T601 Secondary-1; Overview; +/- 15 Volts; Distribution - Sony TVP-08 Training Manual

T601 Secondary-1

Overview

There are four secondary windings on T601 PIT. The voltages induced in
these windings are used to power everything in the set, except for the
audio section. The voltages developed here are +/- 15 volts, +/- 22 volts,
+11 volts, +7 volts, +/- 135 volts and +33 volts.

+/- 15 Volts

The voltage from the winding of T601/11 and 12 is applied across D6105
Bridge Rectifier. C6119, C6132 and L6108 filter the positive output of
D6105/3. This output is used for three things. First, it is applied to Q6106/
E, which turns Q6106 ON and allows current to flow through its E-C junc-
tion. It passes through R6141 to RY6002 In Rush Current Limiter Relay.
It turns the relay ON when the voltage is sufficient. If the voltage does not
rise to a sufficient level or there is a problem with Q6106, the set will shut
down. Next it is sent to D6126/A, which is part of the protection circuitry.
Lastly it is sent to CN6105/3, CN6106/5 and CN6104/2 where it is sent to
the D and A boards.
The negative output from D6105/3 goes through R6122, R6123 and R6124,
which are parallel. C6118, C6131 and L6109 then filter this voltage. It is
then output from CN6105/4 and CN6106/6, both of which go to the D
board.
These lines are used to produce other voltages on the D board. These
voltages are +/- 12 volts and +/- 5 volts.
+ 11 Volts
The voltage from the winding of T601/11 and 12 is applied across D6102
through L6103 and L6104. C6122, C6133 and L6110 filter the rectified
voltage. This voltage is used on the G board by the regulation and pro-
tection circuits and it exits the G board at CN6104/11 to the A board.
The +11 volt supply is used on the A board to produce the +9 volt supply.
21
+/- 22 Volts
The voltage from the winding of T601/14 and 15 is applied across D6108
through PS6105 and PS6106. C6125, C6135 and L6112 filter the recti-
fied voltage. The voltage is used on the G board by the protection circuit
and it exits the G board at CN6105/1.
The winding of T601/14 and 15 is applied across D6117 through PS6105
and PS6106. C6124, C6134 and L6111 filter the rectified voltage which
leaves the G board at CN6105/6.
The +/- 22volt lines are used to power only the Convergence amplifiers on
the D board.

Distribution

The table below shows the circuits powered by the voltages previously
discussed:
Supply Circuits
+15 Vertical Out IC5004, 12 Volt regulator IC5002 (D board), IC502 12
Volt regulator (A board)
-15 Vertical Out IC5004, -12 Volt regulator IC5001
+12(D) V, H, B+, HV, and IK protection circuits, Shading, HV control, PWM,
H Saw, Auto Registration sense and switching, 5 Volt regulator
IC8004
H Jungle IC507, VM and IK buffers
+12V(A)
-12 Shading, HV control, H Saw, H pulse shaper,-5 Volt regulator IC8003
BD board (Auto Registration)
+5
-5 BD board (Auto Registration)
+11 Off Mute Q547, 9 Volt regulator IC505
TU501, TU502 Video Processing, AVU switch
+9
+22 Convergence Amplifiers IC5005 and IC5006
Convergence Amplifiers IC5005 and IC5006
-22