Kenwood CS-434HC, Service Manual

Page: 2 / 10

2
BU 14V
SYSTEM
ILL
BUS+
BUS-
ILL CONT
Lch+
Lch-
Rch+
Rch-
SHIELD
GND
IC22
ANALOG
UNBALANCE
IC21
to
BALANCE
J1,2
GA-NET2
(on B/3)
MUTE
Q201,Q202
GA-NET
IC30
BUS I/F
12.58MHz
ILL DET
Q501
SYS ACC
Q151
Q101
BU DET
Q102,103
BU5V
Q141,142
PON (A)
Q104
SRV AVR
PON (D)
Q2
BU 5V
PON 5V
1/2VCC
AUDIO +B
AUDIO Vref BUFFER
SRV +B
ILL AVR
Q107,109
ILL +B
RESET
IC2
LAND
(on B/3)
ON
ON ON
BLUE LED
KEY
AVR
SW AVR
IC1
SYSTEM u-COM
IC3
CD 4.7V
CD 4.7V
REG
ACC
SW
Rch-
AUDIO+B
Rch+
AUDIO+B
Rch- Lch- Lch+
1/2VCC
Rch Lch
Rch
Lch
RESET
BU DET
Lch+ Lch- Rch+
SYS ON
AUDIO BU DET
B
US DO
B
US DI
MUTE
CD CLK
CD STOP
CD DATA
CD MOTOR
CD LO/EJ
CD RST
EJECT ILL A ILL W LED-ON
SYS ACC
ILL
SRV ON
PON (D)
PON (A)
CD4.7V ON
X1
X2
RST
12EJE SW
LOS SW
LOE/LIM SW
8EJE SW
MUTE
12EJE SW
LOS SW
LOE/LIM SW
8EJE SW
CD DATA
MOTOR
M STOP
DATA
CLK
LO/EJ
M RST
B
US+
BU
S
-
DIN DOUT STBY
PON (A)
SRV ON
Q115 ILL
ILL CONT
CD4.7V ON
PON (D)
B
U
5V
B
U
5V
BU 5V
BU 5V
ILL +B ILL +B
EJECT
BU DET
SYS ACC
ILL
BU 5V
CD 4.7V
SRV +B
AUDIO +B
(X92-4590-03)
CD MECHA.
(DXM-6513W)
(X25-9460-10) (A/3)
(X25- ) (C/3)
(BALANCE
CD: 2.0V
OUTPUT)
CD: 1.2V
INDICATOR LAMP
WHITE
LAMP
WHITE
LAMP
AMBER
LAMP
AMBER
Ref.No Element/Function Operation/Condition
IC1 Systemtem u-com Systemtem control
IC2 Hard reset BU5V voltage detection
IC3 Switching regulator Power supply for CD4.7V
IC21 OP amplifier
Lch&Rch unbalance/
balance conversion
IC22 Analog SW Audio input/output switching
IC30 BUS I/F BUS Interface
Q2 PON(D) control
Digital system 5V power supply
PON (D) outputs by ON
Q4 Disk indicator control Switch on a LED light by ON
Q6 IC22 control
An audio output is not
carried out by ON.
Q101 BU detection
At the time of the detection
by ON
Q102 BU5V AVR BU5V AVR
Q103 BU5V AVR BU5V AVR
Q104 SERVO +B AVR SERVO +B AVR
Q105 SERVO +B AVR control Outputs by ON.
Ref.No Element/Function Operation/Condition
Q106 IC3 control Switching-stops by ON.
Q107 AVR for illumi AVR for illumi
Q108 Illumi control Iuminosity-adjusts by the pulse.
Q109 AVR for illumi AVR for illumi
Q110 Power supply for amber Power supply for amber
Q111 Power supply for white Power supply for white
Q112 Illumi switching control (amber) Switching by ON
Q113 Illumi switching control (white) Switching by ON
Q114 Dimmer control for indicators Dimmer by ON
Q115 AVR control for illumi Output by ON
Q141 PON(A) AVR Analog system 8V PON(A) AVR
Q142 PON(A) AVR Analog system 8V PON(A) AVR
Q143 PON(A) AVR control Output by ON
Q151 System ACC System ACC:ON by ON
Q201 audio line mute Lch mute ON by ON
Q202 audio line mute Rch mute ON by ON
Q203 Q201 aud Q202 control Mute ON by ON
Q501 Small detection Detection by ON
BLOCK DIAGRAM
COMPONENTS DESCRIPTION
CS-434HU/HC