User manual VELLEMAN K8040

[. . . ] · Needle nose pliers, for bending leads, or to hold components in place. · Small blade and phillips screwdrivers. A basic range is fine. For some projects, a basic multi-meter is required, or might be handy 0. 0 00 1. 2 Assembly Hints : Make sure the skill level matches your experience, to avoid disappointments. Read and understand the entire step before you perform each operation. [. . . ] Check the polarity ! q VR1 UA7805 17. The back side corresponds to the thick line. TR. . . C. . . q q q q q q q q q q q q q C17: 10µF C18: 10µF C19: 10µF C20: 10µF C21: 10µF C23: 1µF C24: 10µF C25: 47µF/63V C26: 47µF/63V C27: 47µF/63V C28: 47µF/63V C29: 220µF/63V C30: 220µF/63V q TR1: TIC246 or eq. 10 Construction 18. Check the polarity ! C. . . q BR1: RS603 19. LEDs q q q q COLOR= 2. . . 5 C31: 10. 000µF C32: 10. 000µF C33: 10. 000µF C34: 10. 000µF LD. . . CATHODE 21. Insert the IC's into their sockets. Watch the position of the notch ! q LD1: LED3RL (3mm LED) q LD2: LED3RL (3mm LED) q LD3: LED3RL (3mm LED) q IC1: VK8040 (PIC12C508) q IC2: CA258 or eq. q IC3: MOC3041 / KP3020 11 Construction 22. Short lead = Cathode or-- ! CAUTION: After bending the leads the long appearing lead will be the cathode! LD. . . CATHODE IMPORTANT Mount these LED's exactly like in the drawing, otherwise some LED's will Next: Solder one lead, and check the not fit correctly in the front panel. position, if necessary correct by heat- Please also use the front panel as a ing the soldering. Last: Solder the second connection. First: Bend the leads exactly like the drawing. 12mm C q q q q 7mm LD4: L-424YDT LD5: L-424YDT LD6: L-424YDT LD7: L-424YDT LD. . . Meter backlight: LD8 is a white LED serving as backlight for the power meter. q LD8: L5WD (5mm white) CATHODE 18mm 3mm 12 Construction 23. Mounting the Power IC q IC4: TDA7293 Mount the support plate onto the IC as shown in the drawing. Put a drop of silicone compound on both sides of the mica isolator. Also check the position of the plastic isolator A. ATTENTION : The bolt should be inserted on the side of the IC holder with the countersunk opening B !B A A Drop of heat conductive compound DO NOT TIGHTEN THE NUT YET 1. Position the IC onto the PCB. 2. Make sure that the support plate is touching the PCB surface. 4. Check again that the plate is touching the PCB surface. 5. Solder the IC connections. 13 Construction 24. Mounting the power transformer and mains voltage selection Mount the transformer as in the drawing (see also the picture on the packaging) Use the supplied straps (4 pcs) to fix the transformer. Primary windings (MAINS) connection: Check the table on the PCB for the correct voltage selection and connect the wires : For 230V (220V to 240V), edge orange, then brown and black. For 115V (110V to 120V), edge brown, then orange and black. [. . . ] q Connect a 10cm yellow/green wire to the earth point of SK12. Later these connection will be soldered to the mains connector. ! up. CAUTION: Some points on the PCB are connected to the dangerous mains voltage. Connect the mains AC voltage to the mains. See also the user manual about the power cord. FNormally after switching ON the amplifier, the light bulb should briefly light FIf the bulb glows constantly, disconnect the power immediately and re- check all connections. · Normally the standby LED on the front panel should light as should both 35V power indication LED's LD2 and LD3. 23 Test Test continued: · Now push the DC protection test button SW2, the bulb should light if the button is pressed. [. . . ]