LG PF1500 Service Manual page 21

ST_BY Power
DC_19V
IC501
TPS54331D
16V
0.1uF
C524
BOOT
1
L509 VIN:3.5V~28V
VIN
2
BLM18PG121SN1D R509
330K EN
3
SS/TR
4
R517
C553 91K
C550 C551 C552 C525
0.1uF
10uF 10uF 10uF 0.015uF
25V
25V 25V 25V 50V
Vout=0.8*(1+R1/R2)
+1.2V_MTK_CORE
IC504
RT8298ZQW [EP]GND
FB GND
1 14
PGOOD BG
R516
2 13
0
R519
POWER_ON/OFF1 C578 EN/SYNC VCC
10K
3 12
0.1uF
16V
L510 Placed on SMD-TOP VIN_1 BOOT C577
4 11
BLM18PG121SN1D 1uF
50V
C574 C575 C576 VIN_2 SW_3
10uF 10uF 0.1uF
5 10
25V 25V 25V
VIN_3 SW_2
6 9
NC 6A SW_1
7 8
Vout=0.808*(1+R1/R2)=1.22
+1.2V_WARP
R523
22
POWER_ON/OFF1
1/16W
5%
C587
0.1uF IC1512
25V
TPS54331D
BOOT
1 8
BLM18PG121SN1D
L530 Placed on SMD-TOP VIN
2 7
3A
C584 C585 C586 EN
10uF 10uF 0.1uF
3 6
25V 25V 25V
SS/TR
4 5
C588
0.015uF
50V
+5V_Normal
RT8289GSP
C664
0.01uF
50V
BOOT
1
NC_1
2
NC_2
3
5A
FB
4
BLM18PG121SN1D
L550
1%
51K
C627 C628 C630 R533
10uF 10uF 0.1uF
25V 25V 25V R2
C629
150pF
50V
FAN_POWER
FAN_19V
L506
UBW2012-121F
INPUT
EN
C526 C527 C532
10uF 10uF 0.1uF
25V 25V 25V
R535
1K
POWER_ON/OFF4
Battery_DET LOW -> POWER_ON/OFF4 : LOW
Battery_MODE : HIGH
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
+3.5V_ST
NR8040T4R7N
L505
MAX 2.2A
6.8uH
D502 C596
SMAB34 C549 C529 C530
22uF
22uF C600 10uF 16V
40V 10V
10V 0.1uF 10V 0.1uF
16V
PH
8
R526
10K
GND 1%
@3A
7
COMP
6
VSENSE
5
C534
C528
1000pF
47pF R531
50V
50V 3K
R525
1%
51K
Si4800BDY Q504
S1 1 8 D8 R521
100K
S2 2 7 D7 1%
S3 3 6 D6 R2
G D5
4 5
To MAIN
R520 +1.2V_MTK_CORE
C583 51K
1%
C599 +1.2V_MTK_AVDD
1uF
R1 47pF
50V
50V
L513
L504
2uH
BLM18PG121SN1D
C518
C579 C580 C581 C582 10uF
10uF 10uF 10uF 10uF
10V 10V 10V 10V
+1.2V_WARP
L531
4.7uH
C598
C591 C592 C593 C597 D506
10uF 10uF 10uF 10uF 0.1uF 2.5V
10V 10V 10V 10V
25V
PH
BLM18PG121SN1D
R1
GND
R2
COMP
VSENSE
C589 C590
47pF 4700pF
50V 50V
R503
8.2K
Vout=0.8*(1+R1/R2)
Switching Frequency : 570kHz
+5V_NORMAL
IC506
[EP]GND
L551
4.7uH
SW
8
125C 125C
C631 C632 C633 C648 C634
VIN ZD504
7 22uF 10uF 10uF 0.1uF
22uF 5V
16V
10V 10V 10V 10V
GND
6
EN 1K
5
POWER_ON/OFF1
R534
C635
0.1uF
16V
R1
Vout=1.222*(1+R1/R2)
