Horizontal Deflection Circuit - Sony KDP-51WS550 Training Manual

AX-1 Horizontal Deflection Circuit
MA BOARD
IC0401
Y/C
CRT DRIVE
4 12
CN0001
A BOARD
H-DY H-DY
G R
C5414
C5416
+ +
L5405
R5435
C5419
D BOARD
Horizontal Drive Circuit
(Reference Figure 7-2)
The operation of the horizontal circuit begins on the MA-board at IC0401/pin4 where the H-Drive signal is developed.
The 33.75KHz horizontal oscillator is in the Y/C CRT drive IC0491. IC0401/pin 4 outputs a 1Vpp rectangular
waveform (H-DRV). The H-DRV signal passes through the A-board and is then applied to the D-board. On the
D-board, the H-DRV waveform is amplified through Q5008 and Q5005, and then applied to buffer Q5004.
The MOSFET driver Q5006 and the output transistor Q5001 amplify the signal to provide sufficient current to
drive the HOT T5200 and the H-DY deflection yoke.
At the output stage, the HOT T5200 has secondary windings supplying filament voltage, +/-15V for the vertical
driver IC5004 power supplies, and the horizontal centering circuit IC5005 for horizontal centering on CRT.
R5020
CN5004
CN2006
C5016
2
CN2005
1Vpp
D5005
400Vpp
R5415 C5410
L5403
H-DY
B
FROM
CENTERING
IC5402
PS5401
+135V
FIGURE 7-2 - HORIZONTAL DEFLECTION AND PINCUSHION CIRCUITS
R5019
R5021
C5015
Q5005
Q5008
Q5009
D5003
Q5001
H-OUT
HOT
T5200
12
13
11
8
10
9
3
D6607
16
D5202
C6616
15
C6617
14
Q5201
+
3
-
R5208
D5201
3.5Vpp
u s
H-PULSE
39
7. AX-1 Deflection Circuits
45Vpp
12V
(HDT)
T5001
7
Q5004
12Vpp
R5025
R5031
+135V 6
R6604
I
+
R6605
D6604
R6602 C6607
+5V (CENTERING IC4502)
D6602
C6604
+
C6602
+15V
TO IC5101
VERTICAL
+
-15V
DRIVE
+
D?
IC5201
IC5201
7 10
+
-
6
14
33.7tkHz
EW_PARA
10Vdc
4
1
HEATER
CN5003/
O
IC6602
PIN 4
G
-5V (CENTERING IC5402)
R5252
11 R5251
+
-
12
R5221
R5223
0.2Vpp
60Hz
TVP16.7-2 11/11/03