LG 32CM540-CA / 42CM540-CA / 47CM540-CA Service Manual ▷ View online
300
500
200
540
120
A7
800
530
900
A2
A10
C2
C4
C3
C1
400
1
1
2
2
3
3
4
4
5
5
D
D
C
C
B
B
A
A
PWR_ON_OFF
BL_ON/OFF
PWR_ON_OFF
BL_DIMMING
GND
BL_ON/OFF
PWR_ON_OFF
BL_NG
BL_DIMMING
BL_DIMMING
BL_NG
2V5SW
5VSB
VDDC_1V2
2V5SW
5VSW
3V3SB
5VSB
12V
12VIN
3V3SW
3V3SB
5VSW
12V
5VSB
12V
5VSB
12VIN
5VSW
5VIN
5VSW
VDDC_1V2
5VSB
3V3SB
3V3SW
5VSW
12VIN
12
12V
9,11
5VSB
3,6,7
3V3SB
3,4,6,11
5VSW
5,6,10
3V3SW
3,4,7,9,10,11,12
2V5SW
4
VDDC_1V2
4
GND
3,4,5,6,7,8,9,10
BL_NG
4
BL_ON/OFF
4
PWR_ON_OFF
4
BL_DIMMING 4
MODEL
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42CM540-CA
2
17
AECN
*.BRD
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*.DSN
0171-2271-4360
Tuesday, November 22, 2011
MODEL
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CIRCUITY
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42CM540-CA
2
17
AECN
*.BRD
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0171-2271-4360
Tuesday, November 22, 2011
MODEL
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CIRCUITY
PCB REV:
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42CM540-CA
2
17
AECN
*.BRD
0.0
PVT
*.DSN
0171-2271-4360
Tuesday, November 22, 2011
Vout = Vref X (1+R2/R1)
= 1.25V x (1+110/110)
= 2.5V
= 1.25V x (1+110/110)
= 2.5V
PWR_ON_OFF
HIGH = > OPEN 5VSW
LOW = > 5VSW OFF
HIGH = > OPEN 5VSW
LOW = > 5VSW OFF
POWER/GND
POWER CONTROL
BL CONTROL
POWER IN
PWR_ON_OFF
HIGH = > OPEN POWER +12V & +24V ON
LOW = > POWER +12V & +24V OFF
HIGH = > OPEN POWER +12V & +24V ON
LOW = > POWER +12V & +24V OFF
2V5SW
Close to Scaler
5VSW
BL_ON/OFF
HIGH = > ON BANEL POWER
LOW = > OFF BANEL POWER
HIGH = > ON BANEL POWER
LOW = > OFF BANEL POWER
VDDC_1V2
Vout = Vref X (1+R1/R2)
= 0.8V x (1+1K2/2K2)
= 1.28
= 0.8V x (1+1K2/2K2)
= 1.28
3V3SB
Vout = Vref X (1+R2/R1)
= 1.25V x (1+180/110)
= 3.2954
= 1.25V x (1+180/110)
= 3.2954
BL_NG = BL_ERR_STATUS
HIGH = > Abnormal
LOW = > Normal
HIGH = > Abnormal
LOW = > Normal
Reserve
Reserve
MST6100VS heat-sink
MST6100VS heat-sink
Close to Scaler
3V3SW
Vout = Vref X (1+R2/R1)
= 1.25V x (1+180/110)
= 3.2954
= 1.25V x (1+180/110)