IC8102
LM29152RS-ADJ
FAN_POWER
OUTPUT
2 4
FLG/ADJ
C535 C538
1 5
0.1uF 10uF
25V
25V
3
R522
3.3K R2
GND
1%
R515
300
1%
R1
Vout=1.24*(1+R2/R1)
DDR MAIN 1.5V
POWER_ON/OFF2
C604
0.1uF
C605
16V
0.1uF
16V
L571
2.2uH
VIN_1 PH_3
L570 1 12
THERMAL
VIN_2 PH_2
2 17 11 NR5040T2R2N
BLM18PG121SN1D GND_1 PH_1
3A 3 10 C608 C609 C610 C611
C602 C603 IC508
C601 GND_2 TPS54319TRE SS/TR 10uF 10uF 10uF 10uF
4 9
10uF 10uF 0.1uF 10V 10V 10V 10V
C606
10V 16V
10V 0.01uF
50V
R541
1/16W 330K 5%
C607
R542
4700pF
15K
R1
1/16W 5% 50V
3A
R544
56K R2
Vout=0.827*(1+R1/R2)=1.521V
1/16W
1%
+3.3V_NORMAL
R510
1.8K
OPT
R512 C565
POWER_ON/OFF3 1K 0.1uF
16V L511
6.8uH
IC502
16V
0.1uF TPS54331D
C568
D501 C569 C570
SMAB34 10uF 10uF
R513
BOOT PH 40V 10V 10V
1 8 16K
L502 R1
BLM18PG121SN1D
VIN GND
Placed on SMD-TOP
2 7
C562 C563 C564 EN 3A COMP
10uF 10uF 0.1uF 3 6
25V 25V 25V
C662
1000pF
SS/TR VSENSE
50V
4 5
C665
C573
10pF R528 R514
0.015uF 50V 51K 5.1K
50V
R2
Vout=0.8*(1+R1/R2)
+3.3V_N_SUB
R561
1.8K
OPT
C557
R560
POWER_ON/OFF3 1K 0.1uF
16V L516
6.8uH
IC507
16V
TPS54331D
0.1uF
C558
D503
C667 C668 C669
SMAB34 R563
BOOT PH
1 8 40V 16K 10uF 10uF 10uF
L500
R1 10V 10V 10V
Placed on SMD-TOP VIN GND
2 7
3A
C554 C555 C556
EN COMP
10uF 10uF 0.1uF 3 6
25V 25V 25V C661
1000pF
SS/TR VSENSE
50V
4 5
C660
C559
10pF R562 R564
0.015uF 51K 5.1K
50V
50V
R2
Vout=0.8*(1+R1/R2)
+1.8V_WARP
+1.8V_WARP
IC509
AP2132MP-2.5TRG1
[EP]
POWER_ON/OFF2
R555
R554
10K 5.1K
1 8 R2
1%
PG GND
2 7
R1
L1531
EN ADJ R556
BLM18PG121SN1D 10.5K
3 6 1%
VIN VOUT
2A
C653
4 5 C654
C621
10uF 0.1uF
10uF
VCTRL NC 10V
10V C623 16V
EAN61387601
10uF C626
10V 1uF
Vout=0.6*(1+R1/R2)
$0.07
+0.9V_DDR_VREF
IC505
+0.9V_DDR_VREF
POWER_ON/OFF2 AP2132MP-2.5TRG1 [EP]
10K R539
20K
R530
1 8 R2
1%
GND
PG
2 7
R1
ADJ R538
EN
L3016 10K
BLM18PG121SN1D 3 6 1%
VIN VOUT
C614
2A C620 C617
10uF 4 5
10uF 0.1uF
10V C615
10V 16V
10uF VCTRL NC
10V EAN61387601
C616
1uF
Vout=0.6*(1+R1/R2)
$0.07
3.5V Wake Switch_to WiFi
+3.5V_ST +3.5V_ST_WAKE
Q501
PMV48XP
C501 C502
R502 ZD500
10K 4.7uF 0.1uF 5V
G
10V 16V
+1.5V_DDR OPT
R501
1.8K
C MMBT3904(NXP)
Q500 R500
10K
