LG 32LF7300 Service Manual ▷ View online
- 33 -
3. 32LH3300-ZC
4. 42LH3300-ZC
- 34 -
EXPLODED VIEW
300
200
121
500
120
122
400
LV
1
LV
2
801
802
804
803
530
521
821
805
550
910
A2
900
540
510
200T
200N
A10
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
SCH EM ATIC
32LF7300, 42LF7300
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
SMPS_ON
BL_EN_O
ANA_DIM
ANA_DIM
SMPS_ON
SMPS_ON
ANA_DIM
BL_EN_O
I_SCL
I_SDA
I_SDA
I_SCL
I_SDA
I_SDA
PWM_DIM
PWM_DIM
+5VSTB
+12V
+5VSTB
+5VSTB
+20V
+5VSTB
+5V
+5VSTB
+5V
+3V3D
+3V3D
+3V3D
+3V3D
+3V3D
GND_A
+5VSTB
+3V3STB
+5VSTB
+3V3STB
+5V
+3V3STB
STBY_EN
2
IR_IN
2
PWM_BUZZ
2
KEY_ADC1
2
KEY_ADC2
2
A_DIM
4
P_DIM
4
BLT_EN
4
AC_DETECT
2,15,18
ATM_SCL
2
ATM_SDA_IN 2
ATM_SDA_OUT 2
PWM_DIM_IN
10,22
PWM_DIM_OUT 10,22
PANEL_ER
5
DCDC_ON
3,19,31
LED_R
2
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-01
10
PWR&IR/LED INTERFACE
LGE HD T+C
LF7300
1
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-01
10
PWR&IR/LED INTERFACE
LGE HD T+C
LF7300
1
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-01
10
PWR&IR/LED INTERFACE
LGE HD T+C
LF7300
1
43
Wednesday, April 15, 2009
GND_D
DGND
R29
103/1005
R29
103/1005
R20
OPEN-472/1005
OPEN-472/1005
R20
OPEN-472/1005
OPEN-472/1005
R5
OPEN-000/1005
R5
OPEN-000/1005
TP10
PCB_TP10
TP10
PCB_TP10
1
Q3
MMBT4401
MMBT4401
Q3
MMBT4401
MMBT4401
1
2
3
C4
100uF/16V/MVK/S
C4
100uF/16V/MVK/S
C17
105p/16V/1005
C17
105p/16V/1005
TP6
PCB_TP10
TP6
PCB_TP10
1
R1
103/1005
103/1005
R1
103/1005
103/1005
R32
472/1005
472/1005
R32
472/1005
472/1005
R28
472/1005
472/1005
R28
472/1005
472/1005
R185
000/1005
R185
000/1005
R11
101/1005
R11
101/1005
C9
105p/25V/2012
C9
105p/25V/2012
C20
105p/16V/1005
C20
105p/16V/1005
C13
106p/16V/2012
106p/16V/2012
C13
106p/16V/2012
106p/16V/2012
C8
104p/50V
C8
104p/50V
C18
106p/16V/2012
C18
106p/16V/2012
R27
472/1005
472/1005
R27
472/1005
472/1005
R33
472/1005
472/1005
R33
472/1005
472/1005
R19
OPEN-102/1005
OPEN-102/1005
R19
OPEN-102/1005
OPEN-102/1005
C11
106p/16V/2012
C11
106p/16V/2012
TP12
PCB_TP10
TP12
PCB_TP10
1
Q6
MMBT4401
MMBT4401
Q6
MMBT4401
MMBT4401
1
2
3
Q9
MMBT4401
MMBT4401
Q9
MMBT4401
MMBT4401
1
2
3
TP20
PCB_TP10
PCB_TP10
TP20
PCB_TP10
PCB_TP10
1
TP3
PCB_TP10
TP3
PCB_TP10
1
C5
104p/50V
C5
104p/50V
