Velleman K8021 Manuale utente

Total solder points: 500

Difficulty level:

beginner 1o2o3o4o5þadvanced

K8021

HIGH-END CONTROL AMPLIFIER

ILLUSTRATED ASSEMBLY MANUAL H8021IP-1

VELLEMAN KIT NV

Legen Heirweg 33

9890 Gavere

Belgium

http://www.velleman.be

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. When solder

rolls off the tip, it needs cleaning.

•Thin raisin-core solder. Do not use any flux or grease.

•A diagonal cutter to trim excess wires. To avoid injury when cutting

excess leads, hold the lead so they cannot fly towards the eyes.

•Needle nose pliers, for bending leads, or to hold compo-

nents 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

1.2 Assembly Hints :

⇒Make sure the skill level matches your experience, to avoid disappointments.

⇒Follow the instructions carefully. Read and understand the entire step before

you perform each operation.

⇒Perform the assembly in the correct order as stated in this manual

⇒Position all parts on the PCB (Printed Circuit Board) as shown on the draw-

ings.

⇒Values on the circuit diagram are subject to changes.

⇒Values in this assembly guide are correct*

0.000

⇒Use the check-boxes to mark your progress.

⇒Please read the included information on safety and customer service

* Typographical inaccuracies excluded. Always look for possible last minute

manual updates, indicated as ‘NOTE’ on a separate leaflet.

1.3 Soldering Hints :

1-Mount the component against the PCB sur-

face 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

REMOVE THEM FROM THE TAPE ONE AT A

TIME !

Assembly hints

AXIAL COMPONENTS ARE TAPED IN

THE CORRECT MOUNTING SEQUENCE !

Color code table

IPESF SDK NDGB FNL

CODICE

COLORE CODIGO

CORES

CODIGO

COLORE

VÄRI

KOODI FÄRG

SCHEMA FARVE-

KODE FARGE-

KODE FARB

KODE COLOUR

CODE CODIFI-

CATION

DES

COU-

KLEUR

KODE C

0Nero Preto Negro Musta Svart Sort Sort Schwarz Black Noir Zwart 0

1Marrone Castanho Marrón Ruskea Brun Brun Brun Braun Brown Brun Bruin 1

2Rosso Encar- Rojo Punainen Röd Rød Rød Rot Red Rouge Rood 2

3Aran- Laranja Naran- Oranssi Orange Orange Orange Orange Orange Orange Oranje 3

4Giallo Amarelo Amarillo Keltainen Gul Gul Gul Gelb Yellow Jaune Geel 4

5Verde Verde Verde Vihreä Grön Grøn Grønn Grün Green Vert Groen 5

6Blu Azul Azul Sininen Blå Blå Blå Blau Blue Blue Blauw 6

7Viola Violeta Morado Purppura Lila Violet Violet Violet Purple Violet Paars 7

8Grigio Cinzento Gris Harmaa Grå Grå Grå Grau Grey Gris Grijs 8

9Bianco Branco Blanco Valkoinen Vit Hvid Hvidt Weiss White Blanc Wit 9

AArgento Prateado Plata Hopea Silver Sølv Sølv Silber Silver Argent Zilver A

BOro Dourado Oro Kulta Guld Guld Guldl Gold Gold Or Goud B

4K7= ( 4 - 7 - 2 - B )

4K7= ( 4 - 7 - 0 - 1 - 1 )

COLOR= 2… 5

The unit consists out of two PCB’s, one is the main PCB, P8021B and the other

is the left channel input section P8021L.

First we will start with the small P8021L, then we assemble the P8021B.

FTip: The pictures on the packaging can be

used as a guideline.

However, due to possible changes it is not

100% reliable.

CONSTRUCTION

qD1: 1N4148

qD2: 1N4148

qD3: 1N4148

qD4: 1N4148

qD5: 1N4148

qD6: 1N4148

1. Diodes (check the polarity)

CATHODE

D...

qR1: 10K (1-0-3)

qR2: 10K (1-0-3)

qR3: 10K (1-0-3)

qR4: 10K (1-0-3)

qR5: 10K 1-0-3)

qR6: 10K (1-0-3)

qR7: 1K (1-0-2)

qR8: 330R (3-3-1)

2. Resistors (check the color code)

R...

