|Sequential Circuits 420 TOM Drum|
|Category||Professional music equipment|
|Description||Digital Drum Machine|
These manuals are available for the above equipment:
|Sequential Circuits -- 420 TOM -- Service Manual|
|Manual Type||Service Manual|
|Size||5.99 Mbytes (6278393 Bytes)|
|Date||01 July 1985|
|Quality||Scanned document, all readable.|
|Upload date||07 August 2018|
|Downloads||87 since 07 August 2018|
SYSTEM/CHASSIS 0.1 Abnormal Power-on Indications 0.1 Updates 0-1 TOM 1_5 Software Update 0.1 Cassette Interface 0.1 Memory Loss 0.1 Figure 0.1 Location of Reset Modification 0.2 Figure 0.2 Original ROM Decoding Circuit 0.3 Figure 0.3 Original Reset Circuit 0A Expansion 0.5 Mechanical Disassembly/Reassembly 0.5 Functional Description 0.6 Main Operating System 0.6 Sound-Generating System 0.6 Hardware Description 0.7 Non-designated Components 0.7 1 PCBS 1 AND 2 1.1 Schematics for PCBs 1 and 2 Sheet A 1-3 Sheet B 1.^ Sheet C 1-5 Designator map, PCB 1 1.6 Hardware Description 1.7 Integrated Circuits 1.7 Other Components 1.17 Non-designated Components 1.19
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