R186
OPEN-102/1005
R186
OPEN-102/1005
RV36
OPEN-SV060314B431N
RV36
OPEN-SV060314B431N
TP5
PCB_TP10
TP5
PCB_TP10
1
TP15
PCB_TP10
TP15
PCB_TP10
1
R14
OPEN-472/1005
OPEN-472/1005
R14
OPEN-472/1005
OPEN-472/1005
L3
BLM41PG600SN1L
BLM41PG600SN1L
L3
BLM41PG600SN1L
BLM41PG600SN1L
C285
470uF/25V/BXE/S
C285
470uF/25V/BXE/S
U2
LD1117AL-3.3
LD1117AL-3.3
U2
LD1117AL-3.3
LD1117AL-3.3
VIN
3
ADJ
1
VO
2
TAP
4
TP2
PCB_TP10
PCB_TP10
TP2
PCB_TP10
PCB_TP10
1
TP89
PCB_TP10
TP89
PCB_TP10
1
Q1
MMBT4401
MMBT4401
Q1
MMBT4401
MMBT4401
1
2
3
TP1
PCB_TP10
PCB_TP10
TP1
PCB_TP10
PCB_TP10
1
R15
OPEN-202/1005
OPEN-202/1005
R15
OPEN-202/1005
OPEN-202/1005
Q2
MMBT4401
MMBT4401
Q2
MMBT4401
MMBT4401
1
2
3
TP88
PCB_TP10
TP88
PCB_TP10
1
R7
103/1005
103/1005
R7
103/1005
103/1005
R3
103/1005
103/1005
R3
103/1005
103/1005
C3
106p/16V/2012
C3
106p/16V/2012
C238
106p/16V/2012
C238
106p/16V/2012
C7
470uF/16V/BXJ/S
C7
470uF/16V/BXJ/S
TP4
PCB_TP10
TP4
PCB_TP10
1
L4
BLM41PG600SN1L
BLM41PG600SN1L
L4
BLM41PG600SN1L
BLM41PG600SN1L
C6
100uF/25V/BXE/S
C6
100uF/25V/BXE/S
R6
000/1005
R6
000/1005
TP9
PCB_TP10
TP9
PCB_TP10
1
R12
103/1005
R12
103/1005
U1
FDS6675BZ
FDS6675BZ
U1
FDS6675BZ
FDS6675BZ
S1
1
S2
2
S3
3
G
4
D1
5
D2
6
D3
7
D4
8
R17
102/1005
R17
102/1005
L2
BLM41PG600SN1L
BLM41PG600SN1L
L2
BLM41PG600SN1L
BLM41PG600SN1L
C26
104p/16V/1005
C26
104p/16V/1005
RV37
OPEN-SV060314B431N
OPEN-SV060314B431N
RV37
OPEN-SV060314B431N
OPEN-SV060314B431N
1.
25mm
JP2
12505WR-15A
1.
25mm
JP2
12505WR-15A
11
10
9
8
7
6
5
4
3
2
1
12
13
14
15
13
14
15
16
17
C12
106p/16V/2012
C12
106p/16V/2012
R10
472/1005
472/1005
R10
472/1005
472/1005
R177
102/1005
R177
102/1005
Q5
OPEN-MMBT4401
OPEN-MMBT4401
Q5
OPEN-MMBT4401
OPEN-MMBT4401
1
2
3
Q8
FDV301N_NL
FDV301N_NL
Q8
FDV301N_NL
FDV301N_NL
1
3
2
R8
103/1005
R8
103/1005
Q7
FDV301N_NL
FDV301N_NL
Q7
FDV301N_NL
FDV301N_NL
1
3
2
Q4
OPEN-MMBT4401
Q4
OPEN-MMBT4401
1
2
3
R31
472/1005
472/1005
R31
472/1005
472/1005
C2
104p/50V
C2
104p/50V
R24
OPEN-103/1005
R24
OPEN-103/1005
TP19
PCB_TP10
PCB_TP10
TP19
PCB_TP10
PCB_TP10
1
TP16
PCB_TP10
TP16
PCB_TP10
1
R4
103/1005
103/1005
R4
103/1005
103/1005
TP7
PCB_TP10
TP7
PCB_TP10
1
R34
103/1005
103/1005
R34
103/1005
103/1005
R18
OPEN-103/1005
R18
OPEN-103/1005
R13
103/1005
R13
103/1005
R30