Construction

P8021L

qT1: BC557

qT2: BC557

qT3: BC557

qT4: BC557

qT5: BC557

qT6: BC557

5. transistors

qC1: 220p (221)

qC2: 220p (221)

qC3: 220p (221)

qC4: 220p (221)

qC5: 220p (221)

qC6: 220p (221)

3. Capacitors

C...

Construction

qRY1: VR05051AS or eq.

qRY2: VR05051AS or eq

qRY3: VR05051AS or eq

qRY4: VR05051AS or eq

qRY5: VR05051AS or eq

qRY6: VR05051AS or eq.

4-Reed relays (check the position

of the notch)

qSK1: MJ-523AG/B BLACK

qSK2: MJ-523AG/B BLACK

qSK3: MJ-523AG/B BLACK

qSK4: MJ-523AG/B BLACK

qSK5: MJ-523AG/B BLACK

qSK6: MJ-523AG/B BLACK

6. RCA connectors.

Mount them straight and

against the PCB

qSK7: HDR20/26

7. Pin connector. Mount it exactly

as indicated

RY...

P8021B Assembly

Construction

qJ1... J25

1. Jump wires

qR1: 10K (1-0-3)

qR2: 10K (1-0-3)

qR3: 10K (1-0-3)

qR4: 10K (1-0-3)

qR5: 10K (1-0-3)

qR6: 10K (1-0-3)

qR7: 10K (1-0-3)

qR8: 10K (1-0-3)

qR9: 47K (4-7-3)

qR10: 470R (4-7-1)

qR11: 620R/1% (6-2-0-0)

qR12: 33R (3-3-0)

qR13: 33R (3-3-0)

qR14: 390K/1% (3-9-0-3)

qR15: 33K/1% (3-3-0-2)

qR16: 1K (1-0-2)

qR17: 47K (4-7-3)

qR18: 470R (4-7-1)

qR19: 620R/1% (6-2-0-0)

qR20: 390K/1% (3-9-0-3)

qR21: 33K/1% (3-3-0-2)

4. Resistors (check the color code)

qD1: 1N4148

qD2: 1N4148

qD3: 1N4148

qD4: 1N4148

qD5: 1N4148

qD6: 1N4148

qD7: 1N4148

qD8: 1N4148

qD9: 1N4007

qD10: 1N4007

qD11: 1N4007

qD12: 1N4007

qD13: 1N4007

qD14: 1N4007

qD15: 1N4007

qD16: 1N4007

2. Diodes (check the polarity)

CATHODE

D... R...

qZD1: 20V / 0.6W

3. Zener diode (check the polarity)

CATHODE

ZD...

Construction

qR22: 1K (1-0-2)

qR23: 560R/1% (5-6-0-0)

qR24: 1K8/1% (1-8-0-1)

qR25A or R25B: 1K5 (1-5-0-1) (*)

qR26: 1K5 (1-5-2)

qR27: 560R/1% (5-6-0-0)

qR28A or R28B: 1K5 (1-5-2) (*)

* The position of R25 and R28 de-

pends on the supplied IC for IC2

and IC3:

Mount R25B and R28B if type

OPA134 is supplied.

Mount R25A and R28A. If types

OPA604 or TLE2071 are supplied.

qR29: 1K8/1% (1-8-0-1)

qR30: 1K5 (1-5-2)

qR31: 56R (5-6-0)

qR32: 56R (5-6-0)

qR33: 1K (1-0-2)

qR34: 330R (3-3-1)

qR35: 1R (1-0-0)

qR36: 1R (1-0-0)

qR37: 1R (1-0-0)

qR38: 1R (1-0-0)

qR39: 1K/1% (1-0-0-1)

qR40: 1K/1% (1-0-0-1)

qR41: 1K (1-0-2)

qR42: 1K (1-0-2)

qR43: 1K (1-0-2)

qR44: 1K (1-0-2)

qR45: 10K (1-0-3)

qR46: 10K (1-0-3)

qR47: 10K (1-0-3)

qR48: 10K (1-0-3)

qR49: 10K (1-0-3)

qR50: 4K7 (4-7-2)

qR51: 1R (1-0-0)

qR52: 470R (4-7-1)

qR53: 1K5 (1-5-2)

qL1: 1uH (1-0)

qL2: 1uH (1-0)

5. Choke

L...

qIC1: 8P

qIC2: 8P

qIC3: 8P

qIC4: 18P

6. IC sockets

qSK7: 20P (type 96120205)

7. Female header

J...

SK..

Construction

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