LG 177V, Руководство по обслуживанию

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TDA4857
TDA4857 Autosync Deflection Controller
TDA4857
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
23
22
25
24
21
20
19
18
17
32
31
30
29
28
27
26
VREF
VAGC
SGND
VCAP
VSMOD
i.c
SDA
SCL
HUNLOCK
FOCUS
HSMOD
HPLL2
HCAP
HREF
HBUF
HPLL1
EWDRV
VOUT2
XSEL
VCC
VOUT1
VSYNC
HSYNC
CLBL
PGND
HFLB
XRAY
BOP
BSENS
BIN
BDRV
HDRV
SYMBOL
HFLB
XRAY
BOP
BSENS
BIN
BDRV
PGND
HDRV
XSEL
Vcc
EWDRV
VOUT2
VOUT1
VSYNC
HSYNC
CLBL
DESCRIPTION
Horizontal Flyback Input
X-ray Protection Input
B+ Control OTA Output
B+ Control Comparator Input
B+ Control OTA Input
B+ Control Driver Output
Power Ground
Horizontal Driver Output
Select Input for X-ray reset
Supply Voltage
EW Waveform Output
Vertical Output 2 (Ascending Sawtooth)
Vertical Output 1 (Descending Sawtooth)
Vertical Synchronization Input
Horizontal / Composite Synchronization Input
Video Clamping Pulse / V-Blanking Output
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SYMBOL
HUNLOCK
SCL
SDA
i.c
VSMOD
VAGC
VREF
VCAP
SGND
HPLL1
HBUF
HREF
HCAP
HPLL 2
HSMOD
FOCUS
DESCRIPTION
H-Synchronization Unlock/Protection/V-Blanking Output
I
2
C-Bus Clock Input
I
2
C-Bus Data Input
Internally connected; nite 1
Input for EHT Compensation (Via V-Size)
External Capacitor for V-Amplitude Control
External Resistor for Vertical Oscillator
External Capacitor for Vertical Oscillator
Signal Ground
External Filter for PLL1
Buffered F/V Voltage Output
Reference Current for Horizontal Oscillator
External Capacitor for Horizontal Oscillator
External Filter for PLL2 / Soft Start
Input for EHT Compensation (Via H-Size)
Output for Vertical Focus
PIN
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin Configuration
1
32