472/1005
472/1005
R30
472/1005
472/1005
L1
BLM41PG600SN1L
BLM41PG600SN1L
L1
BLM41PG600SN1L
BLM41PG600SN1L
R21
OPEN-202/1005
OPEN-202/1005
R21
OPEN-202/1005
OPEN-202/1005
TP8
PCB_TP10
TP8
PCB_TP10
1
R2
103/1005
R2
103/1005
C10
OPEN-104p/16V/1005
C10
OPEN-104p/16V/1005
R9
101/1005
R9
101/1005
R369
OPEN-000/1005
R369
OPEN-000/1005
R16
102/1005
R16
102/1005
2mm
JP1
SMW200-24C
SMW200-24C
2mm
JP1
SMW200-24C
SMW200-24C
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
11
12
13
14
15
16
17
18
19
20
21
22
23
24
TP13
PCB_TP10
TP13
PCB_TP10
1
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
KEY_ADC2
KEY_ADC1
MISO
SCK
SCK
MOSI
KEY_ADC1
KEY_ADC2
RESETn
MOSI
RESETn
SCK
MISO
RESETn
M_RST_N
INT_OUT
M_RST_N
INT_OUT
MOD1_ID
MOD2_ID
KEY_ADC1
M_SCL
M_SDA
M_SDA
MOD2_ID
MOD1_ID
MOD3_ID
MOD3_ID
+5VSTB
+5VSTB
+3V3_A
+5VSTB
+5VSTB
+5VSTB
+5VSTB
+5VSTB
+5VSTB
+5VSTB
+3V3_A
+5VSTB
FLI_SDA0
4,12,18,20
KEY_ADC2
1
IR_IN
1
STBY_EN
1
KEY_ADC1
1
A_RESET
18
TA
13
RA
13
FLI_SCL0
4,12,18,20
LPM_RST_N
4
FLI_INT
4
PWM_BUZZ
1
ATM_SCL
1
ATM_SDA_IN
1
ATM_SDA_OUT
1
SC_MUTE
15
AC_DETECT
1,15,18
M_SCL
13
M_SDA
13
LED_R
1
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-02
10
MICOM[ATMEGA324P]
LGE HD T+C
LF7300
2
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-02
10
MICOM[ATMEGA324P]
LGE HD T+C
LF7300
2
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-02
10
MICOM[ATMEGA324P]
LGE HD T+C
LF7300
2
43
Wednesday, April 15, 2009
PA5
UART0(to RS232)
PA4
PA3
UART0(to RS232)
PB7
PA2
PB1
PB0
PA7
PA6
PA0
PA1
KEY_ADC2
PB2
PB3
PB4
PB5
PB6
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
KEY_ADC1
FLI_SCL1
FLI_SDA1
A_RESET
AC_DETECT
Front Key ADC2
Front Key ADC1
STBY_EN
MOSI
MISO
SCK
RA
TA
IR_IN
IR Input
AMP Reset Control(to AMP)
SMPS AC Detect
I2C(to Douglas)
I2C(to Douglas)
Stand-by ON/OFF
JTAG
JTAG
JTAG
System Reset
M_RST_N
Douglas Chip Reset
All location are from 41 to 70
INT_OUT
Douglas Interrupt
PWM_BUZZ
SC_MUTE
SCART Audio OUT MUTE
Buzzer Control
ATM_SCL
ATM_SDA_IN
ATM_SDA_ OUT
LGE SUB B/D Control I2C
LGE SUB B/D Control I2C
LGE SUB B/D Control I2C
MOD2_DET
MOD1_DET
Model Detect
Model Detect
KEY_ADC1
OFF POWER KEY Detect
MOD3_DET
Model Detect
MOD1_ID
MOD2_ID
MOD3_ID
LH3300
LF7300
L
L
H
L
H
L
LF7700
L
L
L
R40
000/1005
