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Overall Power Supply Block
Figure 1
The Bridge rectifiers and Standby supply are located on the Input Panel. The Main Power supply is
located on the Large Signal panel. The Standby supply produces +5 volt standby voltage. When the
set is turned On, the Standby line goes Low, switching the Standby supply to produce +15 volt, +9
volt, and +5.2 volt sources. It also turns the Main Power supply On, which produces the Audio, +35,-
35, +22, -22, +130VS, and +130VHV supplies. The +130VS supply is for the Horizontal Output
section. The +130VHV supplies power to the High Voltage section.
AC Input Board
Figure 2
AC Power is fed to the Input Panel. A 5-amp fuse, 1000, provides protection. Choke 5000 provides
filtering for the AC. 1003,1002,1001, and 3011 provide protection against Line Surges. Bridge 6001
rectifies the voltage for the Standby Power supply. Resistors 3009, 3014, 3013, and 3010 provide
current limiting when power is first applied to the set. Bridge 6000 rectifies the voltage for the Main
power supply. Startup voltage for the Main Power supply is taken from the neutral side of the AC line.
Fuse 1004 provides protection for the Standby Power supply.
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