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There are currently no product reviews.
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Very complete and well reading drawings. Documentation is essential for successful repairs.Good documentation, with all that is necessary. This manual was what I was waiting with all the information necessary for the repairing I need it for. You must buy it if you want to do repairs or simply understand how it works.
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Excellent service manual includes everything is need to repair this radio-caseete, how to disassemble, wiring diagram, all , waiting time until the download was only a few hours. I'm going to buy service manuals from here, are cheap and very good.Thank you.
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Good service manual,i saved from scrapping this deck,is now fully functional.Thanks.
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Found this to be the manual included with the original packinging, was helpfull but did not give any detailed repair instructions.
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Complete service manual, was very helpful in repairing this tapedeck.Thanks.
Powered Subwoofer
BU2
BU2 TEST PROCEDURE
TEST PROCEDURE
Equipment needed:
n n n n
7. Turn on generator and adjust so that speaker level output
is 2.0V, 50 Hz. Turn VOLUME control full clockwise.
8. Green LED should light, immediate bass response should
be heard and felt from port tube opening.
Function/signal generator/sweep generator Integrated Amplifier Multimeter Cables - line level (RCA) and speaker cables
signal source.
Sweep Function 1. Follow steps 1 - 4 above, using a sweep generator as a
2. Sweep generator from 20Hz to 300Hz. Listen to the
cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove driver and test.
General Function
UUT = Unit Under Test
1. Connect both right and left line level inputs (RCA) to
signal generator and UUT. Use Y-cable if necessary from mono source. VOLUME control should be full counterclockwise.
2. Turn on generator, adjust to 50mV, 50 Hz. 3. Plug in UUT; red LED should be ON. Turn VOLUME
control full clockwise.
Driver Function 1. Remove driver from cabinet; detach + and - wire clips.
2. Check DC resistance of driver; it should be 3.3 ohms. 3. Connect a pair of speaker cables to driver terminals.
Cables should be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
4. LED should turn Green; immediate bass response should
be heard and felt from port tube opening.
5. Turn off generator, turn VOLUME control fully
counterclockwise, disconnect RCA cables.
4. Sweep generator from 20Hz to 1kHz. Listen to driver for
any rubbing, buzzing, or other unusual noises.
6. Connect one pair of speaker cables to either high level
input terminal on UUT. Cables should be connected to an integrated amplifier fed by the signal generator.
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