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SIGNAL TRACER / INJECTOR KIT

K7000

ILLUSTRATED ASSEMBLY MANUAL H7000IP-1

Total solder points: 85

Difficulty level: beginner 1  2  3  4  5  advanced

Summary of content (12 pages)

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Total solder points: 85 Difficulty level: beginner 1  2  3  4  5  advanced SIGNAL TRACER / INJECTOR KIT K7000 troub s audio e fi li p im S ILLUSTRATED ASSEMBLY MANUAL ng.
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VELLEMAN NV Legen Heirweg 33 9890 Gavere Belgium Europe www.velleman.be www.velleman-kit.
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Features & Specifications Features This signal tracer /injector has been designed to inject or detect a specific signal into an audio circuit in need of repair (such as amplifiers, radios, tone controls, ...) so as to detect the fault. In this way problems can be traced more easily. The signal tracer may also be used as a simple monitor or amplifier. Specifications :  Output power: 0.5W / 8ohm  Power supply: 7-9VAC or 9-12VDC / 150mA  Dimensions: 60 x 53mm (2.4" x 2.1") Injector:  0-2.
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Assembly hints 1. Assembly (Skipping this can lead to troubles ! ) Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 Make sure you have the right tools:  A good quality soldering iron (25-40W) with a small tip.  Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will protect the tip, and enables you to make good connections.
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Assembly hints 1.3 Soldering Hints : 1- Mount the component against the PCB surface and carefully solder the leads 2- Make sure the solder joints are cone-shaped and shiny 3- Trim excess leads as close as possible to the solder joint AXIAL COMPONENTS ARE TAPED IN THE CORRECT MOUNTING SEQUENCE ! REMOVE THEM FROM THE TAPE ONE AT A TIME !  You will find the colour code for the resistances and the LEDs on our website: http://www.velleman.be/common/service.
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Construction 1. Zenerdiode. Watch the polarity !  ZD1 : 7V5 CATHODE ZD1 2. Diodes. Watch the polarity !  D1 : 1N4007  D2 : 1N4007 CATHODE  R4  R5  R6  R7  R8  R9  R10  R11 : : : : : : : : 22K 100K 5K6 1K5 470K 2K2 100 10 (2 - 2 - 3 - B) (1 - 0 - 4 - B) (5 - 6 - 2 - B) (1 - 5 - 2 - B) (4 - 7 - 4 - B) (2 - 2 - 2 - B) (1 - 0 - 1 - B) (1 - 0 - 0 - B) 4. IC socket, Watch the position of the notch!  T1 : BC547C  T2 : BC547C 7. PCB tabs.
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Construction 9. Electrolytic Capacitor. Watch the polarity !  C8  C9  C10  C11  C12  C13  C14 : : : : : : : 1µF 1µF 47µF 100µF 100µF 100µF 470µF 11. IC. Watch the position of the notch! C... IC1 : LM386 10. Potentiometers. RV...
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Test & Usage 12. TEST & USAGE Connect a test flex (preferably screened) to the in- and output (marked OUT, IN). Turn the potentiometers to their minimum position (completely to the left). Connect a loudspeaker (min 4 ohm 0,5W) to output LS and earth. 2 RV 1 RV Fig. 1.0 Connect either a transformer ( 2 X 7- 9VAC) to points VA and VB (fig 1.0), with its centre branching to earth, or a 9V battery with its plus pole to VA or VB and its minus pole to earth (fig 2.0).
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Testing Fig. 1.0 Fig. 2.0 Usage :  Connect the earth of the signal generator/tracer to the earth of the circuit to be tested (to do so you may use one of the screens of the test flexes).  Now you can "detect" or "inject" a signal at certain points of the circuit (e.g. the base of a transistor) so as to locate the defective component.
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PCB 13.
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Diagram 14.
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VELLEMAN NV Legen Heirweg 33, B-9890 GAVERE Belgium (Europe) Modifications and typographical errors reserved © Velleman nv. H7000IP - 2014 - ED1 (rev.1.