T601 Secondary-2; Volts; Distribution - Sony TVP-08 Training Manual

T601 Secondary-2

+7 Volts

The voltage from the winding of T601/17 and 18 is applied across D6109
through PS6101 and PS6102. C6117, C6126 and L6107 filter the recti-
fied voltage. The voltage is used on the G board by the protection circuit
and exits the G board at CN6104/4 and 5.
The +7 volt supply is used to produce three other voltages on the A board.
They are Def +5 volts, +5 volts and +3.3 volts.
+135 Volts
The voltage from the winding of T601/8 and 9 is applied across D6104
and D6107. C6114, C6123 and L6106 filter the rectified voltage. The
voltage is used on the G board by the protection and regulation circuits
and is also used to produce the +33 volt line. It exits the G board at
CN6106/1.
The center tap of the secondary located at T601/7 is connected through
R6118. As the load draws more current, the voltage across R6118 falls
closer to being negative. The OCP circuit monitors this voltage.
-135 Volts
The voltage from the winding of T601/8 and 9 is applied across D6103
and D6106. C6113, C6127 and L6105 filter the rectified voltage. It exits
the G board at CN6106/3.
+33 Volts
The +135 volt line goes through R6111 Current Limiting resistor. On the
other side of R6111 is D6110 Zener Diode and C6116. The zener is used
to drop the +135 volts down to 33 volts. The voltage exits the G board at
CN6104/9.
23

Distribution

The table below shows the circuits that are powered by the voltages pre-
viously discussed:
Name Circuits
+7 Def +5V regulator IC503, +5V regulator, 3.3V regulator
VDSP IC512, H BLK Delay IC517, ½ H + Odd/Even IC508, Vout
Def +5
Reference IC5004, BD board
+5 TU501, TU502, Sync Switch IC509, IC1304 Frame Memory IC1304,
A/D Converter IC1309, BM board, BD board
+3.3 3D Comb Filter IC1306, BR board, BM board
FBT T8003, LOT T8002, HV Drive, HV out
+135
-135 Pincushion, Horizontal, HV Regulation
+33 TU501, TU502