Nokia 447ZiPlus Service Manual page 17

17” colour monitor
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6-6. Deflection Processor
I401 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)which is a vertical booster to drive the vertical deflection yoke.
6-7. Pin -Out Description for SGS TDA9109 (I401)
Pin
Name
No
1
H-SYNC
2
V-SYNC
3
HLOCKOUT
4
PLL2C
5
Co
6
Ro
7
PLL1-F
8
HLOCK-CAP
9
HFOCUSCAP
10
FOCUSOUT
11
H-GND
12
H-FLY
13
H-REF
14
COMP
15
REGIN
16
I-SENSE
17
B+GND
18
BREATH
19
V-GND
20
VAGC-CAP
Function
TTL Horizontal Sync Input
TTL Vertical Sync Input
First PLL Lock/Unlock Output (0V unlock -5V locked)
Second PLL Loop Filter
Horizontal Oscillator Capacitor
Horizontal Oscillator Resistor
First PLL Loop Filter
First PLL Lock /Unlock Time Constant Capacitor
Horizontal Dynamic Focus Oscillator Capacitor
Mixed Horizontal and Vertical Dynamic Focus Output
If this Pin is Ground, the H. and V. Output are Inhibited.
Horizontal Section Ground
Horizontal Fly-back Input ( Positive Polarity )
Horizontal Section Reference Voltage ,8V
B+ Error Amplifier Output for Frequency Compensation & Gain Setting
Regulation Input of B+ Control Loop
Sensing of External B+ Switching MOSFET Q440 Source Current
Ground(related to B+ reference adjustment)
DC Breathing Input Control
Vertical Selection Signal Ground
Memory Capacitor for Vertical AUTO-GAIN Control Loop in Vertical
Ramp Generator
15

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