R40
000/1005
R41
330/1005
R41
330/1005
C34
104p/16V/1005
C34
104p/16V/1005
R594
000/1005
R594
000/1005
C27
OPEN-104p/16V/1005
C27
OPEN-104p/16V/1005
C36
200p/50V/1005
C36
200p/50V/1005
R43
472/1005
472/1005
R43
472/1005
472/1005
R44
103/1005
R44
103/1005
R46
103/1005
R46
103/1005
Q10
FDV301N_NL
FDV301N_NL
Q10
FDV301N_NL
FDV301N_NL
1
3
2
C31
104p/16V/1005
C31
104p/16V/1005
R47
183/F/1005
183/F/1005
R47
183/F/1005
183/F/1005
R35
103/1005
103/1005
R35
103/1005
103/1005
Y1
16MHZ/20pF/SMD
Y1
16MHZ/20pF/SMD
1
2
R39
330/1005
R39
330/1005
R404
OPEN-000/1005
R404
OPEN-000/1005
R403
OPEN-103/1005
R403
OPEN-103/1005
R48
103/1005
103/1005
R48
103/1005
103/1005
C33
104p/16V/1005
C33
104p/16V/1005
R38
162/F/1005
R38
162/F/1005
C30
104p/16V/1005
C30
104p/16V/1005
JP3
OPEN-HPH-DS06-02
JP3
OPEN-HPH-DS06-02
1
2
3
4
5
6
R405
103/1005
R405
103/1005
R37
162/F/1005
R37
162/F/1005
C32
104p/16V/1005
C32
104p/16V/1005
R50
103/1005
103/1005
R50
103/1005
103/1005
R402
OPEN-103/1005
R402
OPEN-103/1005
R49
103/1005
103/1005
R49
103/1005
103/1005
C28
104p/16V/1005
C28
104p/16V/1005
C35
OPEN-103p/50V/1005
C35
OPEN-103p/50V/1005
C37
200p/50V/1005
C37
200p/50V/1005
Q11
FDV301N_NL
FDV301N_NL
Q11
FDV301N_NL
FDV301N_NL
1
3
2
R42
472/1005
472/1005
R42
472/1005
472/1005
R36
102/1005
102/1005
R36
102/1005
102/1005
Q12
MMBT4401
MMBT4401
Q12
MMBT4401
MMBT4401
1
2
3
R638
000/1005
R638
000/1005
U4
OPEN-KIA7042AF
OPEN-KIA7042AF
U4
OPEN-KIA7042AF
OPEN-KIA7042AF
VCC
1
GND
2
OUT
3
GND
4
R45
101/1005
R45
101/1005
U5
ATMEGA324P-20AU
U5
ATMEGA324P-20AU
(ADC0) PA0
37
(ADC1) PA1
36
(ADC2) PA2
35
(ADC3) PA3
34
(ADC4) PA4
33
(ADC5) PA5
32
(ADC6) PA6
31
(ADC7) PA7
30
(SCL) PC0
19
(SDA) PC1
20
(TCK) PC2
21
(TMS) PC3
22
(TDO) PC4
23
(TDI) PC5
24
(TOSC1) PC6
25
(TOSC2) PC7
26
PB0 (XCK/T0)
40
PB1 (T1)
41
PB2 (AIN0/INT2)
42
PB3 (AIN1/OC0)
43
PB4 (SS)
44
PB5 (MOSI)
1
PB6 (MISO)
2
PB7 (SCK)
3
PD0 (RXD)
9
PD1 (TXD)
10
PD2 (INT0)
11
PD3 (INT1)
12
PD4 (OC1B)
13
PD5 (OC1A)
14
PD6 (ICP)
15
PD7 (OC2)
16
XTAL2
7
XTAL1
8
AREF
29
AVCC
27
RESETn
4
VCC1
5
VCC2
17
VCC3
38
GND1
6
GND2
18
GND3
28
GND4
39
S1
OPEN-JTP1127WEM
S1
OPEN-JTP1127WEM
1
2
3
4
C29
106p/16V/2012
C29
106p/16V/2012
Click on the first or last page to see other 32LF7300 service manuals if exist.