Page 1
Total solder points: 220+ 65
Difficulty level:
beginner 1o 2o 3o 4þ 5o advanced
Passive Preamp with RF remote control
K8022
þ Two stereo line level RCA inputs
þ One stereo RCA output to power amp
þ Motor controlled volume control
þ RF remote control for all functions.
þ The remote does not need to ‘see’ the
receiver
þ Self-learning code
þ Range : up to 15m/yards depending
on environment.
þ Manual operation possible
þ Gold plated RCA connectors
þ Relay controlled input section
þ Totally passive
Specifications :
Preamp :
Ÿ Inputs : ..................................................2 (line level)
Ÿ Outputs : ...............................................1 (line level)
Ÿ Input impedance : .......................................5K ohm
Ÿ Output impedance : ..................................2.5K ohm
Ÿ Volume control speed : .15s typ. (0 to max. volume)
Ÿ Dimensions : .....235x165x47mm (9,5” x 6,7” x 1,9”)
Ÿ Power supply : ............................... 12VDC / 300mA
Remote Control :
Ÿ 433MHz operation
Ÿ Approved design (report BLC/96-0452 according to
I-ETS 300 220)
Ÿ Keychain-style
Ÿ Battery (not included) :12V type V23GA, GP23A, ...
Ÿ Dimensions : ........39x15x57mm (1,57” x 0,6” x 2,3”)
ILLUSTRATED ASSEMBLY MANUAL H8022IP-2
Page 2
Assembly hints
0.000
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 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
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*
⇒ 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.
2
Page 3
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 !
the essential requirements and all other relevant stipulations of directive 1999/5/
Velleman hereby certifies that the device K8022 meets
EG and 1995/5/EC.
For the complete conformity declaration check out :
http://www.velleman.be/downloads/doC/CE_K8022.pdf
3
Page 4
Color code table
5%
4K7= ( 4 - 7 - 2 - B )
1%
4K7= ( 4 - 7 - 0 - 1 - 1 )
COLOR= 2… 5
C
O
D
KODE
KLEUR
CODIFI-
CATION
DES
CODE
COLOUR
FARB
KODE
KODE
FARGE-
KODE
FARVE-
E
COU-
LEURS
4
FÄRG
VÄRI
CODIGO
CODIGO
I P E SF S DK N D GB F NL
CODICE
C
SCHEMA
KOODI
S
DE
COLORE
DE
CORES
COLORE
O
D E
Oranssi Orange Orange Orange Orange Orange Orange Oranje 3
Rojo Punainen Röd Rød Rød Rot Red Rouge Rood 2
jado
nado
Laranja Naran-
ciato
0 Nero Preto Negro Musta Svart Sort Sort Schwarz Black Noir Zwart 0
1 Marrone Castanho Marrón Ruskea Brun Brun Brun Braun Brown Brun Bruin 1
2 Rosso Encar-
3 Aran-
4 Giallo Amarelo Amarillo Keltainen Gul Gul Gul Gelb Yellow Jaune Geel 4
5 Verde Verde Verde Vihreä Grön Grøn Grønn Grün Green Vert Groen 5
6 Blu Azul Azul Sininen Blå Blå Blå Blau Blue Bleu Blauw 6
7 Viola Violeta Morado Purppura Lila Violet Violet Violet Purple Violet Paars 7
8 Grigio Cinzento Gris Harmaa Grå Grå Grå Grau Grey Gris Grijs 8
9 Bianco Branco Blanco Valkoinen Vit Hvid Hvidt Weiss White Blanc Wit 9
A Argento Prateado Plata Hopea Silver Sølv Sølv Silber Silver Argent Zilver A
B Oro Dourado Oro Kulta Guld Guld Guldl Gold Gold Or Goud B
Page 5
Construction
IMPORTANT
The construction of this kit consists of two parts :
• The assembly of the passive preamp.
• The assembly of the RF remote control unit.
This manual only deals with the assembly and testing of the passive preamp.
Please refer to the supplied RF remote control manuals for details on the as-
sembly and configuration of the RF remote control unit.
