machine's design enables quick part replacement and system repairs. The CE uses built-in tools such as the vacuum cleaner to clean the machine after service. 9:03: The course's training strategy: emphasis is on learning how to fix the machine through troubleshooting exercises rather than simply learning about the machine's operation. Technicians will troubleshoot and learn through simulated problems, reinforcing the hands-on approach. 10:14: Course methodology: technicians will be encouraged to engage with simulated "bugs" to build their troubleshooting skills. 11:18: A humorous anecdote about a CE tackling a problem on a machine they weren't trained on 12:03: The 355B card reader subsystem operation from loading cards to troubleshooting procedures. 13:22: Walkthrough of card reader's mechanism: pre-read, read, and post-read stations. Vacuum system and eject magnets. 14:10: How cards are processed through different stations, with a focus on feeding mechanisms and the role of various magnets and rolls in the process. 15:05: The card reader’s subsystem, features and parts involved in card handling. How parts like the control unit and error logging are designed to help technicians. 16:03: 3525 card punch machine.Operation of the punch, similar to the 2540 machine, detailing card loading, punch operations, and optional features. 17:12:Punch unit’s operation is covered 18:02: Description of the print feature and how the pre-print and print stations operate. The importance of alignment and the role of the print chain cartridge. 19:12: Final details about the punch unit, how the punch unit die works and the built-in vacuum cleaner for cleaning the machine after use. The CE panel is also highlighted 20:00: Summarizing the key points and end Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. 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