then release the "
<
" key, the monitor should now be in the factory setting mode (OSD in black
ground with red edge). All adjustment data will be stored automatically, and then power on again,
the monitor will reverse to normal operating state.
6-6. Deflection
Processor
I
401 TDA9111 is an SGS monolithic integrated circuit assembled in a 32 pins
shrunk dual in line plastic package.
I401 controls all the function related to the horizontal and vertical deflection
in a multi-sync monitor.
As can be seen in the block diagram, I401 includes the following function:
•
Auto-sync and auto-processing for positive or negative H. /V. sync polarities on pin 1-2.
•
East/West pincushion signal processing on pin 24.
•
B+ control, on pin14-17, 28.
•
H.PLL lock/unlock identification on pin 8 and safety blanking output on pin12.
•
X-ray protection is on pin 25.
I401, combined with I330 (TDA8172), is a vertical booster to drive the
vertical deflection yoke.
6-7. Pin -Out Description for SGS TDA9111 (I401)
Pin
No
Name
Function
1
H-SYNC
TTL Horizontal Sync Input
2
V-SYNC
TTL Vertical Sync Input
3
HLOCKOUT First PLL Lock/Unlock Output (0V unlock -5V locked)
4
PLL2C
Second PLL Loop Filter
5
Co
Horizontal Oscillator Capacitor
6
Ro
Horizontal Oscillator Resistor
7
PLL1-F
First PLL Loop Filter
8
HLOCK-CAP First PLL Lock /Unlock Time Constant Capacitor
9
HFOCUSCAP Horizontal Dynamic Focus Oscillator Capacitor
10
FOCUSOUT Mixed Horizontal and Vertical Dynamic Focus Output
If this Pin is Ground, the H. and V. Output are Inhibited.
11
H-GND
Horizontal Section Ground
12
H-FLY
Horizontal Fly-back Input (Positive Polarity)
13
H-REF
Horizontal Section Reference Voltage, 8V
14
COMP
B+ Error Amplifier Output for Frequency Compensation & Gain
Setting
15
REGIN
Regulation Input of B+ Control Loop
