baktra Posted April 26, 2017 Share Posted April 26, 2017 Hello, In an effort to create a schematic of Rabmit Turbo Tape board, I would like to ask if someone can help to identify Integrated Circuit located on the RAMBIT TURBO TAPE Board. 1. The resistance values are obivous from the color codes 2. The IC is uknown. I would suspect 74LS03, but can anyone confirm or deny that, please? 3. What is the capacity of the capacitors? Thank you for your help! Quote Link to comment Share on other sites More sharing options...
baktra Posted April 28, 2017 Author Share Posted April 28, 2017 To explain, why I cannot identify the parts mysfelf - I do not have a RAMBIT TURBO TAPE board at hand. This photo comes from ftp.pigwa.net Therefore my hope is someone has the board and will be kind enough to identify. Quote Link to comment Share on other sites More sharing options...
Fred_M Posted April 28, 2017 Share Posted April 28, 2017 Hi Baktra, nice to see you here and at Atari Sector I am no technical expert (just a collector) but I made a picture of mine. You can read all the markings from the picture. If you want to see more, just ask Also attached is the manual of the Rambit upgrade. Regards! Fred rambit_manual_AtariAge.pdf 2 Quote Link to comment Share on other sites More sharing options...
baktra Posted April 28, 2017 Author Share Posted April 28, 2017 (edited) Wow. Thank you very much, Fred_M. CD40106BE - Still sold CMOS flip-flop BC182 - Still sold transistor - NPN. S02A I04K - I don't know what that could be. Anyone knows? If it is not much trouble, can you photograph the spots (from reasonable distance) where wires from the RTT board are connected to the datarecorder's main PCB? Baker will be very happy. Edited April 28, 2017 by baktra 1 Quote Link to comment Share on other sites More sharing options...
Fred_M Posted April 28, 2017 Share Posted April 28, 2017 (edited) Wow. Thank you very much, Fred_M. CD40106BE - Still sold CMOS flip-flop BC182 - Still sold transistor - NPN. S02A I04K - I don't know what that could be. Anyone knows? If it is not much trouble, can you photograph the spots (from reasonable distance) where wires from the RTT board are connected to the datarecorder's main PCB? Baker will be very happy. Hi Baktra, Yes I can make some shots, but in the attached manual there are 3 schematics for the two different 1010 models and the XC12. I scanned the manual and the schematics myself. This is not a copy of the manual you found online The "s" in S02A I04k looks like some kind of trademark. It is a round dot with a "s" in it. I will make some extra pictures and post them here in an hour or so Edited April 28, 2017 by Fred_M Quote Link to comment Share on other sites More sharing options...
Fred_M Posted April 28, 2017 Share Posted April 28, 2017 Okay, more pictures First picture: my 1010 Hong Kong model. According to the manual and schematics another capacitor must be added to the PCB of the 1010. Second picture: the added capacitor Third picture: the "S02A I04k" part. Good luck! and see you at the Sector 2 Quote Link to comment Share on other sites More sharing options...
adam242 Posted April 28, 2017 Share Posted April 28, 2017 (edited) The reddish component is a simple mylar capacitor. The "104k" marking is the code for the capacitance value, .1uF in this case. http://www.jameco.com/z/MY-1--1-uF-100-Volt-Mylar-Capacitor_26956.html Edited April 28, 2017 by adam242 3 Quote Link to comment Share on other sites More sharing options...
baktra Posted April 28, 2017 Author Share Posted April 28, 2017 This is perfect! Heh, I thought it states I04K, and it was 104K. 1 Quote Link to comment Share on other sites More sharing options...
Fred_M Posted April 28, 2017 Share Posted April 28, 2017 (edited) This is perfect! Heh, I thought it states I04K, and it was 104K. I thought so too Because the "1" looked as a different font I assumed it was an "I" and not a "1" Luckily a picture helps Edited April 28, 2017 by Fred_M Quote Link to comment Share on other sites More sharing options...
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