1. Jumperwires
q J1
q J2
2. Resistors (check the color code)
R...
q R1: 10 (1-0-0)
q R2: 1K (1-0-2)
q R3: 1K (1-0-2)
q R4: 1K (1-0-2)
q R5: 10K (1-0-3)
q R6: 10K (1-0-3)
q R7: 10K (1-0-3)
q R8: 10K (1-0-3)
q R9: 270 (2-7-1)
q R10: 18K (1-8-3)
q R11: 33K (3-3-3)
q R12: 5K6 (5-6-2)
q R13: 2K7 (2-7-2)
q R14: 18K (1-8-3)
q R15: 6K8 (6-8-2)
q R16: 6M8 (6-8-5)
q R17: 1K (1-0-2)
q R18: 1K (1-0-2)
q R19: 2K2 (2-2-2)
q R20: 10K (1-0-3)
q R21: 1 (1-0-B)
q R22: 470 (4-7-1)
3. DIODES (Check the polarity)
CATHODE
D...
q D1 : 1N4007
q D2 : 1N4007
q D3 : 1N4007
q D4 : 1N4007
q D5 : 1N4007
q D6 : 1N4007
q D7 : 1N4148
4. Zener diodes
(Check the polarity)
CATHODE
ZD...
q ZD1 : 4V3
q ZD2 : 5V1
5. Axial coil
L2
q L2 : 1µH (1-0-B)
5
Page 6
Construction
6. IC socket
(Watch the position of the notch)
q IC1 : 8p
q IC2 : 8p
7. Capacitors
C...
q C2 : 100n (104)
q C3 : 100n (104)
q C5 : 100n (104)
q C6 : 100n (104)
q C9 : 100n (104)
q C10 : 100n (104)
q C11 : 82p (82)
q C12 : 22p (22)
q C13 : 330p (331)
q C14 : 1p (1)
q C15 : 3p3 (3.3)
q C16 : 330p (331)
q C17 : 2p2 (2.2)
8. Transistors
q T1 : BC547C
q T2 : BC547C
q T3 : BC557C
q T4 : BC557C
q T5 : BF199
q T6 : BC547C
9. Push buttons. Mount them
straight against the PCB surface !
q SW1: TS-04PV
q SW2: TS-04PV
10. Adaptor jack. Mount it straight
against the PCB surface !
J...
+
SW
-
q SK1 : DJ-005
11. RCA connectors. Mount them
straight and against the PCB
q SK2: MJ-523AG/B BLACK
q SK3: MJ-523AG/R RED
q SK4: MJ-523AG/B BLACK
q SK5: MJ-523AG/R RED
q SK6: MJ-523AG/B BLACK
q SK7: MJ-523AG/R RED
12. Tuning coil
q L1 : MC1.5T
6
Page 7
Construction
13. Relay
RY...
q RY1 : VR1D122C
14. Electrolytic capacitors
(Watch the polarity !)
C...
q C1 : 1000µ / 25V
q C4 : 470µ / 25V
q C7 : 1000µ / 25V
q C8 : 470µ / 25V
q C18 : 1µ / 50V
16. Potentiometer. Mount it
straight and against the PCB
Connect as shown
15. Voltage regulators
VR...
q VR1 : 7809
q VR2 : 7806
q RV1
Connect the motor to the PCB
by means of two wire jumpers
M+
M-
7
Page 8
Construction
CATHODE
17. Mounting the LED’s. Check the polarity ! Short lead = Cathode or - !
LD...
IMPORTANT
Mount these LED’s exactly like in the
drawing, otherwise some LED’s will not
fit correctly in the front panel.
Please also use the front panel as a positioning reference.
First: Bend the leads exactly like the drawing.
Next: Solder one lead, and check the position, if necessary correct by heating
the soldering.
Last: Solder the second connection.
q LD1
q LD2
7mm
q LD3
q LD4
11mm
7mm
q LD5
LD...
CATHODE
8
Page 9
18. IC’s
(Watch the position of the notch !)
Construction
IC1 : VK8022
(programmed PIC 12CE518)
IC2 : LM258 or eq.
19. Mounting the PCB into the enclosure
Make sure to remove the protective foil from the front and rear panel !
Stick the supplied rubber feet onto the bottom of the enclosure.
9
Page 10
Adjustment & testing
20. Adjustment and testing
Inspect the complete assembly once more before applying
power to the unit !
An adaptor jack allows hook-up of a suitable 12VDC / 300mA wall adaptor.
Make sure the input voltage matches your domestic AC voltage. Mind the
polarity !
