KENWOOD KDC-4080R Service Manual

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Service Manual for KENWOOD KDC-4080R, downloadable as a PDF file.

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© 1999-12 PRINTED IN JAPAN
B51-7565-00(S) 1899
SERVICE MANUAL
CD RECEIVER
KDC-4080R/RV
/RY/RYV
Extension cord
Parts No.
CD mechanism(22P)
W05-0618-00
SRC
LOUD
PWR
OFF
VOL ADJ
NAME.S
PTY
MENU
CLK
SCAN
RDM
REP
D.SCN
M.RDM
KDC-4080R
40W 4
X
CD MD-CHANGER CONTROL
DISC
DISC
TI
Knob(RELEASE)
(K24-1948-14)
Knob(SRC)
(K24-1924-14)
Escutcheon
(B07-2181-02)
Front glass
(B10-3128-11)
Panel assy
(A64-1896-12)
The MECHANISM OPERATION DESCRIPTION is the same as model KDC-S3007 and KDC-5050RG.
Please refer to the service manual for model KDC-S3007(B51-7029-00) or KDC-5050RG(B51-7099-00).
Plastic cabinet assy
(A02-1486-13)
Lever x2
(D10-3031-04):KDC-4080RY/RYV
(D10-4197-04):KDC-4080R/RV
Mounting hardware assy
(J21-9491-03)
Antenna adaptor
(T90-0523-05)
DC cord
(E30-4790-05):KDC-4080R/RY
(E30-4791-05):KDC-4080RV/RYV
background image
© 1999-12 PRINTED IN JAPAN
B51-7565-00(S) 1899
SERVICE MANUAL
CD RECEIVER
KDC-4080R/RV
/RY/RYV
Extension cord
Parts No.
CD mechanism(22P)
W05-0618-00
SRC
LOUD
PWR
OFF
VOL ADJ
NAME.S
PTY
MENU
CLK
SCAN
RDM
REP
D.SCN
M.RDM
KDC-4080R
40W 4
X
CD MD-CHANGER CONTROL
DISC
DISC
TI
Knob(RELEASE)
(K24-1948-14)
Knob(SRC)
(K24-1924-14)
Escutcheon
(B07-2181-02)
Front glass
(B10-3128-11)
Panel assy
(A64-1896-12)
The MECHANISM OPERATION DESCRIPTION is the same as model KDC-S3007 and KDC-5050RG.
Please refer to the service manual for model KDC-S3007(B51-7029-00) or KDC-5050RG(B51-7099-00).
Plastic cabinet assy
(A02-1486-13)
Lever x2
(D10-3031-04):KDC-4080RY/RYV
(D10-4197-04):KDC-4080R/RV
Mounting hardware assy
(J21-9491-03)
Antenna adaptor
(T90-0523-05)
DC cord
(E30-4790-05):KDC-4080R/RY
(E30-4791-05):KDC-4080RV/RYV
background image
KDC-4080R/RV/RY/RYV
2
CONTENTS
BLOCK DIAGRAM
BLOCK DIAGRAM .............................................................. 2
COMPONENT DESCRIPTION ........................................... 3
MICROCOMPUTER'S TERMINAL DESCRIPTION ............ 4
ADJUSTMENT .................................................................... 6
PC BOARD ......................................................................... 7
SCHEMATIC DIAGRAM ................................................... 11
EXPLODED VIEW ............................................................ 19
PARTS LIST ...................................................................... 22
SPECIFICATIONS ............................................................ 29
FM+B
AM+B
RDS
DECODER
AMP
NOISE
TEL-MUTE
ACC DET.
BU DET.
WITH
LCD DRIVER
KEY MATRIX
LCD
REMOTE
A8V
SERVO
SW14V
ILLUM
SW5V
BU5V
P-CON
MUTE DRIVER
MUTE
POWER IC
u-COM
and
PRE OUT
SP-OUT
TEL-MUTE
ACC
P-CON
BACK UP
E-VOL
PAN 5V SW
203mV
170mV
1200mV
1200mV
MPX
CONTROL
Q202,203
Q200,201
IC2
Q155,156
IC5,
IC4
IC6
Q13
Q12
Q17-20
Q1,2
Q14
Q5,6
Q7
Q3,4
Q8-11
Q207
IC1
IC2
TUN5V
BUFF
PROTECTION
THERMAL
DSI
RST
RST SW
Q204
,206
IC1
IC3,Q50
Q205
Q151-154
S-METER
CH
MO SW
SERVO
LO/EJ
STOP
RST
CS
MUTE
SRQ
DATA S
DATA M
CLK
SW3
SW2
SW1
A8V
RST
DATA C
REQ H
CH-CON
DATA H
REQ C
CLK
CD
AM
FM
MUTE
D
ATA
S
CLK
CE
D
ATA
L
RES
RDCK
RDD
A
QU
A
L
NOISE
SD
A
SCL
A8V
SW5V
BU5V
UP
AUDIO OUT
BU5V
MUTE
PAN 5V
SD
A
SCL
VDD
PHONE
ACC DET.
BU DET.
REMO
AFC
SD
DSI
BU5V
SW5V
BU5V
AM+B
FM+B
SD
S-METER
PAN 5V
BACK
P
ANEL
PANEL
CD
CH
TUNER
(X13)
,208
QUAL
Q51
SVR SW
SVR
Q150
VDD 5V
IF1/IF2/PLL+B
LEVEL
ILL. SW
3529mV
AM
FM
792mV
1276mV
CD-CH
CD
3529mV
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KDC-4080R/RV/RY/RYV
3
qELECTRIC UNIT(X25-84X2-7X)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
UPD780058GC107
System MI-COM.
