![](/images/new-backgrounds/1269202/26920251x1.webp)
Chapter
Figure 3-4 High Voltage Power Supply I/O signals.
HVPS - Inputs
HVPS_SYNC - this signal is generated on the Raster Timing Generator PCB. Square wave HCT level with 50 or 33% duty cycle. The signal is synchronized to horizontal sync.
/HV_ENA - The HVPS shutdown signal from the Video Amplifier PCB (/VA_OK).
H_PARABOLA - The horizontal parabola from the Convergence Deflection PCB used by the Dynamic Focus Amplifier.
V_PARABOLA - The vertical parabola from the Convergence Deflection PCB used by the Dynamic Focus Amplifier.
±15 V. - The power source for the analog circuitry in the High Voltage Power Supply.
+80 V. - The input power for the High Voltage section of the High Voltage Power Supply.
HVPS - Outputs
G1 Supply - goes to Video Amplifier PCB
G2 Supply - goes to Video Amplifier PCB
/HV_OK - goes to System Controller PCB
Model 250 Service Manual |