Elektor TAPIR Podręcznik budowy - Strona 6

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Measure the DC voltage at the upper solder pad of C4

(which is connected to T3 and R4). It should be

somewhere between 0.5 V and 1.0 V. If it is not, check

all solder joints for proper contact and check that all

components have been fitted in the right places.

Now remove PCB 3 from the panel, taking care to avoid damage to the tabs.

Then solder the Cinch panel-mount connector onto the PCB

(first straighten the two ground tabs).

Remove PCB 5 from the panel and lay PCB 3

on the bench with the Cinch connector facing

away from you. Place PCB 5 in the proper

position on PCB 3 and perpendicular to PCB 3,

with the marking M2×6 facing the Cinch

connector. For now, solder only the pad at the bottom right.

Remove PCB 6 from the panel and fit it perpendicular to PCB 3

with the marking M2×6 facing you. For now, solder only the pad at

the bottom right.

Remove PCB 7 from the panel and fit it perpendicular to PCB 3.

The proper orientation is clearly indicated by the solder pads.

Solder all three pads.

Take PCB 4 (with the headset connector) and insert it carefully into

the rear piece and down onto the bottom piece, so that the tabs of

PCB 5 and PCB 6 fit into the recesses in the side pieces. Press the

PCBs firmly together and solder them in place, starting at the

middle. While doing this, regularly check that the PCBs fit closely

together at the bottom – at this point it's still possible to make

corrections.

Now solder the joints between PCBs 3, 4 and 5 and between

PCBs 3, 4 and 6. Be sure to solder the joint between PCBs 3 and 4

at the bottom near the headset connector. If the tip of your

If everything is OK, the final three

components can now be fitted:

D1 (BAT54; marking WV4)

C2 & C4 (10 F; no marking, large

SMD)