HR-MB3
4 – 1
Audio
HR-MB3
Service Manual
HR-MB3
Market
E
CHAPTER 4.
DIAGRAMS
[1] Block diagram
J400
DC
SOCKET
6V
OUTPUT
SC200
USB
SOCKET
5V
OUTPUT
P401
Li-ion
Battery
3.7V
OUTPUT
S401
BATTERY
SW
START
UP
CIRCUIT
D401,
Q403
Li-ion
CHARGE
&
POWER
MANAG
4
20
15~17
5,
6
Q1
IC400
BQ24032
IC403
TPS62220
IC401
TPS62200
IC404
TPS62220
BACK
LIGHT
KEY
INPUT
IC302
1112B31M
3.1V
REGULATOR
IC405
MM3097
IC402
TPS72201
Q3
Q2
DC/DC
DOWN
3.3V
(400mA
Class)
DC/DC
DOWN
1.6V
(300mA
Class)
DC/DC
DOWN
3.3V
(400mA
Class)
DC/DC
UP
7.5V
20mA
LCO
M
ODULE
3.3V
1.6V
REGULATOR
3.3V
3.3V
1.6V
29~39
42,44,45,47,48
50,51,53
3
3
3
4
1
16~28,
30
IC100
TMS320DA255
DSP
HDD
UNIT
3.3V
IC201
CY68013A
USB2.0(Slave)
IC202
BR24L64F
EEPROM
1.6V
(CORE)
1.6V
(RTC)
3.3V
J300
HEADPHONES
IC302
3.1V
9,10
5,6
23,24,25
3.3V
19,25,26,29,31,33
37~48
2,4,5,7,8
10,11,13,
15~26
8,9
5,6
15,16
AUDIO
D
AC
IC301
TLV320DAC23
IC503
AT24C512
EEPROM
3~7
IC500
256
M
B
SDRAM
3.3V
1,2,8,9,18~25,29~31,
33~38,40,42,44~52
3,5~8,10,12~17
SIGNAL
&
DATA&
CONTROL
LINE
POWER
SUPPLY
L
INE
Figure 4-1 BLOCK DIAGRAM (1/1)
Summary of Contents for HR-MB3
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