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5. DEFLECTION
A. SYNC PROCESSOR:
H-sync & V-sync input to U1 (uP), then up output the H-out, V-out signal to U401 TDA9113.
The H-out, V-out always are positive.
B. HORIZONTAL PROCESSOR
Fig 3 is the block diagram of IC TDA9113.
The IC TDA9113 output vertical sawtooth and H-Drive signal to produce, H.V deflection.
Meanwhile TDA9113 output. BDRV signal (IC pin 6) that can control B
C. VERTICAL OUTPUT
Fig 4 is the block diagram of IC TDA8172A.
Input vertical sawtooth signal from TDA9113 to TDA8172A, then TDA8172A produce
vertical deflection current.
D. DYNAMIC FOCUS SECTION
The IC TDA4856 can output horizontal and vertical parabolas I
parabolas input to Amp, then output to G4. The amplifier consists of Q806, Q805, Q804,
Q803.
E. HORIZONTAL OUTPUT STAGE
SW1
SW2
SW3
F. FLYBLACK TRANSFORMER
In the primary of FBT, there is about 1150Vpp in the LC resonant interval, It convert to the
secondary of FBT to produce about 26KV for CRT anode voltage.
F<33K
33K<F<36K
L
L
L
H
L
L
36K<F<41K
41K<F<52K
L
H
H
L
H
L
13
+
voltage.
2
C bus controllable. These
52K<F<58K
58K<F<65K
H
H
L
H
H
L
65K<F
H
H
H
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