JBL Ms 8 Service Manual

r OUBL esh OOT i NG
sOUN d
The MS-8’s Logic 7 processing 
is (by design) sending all mono 
information to the center 
speaker.
The center speaker seems 
too loud when you’re listening 
to news, sports or talk radio 
stations.
The sound always has too 
much or too little bass or 
treble.
Music is dull, lifeless and 
confined-sounding, with poor 
stereo imaging. The MS-8’s Logic 7 and digital 
signal processing (DSP) are 
defeated.
The MS-8’s System Volume 
was set at too high a level 
during the...

errO r  M ess AG es  ON  dis PLAY
There is insufficient cooling air 
around the main unit.
“MS-8 Has Overheated…” 
“No DSP Response…”
“Voltage Too High…” or 
“Voltage Too Low…” The vehicle’s electrical system 
may be malfunctioning. If the message displays only 
once and the MS-8 resets 
without incident, no further 
involvement is necessary.
If the message displays 
often, contact your vehicle’s 
dealer or mechanic.
There has been a possible 
electrostatic discharge within 
the main unit.
If the...

Item Part Number  Description Qty 
     
1 W-DB-800010015  Lens  1 
2 W-SG-0002-0111  Top cover  1 
3  W-MK-0009-0101  Input Board Plate 1 
4  W-SR-MS80-0425  SUB Heatsink A 1 
5  W-ZA-B00120100  IC Bracket A 2 
6 W-MK-0010-0101  Output Board  1 
7 W-LS1AM0300607 Screw PM3*6  8 
8 W-XG-0005-0101  Bottom  1 
9 W-LS1BM0040081 Screw BM4*8  3 
10 W-LS1AY0401201  Screw PM4*12  4 
11  W-JD-B40600515  Thermally conductive Pad  3 
12 W-ZA-H00010101  Bracket  2 
13 W-LS1KM0040071  Screw KM4*7  8 
14...

1 2 3 4 5
6 ABC D
6 54321
D C
B
A I2S_OUT[3:0]
I2S_IN[3:0] USB DSP
Sheets 2, 3
SDRAM, 
Flash Memory Sheet 5
REGULATORS
Sheet 7 MICROCONTROLLER
Sheet 6
ADC Sheet 8
Sheet 9 DACSheet 10
MIC IN AUDIO IN
Sheets 12,13 AUDIO OUT Sheets 15,16I/O CONNECTORS
Sheet 17
AUDIO POWER AMP 2 Sheet 18
DSP DEBUG
Sheet 4 LOUT[3:0]
ROUT[3:0]JTAGRS232
I2C 2
 
MicL_analog,MicR_analog
LIN[4:2] RIN[4:2]
ED[31:0]
EA[21:2]
AUDIO POWER AMP 1
Sheet 18 I2C 1 
To  Display &RF Receiver
 
ToLaptop
From Aux Src LIN1
RIN1 iAUDL, 
iAUDR...

1 2 3 4 5
6 ABC D
6 54321
D C
B
A C8051F367MICROCONTROLLER
MAINBOARDI2C POWER 5V
DW GNO:
PART NO:
PART NAME:
PRODUCT MODE: SCALE:       1:1
UNIT:          MM
SIZE:          
REV:          
DRAWN BY: 
CHECKED BY:
APPROVED BY: DATA:
DATA:
DATA:DESCRIPTON
DATA
APPROVED DESCRIPTONREV
REV Place
Place
DATA Block Diagram 
MS-8 AUTO DSP DISPLAY  T4ChengHao
2010.04.03
Sheet 2 of 3
B
LCD
TRANSCEIVER nRF24L01 M25P80
3.3V
SPI
RF
FLASHFLASH nRF24L01 MICROCONTROLLERLCD LED
LED 
 MS-8                      
 
 
 
