Littfinski Daten Technik S-DEC-4-DC-B User guide

Littfinski DatenTechnik (LDT)

Assembly Instruction

Pos.

Qty.

Component

Remarks

Ref.

Done

4-fold turnout decoder

with possible external power supply

from the Digital-Professional-Series !

S-DEC-4-DC-B Part-No.: 910211

Compatible to the DCC-Format:

(e.g. Lenz Digital Plus, Arnold-, Märklin-Digital=, Intellibox,

TWIN-CENTER, Roco-Digital, EasyControl, ECoS,

KeyCom-DC, Digitrax, DiCoStation, Zimo and others)

(switching of turnouts via Lokmaus 2® and R3® is possible)

For digital control of:
⇒ up to 4 twin-coil magnet accessories

(e.g. turnouts or semaphore-signals).

⇒ up to 8 single-coil magnet accessories

(e.g. uncoupling tracks).

⇒ up to 4 permanent power switch units [DSU]

(e.g. illumination).

This product is not a toy! Not suitable for children under 14 years of age!
The kit contains small parts, which should be kept away from children under 3!
Improper use will imply danger of injuring due to sharp edges and tips! Please
store this instruction carefully.

CE Part-No.:

21 21 13

yellow point

Introduction:

You have purchased the 4 fold turnout decoder kit
S-DEC-4-DC for your model railway supplied within the
assortment of Littfinski DatenTechnik (LDT). The S-DEC-4-DC
kit is a high quality product which is easy to assemble.

We are wishing you having a good time for assembling and
using this product.

General:

Tools required for the assembly

Please assure that the following tools are available:

• a small side cutter

• a mini soldering iron with a small tip

• solder tin (if possible 0,5mm diameter)

Safety Instructions

• All electrical and electronic components included in this kit
shall be used on low voltage only by using a tested and
approved voltage transducer (transformer). All components
are sensitive to heat. During soldering the heat shall be
applied for a very short period only.

• The soldering iron develops a heat up to 400°C. Please keep
continual attention to this tool. Keep sufficient distance to
combustible material. Use a heat resistant pad for this work.

• This kit consist of small parts which can possibly be
swallowed from children. Children (especially under 3 years)
shall not participate on the assembly without supervision.

>> kit <<

Set-Up:

For the board assembly please follow exact the sequence of the
below assembly list. Cross each line off as done after
completing the insertion and the soldering of the respective
part.

For the diodes and the zener diodes please keep special
attention to the correct polarity (marked line for the cathode).
The zener diode D4 has a thicker connection wire suitable
for position D4 only.

With reason to different makes of electrolytic capacitors you
will find different markings of the polarity. Some are marked with
"+" and some are marked with "-". Each capacitor has to be
assembled to the board that the marking on the capacitor is in
correspondence with the marking on the pc-board.

Integrated circuits (ICs) are either marked with a half round
notch on one end or a printed point for the correct mounting
position. Push the ICs into the socket assuring that the notch or
the point is corresponding with the triangular marking on the pc­board.

Please attend to the sensitivity of the ICs to electrostatic
discharge which will cause immediate damage of the IC.
Before touching those components please discharge yourself
by contacting an earthed metal (e.g. earthed radiator) or work
with an electrostatic safety pad.

Please attend to the mark "+" of the rectifiers. Some
manufacturers mark the "+" connections additionally with a
longer connection wire. If the rectifier shows a flattened side as
marking this side has to correspond with the marking on the pc­board.

Assembly List:

1 1 Printed circuit board
2 1 Z-Diode BZX ... 5V1 attend to the polarity! D1
3 2 Diodes 1N4003 attend to the polarity! D2, D3
4 1 Z-Diode BZX ... 30 attend to the polarity! D4
5 4 Resistors 1,5kOhm brown-green-black-brown R1..R4
6 1 Resistor 18kOhm brown-grey-black-red R5
7 1 Resistor 220kOhm red-red-black-orange R6
8 1 Resistor 1MOhm brown-black-black-yellow R7

9 3 Capacitors 100nF 100nF = 104 C3..C5
10 3 IC-Sockets18poles IC1..IC3
11 1 IC-Socket 8poles IC4
12 1 IC-Socket 6poles IC5
13 1 Resonator 8MHz CR1
14 1 Electrolytic-cap. 100uF/25V attend to the polarity! C6
15 1 Electrolytic-cap. 470uF/35V attend to the polarity! C7
16 1 Rectifier attend to the polarity! GL1
17 2 Multi-Fuse R050 MF1, MF2
18 1 Push Button S1
19 1 Clamp 2poles KL1
20 5 Clamps 3poles KL2..KL6
21 1 IC: Z86E0...PSG attend to the polarity! IC1
22 2 IC: ULN2803A attend to the polarity! IC2, IC3
23 1 IC: 93C46 attend to the polarity! IC4
24 1 IC: CNY17 attend to the polarity! IC5
25 Final control

Littfinski DatenTechnik (LDT)

D-25492 Heist/Germany

Phone: [phone] / 977 381

Fax: [phone] / 977 382

Internet: http://www.ldt-infocenter.com

Subject to technical changes and errors.  03/2014 by LDT

Arnold, Digitrax, Lenz, Märklin, Motorola, Roco and Zimo are

Made in Europe by

registered trade marks.

Kleiner Ring 9

Soldering instruction

Provided you have no special experience in soldering electronic
components please read first this soldering instruction before starting
the job. Soldering has to be trained!

1. Never use additional fluxes for soldering electronic circuits which
contain acids (e.g. zinc chloride or ammonium chloride). Those can
destroy components and printed circuits when not washed off
completely.