= 3.2954
60mm
50mm
C15
2200pF/50V
2200pF/50V
0603C
C15
2200pF/50V
2200pF/50V
0603C
RV30
M
L
VS0603M
04
0603VAR
RV30
M
L
VS0603M
04
0603VAR
R29
1K2_F
1K2_F
0402R
R29
1K2_F
1K2_F
0402R
RV31
M
L
VS0603M
04
0603VAR
RV31
M
L
VS0603M
04
0603VAR
C25
0.1uF/16V
0.1uF/16V
0402C
C25
0.1uF/16V
0.1uF/16V
0402C
H9
SCREW-H2
SCREW-H2
H9
SCREW-H2
SCREW-H2
2
1
R30
4K7
4K7
0402R
R30
4K7
4K7
0402R
C4
1000pF/50V
0402C
C4
1000pF/50V
0402C
R25
20K
20K
0402R
R25
20K
20K
0402R
F1
125V/3A
125V/3A
FUSE_E
F1
125V/3A
125V/3A
FUSE_E
R37
180_F
180_F
0402R
R37
180_F
180_F
0402R
J4
2R00_1X14ML
J4
2R00_1X14ML
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2
3
4
5
6
7
8
9
10
11
12
13
14
F2
125V/3A
125V/3A
FUSE_E
F2
125V/3A
125V/3A
FUSE_E
R11
1K
0402R
R11
1K
0402R
FB6
80ohm/4A
80ohm/4A
0805L
FB6
80ohm/4A
80ohm/4A
0805L
C13
0.1uF/16V
0.1uF/16V
0402C
C13
0.1uF/16V
0.1uF/16V
0402C
RV1
NC_VPORT 0603 100K V05
NC_VPORT 0603 100K V05
0603VAR
RV1
NC_VPORT 0603 100K V05
NC_VPORT 0603 100K V05
0603VAR
R33
110_F
110_F
0402R
R33
110_F
110_F
0402R
R19
1K
0402R
R19
1K
0402R
Q4
MMBT3904LT1G
MMBT3904LT1G
SOT23
Q4
MMBT3904LT1G
MMBT3904LT1G
SOT23
2
1
3
R4
NC_1K
NC_1K
1206R
R4
NC_1K
NC_1K
1206R
FB7
80ohm/4A
80ohm/4A
0805L
FB7
80ohm/4A
80ohm/4A
0805L
H10
SCREW-H2
SCREW-H2
H10
SCREW-H2
SCREW-H2
2
1
S
D
G
Q3
AM4835EP
AM4835EP
SOP8
S
D
G
Q3
AM4835EP
AM4835EP
SOP8
1
2
3
4
2
3
4
5
6
7
8
C3
1000pF/50V
0402C
C3
1000pF/50V
0402C
SOT223
ADJ
IN
OUT
ADJ/FIX
U4
AP1117EL-13
AP1117EL-13
SOT_223
SOT223
ADJ
IN
OUT
ADJ/FIX
U4
AP1117EL-13
AP1117EL-13
SOT_223
2
3
1
4
H1
SCREW-H2
SCREW-H2
H1
SCREW-H2
SCREW-H2
2
1
H6
SCREW-H2
SCREW-H2
H6
SCREW-H2
SCREW-H2
2
1
D1
1N4148WS-7-F
1N4148WS-7-F
SOD_323
D1
1N4148WS-7-F
1N4148WS-7-F
SOD_323
R31
10K
10K
0402R
R31
10K
10K
0402R
FB4
0
1206R
FB4
0
1206R
C20
0.1uF/16V
0.1uF/16V
0402C
C20
0.1uF/16V
0.1uF/16V
0402C
SOT223
ADJ
IN
OUT
ADJ/FIX
U3
AP1117EL-13
AP1117EL-13
SOT_223
SOT223
ADJ
IN
OUT
ADJ/FIX
U3
AP1117EL-13
AP1117EL-13
SOT_223
2
3
1
4
C7
330pF/50V
0402C
C7
330pF/50V
0402C
R24
10
10
0402R
R24
10
10
0402R
H7
SCREW-H2
SCREW-H2
H7
SCREW-H2
SCREW-H2
2
1
H4
SCREW-H2
SCREW-H2
H4
SCREW-H2
SCREW-H2
2
