Service Manual 40L2400.pdf

ESQUEMAS ELÉTRICOS PCI Fonte 32/40 L702 820uH/1A

101/2KV C735 101/2KV C735

R735 4R7/1206

L701 470uH/720mA/NC

SB2200 VD741 SB2200 VD741

1

VBL

SB2200   VD742

2

L703Bead-core

SB2200   VD744

SB2200 VD743 SB2200 VD743

R742 4R7/1206

R731 560k/0805

R701 560k/0805 R752 4R7/0805 VD752 1N4148 R702 560k/0805

V751 5A400V

R751 47R/0805

        2

L704 Bead-core

C753 1uF/400V R733 560k/0805

R753 10k/0805

R717 10k/0805

C703 105/0805

R732 560k/0805 C752 68uF/200V

        1

R718 47k/0805

R703 47k/0805

R756 R755 1R/1206 1R/1206

R754 1k/0805

R757 N.C.

R734 27k/0805

6.8V VD751

TP_VLED+

N701

>3V  +12.2Vsb

R704 10R/0805

UVLS

O 16V  8V 

2

R705 10k/0805

1 BKLT_EN

1

VCC

3

5V

FAULT

4

DRV

ENA

GND

VREF

OVP

RT

ISW

16

7 6 5 4 3 2 1

C754 101/0805

15 14 13

<3V

 

6 4 2

LED2+ LED2LED1+ LED1-

XS751 7PIN-2.0mm

TP_BKLT-ENA

 <3V  5 R707 10k/0805

1 BKLT_ADJ

6 7

TP_BKLT-ADJ

R712 10k/0805

PWM

PROT

 ADIM

8

ISEN

TIMER

SSTCMP

 <500mV 

12

V761 1A5/400V

R761 100R/0805

11

R762 0R/1206/NC

10

300mV  R763 1k/0805

9 R716 10k/0805

OZ9902C

R708 100k/0805

C707 C706 R706 C705 C711 C704 R711 101/0805 100k/0805104/0805 225/0805 104/0805 684/0805 33k/0805

C715   102/0805

C714 C713 R713 10k/0805 103/0805 684/0805/NC

C718 684/0805

C716 474/0805

C733 101/0805

R764 2R7/1206

C763 101/0805

R766

R765 2R7/1206

10R/1206

6V8 VD761

Gu;vwxy=z{|}~ 

Fo=6120/Rrt(KΩ)=6120/33=185Khz I_led=300/Risen(Ω)=250mA I_led=Vadim/(5*Risen)

V_adim>1.5V  V_adim<1.5V 

UVLS=75V  OVP=190V 

31

ESQUEMAS ELÉTRICOS PCI Principal 48L2400/DL4845i

Power Control

12V_VCC L803

+12.2V

1

2

FB_300_Ohm_6A

12V_VCC 5V_Stb

C801 0.1uF

R808

Panel Power

4.7K R807 100R 2

POWER-ON/OFF

PWR-ON/OFF

POWER-ON/OFF 10

12V_VCC

C805 NC/10uF/16V

H: On L: Standby

L802 2

33001376

+5.3Vsb 5V_Stb L806 5V_Normal

VCC-Panel FB_4A 1

1

2

5Vstb

R823 47K

1 2 3 4

C827 0.47uF 10 0K 100K

V801

9435A

S S S G

D D D D

8 7 6 5

R820 R82 0

FB_300_Ohm_6A C802

R811 1K

BKLT_ADJ R813 10K 2

B KL T_ AD J

V806 3904

5V_Normal

R814 NC/4.7K

2

1

VBL_CTRL NC/10K H: On L: Off

BKLT_EN

B KL T_ EN

11

        3

R819

1         2

R809   100R

NC/WPM3407

        3

11

V803 3904

BRI_ADJ

V808 VD801   NC/1N4148

0.1uF

V804 NC/3904         2

R812 NC/10K

32

10K

R824

PANEL_ON/OFF R826 10K

12V_Panel C825

C826

10uF

0.1uF