24  

1 2 3 4 5
6 ABC D
6 54321
D C
B
A MC9S08QG8CDTEMICROCONTROLLER
SPI
DW GNO:
PART NO:
PART NAME:
PRODUCT MODE: SCALE:       1:1
UNIT:          MM
SIZE:          
REV:          
DRAWN BY: 
CHECKED BY:
APPROVED BY: DATA:
DATA:
DATA:DESCRIPTON
DATA
APPROVED DESCRIPTONREV
REV Place
Place
DATA Block Diagram 
MS-8 AUTO DSP RF  CONTROLLER T4ChengHao
2010.04.03
Sheet 3 of 3
B
TRANSCEIVER
nRF24L01 BATTERY
RF
POWER  
3VDC/CR2032 PCBLOOP ANTENNA UP
DOWN
LEFT
RIGHT
SELECT
MENU
MUTE
VOLUMET+
VOLUMET- 
 MS-8...

MS-8 Electrical Parts List
Part Number Description Qty Reference Designator or Application
Resistors
W-0701-1100-03 Resistor SMD 10Ω 1/10W ±1% 0603 1 R264
W-0701-1330-03 Resistor SMD 33 Ω 1/10W ±1% 0603 7 R279,R294,R295,R296,R299,R320,R321
W-0701-4330-02 resistor array SMD 33 Ω*4 1/10W ±5% 0603 10 RN1,RN2,RN3,RN4,RN5,RN6,RN7,RN8,RN9,RN10
W-0701-1101-03 Resistor SMD 100 Ω 1/10W ±1% 0603 22 R3,R4,R41,R51,R190,R191,R192,R193,R194,R195,       
R196,R197,R285,R286,R396,R397,R398,R399,R400,R401,...

Part Number Description Qty Reference Designator or Application
W-06S251064045 E-cap SMD 10uF/25V 4*5.4 ±20% 105℃33C33,C85,C111,C114,C116,C125,C146,C148,C167,C168,     
C169,C171,C182,C187,C192,C194,C195,C196,C197,C198,     
C222,C227,C228,C229,C306,C307,C308,C309,C310,C311,    
312,C313,C325
W-06S251065055 E-cap SMD 10uF/35V 5*5.4 ±20% 105 ℃7 C374,C375,C376,C377,C378,C380,C392
W-06S252263045 E-cap SMD 22uF/16V 4*5.4 ±20% 105 ℃8 C241,C242,C243,C244,C245,C246,C247,C248
W-06S254761045 E-cap SMD 47uF/6.3V...

Part Number Description Qty Reference Designator or Application
W-01TI-CU04-09 ICSMD 74HCU04 TSSOP-14 package 
Hex Inverter TI2 
U10, U16
W-0100-0741-09 IC SMD TL074ID SOIC-14 package 
Quad Op-Amp TI5 U28, U31, U35, U38, U39
W-01TI-3106-00 IC SMD TPS3106K 33DBVR SOT-23 
UltraLow Supply-Current/Supply-
Voltage Supervisory TI1 U26
W-0100-3262-00 IC SMD MT48LC2M32B2-7-1T2 86-
PIN TSOP Synchronous DRAM1U7
W-01SL-8051-AA IC SMD C8051F347-GQ LQFP32 Full 
Speed USB Flash SILICON LABS1 U23
W-0100-M224-00 IC SMD...

Part Number Description Qty Reference Designator or Application
W-ZA-H00010101 Bracket248.6*38mm  ADC-12 black texture 
paint2
W-DB-800010015 Lens 232*48*4MM PC transparency with 
silkscreen and paint1
W-SG-0002-0111 Top cover 294*162.4*52.5MM ADC-12 dia-
casting, silver paint and logo with 
diamond cut1
W-XG-0005-0101 Bottom 290.4*158.8*46.5MM ADC-12, dia-
casting, black texture paint1
W-MK-0009-0101 Input Board 229.6*32.3mm SECC, 1.6t, black 
texture paint with silkscreen1
W-MK-0010-0101 Output Board...