1
RV32
M
L
VS0603M
04
0603VAR
RV32
M
L
VS0603M
04
0603VAR
C12
0.1uF/16V
0.1uF/16V
0402C
C12
0.1uF/16V
0.1uF/16V
0402C
R6
NC_1K
NC_1K
1206R
R6
NC_1K
NC_1K
1206R
SOT223
ADJ
IN
OUT
ADJ/FIX
U2
AP1117EL-13
AP1117EL-13
SOT_223
SOT223
ADJ
IN
OUT
ADJ/FIX
U2
AP1117EL-13
AP1117EL-13
SOT_223
2
3
1
4
C22
0.1uF/16V
0.1uF/16V
0402C
C22
0.1uF/16V
0.1uF/16V
0402C
C16
22uF/16V
22uF/16V
1210C
C16
22uF/16V
22uF/16V
1210C
R12
1K
0402R
R12
1K
0402R
R16
10K
10K
0402R
R16
10K
10K
0402R
R26
10K
10K
0402R
R26
10K
10K
0402R
R34
110
110
0402R
R34
110
110
0402R
R32
2K_F
2K_F
0402R
R32
2K_F
2K_F
0402R
R36
180_F
180_F
0402R
R36
180_F
180_F
0402R
C14
0.1uF/16V
0.1uF/16V
0402C
C14
0.1uF/16V
0.1uF/16V
0402C
C24
0.1uF/16V
0.1uF/16V
0402C
C24
0.1uF/16V
0.1uF/16V
0402C
R5
NC_1K
NC_1K
1206R
R5
NC_1K
NC_1K
1206R
H12
SCREW-H2
SCREW-H2
H12
SCREW-H2
SCREW-H2
2
1
UH1
Small Shield
UH1
Small Shield
Shield
1
Shield
2
Shield
3
Shield
5
Shield
6
Shield
4
Shield
7
Shield
8
R22
1K
1K
1206R
R22
1K
1K
1206R
C17
1.0uF/25V
1.0uF/25V
0805C
C17
1.0uF/25V
1.0uF/25V
0805C
H2
SCREW-H2
SCREW-H2
H2
SCREW-H2
SCREW-H2
2
1
R276
10K
10K
0402R
R276
10K
10K
0402R
L1
4.7uH/5.2A
4.7uH/5.2A
L10_SMT
L1
4.7uH/5.2A
4.7uH/5.2A
L10_SMT
1
2
TG1
ESD Copper
ESD Copper
TG1
ESD Copper
ESD Copper
+
CE4
470uF/16V
470uF/16V
ECD10
+
CE4
470uF/16V
470uF/16V
ECD10
+
CE7
100uF/25V
100uF/25V
ECD6
+
CE7
100uF/25V
100uF/25V
ECD6
FB3
80ohm/4A
80ohm/4A
0805L
FB3
80ohm/4A
80ohm/4A
0805L
R13
1K
0402R
R13
1K
0402R
+
CE2
470uF/16V
470uF/16V
ECD10
+
CE2
470uF/16V
470uF/16V
ECD10
C18
1.0uF/25V
1.0uF/25V
0805C
C18
1.0uF/25V
1.0uF/25V
0805C
R28
NC_4K7
NC_4K7
0402R
R28
NC_4K7
NC_4K7
0402R
R38
110
110
0402R
R38
110
110
0402R
C19
NC_10uF/10V
NC_10uF/10V
1206C
C19
NC_10uF/10V
NC_10uF/10V
1206C
R27
47K
47K
0402R
R27
47K
47K
0402R
C10
1.0uF/25V
1.0uF/25V
0805C
C10
1.0uF/25V
1.0uF/25V
0805C
C21
0.1uF/16V
0.1uF/16V
0402C
C21
0.1uF/16V
0.1uF/16V
0402C
+
CE1
220uF/25V
220uF/25V
ECD8
+
CE1
220uF/25V
220uF/25V
ECD8
+
CE6
100uF/25V
100uF/25V
ECD6
+
CE6
100uF/25V
100uF/25V
ECD6
FB5
80ohm/4A
80ohm/4A
0805L
FB5
80ohm/4A
80ohm/4A
0805L
R15
10K
10K
0402R
R15
10K
10K
0402R
+
CE18
100uF/25V