12VDC / 300mA
Plug the adaptor into a wall outlet. The left channel indicator lights and the
volume control automatically turns to zero. The ‘volume down’-led will also
light until the volume control has reached it’s endpoint. Press any button to
stop this action.
Now you can perform the adjustment of the RF receiver section. Use the
supplied plastic screwdriver to adjust the tuning coil L1. Press and hold any
button on the remote
control and slowly adjust
L1 until LD5 lights with
maximum brightness.
Next, call on some
assistance and have
somebody push the remote
at a distance of a couple of
meters/yards, while you
slowly adjust L1 again for
maximum brightness of
LD5.
10
Page 11
Adjustment & testing
Adjustment and testing (continued)
Your K8022 is capable of grabbing and memorising the code transmitted from
the Velleman two channel RF remote control transmitter.
At the factory, the K8022 processor has been pre-programmed for operation
without a custom code (i.e. no jumpers on remote). There is no need to enter
the learn-mode if no code has been set on your remote control. Should you experience interference due to other Velleman remotes with identical code settings, then you can set a different code on your remote control (see remote
control manual for ‘how-to’ instructions). Once the transmitter code is set, the
K8022 will need to learn and memorise it.
How to operate the learn-mode:
• Press and hold SW1 (Channel 1) and plug-in power supply.
• Release SW1
• LD2 will turn on briefly.
• Press ‘volume down’ (left button) on remote.
• LD2 will turn on briefly to confirm.
• Release ‘volume down’
• LD1 will turn on briefly
• Press ‘volume up’ (right button) on remote.
• LD1 will turn on briefly to confirm.
• Release ‘volume up’
• Channel indication (LD3&LD4) will toggle briefly.
• Press both remote control buttons simultaniously.
• Channel indication will toggle briefly to confirm.
• Release both buttons
Volume will now turn to zero.
Learning cycle is completed
and the new code will be
memorised. Repeat this procedure if code is not memorised
correctly
(e.g. due to interference). Code
will be retained in case of power
failure.
The unit is now ready for use.
Fasten the lid with the two supplied screws as shown.
11
Page 12
Hook-up
21. Hook-up to your system
TO
POWER
AMPLIFIER
TO
LINE
SOURCE
1
00:00 00:00
TO
LINE
SOURCE
2
Hook-up the left and right outputs of your K8022 to the left and right inputs
of the amplifier.
You can hook up a line-level source (e.g. CD player, MD player, tuner, tape
recorder, ...) to each input channel
12
Page 13
22. Operation
Operation
1
2 3
4
1
Channel I indicator
2
Channel I selector. Push to select channel I.
3
Channel II selector. Push to select channel II.
4
Channel II indicator
‘Volume down’-indicator.
5
Lights when ‘volume down’ is pressed on remote control.
6
Volume control. Turn clockwise to increase volume
‘Volume up’-indicator.
7
Lights when ‘volume up’ is pressed on remote control.
5 6 7
Remote control :
1 2
Affix the supplied sticker to the housing.
Velleman
