Assembly - tams elektronik WRM-4 Manual

tams elektronik

3.5. Assembly

Proceed according to the order given in the list below. First solder the components on the
solder side of the PCB and then cut the excess wires with the side cutter. Follow the
instructions on soldering in section 3.2.
Caution:
!
Several components have to be mounted according to their polarity. When soldering these
components the wrong way round, they can be damaged when you connect the power. In
the worst case the whole circuit can be damaged. At the best, a wrongly connected part will
not function.
1. Resistors
2. Diodes
3. IC sockets
4. Ceramic Capacitors
5. Transistor
6. Electrolytic capacitors
7. Voltage regulators
Terminal strips
8.
9. ICs in DIL-housing
Mounting orientation of no importance.
Observe the polarity!
The negative end of the diodes is marked with a ring. This is
shown in the PCB layout.
Mount the sockets that way, the markings on the sockets
show in the same direction as the markings on the PCB
board.
Mounting orientation of no importance.
Observe the polarity!
With transistors for a high power rating in TO packages (e.g.
BD types) the unlabelled back side is marked in the PCB
layout by a thick line.
Observe the polarity!
One of the two leads (the shorter one) is marked with a
minus sign.
Observe the polarity!
Before soldering, bend the voltage regulator´s pins to 90
degrees, so that you can solder it in corresponding to the
PCB layout with the labelled front side facing upwards.
Put together the terminal strips before mounting them.
Insert the ICs into the soldered socket.
Do not touch the ICs without first discharging yourself by
touching a radiator or other grounded metal parts.
Do not bend the "legs" when inserting them into the sockets.
Check that the markings on the PCB, the socket and the IC
show to the same direction.
WRM-4
Assembling the kit | 13