LG 42PT250B Service Manual page 19

P600
SMAW200-H18S1
1 2
3 4
120-ohm
5 6
7 8
+3.3V_ST C607
9 10
0.1uF
16V
11 12
120-ohm
R600
13 14
10K
15 16
RL_ON
17 18 C608
5V_ON
0.1uF
C603 16V
C604
0.1uF
0.1uF
19
16V 16V
P_17V
C610
C600 C601
10uF
10uF 0.1uF
25V
25V 50V R617
10K
1%
R620
R1
180K
C638
22pF VREG5
50V
R621
22K
1%
C639 C640
R2
1uF 3300pF
10V 50V
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright ©
Power Wafer
P_17V
L601
+5V
C612
C609
0.1uF
ERROR_DET 10uF
10V 16V
+5V_ST
L602
AC_DET
+5V
C648
C617 C618
10uF
10uF 0.1uF
R601
25V 50V
25V 10K
R603
59K
R1
1%
C619
22pF
50V
R604
17.4K
1%
R2
Vout=0.765*(1+R1/R2)
IC607
AZ1117BH-ADJTRE1
7V
IC600 INPUT ADJ/GND
3 1
TPS54327DDAR
[EP]GND
2
OUTPUT
R1
EN VIN
1 8
R610
110
VFB VBST
2 7 R619
1
L606
C641
NR5040T3R3N
0.1uF
SW 3.3uH C651
3 6 50V 0.1uF
16V
C613 C642 C643
10uF 10uF
0.1uF
SS GND
16V 16V
16V
4 5
Vout=1.25*(1+R2/R1)
Vout=0.765*(1+R1/R2)
+3.3V_TU +3.3V_DE
IC608
AP2121N-3.3TRE1
VIN VOUT
3 READY 2
1
C644 C645 C650
10uF 0.1uF 1uF
GND
10V 16V 6.3V
READY READY READY
+3.3V Multi
+3.3V +3.3V_TU
IC603
TPS54327DDAR
[EP]GND
EN VIN
1 8
VFB VBST
2 7
L603
C624
NR5040T2R2N
0.1uF
2.2uH
VREG5 SW
50V
3 6
C626 C627
C649
10uF
0.1uF
10uF
SS GND 16V
16V 16V
4 5
C621 C622
1uF 3300pF
10V 50V
+5V_TU
+5V
R2
R609
330
C646
C628 C629
10uF 10uF 0.1uF
25V 25V 50V
R1
R611 R612
100 62K
1% 1%
C630
100pF
50V
R613
R2
100K
1%
3.3V_AVDD / 2.5AVDD
+2.5V_AVDD
+3.3V_AVDD IC601
+3.3V
TJ3940S-2.5V-3L
VIN VOUT
3 2
L600
1
120-ohm
C605 C606
C602 Power Main
GND
0.1uF 10uF
0.1uF
16V 6.3V
16V
1.53V DDR
+1.5V_DDR_IN
+3.3V
IC604
AP1117EG-13
IN OUT
3 2
C623 1
R608
10uF
ADJ/GND 1
6.3V
C625
R607
R1 22uF
1K
R605
1% 6.3V
150
R2 1%
R606
75
1%
Vout=1.25*(1+R2/R1)
1.26V Tuner
+3.3V_DE
+3.3V_TU +1.2V_DE
IC606
L604 AZ1117BH-ADJTRE1
120-ohm
2A
R2
INPUT ADJ/GND
3 1
C631
R616
2
10uF 10
6.3V OUTPUT R1
R615
1.2K
R614
1
C634
0.1uF
16V
Vout=1.25*(1+R2/R1)
1.24V Core
+1.10V_VDDC
IC605
TPS54327DDAR
[EP]GND
R618
10K
EN VIN
1 8
VFB VBST
2 7
L605
C635
NR5040T3R3N
0.1uF
VREG5 SW 3.3uH
3 6 50V
C647 C636 C637
10uF 10uF 0.1uF
SS GND
16V 16V
4 5 16V
C632 C633
1uF 3300pF
10V 50V
Vout=0.765*(1+R1/R2)
3.3Vst
+5V_ST +3.3V_ST
IC602
AP2121N-3.3TRE1
R602 VIN VOUT
3 2
1
C615 1 C620
C616
10uF 0.1uF 1uF
C611 GND
16V
10V 6.3V
10uF
6.3V
GP4 LM1 20110531
7
POWER 5
LGE Internal Use Only