Nixie Clock IN-14 All-In-One, Руководство по монтажу

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Back light LEDs
Parts List:
R37 1k
Q3,Q4,Q5 2N7000
Q6 MPSA42
R17 10k
R9,R11,R12 1k
LED2 RGB Common Anode
R13,R15,R16 1k
LED3 RGB Common Anode
R21,R22,R23 1k
LED4 RGB Common Anode
R24,R25,R29 1k
LED5 RGB Common Anode
R31,R32,R33 1k
LED6 RGB Common Anode
R34,R35,R36 1k
LED7 RGB Common Anode
This step installs the RGB back light LEDs. We do this now, because the RGB LEDs are mounted
under the tubes.
You should make a short test after you install each RGB LED. The startup pattern should slowly
turn on and then off the colons, the Red channel of the RGB LEDs, then the Green channel and
then the Blue channel. There is a gap in the sequence for the separators, which we will install
later.
Warning!
The startup procedure will run over and over again until you tell the
clock to move on.
You can tell the clock to move into normal mode by pressing the button when
the tubes show all “8”s (“88:88:88”). If you do this by mistake and want to go
back to the startup procedure, you can do a “Factory Reset”. See the user
manual to find out how to do this.
Trouble
shooting
If any of the channels does not go out completely:
Sometimes the LEDs don't go out completely (especially the Blue channel,
because the blue LED is very sensitive). If this happens, carefully clean the flux
residue from around Q3-6 (of course with the power off) using a cotton bud and
pure alcohol. The FETs are very sensitive to being partially turned on due to
tracking over the flux. Let the board dry completely before re-testing.
Notes:
•
You can install either LEDs or neons as the colon indicators. There is a minor change to