Sch17 Subwoofer Amp2 - Polk Mono Signa S4 Service Manual

SCH17 SubWoofer AMP2

P3V3
FB1 500Ω/800mA
1 2
AMP_3V3
C10 C722 C11
R719 NC/0
POWER_23V
FB606
1 8
S1 D1
2 7
S3 D2
3 6
S2 D3
4 5
G1 D4
C714
U3
R60
1uF/50V/X5R AP4435GM
330K/1%
R1027
330K/1%
PWR_SW2
R1028 4.7K Q607
3 PWR_SW2
3DG3904M
AMP23V Switch
R720 NC/0
STB_3V3
Q1
LT1527SI
S D
R62
C715
100K
0.1uF/16V/X7R
PWR_SW1
R61 4.7K Q608
3 PWR_SW1
3DG3904M
R1031
47K
3V3 Switch
POWER_23V
For Wireless
AMP_I2C_SDA
3 AMP_I2C_SDA
AMP_I2C_SCL
3 AMP_I2C_SCL R34
470K
Q5
3CG3906M
R35
100K
R36 STB_3V3
330K/1%
R37
PWR_SW1
Q6
4.7K
AMP_I2C_SCL
I2C Isolation and switch for turning
C6 4700pF/50V/X7R
AMP_23V
NC/300Ω/3A
1 2
R7 470 C9
0.047uF/50V/X7R
AMP_3V3
C18
0.1uF/10V/X5R
R10
R11 0 10K
AMP_FAULT
S-GND1
C19 NC/10pF/50V/NP0
AMP_I2S_MCLK
R16 18.2K/1%
C27
C28
AMP_PDN_AND
0.1uF/16V/X7R 4.7UF/10V/X5R
AMP_I2S_LRCK
AMP_I2S_BCLK
AMP_I2S_DATA
AMP_I2C_SDA1
R21 10Ω
AMP_I2C_SCL1
R22 10Ω
P3V3
AMP_RESET
AMP_I2S_MCLK
3 AMP_I2S_MCLK
AMP_I2S_LRCK
3 AMP_I2S_LRCK
AMP_I2S_BCLK
3 AMP_I2S_BCLK
AMP_I2S_DATA
3 AMP_I2S_DATA
AMP_RESET
3 AMP_RESET
AMP_FAULT
3 AMP_FAULT
设定的掉电电压根据实 际 需 要 调 整 ，
For AMP
掉 电 检 测 电 压
V=0.6*(R5+R1)/R1
XP1 XP2
4PIN/1.25mm 4PIN/1.25mm
6 6
Vdrop=11.2V
GND GND
5 5
GND GND
POWER_23V
I2C_ISOn REU3
AMP_3V3
75K
R38 R39
Q7
100K 100K
2N7002K REU6 CEU2
AMP_I2C_SDA AMP_I2C_SDA1
NC
D S
Q8
R42 NC/0/1% AMP_I2C_SCL1 4.7K
2N7002K
D S
R43 NC/0/1%
S-GND1
C5 4700pF/50V/X7R
C7 4700pF/50V/X7R
R6 470 C8
0.047uF/50V/X7R
AMP_23V
C14
C12
+
2200pF/50V/X7R
U2
49
GND
13 48
AVDD PGND_AB
14 47
ADR/FAULT PGND_AB
15 46
MCLK OUT_B
C22
16 45
OSC_RES NC
17 44
DVSSO NC 4700pF/50V/X7R
BST_AB
18 43
VR_DIG BST_B
TAS5731M BST_CD
19 42
PDN BST_C
C29
20 41
LRCLK NC
21 40 4700pF/50V/X7R
SCLK NC
22 39
SDIN OUT_C
23 38
SDA PGND_CD
24 37
SCL PGND_CD
AMP_3V3
R23
NC/4.7K
AMP_23V
C42
+
AMP_3V3
4700pF/50V/X7R
C46
0.1uF/16V/X7R
STB_3V3
3 AMP_PDN
STB_3V3
REU1
STB_3V3
NC
REU8
REU2 R54 0R
AMP_PDN_AND
47K
10K QEU1
CEU1
REU4 R1026 1K
100K
QEU2
REU5
100K
25
SUB+
L2 10μH SUB+
R13
R14
C21
10
20
C24 C23
C25 C26 4700pF/50V/X7R
330pF/50V/NP0
C30
C34 4700pF/50V/X7R
R20
SUB-
10
L3 10μH SUB-
R25
20
C47
330pF/50V/NP0
AMP_PDN_AND
4Ω 50W
2
2
1
1
2pin/3.96mm
XS1