433,92 MHz
SRFCE
1
‘Volume down’-pushbutton. Push to
reduce volume
2
‘Volume up’-pushbutton. Push to
increase volume
Press both buttons simultaniously to toggle
between CH I and CHII
13
Page 14
PCB
23. PCB layout
R21
SW
SK1
12VDC/300mA
C1
SK2
SK3
SK4
SK5
SK6
SK7
+ -
R OUT L
RY1
R CH1 L
T6
R CH2 L
C5
D1
C6
C7
C2
NO2
NC2
COM2
D7
VR2
NO1
NC1
COM1
C1
R20
Power supply
R1
D2
C4
VR1
C2
C3
R22
Input section
C8
D5
J1
D6
LD5
Reception
Indicator
Adjust L1 for max. brightness
Use plastic trimtool
Push transmitter
T2
M+
T4
C9
M-
T3
D4
T1
D3
R2
Motor control
How to operate learn mode:
-Press and hold SW1 at power-up
-LD2 will turn on briefly
-Press 'volume down' on remote
-LD2 will turn on briefly to confirm
R17
IC2
R19
R18
ZD2
R9
R11
R10
R14
C12
C13
T5
C15
L1
Tuning
-LD1 will turn on briefly
to confirm
-Press 'volume up' on remote
-LD1 will turn on briefly to confirm
-Channel indication will toggle briefly
-Press both remote buttons
-Channel indication will toggle briefly
RF receiver
ZD1
C18
R16
R15
C17
C16
C11
R12
R13
L2
C14
RV1
When learn cycle is completed
volume will turn to 0
R5
R6
J2
C10
IC1
LD1
LD2
K8022'1
Velleman Kit
Processor
R7
R3
SW2
LD3
R8
LD4
SW1
R4
14
Page 15
24. Diagram
S
K
4
C
H
1
LSK
6
C
H
2
LSK
5
C
H
1
RSK
7
C
H
2
R
D
SIG
GND
SIG
GND
SIG
GNDMR
V1M+M
-SIGGND
G
N
D
GND
GP4/OSC
2
3
GP5/OSC
1
/CL
KIN
2
GP3/MCLR/Vp
p4GP2/T0C
K
l
5
GP07GP1
6
8
IC1PIC12C51
8SW2SW1
G
N
DGN
D
VpC
1
0
100nG
N
D
GND
V
p
Y
G
N
D
4
R
5
GND
Diagram
1
A
L
E
3
4
R
D
D
L
K
R31
*Values are subject to changes in the interest of product improvement
Refer to partlist and/or added notes for actual values and references
L
K
R41
p
V
6
R
p
V
7
R
p
V
8
R
p
V
K
0
t
t
E
f
1
h
e
g
D
i
L
O
R
C
E
D
O
C
1
A
2
C
I
x
r
8
V
7
2
p
2
7
1
C
0
7
x
R92
r
V
3
B
2
C
I
8
6
1
M
R
6
5
6
8
1
µ
C
1
8
5
1
K
R
6
4
K
1
8
R
1
0
K
1
8
R
1
L11
1
p
1
2
C
8
D
N
G
5
D
L
2
9
1
K
R
2
8
5
2
M
L
2
8
1
x
R
r
V
7
1
x
R
r
V
p
6
0
1
3
C
3
D
N
G
5
3
1
p
C
3
5
T
2
p
1
2
C
2
1
K
1
3
R
3
D
N
G
D
N
G
2
7
D
V
Z
4
K
1
K
1
4
1
p
C
1
9
9
1
F
T5B
D
N
G
1
3
D
V
Z
4
D
N
G
7
3
H
1
K
µ
R
2
L21
p
3
0
1
3
C
3
6
2
1
K
D
R
5
N
G
D
N
G
G
G
I
I
S
S
D
D
N
N
G
G
G
G
I
I
S
3
R
K
T
S
U
O
m
V
S
2
L
K
T
S
U
O
r
V
7
4
5
C
B
2
T
7
4
0
0
D
W
4
6
.
N
0
1
/
E
2
K
R12
R21
7
0
0
4
N
D31
1
T
7
4
5
C
B
p
V
m
V
2
D
O
5
0
8
7
2
A
R
I
V
U
r
V
N
G
G
I
S
C
2
2
1
D
1
1
Y
R
R
V
7
4
5
C
D
T6B
N
7
D
8
4
1
4
N
1
2
D
L
1
D
L
2
0
2
6
R
5
µ
8
0
C
7
4
7
0
0
7
4
C
N
1
n
6
0
C
0
1
GND
n
0
0
C51
G
0
K
2
0
R
1
Y
A
L
E
R
t
h
g
i
R
L
R
3
D
E
L
+
M
-
L
M
R
3
D
E
L
t
f
e
L
D
N
G
D
N
G
µ
0
0
0
D
1
N
G
D
N
G
D
N
G
D
N
G
7
5
5
C
T4B
7
0
6
0
D
4
N
1
n
D
0
9
C
9
0
8
7
1
A
R
V
U
1
D
K
C
A
J
1
C
K
S
D
N
0
1
G
7
0
0
4
5
N
D
1
3
7
T
5
5
C
B
x
r
µ
V
0
7
C44
D
N
n
G
0
0
C31
D
N
G
O
D
N
G
n
I
2
0
C
0
D
1
N
G
µ
1
0
0
C
D
0
1
N
G
7
0
0
4
N
1
D
N
G
W
-
+
S
1
2
D
R
1
N
G
G
I
S
15
Page 16
VELLEMAN COMPONENTS NV
Legen Heirweg 33
9890 Gavere
Belgium Europe
Info & support: www.velleman.be
Modifications and typographical errors reserved
© Velleman Components NV
H8022IP - 2002 - ED2
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