6
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.
If everything is OK, the final three
components can now be fitted:
8.
D1 (BAT54; marking
WV4
)
9.
C2 & C4 (10 µF; no marking, large
SMD)
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
10
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8
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