LG DP170 Service Manual page 42

4. AUDIO CIRCUIT DIAGRAM_1
12
11
4R2
12k
AL
4TP2
4R4
NC-0
4R6
4R5 5.1k
4TP5 DAC_ML 4CE1 10uF/25V
10
8.2k
4R8 4R9
OPEN(180K) 100K 4C2
2000pF
VER
+
4CE3
4R14
47uF/10V
9 8K2
AR 4R19
12k
4R18 4TP13
NC-0
8
8.2k 4R23
4R22 5.1k
4TP17 DAC_MR 4CE6 10uF/25V
4R26 4R27 4TP19
OPEN(180K) 100K 4C8
2000pF
7
10uF/25V
4TP22 MR_OUT 4CE8 4L3
6
4TP24 ML_OUT 4CE10 4L4 FB
10uF/25V
5
4TP28 AUDIO_5V
1
4D2 4R34
4
NC(100K)
4CE12
NC(D4148)
NC(47U/10V)
4TP37
447_5V
3
4TP39 MCU_MUTE
2
1
A B C D
4TP1
4R3
4R1 4TP3
10k
0
L_SPEAKER
A-5V
4C1
4TP4
4C18
220pF
OPEN(104)
4CE2 4R7
4U1A 4TP7
10uF/25V 100
2
ML_OUT
1
3
NJM4558 4R11 4.7K 4Q1
SOP8
MUTE 4C3
1
10K 4TP10
3904 22p
4FB1 OPEN(50)
4R13
4558_VCC A+5V
4FB2 50 AVCC
4C4
+
0.1uF
4CE4
100uF/16V
4TP12
4R20
4TP14
10k
R_SPEAKER
A-5V
AV_IN/OUT_DET
4C6
220pF 4CE7 4R25
4TP18
4U1B 10uF/25V 100
6
MR_OUT
7
VER 4C7
5
NJM4558
4C9 4R29 4.7K 4Q5 22p
0.1uF MUTE
1
4TP20
4558_VCC 3904
FB
4C11
56pF
MR_IN/OUT 4TP25
ML_IN/OUT POWER_DVD
4C12
56pF
NC(D4148)
4D1 4TP29
2
+
4R33 NC(7.5K)
4CE11
NC(220uF/10V)
4TP32
4Q8
1
4D3 NC(D4148)
NC(3906)
4R36 NC(470R)
MUTE
1 2
4R38
NC(100K)
4TP38
4R39
4R40
4.7k
100k
4Q9
1
3906
4R41 10K 4D4 1N4148
4TP40
1 2
E F G H
SPDIF Interface
4TP6
ML_IN/OUT
MR_IN/OUT
4TP8
4TP9 ASPDIF 4R10 0
4R12
OPEN(100K)
4R42 0
4R15 4.7K
4Q2
3906
SPDIF_VCC SPDIF_VCC SPDIF_VCC SPDIF_VCC SPDIF_VCC SPDIF_VCC
4R16 10K
4R17 4C5
4Q3 4.7K
4CE5
0.1u
3906
47UF/10V
4TP15
4R21 4.7K 4TP16
1
4Q4
3904
4R24
47K 4R28
20K
4L1
DVD_5V
4U2 78L05
4Q6
4L2 10uH
3906
BAT_OUT AVCC
3 1
VIN VOUT
4R30
10K
4TP23
4R31
5.1K
1 4Q7
3904
4R32 2K
4C13 4C14
4C15
4RN1 33x4
ASDAT0
SDAT0
1 8
ACLK
2 7 SACLK
ABCK SBCLK
3 6
ALRCK SLRCK
4 5
4U3 4TP33
SDAT0 DAC_MR
1 10
SDATA AOUTR 4R35 10
SBCLK
2 9
SCLK VA
SLRCK GND
3 8
LRCK GND
SACLK DAC_ML
4 7
MCLK AOUTL
5 6
VQ FILT
4TP35
+ CS4344 +
4CE13
4C17 4CE14
0.1uF
4.7uF/16V
10uF/25V
I J K L
3-36 3-37
OPTICAL
4J1
1
2
5
4
3
8
LED
6
Drive IC
7
GP1FD310TP
BAT_OUT
BAT_OUT 1,7,9
DVD_5V
DVD_5V 1,2
AUDIO_5V
AUDIO_5V 1,5,8
A+5V
A+5V 1
A-5V
A-5V 1
POWER_DVD
POWER_DVD 1,6
ASPDIF
ASPDIF 2
AR
AR 2
AL
AL 2
OPEN(10uH) ALRCK
ALRCK 2
4TP21
ABCK
ABCK 2
ACLK
ACLK 2
4344_5V
ASDAT0
ASDAT0 2
+4CE9
4C10
MCU_MUTE
MCU_MUTE 2
0.1uF 100uF/10V
L_SPEAKER
L_SPEAKER 5
R_SPEAKER
R_SPEAKER 5
A_MUTE
A_MUTE 5
AV_IN/OUT_DET
AV_IN/OUT_DET 8
4C16
GND
4TP26
GND 1,2,3,5,6,7,8,9,10
4TP27
4TP30
4TP31
MUTE
MUTE 5
4344_5V 4TP34
AUDIO
M N O P Q R S T