100uF/25V
ECD6
+
CE18
100uF/25V
100uF/25V
ECD6
FB2
80ohm/4A
80ohm/4A
0805L
FB2
80ohm/4A
80ohm/4A
0805L
C11
10uF/16V
10uF/16V
1206C
C11
10uF/16V
10uF/16V
1206C
U1
AT1529
AT1529
SOP8EP_127
U1
AT1529
AT1529
SOP8EP_127
VCC
1
REF
2
GND
3
FB
4
EN
5
PGND
6
LX
7
VIN
8
E_
PAD
9
FB1
80ohm/4A
80ohm/4A
0805L
FB1
80ohm/4A
80ohm/4A
0805L
R35
110_F
110_F
0402R
R35
110_F
110_F
0402R
R23
1K
1K
1206R
R23
1K
1K
1206R
C23
0.1uF/16V
0.1uF/16V
0402C
C23
0.1uF/16V
0.1uF/16V
0402C
R3
NC_1K
NC_1K
1206R
R3
NC_1K
NC_1K
1206R
+
CE3
470uF/16V
470uF/16V
ECD10
+
CE3
470uF/16V
470uF/16V
ECD10
1
1
2
2
3
3
4
4
5
5
D
D
C
C
B
B
A
A
SAR0
LED_WHITE
LED_RED
GND
IRIN
SAR1
SAR0
SAR1
BLUE
SYS_SCL
SYS_SDA
RED
LED_RED
LED_WHITE
LED_WHITE
LED_RED
SYS_SDA
RED
SYS_SCL
IRIN
BLUE
3V3SB
5VSB
3V3SB
3V3SW
3V3SB
3V3SW
5VSB
3V3SW
5VSB
3V3SW
5VSB
2,6,7
3V3SB
2,4,6,11
3V3SW
2,4,7,9,10
GND
2,4,5,6,7,8
IRIN
4
SAR0
4
SAR1
4
LED_RED
4
LED_WHITE
4
SYS_SCL
4,7
SYS_SDA
4,7
MODEL
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CIRCUITY
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SCH FILE :
DATE:
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<Doc>
42CM540-CA
3
17
AECN
*.BRD
0.0
PVT
*.DSN
0171-2271-4360
Tuesday, November 22, 2
MODEL
Sheet
REV:
of
CIRCUITY
PCB REV:
PCB FILE :
PCB P/ N:
ECN NO:
TECHNOLOGY
APPROVED BY:
DESIGN BY:
SCH FILE :
DATE:
CHECKED BY:
<Doc>
42CM540-CA
3
17
AECN
*.BRD
0.0
PVT
*.DSN
0171-2271-4360
Tuesday, November 22, 2
MODEL
Sheet
REV:
of
CIRCUITY
PCB REV:
PCB FILE :
PCB P/ N:
ECN NO:
TECHNOLOGY
APPROVED BY:
DESIGN BY:
SCH FILE :
DATE:
CHECKED BY:
<Doc>
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AECN
*.BRD
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*.DSN
0171-2271-4360
Tuesday, November 22, 2
POWER/GND
KEYPAD INPUT
IR
IR & LED & SENSOR INPUT
KEYPAD
CH-
1.492V
VOL+
2.520V
ADIN0
(Volt)
(Volt)
VOL-
3.3V
Non
CH+
Non
2.038V
Output
pin
pin
CH+
CH-
VOL+
VOL-
Menu
Input
Power
1.492V
Input
0V
ADIN1
(Volt)
(Volt)
Power
3.3V
Menu
2.038V
Output
pin
pin
LED
SENSOR
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Power
MENU
CH+
CH-
VOL+
VOL-
INPUT
TACT Switch Follow JVC Symbol
TOP VIEW
