Onkyo TA-2058 Service Manual covers following topics:
- How to repair Onkyo TA-2058 Stereo Cassette Tape Deck?
- How to maintain and fix your Onkyo TA-2058 Stereo Cassette Tape Deck?
- Specifications, Service procedures, Mechanism operation, Alignment procedures,
- Exploded view, Mechanism-exploded view, Printed circuit board view,
- Schematic diagram, Printed circuit board-parts list, Block diagram,
- Circuit description, Component location, Packing procedures
Onkyo TA-2058 Service Manual(Book ID=38643 Added on August 26, 2012) Onkyo TA-2058 Service Manual covers Repair Guide, Troubleshooting, Parts List, Exploded diagram, Wiring Diagram, Schematics, Assembly and dissembly of equipment. Using Onkyo TA-2058 Service Manual, you will be able to get answer of common questions regarding equipment like:
- How to open and clean Onkyo TA-2058 Serv?
- How to fix broken Onkyo TA-2058 Serv?
- How to solve various error codes?
- How to repair broken parts and various part numbers?
- What is the meaning of various buttons and indicators on device?
- How to carry out alignment and routine servicing of your device?
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Below is example of common troubleshooting you can do using this service manual
Circuit Description of the Onkyo TA-2058
DA Converter and Data Setting Method
The D/A converter circuitry is outlined in Figure 5, and the logic diagram of the 4024BP 7-stage binary counter in Figure 6. The 4024BP counter is counted up each time a negative input pulse is applied to the clock pin, the output data being obtained from Ql thru Q7 (although only Ql thru Q5 are actually used). This output is converted to an analog quantity when passed through the R–2R rudder resistance circuit.
If the power supply voltage is 5V, the voltage per step is approximately 0.156V with a total of about 4.84V. Since this 4024BP is only involved in up counting, setting to a value lower than the current value (that is, greater bias) results in an initial clearing and output of pulses until the set value is reached.