Oscilloscope OS-620 DEP Equipment Hung Chang Co. Ltd., Protek; Seoul, build 1985??, 3 pictures, 31 schematics, 1 tubes, South Korea, semiconductors, Service. Oscilloscope OS-620 DEP Equipment Hung Chang Co. Ltd., Protek; Seoul, build 1985??, 3 pictures, 31 schematics, 1 tubes, South Korea, semiconductors, Service. Hi all out there. I've just come a cross a oscilloscope made by HUNG CHANG and the model is 5504. 40 Mhz oscilloscope. It was manufactured, as I understand, someware in the late 1980 (1988???) I have search around the net, without any luck. Is there someone knowing a site there I can find a service manual? Is there someone having such a service manual (with schematic), and would like me to have a copy for a small sum of money, I would be very happy. ![]() Please let me know With the best regards from Sweden Bo-Lennart Karlsson Falun N_Cook, 8:37 น. ProTek CRO - Model 6502 Covers 20, 40 and 60Mhz. ProTek brand is also known as Hung Chang - Service Manual Free Download Schematics 4 Free Service manuals, schematics, documentation, programs, electronics, hobby. (welcome to eserviceinfo.com at 17 Aug 12:32 am GMT) [news] [/news] Login: Password: Now downloading free:ProTek 6502 ProTek 6502 Oscilloscopes, digital oscilloscopes, Tektronix oscilloscopes, cathode ray ocilloscopes, pc oscilloscopes service manuals and repair information File information: File name: ProTek_CRO_6502_All_Manuals_part1.rar Size: 2929 kB Extension:.rar MD5 Checksum: 0d65f554f8b35221e9fea2 Mfg: ProTek Model: 6502 Original no||Chassis||Ordercode: Description: ProTek CRO - Model 6502 Covers 20, 40 and 60Mhz.
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