JVC Model 200 - Manual (Page 26)

Chapter 2---System Description
HVPS_SYNC Square wave HCT level with 50 or 33% duty cycle synchronized to
horizontal sync.
Video Processor PCB
INPUT DESCRIPTION
/HV_ENA The HVPS enable line. A low enable the HVPS (VA_OK from VPB).
Video Amplifier PCB
OUTPUTS DESCRIPTION
G1_SUPPLY DC supply about -150 V for driving the G1 of CRTs
G2_SUPPLY DC supply about 1.3 KV for driving the G2 of CRTs
ARC_GND Return (ground) line for the CRT anodes
Convergence/Deflection PCB
INPUTS DESCRIPTION
H_
PARABOLA
Horizontal parabola for use by the dynamic focus amplifier
V_
PARABOLA Vertical parabola for use by the dynamic focus amplifier
System Controller PCB
OUTPUT DESCRIPTION
/HV_OK The high voltage status line. Low = operational HVPS
Low Voltage Power Supply
INPUTS DESCRIPTION
+ 15V + 15 V for use by the HVPS
+ 80V + 80 V for use by the HVPS
- 15V - 15V for use by the HVPS
2-12 Model 200 Service Manual