Service Manual
29
8.3 U950 (LD7575, stand by Power Controller )
Pin
Symbol
I/O
Description
1
RT
This pin is to program the switching
frequency
2
COMP
I
Voltage feedback pin,By connecting a
photo-coupler to close the control loop
and achieve the regulation
3
CS
I
Current sence pin
4
GND
5
OUT
O
PWM output ,Gate drive output to drive
the external MOSFET
6
VCC
I
Power supply
7
NC
Unconnected pin
8
HV
I
PWM output
8.4 U1 ( INL836, CCFL Inverter controller IC)
Pin
Symbol
I/O
Description
1
SST_CMP
I
Enable, soft start time and
compensation of current error amplifier
2
RT
I
Timing capacitor to set operating
frequency
3
GNDA
Ground
4
DRV2
O
N MOSFET Driver output
5
DRV1
O
N MOSFET Driver output
6
VDDA
I
Supply voltage input
7
VSEN_DIM
I
Voltage sense, input analog signal for
PWM driving control
8
ISEN
I
Lamp current detection & control
8.5 U850 (SG6901 Main Power controller IC)
Содержание 2209WA - UltraSharp - 22" LCD Monitor
Страница 1: ...Service Manual 0 Service Manual LCD Monitor 2209WA ...
Страница 25: ...Service Manual 24 8 Key Parts Pin Assignments 8 1 U105 TSUMU58EHJ LF ...
Страница 26: ...Service Manual 25 ...
Страница 27: ...Service Manual 26 ...
Страница 31: ...Service Manual 30 ...
Страница 32: ...Service Manual 31 Chapter 4 Disassembly Assembly 1 Exploded Diagram ...
Страница 36: ...Service Manual 35 Note 1 The arrows point out the direction of assembly ...
Страница 44: ...Service Manual 43 ...
Страница 80: ...Service Manual 79 ...
Страница 81: ...Service Manual 80 Attachment 3 PCB Layout power inverter bd inverter board Top Layer Bottom Layer ...
Страница 82: ...Service Manual 81 Main board Top Layer ...
Страница 83: ...Service Manual 82 Bottom Layer ...
Страница 84: ...Service Manual 83 Keypad USB convert board ...
Страница 85: ...Service Manual 84 ...