BLUE
HIGH = > LED_BLUE_ON
LOW = > LED_BLUE_OFF
HIGH = > LED_BLUE_ON
LOW = > LED_BLUE_OFF
RED
HIGH = > LED_RED_OFF
LOW = > LED_RED_ON
HIGH = > LED_RED_OFF
LOW = > LED_RED_ON
2.520V
PM Mode
Power KEY only use SAR0
Power KEY only use SAR0
R60
1K1_F
0402R
R60
1K1_F
0402R
C30
NC_10pF/50V
0402C
C30
NC_10pF/50V
0402C
Q6
MMBT3904LT1G
MMBT3904LT1G
SOT23
Q6
MMBT3904LT1G
MMBT3904LT1G
SOT23
2
1
3
R62
562_F
0402R
R62
562_F
0402R
C35
0.1uF/16V
0.1uF/16V
0402C
C35
0.1uF/16V
0.1uF/16V
0402C
R58
681_F
681_F
0402R
R58
681_F
681_F
0402R
SW1
TACT SW
TACT SW
SW1
TACT SW
TACT SW
4
2
3
1
R43
330
0402R
R43
330
0402R
R47
NC_22
0402R
R47
NC_22
0402R
R44
3K3
0402R
R44
3K3
0402R
J14
1R25_1X8ML
J14
1R25_1X8ML
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
R61
2K2_F
0402R
R61
2K2_F
0402R
R67
2K2_F
0402R
R67
2K2_F
0402R
FB40
80ohm/4A
80ohm/4A
0805L
FB40
80ohm/4A
80ohm/4A
0805L
C34
0.1uF/16V
0.1uF/16V
0402C
C34
0.1uF/16V
0.1uF/16V
0402C
SW3
TACT SW
TACT SW
SW3
TACT SW
TACT SW
4
2
3
1
SW2
TACT SW
TACT SW
SW2
TACT SW
TACT SW
4
2
3
1
SW4
TACT SW
TACT SW
SW4
TACT SW
TACT SW
4
2
3
1
R48
NC_22
0402R
R48
NC_22
0402R
SW5
TACT SW
TACT SW
SW5
TACT SW
TACT SW
4
2
3
1
R46
47K
47K
0402R
R46
47K
47K
0402R
R57
10K
10K
0402R
R57
10K
10K
0402R
R53
3K3
0402R
R53
3K3
0402R
R68
0
0402R
R68
0
0402R
R41
330
0402R
R41
330
0402R
C29
NC_10pF/50V
0402C
C29
NC_10pF/50V
0402C
SW6
TACT SW
SW6
TACT SW
4
2
3
1
C31
1uF/25V
0603C
C31
1uF/25V
0603C
C33
1000pF/50V
0402C
C33
1000pF/50V
0402C
R49
10K
10K
0402R
R49
10K
10K
0402R
R42
NC_10K
NC_10K
0402R
R42
NC_10K
NC_10K
0402R
R63
1K1_F
0402R
R63
1K1_F
0402R
SW7
TACT SW
SW7
TACT SW
4
2
3
1
R66
562_F
0402R
R66
562_F
0402R
R69
0
0402R
R69
0
0402R
R64
0
0402R
R64
0
0402R
FB44
80ohm/4A
80ohm/4A
0805L
FB44
80ohm/4A
80ohm/4A
0805L
C26
1000pF/50V
0402C
C26
1000pF/50V
0402C
R40
NC_10K
NC_10K
0402R
R40
NC_10K
NC_10K
0402R
C32
1uF/25V
0603C
C32
1uF/25V
0603C
R54
330
0402R
R54
330
0402R
Q5
MMBT3904LT1G
MMBT3904LT1G
SOT23
Q5
MMBT3904LT1G
MMBT3904LT1G
SOT23
2
1
3
C28
330pF/50V
0402C
C28
330pF/50V
0402C
R59
681_F
681_F
0402R
R59
681_F
681_F
0402R
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