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Block Diagram; Components Description - Kenwood CS-434HU Service Manual

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CS-434HU/HC
(X25-9460-10) (A/3)
BU 14V
SYSTEM
ACC
ILL
BUS+
BUS-
GA-NET2
J1,2
ILL CONT
(on B/3)
Lch+
Lch-
Rch+
Rch-
SHIELD
GND
CD: 2.0V
(BALANCE
OUTPUT)
AUDIO+B
AUDIO+B
1/2VCC
Q201,Q202
RESET
BU DET
CD: 1.2V
BU 5V
SRV +B
(X92-4590-03)
AUDIO +B
CD MECHA.
(DXM-6513W)
CD 4.7V
Ref.No
Element/Function
IC1
Systemtem u-com
IC2
Hard reset
IC3
Switching regulator
IC21
OP amplifier
IC22
Analog SW
IC30
BUS I/F
Q2
PON(D) control
Q4
Disk indicator control
Q6
IC22 control
Q101
BU detection
Q102
BU5V AVR
Q103
BU5V AVR
Q104
SERVO +B AVR
Q105
SERVO +B AVR control
2

BLOCK DIAGRAM

IC1
IC22
ANALOG
SW
AUDIO
MUTE
CD DATA
12EJE SW
LOS SW
8EJE SW
IC21
LOE/LIM SW
UNBALANCE
to
CD LO/EJ
BALANCE
CD MOTOR
CD DATA
CD CLK
CD STOP
CD RST
MUTE
LAMP
AMBER
ON
12EJE SW
LOS SW
8EJE SW
LOE/LIM SW
MUTE
LAMP
AMBER
LO/EJ
MOTOR
DATA
CLK
M STOP
M RST

COMPONENTS DESCRIPTION

Operation/Condition
Systemtem control
BU5V voltage detection
Power supply for CD4.7V
Lch&Rch unbalance/
balance conversion
Audio input/output switching
BUS Interface
Digital system 5V power supply
PON (D) outputs by ON
Switch on a LED light by ON
An audio output is not
carried out by ON.
At the time of the detection
by ON
BU5V AVR
BU5V AVR
SERVO +B AVR
Outputs by ON.
IC30
GA-NET
BUS I/F
BU 5V
BU DET
SYS ACC
ILL
PON (A)
PON (D)
SRV ON
CD4.7V ON
X1
12.58MHz
X2
SYSTEM u-COM
RST
LAMP
INDICATOR
BU 5V
WHITE
ON
ON
LAMP
BLUE LED
WHITE
KEY
EJECT
(X25- ) (C/3)
Ref.No
Element/Function
Q106
IC3 control
Q107
AVR for illumi
Q108
Illumi control
Q109
AVR for illumi
Q110
Power supply for amber
Q111
Power supply for white
Q112
Illumi switching control (amber)
Q113
Illumi switching control (white)
Q114
Dimmer control for indicators
Q115
AVR control for illumi
Q141
PON(A) AVR
Q142
PON(A) AVR
Q143
PON(A) AVR control
Q151
System ACC
Q201
audio line mute
Q202
audio line mute
Q203
Q201 aud Q202 control
Q501
Small detection
Q501
ILL
ILL DET
(on B/3)
Q151
SYS ACC
SYS ACC
Q101
BU DET
BU DET
BU 5V
PON (D)
Q2
Q102,103
PON (D)
BU5V
PON 5V
SW
AVR
PON (A)
PON (A)
AUDIO +B
AVR
Q141,142
1/2VCC
AUDIO Vref BUFFER
CD4.7V ON
IC3
CD 4.7V
CD 4.7V
REG
SRV ON
Q104
SRV AVR
SRV +B
Q107,109
ILL +B
ILL AVR
Q115 ILL
ILL CONT
IC2
RESET
LAND
Operation/Condition
Switching-stops by ON.
AVR for illumi
Iuminosity-adjusts by the pulse.
AVR for illumi
Power supply for amber
Power supply for white
Switching by ON
Switching by ON
Dimmer by ON
Output by ON
Analog system 8V PON(A) AVR
Analog system 8V PON(A) AVR
Output by ON
System ACC:ON by ON
Lch mute ON by ON
Rch mute ON by ON
Mute ON by ON
Detection by ON

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