B WOL_CTL
C500
E
C613 4.7uF
0.1uF
10V
16V OPT
C612
100pF MAIN AVDD 3.3V
50V
+3.5V_ST_WAKE
IC500 AVDD_33SB
AP2121N-3.3TRE1
VIN VOUT
3 2
C510 1
C512
0.1uF C506
GND ZD502
16V 1uF 5V 0.1uF
10V
MAIN VDD 3.3V
+3.3V_NORMAL VDD3V3
L501
60mA
BLM18PG121SN1D
C505 C507 C508 ZD519
+3.3V_NORMAL C503
10uF 0.1uF 2.2uF 5V
10uF
VDD3V3
Arround VDD3V3
C571 C572
10uF 10uF
10V 10V
ZD520 ZD521
ZD522 ZD523
5V 5V 5V 5V
TUNER 3.3V_TU
IC6503
+3.3V_N_SUB +3.3V_TUNER AZ1117BH-1.8TRE1
L6503
BLM18PG121SN1D
IN OUT
3 2
C6530 ZD516 C6531 1
C6529 0.1uF 5V
C6526 22uF
10V 16V 0.1uF ADJ/GND
0.1uF
125C
16V C6538 C6542
10uF 0.1uF
10V
else : Max 0.7A
Close to the tuner
Power_DET
+3.3V_N_SUB
OPT
DC_19V
R547
100K
C670 R545
IC510
0.1uF 20K
16V
1% APX803D29
VCC
3
C594 1
0.1uF
GND
R546
16V
10K
5%
On-semi
BY Battery_DET
Battery_DET
High : Adapter(16.5V over)
Low : Battery(16.5V under)
DC_19V
APX803D29
R505
VCC
3
51K 1%
C523 R508 GND
1uF 12K
25V 1%
Battery_DET
FAN_POWER_BATTERY MODE
FAN_19V
Q503
AO3407B
D510
2.5V
C537 G
10uF Battery_DET
25V
C
R536
10K
Q502 B
MMBT3904(NXP)
Battery_DET
E
NC_4.5 MID
Power SEQUENCE
POWER_ON/OFF1 : +1.2V_MTK_CORE, +1.2V_WARP
D508
2.5V
POWER_ON/OFF2 : +1.5V_DDR, +1.8V_WARP
POWER_ON/OFF3 : +3.3V_NORMAL, +3.3V_N_SUB
POWER_ON/OFF4 : 19V_FAN
SOC_RESET
<MAIN 19V>
P1203
12507WR-06L
1
2
DC_19V
3
L1201
UBW2012-121F
4
C1214 C1215 C1216
5 C1204 C1211
10uF 10uF
0.1uF 0.1uF 10uF
50V 50V 25V 25V 25V
6
7
MHL 1.2V
+3.3V_N_SUB 1.2V_MHL
IC6400
AZ1117BH-1.2TRE1
IN OUT
GND/ADJ
C6402
0.1uF
16V
C6403 C6401
10uF 0.1uF
16V
10V
To EMMC
To WARP
+1.8V_TU
3.3V_EMMC +3.3V_WARP
+3.3V_N_SUB
+3.3V_NORMAL
R6531
L507 L503
BLM18PG121SN1D
1 BLM18PG121SN1D
C531 C533
C6546 C6548
0.1uF
0.1uF
10uF 10uF
16V 16V
10V 10V
+3.5V_ST
R549
10K
R548
POWER_DET
100
RESET
2
C595
0.1uF
16V
not to RESET at 8kV ESD
+3.3V_N_SUB
IC512
R507
10K
Battery_DET
R506
RESET
2
3.14V
1 100 1%
C536
0.1uF
16V
FAN_POWER
L508
UBW2012-121F
C522
C540
25V
10uF
0.1uF
25V
Battery_MODE
AFTER POWER_ON/OFF4 : LOW,
100ms delay and Battery_MODE : HIGH
+5V_NORMAL
+0.9V_DDR_VREF
+3.3V_WARP
PROJ_ON
PF1500-JE 2014.05.19
POWER 4 10