42LV4400 LC420EUG-RDV2-7R1 - LG TV Service Manual (repair manual). Page 125

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

MODEL

Sheet

REV:

of

CIRCUITY

PCB REV:

PCB FILE :

PCB P/ N:
ECN NO:

TECHNOLOGY

APPROVED BY:

CHECKED BY:

SCH FILE :

DATE:

DESIGN BY:

MODIFY HISTORY

47LV4400(364705220150)

17

17

017122714132.BRD

2.0

2.0

364213320150_PCN0000627.DSN

017122714132

42LV4400(364213320150)

PCN0000627 / PCN0000637

MODEL

Sheet

REV:

of

CIRCUITY

PCB REV:

PCB FILE :

PCB P/ N:
ECN NO:

TECHNOLOGY

APPROVED BY:

CHECKED BY:

SCH FILE :

DATE:

DESIGN BY:

MODIFY HISTORY

47LV4400(364705220150)

17

17

017122714132.BRD

2.0

2.0

364213320150_PCN0000627.DSN

017122714132

42LV4400(364213320150)

PCN0000627 / PCN0000637

MODEL

Sheet

REV:

of

CIRCUITY

PCB REV:

PCB FILE :

PCB P/ N:
ECN NO:

TECHNOLOGY

APPROVED BY:

CHECKED BY:

SCH FILE :

DATE:

DESIGN BY:

MODIFY HISTORY

47LV4400(364705220150)

17

17

017122714132.BRD

2.0

2.0

364213320150_PCN0000627.DSN

017122714132

42LV4400(364213320150)

PCN0000627 / PCN0000637

2010/10/12

Randy update :
1.Page1 :move CE2 behine F2 

5.Page8 :FB13 from 47 ohm change to 150 ohm

8.Page16 :reverse panel setting modify TR115 NC-->0

、TR119 0-->NC、TR116 0-->NC、TR120 NC-->0

2.Page7 :Simplify HDMI power circuit DEL D54

、D57、C208、C191、C190

3.Page7 :simplify HPD circuit DEL R393

、R344、Q49、R379、R341、Q48、R382、R308、Q39

4.Page12 :add gpio control line out mute function(add R329

、D28)

6.Page9 :D22  NC-->LL4148WP (speed up MOS turn off time)
7.Page9 :TR10 18K-->NC

9.Page10 :SPDIF power from HDMI_5V change to AV33
10.Page11 :R210 pull high power change to VGA_PLUGPWR

2010/10/15

Randy update :
1.Page16 :supply enough wheeling current to avoid TPS65168 to go into short curcit protection.
(ADD TR150

、TD1)

2.Page7 :change other I2C bus avoid scramble with EEPROM(24C16)

。ADD R341、R344

3.Page14 :change J14 footprint
4.Page14 :KEY PAD path and voltage modify,R365,R370(24K ohm ->0 ohm); R396,R395(47K ohm ->1.6K 1% ohm)

2010/10/20

Randy update :
1.Page14 :modify LED backlight PWR circuit(Add R360

、ZD23、C71)

2010/10/26

Brandon update :
1. CE1, CE2, CE10, CE11, CE12, CE13, CE14, CE15, CE16, CE17, CE18, CE20, CE23, CE25, CE31, CE77, CE124, 
   CE129, CE130, CE131, CE132 change SMD type to DIP type.(Page 1, 2, 3, 5, 13)

2.Page14 :Modify power indicator power LED_PWR --> +5V_TUNER, delete R360, ZD23, C71
3.Page 1 :Add R11

Brandon update :

2.Page1&15: Modify PWM_DIM net name

2010/10/30

Brandon update :
1.Page14: Modify key pad circuit; change J3&J9 90'-->180'
2.Page1:  Delete H11
3.Page12: Modify line out driver circuit

2010/11/1

1.Page7: Modify HDMI power circuit add D54

、D57、C208、C191、C190

2010/11/2

Brandon update :
1.Page12: Modify line out driver power(Add L82, C567, C569, CE135, R837, CE133, C570, ZD8, R874, CE134, 
C568)

2010/11/3

Randy update :
1.Page16 : TR150 change to 620ohm, add TR151(620ohm),TR102 change to 2Kohm,TR99

、TR100 change to 30ohm

TR120 change to 330ohm, TQ1

、TQ3 change parts

2.Page12: CE132 change to C556, CE134 change to C571
3.Page13: CE131 change to C555

2010/11/5

Randy update :
1.Page13: Mute circuit add D29
2.Page14: Modify R358 placement