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CD PLAYER
CS-434HU/HC
SERVICE MANUAL
© 2002-6 PRINTED IN JAPAN
B51-7962-00 (N) 1462
HONDA GENUINE
ACCESSORIES
CD mechanism information is not in this
service manual.
Please, refer to service manual X92-4590-03
(B51-7933-00).
Panel assy
(A64-2766-02)
MODEL PARTS No. DESTINATION
CS-434HU 08A06-4E1-2000 U.S.A. (HONDA)
CS-434HC 08A06-4E3-2000 CANADA (HONDA)
Head unit connection code for servicing E30-4238-05
Knob (EJECT)
(K24-3960-02)
Screw set
(N99-1621-15)
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CS-434HU/HC
BLOCK DIAGRAM
GA-NET2
J1,2
(on B/3)
BU 14V
SYSTEM
ACC
BUS+
BUS-
ILL CONT
Lch+
Lch-
Rch+
Rch-
SHIELD
GND
CD: 2.0V
(BALANCE
OUTPUT)
BU 5V
SRV +B
AUDIO +B
CD 4.7V
ILL
(X25-9460-10) (A/3)
Rch-
Rch+
AUDIO+B
AUDIO+B
1/2VCC
Q201,Q202
RESET
BU DET
(X92-4590-03)
CD MECHA.
(DXM-6513W)
IC21
CD: 1.2V
ANALOG
Rch+
Rch-
UNBALANCE
BALANCE
Rch
MUTE
Rch
12EJE SW
LOE/LIM SW
Lch-
SW
Lch-
to
LOS SW
8EJE SW
MUTE
LO/EJ
MOTOR
DATA
CLK
M STOP
M RST
IC30
GA-NET
BUS I/F
BUS-
BUS+
STBY
Lch+
IC22
Lch+
Lch
Lch
IC1
AUDIO
MUTE
CD DATA
12EJE SW
LOS SW
8EJE SW
LOE/LIM SW
CD LO/EJ
CD MOTOR
CD DATA
CD CLK
CD STOP
CD RST
EJECT
SYS ON
LAMP
AMBER
LAMP
AMBER
DIN
DOUT
BUS DI
BUS DO
SYSTEM u-COM
ILL A
ILL +B
BU 5V
WHITE
ONON
LAMP
WHITE
KEY
EJECT
BU 5V
ILL W
ILL +B
BU DET
SYS ACC
PON (A)
PON (D)
SRV ON
CD4.7V ON
LED-ON
INDICATORLAMP
ON
BLUE LED
(X25- ) (C/3)
RST
ILL
X1
12.58MHz
X2
BU 5V
ILL
SYS ACC
BU DET
BU 5V
PON (D)
PON 5V
PON (A)
AUDIO +B
1/2VCC
AUDIO Vref BUFFER
CD4.7V ON
CD 4.7V
SRV ON
SRV +B
ILL +B
Q501
ILL DET
(on B/3)
Q151
SYS ACC
Q101
BU DET
Q2
PON (D)
SW AVR
IC3
CD 4.7V
REG
Q104
SRV AVR
Q107,109
ILL AVR
Q115 ILL
IC2
ILL CONT
RESET
BU 5V
Q102,103
BU5V
PON (A)
AVR
Q141,142
LAND
COMPONENTS DESCRIPTION
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
IC22 Analog SW
IC30 BUS I/F BUS Interface
Q2 PON(D) control
Q4 Disk indicator control
Q6 IC22 control
Q101 BU detection
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.
Lch&Rch unbalance/
balance conversion
Audio input/output switching
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
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
Q113
Q114
Illumi switching control (amber)
Illumi switching control (white)
Dimmer control for indicators
Switching by ON
Switching by ON
Dimmer by ON
Q115 AVR control for illumi Output by ON
Q141 PON(A) AVR
Q142 PON(A) AVR
Analog system 8V 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 b y ON
Q501 Small detection Detection by ON
2
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CS-434HU/HC
MICROCOMPUTER’S TERMINAL DESCRIPTION
● Microcomputer : uPD703034AYGF-M01-3BA (IC1 : X25)
Pin Pin name I/O Description Processing Operation
CD4.7V ON “L”
1 CD4.7V O SW for CD4.7V CD4.7V OFF “H”
CD mechanism starting “L”
2 NC O Not used
3 CD DATA I/O CD data For CD mechanism communication
Motor ON “H”
4 CD MOTOR O SW for CD motor driver Motor OFF “L”
Motor operation “H”
5 CD CLK O CD clock For CD mechanism communication
6~8 NC O Not used
9 EVDD - 5V potential
10 EVSS - GND potential
11 NC O Not used
Usual “H”
12 CD STOP O CD stop Stop “L”
CD mechanism starting “H”
Usual “H”
13 CD RST O CD reset Reset “L”
Always “H”
Completion of ejection “H”
14 12EJE SW I CD S2 12cm DISC “L”
8cm DISC “H”
15~17 NC O Not used
Load Start “L”
18 LOS SW I CD S1 With no DISC “H”
Those with DISC “L”
19 8EJE SW I CD S4 Completion of ejection “H”
20 LOE/LIM SW I CD S3 DISC chucking “H”
21 IC/Vpp - Write-in voltage
Usual Hi-Z
22 CD LO/EJ I/O CD loading / ejection control Eject “H”
Loading “L”
23 CD MUTE I CD mute request
24,25 NC O Not used
26 BUS DI I IEBUS data input Completion of GA-NET
27 BUS DO O IEBUS data output Completion of GA-NET
28 ILL W O Illumi Control WHITE Illumi OFF “L”
29 ILL A O Illumi Control AMBER Illumi OFF “L”
30 LED IND O CD indicator control
Mute ON “L”
Mute OFF “H”
Illumi ON “H” (AMBER “L”)
When it cannot decode, it blinks by 2Hz.
Illumi ON “H”(WHITE “L”)
When it cannot decode, it blinks by 2Hz.
Indicator ON “H”
CD loading~CD chucking~CD eject “H”
3