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THANK YOU FOR A GOOD TRANSACTION, NICE COPY, CLEAR
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Very Good! All the diagram are easy to read, and its complete.
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This was an excellent source of detailed assembly information on a device which is at least 12 years old. A very lucky find, coupled with great service.
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Excellent Service Manual and best price on the Internet. This Service Manual covers everything you could ever need including full circuit schematics, component layout diagrams, stripdown procedure and full parts list/breakdown. I needed this to carry out a modification to one of these headunits and this manual covered everything I needed. Fast delivery, processed within a few hours.
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Thought I would never find a copy of the Technics SX-EN2 Service Manual until I found Owner-Manuals.com. Price was very fair and I received the download promptly. While a photocopy, it is quite readable and includes all the pertinent information and diagrams. Thank you Owner-Manuals!
1. TECHNICAL SPECIFICATIONS
Rated power output (20 Hz to 20 kHz, 8 � load) ................................... 125 W Total harmonic distortion (20 Hz to 20 kHz, 8 � load) .................................. 0.02 % Output bandwidth (8 � load, 0.04 %) ........... 10 Hz to 50 kHz Frequency response ................... 10 Hz to 70 kHz, +0 / -1 dB Damping factor (8 � load, 1 kHz) ....................................... 60 S/N (IHF A network, input shorted) ............................. 110 dB
3. BLOCK DIAGRAM
MAIN AMP INPUT +29.0dB SPK OUT
INVERT OUTPUT MAIN TRANSF. PROTECTOR DRIVE EXT.CONT.IN
+15V -15V +B -B
Supply voltage [/N] ...................................... 230 V AC, 50 Hz [/U] ...................................... 120 V AC, 60 Hz Power consumption [/N] ................................................ 200 W (Stand-by) 1 W [/U] ............................................... 230 W (Stand-by) 2.5 W Dimensions Width ...................................................................... 88 mm Height ................................................................... 146 mm Depth .................................................................... 470 mm Weight ........................................................................... 5.7 kg
STANDBY
SUB TRANSF. +5V REMOTE CONT.IN REMOTE CONT.OUT AC OUTLET
+24V
µ-COM TMP47C201P
Design and specifications are subject to change without notice.
POWER SW
MAINS CORD
2.IC DATA
QY01 : TMP47C201P
4. TEST EQUIPMENT REQURED FOR SERVICING
Item
XOUT XIN RESET NOT USED DOUT PLED SLED VSS 1 2 3 4 5 6 7 8 16 15 R53 14 R52 13 R51 12 R50 11 R43 10 R42 9 VDD DIN (INT 1) VIN HEAT LEVEL RSEN AVSS Sink open-drain outputs ON
Use
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Distortion Analyzer
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Distortion measurements
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Sink open-drain outputs
R80 R81 R40 R41
Audio Oscillator
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Sinewave and squarewave signal source
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AC VTVM AC VTVM Oscilloscope
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Voltage measurements (AC)
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Waveform analysis and trouble shooting and ASO alignment
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Port R80 R81 R82 R40 R41 R42 R43 R50 R51 R52 R53
Pins 4 5 15 6 7 9 10 11 12 13 14
Name
In/Out Input
Active
Description Not used Data output from RC5.
DOUT DIN PLED SLED ON AVSS RSEN LEVEL HEAT VIN
Output Input Output Output Output Output Input Input Input Input L L L L/H L/H H/L L/H L/H L/H
Data input to RC5. Power LED. Stand-by LED. Power amplifier OFF/ON Power amp supply voltage control. Low/High voltage. Power amp output muting status detection input. OFF/ON. Power amp output level detection input. High/Low power. Heat sink overheating detection input. Overheat/Normal. Video and DC signal detection input. Detected/Not detected.
DC VTVM DC VTVM AC Wattmeter
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Voltage measurements (DC)
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Monitors primary power to amplifier
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Line Voltmeter
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Monitors poterntial of primary power to amplifier
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Vanable Autotransformer
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Adjust level of primary power to amplifier
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Circuit Tester
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Trouble shooting
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Shorting Plug
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Shorts amplifier input to eliminate noise pickup
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POWER
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