Hi everyone!
I assembled a kit with display of this type display pcb for CD-Pro2LF. The problem is that display is not turning on while the laser pick up is working well and fully contrlolled via handset.
Power supply for display is -21V, -18,5V and +5V via LM317 and LM337 regulators.
The strange detail is that negative voltage is the same (-21V) on two input contacts while supply is -18 and -21V. When negative voltage is off, on contacts is +5V.
Display controller diagramm is attached
Please help with advises. I am more experienced with tube designs)
I assembled a kit with display of this type display pcb for CD-Pro2LF. The problem is that display is not turning on while the laser pick up is working well and fully contrlolled via handset.
Power supply for display is -21V, -18,5V and +5V via LM317 and LM337 regulators.
The strange detail is that negative voltage is the same (-21V) on two input contacts while supply is -18 and -21V. When negative voltage is off, on contacts is +5V.
Display controller diagramm is attached
Please help with advises. I am more experienced with tube designs)
hello again. in specification is mentioned that it has fuses on board. how it looks like? any help?
Dear Tayro.
You have to adjust the voltages new after connecting the display.
kind regards
Horst Wenzel
Akustik Perfekt
You have to adjust the voltages new after connecting the display.
kind regards
Horst Wenzel
Akustik Perfekt
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