LG 32LN54XX / 32LN5400 / 32LN540B / 32LN541B (CHASSIS:LB36B) Service Manual ▷ View online
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.
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.
SC1_SOG_IN
CI_TS_DATA[0]
PCM_D[6]
PCM_5V_CTL
/PCM_CE
SC1_FB
CI_TS_CLK
PCM_A[10]
PCM_A[9]
HP_LOUT
CI_TS_DATA[2]
CI_TS_SYNC
PCM_A[13]
SC1_ID
PCM_D[1]
HP_DET
SCART1_MUTE
PCM_D[5]
/PCM_WE
SC1_CVBS_IN
/PCM_IRQA
PCM_D[3]
PCM_D[0]
/PCM_CD
CI_TS_DATA[5]
PCM_D[2]
PCM_A[14]
CI_TS_DATA[4]
SCART1_Lout
/PCM_REG
HP_ROUT
/PCM_IOWR
CI_TS_DATA[1]
PCM_RST
PCM_A[12]
CI_TS_VAL
CI_TS_DATA[3]
/PCM_WAIT
SCART1_Rout
CI_TS_DATA[6]
PCM_D[4]
PCM_A[8]
DTV/MNT_VOUT
PCM_D[7]
CI_DET
/PCM_OE
SIDE_HP_MUTE
CI_TS_DATA[7]
S2_RESET
/PCM_IORD
PCM_A[11]
SC1_B+/COMP1_Pb+
SC1_G+/COMP1_Y+
SC1_R+/COMP1_Pr+
SC1/COMP1_L_IN
SC1/COMP1_DET
SC1/COMP1_R_IN
FE_TS_DATA[1]
FE_TS_DATA[2]
FE_TS_DATA[3]
FE_TS_DATA[4]
FE_TS_DATA[5]
FE_TS_DATA[6]
FE_TS_DATA[7]
2012.07.02
TP_NON_EN
3
NC4_S7LRM
TP for Headphone
TP for S2
TP for CI slot
TP for NON-EU models(except EU and China)
TP for SCART
TP for FE_TS_DATA
THERMAL
THERMAL
THERMAL
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.
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.
Power_PD2
2012/09/19
4
NC4_S7LRM
R403
1.5K
1.5K
1%
PD_+24V
Q407
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
R491
0
C448
3300pF
50V
IC407
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
+12V
C422
0.1uF
16V
0.1uF
16V
OPT
R441
75K
1/16W
1%
R426
10K
10K
+3.5V_ST
C424
330pF
50V
IC403
TPS54319TRE
1
VIN_1
3
GND_1
7
COMP
9
SS/TR
10
PH_1
11
PH_2
12
PH_3
13
BOOT
14
PWRGD
15
EN
16
VIN_3
5
AGND
8
RT/CLK
6
VSENSE
4
GND_2
2
VIN_2
17
EP[GND]
Q403
AO3435
FET_2.5V_AOS
G
D
S
+3.3V_Normal
PANEL_VCC
Q409
AO3407A
G
D
S
R402
300
300
RESET_IC_SOC_RESET
L413
CIC21J501NE
PWM_DIM
Q401
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
R419
1K
C406
0.1uF
16V
R457
4.3K
4.3K
1/16W
1%
1%
R412
3.9K
PWM_DIM_PULL_DOWN
R417
4.7K
OPT
4.7K
OPT
+1.5V_DDR
R432
330K
1/16W
5%
R462
10K
L404
CIC21J501NE
R430
10K
10K
P401
SMAW200-H18S1
14
12V
9
24V
4
PDIM#1
18
GND
13
12V
8
GND
3
3.5V
17
GND
12
GND
7
GND
2
DRV ON
16
N.C
11
GND
6
PDIM#2
1
PWR ON
15
12V
10
24V
5
3.5V
19
.
