PV Electronics Nixie QTC-Four, Инструкция по сборке и руководство пользователя, Страница: 42 / 44

Nixie Tube Clock ‘Nixie QTC-Four’
Issue 1 (1 December 2019)
www.pvelectronics.co.uk
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11. TROUBLESHOOTING
11.1 Problems getting the correct High Voltage
This is the most common issue. Did you insert IC2? IC2 is needed to
generate the HV. If IC2 is in its socket and you don’t get HV, please
record the following DC voltages with IC2 out of its socket.
5V test Point Should be 5.6V
HV test point Should be approx. 12V
IC2 Socket, Pin 1 Should be ~5.6V
IC2 Socket, Pin 2 Should be ~0.14V
IC2 Socket, Pin 13 Should be 0V
IC2 Socket, Pin 20 Should be ~5.2V
If pin 2 is not to spec, check the feedback resistors R2 and R3 are
correct and correctly soldered.
If pin 20 is not to spec, check why the PIC is not getting power via
D3 (Orientation?)
Then, put IC2 back into its socket and test the voltages again.
5V test Point Should be 5.6V
HV test point Should be approx. 170V
IC2 Socket, Pin 1 Should be ~5.6V
IC2 Socket, Pin 2 Should be 2V
IC2 Socket, Pin 13 Should be more than 0V
IC2 Socket, Pin 20 Should be ~5.2V
If contacting us about an HV issue, please measure give us these
voltages in your email.