Read JBL AUTHENTICS L8 (serv.man6) Service Manual online
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Title
Number
Revision
Size
A3
Date:
12/13/2013
Sheet of
File:
E:\LH file\..\Authentic_Main_Board_Sheet08_Power_P2.SchDoc
Drawn By:
R684
10k
R685
10k
C672
100NF
N
M
R
68
0
R
68
1
10
0K
R
67
8
10
0K
R
68
3
10
0K
R
68
2
10
0K
GND
GND
N
M
R
67
9
N
M
R
67
7
R
67
6
10
0K
C674
100NF
C673
10NF
R
68
6
48
0k
R
68
7
42
K
GND
GND
GND
2546_Status
2
1
3
6
5
4
U675
RClamp0542T
L673
L672
MPZ2012S331A
C680
100NF
C682
10UF
C681
10UF
R671
22.1K
R672
127K
127K
C683
100NF
C679
1UF
GND
+7V
C684
470pF
470pF
GND
C686
22UF
C685
22UF
C687
100NF
USB_5V
R674
100K
R
67
3
3
0/N
M
GND
C689
100NF
C690
10NF
GND
S_GND
2
1
3
6
5
4
U674
RClamp0542T
RClamp0542T
L67
7
L674
MPZ2012S331A
USB_IPAD_D-
USB_IPAD_D+
USB_5V
R693
75K
75K
GND
R691
75K
C692
22UF
C691
100NF
USB_IPAD_D+
USB_IPAD_D-
USB_IPAD_D-
USB_IPAD_D-
USB_IPAD_D+
+15V
AUX_P
+7V
STY
SMPS_TEMP
SMPS_FAIL
GND
R650
100
L67
6
GND
FLG
1
VOUT
2
VOUT
3
GND
4
EN
5
VIN
6
VIN
7
IP
8
U673
RT9703GS
R690
0
USB_OC
R692
47K
R696
0
R697
0
GND
2546_ERROR
USB_PW_ON
2546_Status
2546_ERROR
USB_OC
R689
0
R688
0
R699
0/NM
L675
MPZ2012S331A
Authentic Main Board
USB port
USB port
11
8
USB_OC
2546_ERROR
2546_STATUS
USB_PW_ON
2546_ERROR
2546_STATUS
USB_PW_ON
C658
10UF
C659
10UF
C661
100NF
C660
1UF
R645
0
+3V3_Codec
3V3_LED
+3V3_DSP
3V3
R646
0
R647
0
GND
3V3_MCU_on
R644
0
1
3
2
Q605
MMBT3904
MMBT3904
C663
100NF
R648
120K
C662
10NF
R649
1M
1
3
2
Q604
AP2305AGN
GND
I
USB_5V
R651
0
Current limiter ranger: 1120-1282mA
EN= H, 2546 working.
EN= H, RT9703 working.
Ilimit= 210K/R693
EN=H, power on device
fsw=650kHz
Vout=0.765x (1+R672/R671)
(1.1+2.4)=3.5A
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1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
J601
12PIN, 2.5MM PITCH
-15V
Fr
om
/T
o S
M
P
S
b
oa
rd
EN
1
VFB
2
VREG5
3
SS
4
GND
5
SW
6
VBST
7
VIN
8
PO
W
ER
_P
A
D
9
PO
W
ER
_P
A
D
10
U671
TPS54428DDA
1
2
L671
MSS1038-382NLB
C678
8200PF
C677
6.8PF
6.8PF
R
65
2
2
33
0K
0K
S_GND
SHELL
5
USB GND
4
USB D+
3
USB D-
2
USB PWR
1
SHELL
6
J671
USB_A
SHELL
5
USB GND
4
USB D+
3
USB D-
2
USB PWR
1
SHELL
6
J672
USB_A
L678
5V_ON
USB_PW_ON
R694
0
5V_ON
+
C694
100UF
+
16V
C695
100UF
100UF
+
16V
C671
100UF
+
16V
C675
47UF
47UF
+
16V
C688
47UF
47UF
R
63
8
8
N
M
3V3_MCU_on
R801
1M
R802
0
R675
2.2
2.2
C696
NM
R804
NM
R805
0
TP671
TP672
TP675
TP676
TP673
TP617
TP618
TP616
TP674
TP684
TP677
TP678
TP679
TP678
TP679
TP680
TP681
TP683
AGND
AUX_P
Close to connector
J601 and CN807
J601 and CN807
R
80
6
6
10
K
K
3V3_MCU
1
1
2
2
CON601
P-250-S
GND
IN
1
DM_OUT
2
DP_OUT
3
ILIM_SEL
4
EN
5
CTL1
6
CTL2
7
CTL3
8
STATUS
9
DP_IN
10
DM_IN
11
OUT
12
FAULT
13
GND
14
ILIM_LO
15
ILIM_HI
16
PO
W
ER
_P
A
D
17
U672
TPS2546
GND
PWR
GND
D-
D+
D+
PWR
GND
D-
D+
D+
GND
R807
0
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