+24V
C440
0.1uF
16V
0.1uF
16V
Q400
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
C417-*1
10uF 10V
CAP_10uF_X7R
R489
10K
+3.5V_ST
R439
33K
R453
27K
1%
R445
2.2K
IC409
NCP803SN293
PD_+24V_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
C412
0.1uF
16V
0.1uF
16V
PD_+24V
C447
0.33uF
16V
R443
10K
10K
+12V
INV_CTL
L408
CIC21J501NE
R448
2.7K
2.7K
1%
PD_+12V
+3.5V_ST
R461
10K
10K
OPT
R440
5.6K
+3.5V_ST
R421
10K
10K
R488
100K
100K
Q405
MMBT3904(NXP)
E
B
C
L412
CIS21J121
120
C403-*1
10uF 10V
CAP_10uF_X7R
R428
10K
10K
C411
0.1uF
16V
0.1uF
16V
C426
100pF
50V
OPT
R410
100K
C441
0.1uF
16V
C413
0.047uF
25V
0.047uF
25V
L403
BLM18PG121SN1D
C444
0.1uF
16V
0.1uF
16V
+3.3V_Normal
+3.3V_Normal
Q403-*1
DMP2130L
FET_2.5V_DIODE
G
D
S
IC408
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
R450
0
5%
PD_+3.5V
R447
1.2K
1.2K
1%
PD_+12V
560pF
C467
50V
L402
MLB-201209-0120P-N2
R414
10K
10K
+12V
+5V_Normal
POWER_ON/OFF_1
C418
0.1uF
50V
+1.10V_VDDC
POWER_DET
RL_ON
C420
22uF
16V
22uF
16V
R413
20K
20K
IC408-*1
APX803D29
PWR_DET_ON_DIODES
1
GND
3
VCC
2
RESET
+3.3V_Normal
+12V
R480
100
100
PD_+24V
R454
11K 1%
R456
4.7K
1/16W
1%
1/16W
1%
+24V
+3.5V_ST
L407
MLB-201209-0120P-N2
+3.5V_ST
+3.3V_Normal
USB1_CTL
R438
22K
22K
R433
10K
10K
R436
15K
15K
+3.5V_ST
C425
0.1uF
16V
R408
100
PWM2_2CH_POWER
PANEL_CTL
001:AL22
+5V_USB
R434
10K
R409
2K
R416
10K
R415
100
100
+3.5V_ST
POWER_DET_RESET
USB1_OCD
R463
10K
RESET_IC_SOC_RESET
+3.3V_Normal
L401
CIC21J501NE
L420
BLM18PG121SN1D
R482
8.2K
8.2K
1%
PD_+24V
+5V_Normal
C404
0.1uF
16V
C438
0.1uF
25V
0.1uF
25V
OPT
+2.5V_Normal
C474
0.1uF
0.1uF
R404
100K
PD_+24V
R405
5.6K
5.6K
C419
4.7uF 10V
C488
3300pF
R442
30K
1/16W
1%
R406
4.7K
4.7K
C405
10uF
16V
10uF
16V
+3.5V_ST
C410
3300pF
50V
3300pF
50V
C439
100pF
50V
R401
10K
IC409-*1
APX803D29
PD_+24V_PWR_DET_DIODES
1
GND
3
VCC
2
RESET
R407
5.6K
5.6K
R411
33K
OPT
Q402
MMBT3906(NXP)
1
2
3
C421
22uF
16V
22uF
16V
OPT
R452
33K
1%
C476
0.1uF
16V
PWM1
L406
3.6uH
L415
3.6uH
C403
10uF
10V
CAP_10uF_X5R
85C
C417
10uF
10uF
10V
CAP_10uF_X5R
85C
R402-*1
100
100
+3.5V_SOC_RESET
IC401
TPS65281RGV
TPS65281RGV
3
ROSC
2
COMP
4
RLIM
1
SS
5
EN_SW
6
FAULT
7
AGND
8
SW_OUT
9
SW_IN
10
FB
11
LX
12
BST
13
PGND
14
VIN
15
V7V
16
EN
17
[EP]
IC402
TJ1118S-2.5
1
GND
2
OUT
3
IN
C437
22uF
10V
22uF
10V
C430
10uF
10uF
10V
10uF
C461
10V
C423
2.2uF
10V
2.2uF
10V
C453
22uF
22uF
10V
C456
22uF
22uF
10V
C443
10uF
10uF
16V
C472
22uF
10V
PANEL_POWER
+2.5V_Normal
S7LR core 1.15V volt
3A
CHANGE TO
16V/X5R
16V/X5R
R1
+3.5V_ST --> 3.375V --> 3.46V
CHANGE TO
10UF/10V/X5R
10UF/10V/X5R
+3.3V_Normal
CHANGE TO
10UF/10V/X5R
10UF/10V/X5R
Vout=0.8*(1+R1/R2)=1.5319
+5V_Normal
&
+5V_USB
&
+5V_USB
+1.5V_DDR
R2
Vout=0.827*(1+R1/R2)
R2
Power_DET
R1
R1
+24V --> 3.78V --> 3.92V (3.79V)
Vout=0.8*(1+R1/R2)
R2
FROM LIPS & POWER B/D
+12V --> 3.58V --> 3.82V (3.68V)
1.5A
L13 POWER BLOCK (POWER DETECT 2)
*For 55LN54 Power ON Noise
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.
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.
IR/CONTROL
2012/07/18
6
NC4_S7LRM
C607
0.1uF
16V
OPT
R601
100
100
+3.5V_ST
L600
BLM18PG121SN1D
KEY2
R602
10K
1%
IR
R600
100
100
C604
100pF
50V
+3.5V_ST
C603
1000pF
50V
R603
10K
1%
C602
0.1uF
16V
KEY1
+3.5V_ST
R607
3.3K
3.3K
LED_R/BUZZ
P600
12507WR-08L
1
2
3
4
5
6
7
8
9
R610
1.8K
1.8K
L601
BLM18PG121SN1D
CONTROL_FILTER
L602
BLM18PG121SN1D
CONTROL_FILTER
C608
0.1uF
16V
0.1uF
16V
CONTROL_FILTER
C609
0.1uF
16V
0.1uF
16V
CONTROL_FILTER
R611
0
0
CONTROL_NO_FILTER
R612
0
0
CONTROL_NO_FILTER
IR/LED and Control
U
S
B
D
O
W
N
S
T
R
E
A
M
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.
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.
12/06/20
USB
7
NC4_S7LRM
JK700
3
A
U
0
4
S
-
3
0
5
-
Z
C
-
(
L
G
)
1
2
3
4
5
D700
RCLAMP0502BA
OPT
SIDE_USB1_DM
SIDE_USB1_DP
+5V_USB
C700
22uF
10V
USB (SIDE)
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