2. As soldering material only lead free soldering tin with a rosin core
for fluxing should be used.

3. Use a small soldering iron with max 30 Watt heating power. The
solder tip shall be free from scale to assure an excellent heat
transfer to the area to be soldered.

4. The soldering shall be performed on a speedy way because a long
heat transfer can destroy the components. To much or to long
heating can take off the copper pads and copper tracks from the
board.

5. For a good soldering a well tinned solder-tip has to be brought in
contact to the copper-pad and the component wire at the same
time. Simultaneous a little solder-tin shall be applied for heating up.
As soon as the solder-tin starts melting the tin wire has to be taken
away. Just wait until the tin has well wetted the pad and the wire
and take the soldering iron away from the soldering area.

6. Make sure not to move the just soldered component for about 5
seconds after removing the soldering iron. This should create a
silver shining faultless soldering joint.

7. For a faultless soldering joint and well done soldering is a clean
non-oxidized soldering-tip absolutely required. It is not possible to
perform a sufficient soldering joint with a dirty soldering tip.
Therefore please clean the soldering tip from excessive solder-tin
and dirt by using a wet sponge or a silicone cleaning pad after each
soldering process.

8. After completion of the soldering all connection wires have to be
cutted off directly above the soldering joint by using a side cutter.

9. By soldering semiconductors (transistors, diodes), LED`s and IC`s
is it very important never to exceed the soldering time of 5 seconds
to prevent the destruction of the component. It is absolutely
required to attend to the correct polarity of the component before
starting the soldering process.

10. After the board assembly carefully control the pc-board about
correct insertion of the components and the correct polarity. Please
check if no connections or copper tracks are accidentally short
circuited by soldering tin. This can not only result to malfunction of
the module but also result to a destruction of expensive
components.

11. Please take into account that improper soldering joints, wrong
connections, faulty operation or wrong board assembly is not a
matter within our sphere of influence.

General installation information

The contact-wires of resistors and diodes to be assembled in a lying
position shall be bended in accordance to the raster distance into a right
angular position and assembled into the specified bores (in accordance
to the board assembly plan or the assembly markings). To prevent that
the components will not fall out by turn-over the pc-board please bend
the connection wires about 45° apart and solder them carefully to the
copper pads on the rear side of the board. Finally the excessive wires
shall be cutted off with a small side cutter.

The resistors in the supplied kits are metal-foil resistors. Those have a
tolerance of 1% and are marked with a brown “tolerance-ring”. The
tolerance ring can be identified by the larger margin distance
respectively the larger distance to the other four marking rings.
Normally there are five color rings on the metal-foil resistors. To read
the color code you have to locate the resistor that way that the brown
tolerance ring will be on the right side. The color rings will be red now
from left to right!

Please take care to assemble diodes with the correct polarity (position
of the cathode marking). Take care about a very short soldering time!
The same will apply to the transistors and the integrated circuits (IC`s).
The flat side of the transistors has to correspond with the marking on
the pc-board.

The transistor legs should never be assembled in a crossed position.
Further those components should have a distance of about 5mm to the
board. Attend to the short soldering time to prevent the damage of the
component by excessive heat.

Capacitors shall be assembled into the respective marked bores, the
wires to be bent a little apart and careful soldered to the copper pad. By
the assembly of electrolytic capacitors (electrolytic cap) it has to be
attended to the correct polarity (+,-)! Wrong-way soldered electrolytic
capacitors can explode during the application! Therefore is it very
important to check the correct polarity two- or even better three-times.
In addition it has to be attended to the correct capacitor values, e.g. n10
= 100pF (not 10nF!).

A careful and clean assembly will drastically reduce the possibility that
anything will not be in correct function. Check every step and every
soldering joint two times before carrying on! Attend closely to the
assembly list! Perform the described step not different and do not skip
any step! Mark each step as done at the foreseen column after
assembly and careful check.

Take your time. Private work is no piece-work because the time for
careful assembly work is much less than an extensive fault diagnosis.

Final assembly

Sockets and integrated circuits (IC´s) of the kits will be supplied on a
piece of foam to assure safe transport.
This foam shall never be used below or between components as this
foam is electrical conductive.

In case the kit will be taken into operation the conductive foam can
produce a short circuitry and destroy the complete kit. Anyhow the
function of the module will not be as expected.

Warranty

As we have no influence to the proper and correct assembly we have to
limit our warranty to the complete supply and the faultless quality of the
components.

We guarantee the function of the components in accordance to the
identified values within a non-assembled condition of the parts and the
compliance of the technical data of the circuit by attending to the
respective soldering instruction and the specified start of operation of
the module including connection and operation.

Further demands are not accepted.
We are not taking over any warranty nor any liability for any harm or

sequential damage connected to this product.
We reserve our right for a repair, rework, supply of replacement or

refund of the purchase price.
The following criteria will result to a non-repair respectively to a lost of

right to claim under guarantee:

• if acid-containing soldering tin or fluxes with corrosive content and
others have been used

• if the kit has been improper soldered or assembled

• by alterations or repair-trials on the device

• by own circuit amendments

• by construction of non-intended improper displacement of

components, free wiring of components etc.

• application of other non-original kit-components

• by damaging of copper tracks or soldering copper pads on the

board

• by wrong assembly and the sub sequential damages

• overloading the module

• by damages caused by intervention of foreign persons

• by damages caused by disregarding the operation manual

respectively the connection plan

• by connecting a wrong voltage respectively a wrong current

• by wrong polarity connection of the module

• by wrong operation or damages caused by negligent usage or

abuse

• by defects caused by bridged or wrong fuses.

All such cases will result to a return of the kit to your expenses.

Subject to technical changes and errors.  05/2013 by LDT