IC2
TDA7400D
E-VOL. & N.C. MPX
IC3
PST9130NR
Reset IC
"Lo": Detection voltage below 3.0V
IC4
TDA7384A
Power IC
IC5
HD74HC27FP
Mute logic
3 input NOR gate x3
IC6
TDA7479D
RDS decoder
Q1
2SB1565F(E,F)
BU 5V AVR
Inverted darlington connection
Q2
2SC1740S
ON during BU applied
Q3
DTA124EKorUN2112
SW14V
Audio 8V AVR and Servo AVR ON/OFF control
Q4
DTC144EKorUN2213
Q3 is turned ON when Q4's base goes "Hi".
Q5
2SB1184
Audio 8V AVR
Q5 is turned ON when Q6's base goes "Hi".
Q6
2SC1740S
Inverted darlington connection
Q7
2SD2396F40
Servo AVR
ON when the base goes "Hi".
Q8
DTC144EKorUN2213
Illumination AVR
Q10 is turned ON when Q8's base goes "Hi".
Q9
DTA124EKorUN2112
Q10
2SB1184
Q11
2SC1740S
Q12
2SC1740S
BU detection(Momentary power down detection)
ON when the base goes "Hi" during BU applied.
Q13
2SC1740S
ACC detection
ON when the base goes "Hi" during ACC applied.
Q14
2SA1036K
SW 5V
ON when the base goes "Lo".
Q17
2SB1277(Q,R)
P-CON SW
Q17 is turned ON when Q20's base goes "Hi".
Q20
DTC114YKorUN2214
ON while power is on or CD loading/eject.
Q18
2SA1037K
P-CON protection
Protect Q17 by turning ON when P-CON output is grounded.
Q19
DTA124EKorUN2112
Prevents Q18 tuning ON during start-up after power ON.
Q50
DTC144EKorUN2213
RESET SW
System RESET is activated when the panel reset SW is pressed.
Q51
2SC2412Kor2SD601A
DSI SW
ON when the base goes "Hi".
Q150
DTC114YKorUN2214
SVR SW
POWER IC RESET is activated when the base goes "Hi".
Q151
DTC143TKorUN2216
Audio mute SW
Audio pre-outs are muted when the base goes "Hi".
Q152
DTC143TKorUN2216
Q153
DTC143TKorUN2216
Q154
DTC143TKorUN2216
Q155
DTA124EKorUN2112
Mute driver for Audio mute SW
ON when the base goes "Lo".
Q156
DTC144EKorUN2213
E-VOL. mute SW
E-VOL. is muted when the base goes "Hi".
Q200
2SB1277(Q,R)
FM+B SW
Q200 is turned ON when Q201's base goes "Hi".
Q201
DTC124EKorUN2212
ON during FM reception
Q202
2SB1277(Q,R)
AM+B SW
Q202 is turned ON when Q203's base goes "Hi".
Q203
DTC124EKorUN2212
ON during AM reception
Q204
2SC1740S
Tuner audio out buffer
Q205
DTC114TKorUN2215
AFC time constant SW
OFF during FM seek,ON during FM reception
Q206
DTA124EKorUN2112
Q205 is turned OFF when Q206's emitter goes "Lo".
Q207
2SA1037K
Panel detection SW
ON when the base goes "Lo" during the panel closed.
Q208
2SC1740S
Noise buffer
COMPONENT DESCRIPTION
qSWITCH UNIT(X13-96X2-7X)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
LC75883E
LCD driver with key-matrix
IC2
RS-171
Remote control light sensor
Q1
DTA114EKorUN2111
key-matrix permission SW
Ready on key-matrix
Q2
2SD2114K
key illmination SW (Green)
ON when the base goes "Hi".
Q3
2SD2114K
key illmination SW (Red)
ON when the base goes "Hi".
qCD PLAYER UNIT(X32-4600/4700-00)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
AN8806SB
RF amplifier
Generation of RF signal based on the signals from the APC
circuit and pickup, and generation of servo error(focusing
error and tracking error) signals. Detection of dropout, anti-
shock, track crossing and off-track conditions.
IC2
MN662770KA7
CD signal processor bult-in MI-COM.
Focusing,tracking,sled and spindle servo processing. Automatic
adjustment(focusing, tracking, gain, offset and balance) operations.
Digital signal processing(DSP, PLL, sub-codes, CIRC error
correction, audio data interpolaration) operations.
IC4
BA5917AFP
BTL driver
Focusing coil, tracking coil, spindle motor and sled motor driver
IC5
TA78L05F
5V AVR
IC6
NJM4565MD
Low pass filter
Q1
2SA1362(Y)
APC
LD power control
Q2
DTC124EUA
POWER SW
Power on during the source selected CD
Q3
2SA1362(Y)
A.8V SW
A8V line ON/OFF control
Q4
2SA1362(Y)
D.5V SW
D5V line ON/OFF control
Q5
DTC124EUA
MOTOR ON SW
Power on during CD roading or eject action
Q6
2SA1576A
TE LEVEL SW
OFF during CDR play
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KDC-4080R/RV/RY/RYV
4
MICROCOMPUTER'S TERMINAL DESCRIPTION
qTerminal Description
Pin
Function
I/O
Description
Processing Operation
1
AV CONT
O
A/D converter reference voltage control output
"Hi": ON / "Lo": OFF
2
IC2 TYPE0
I
IC2 setting terminal
"Lo": Initial value
3
IC2 TYPE1
I
IC2 setting terminal
"Lo": Initial value
4
AVSS
-
Ground connection terminal
connected to GND
5
M MUTEL
I
Muting request from the MICOM. of CD mecha.
"Lo": Mute request
6
N.C
O
Not used
7
AVREF1
I
D/A converter reference voltage input
8
ILLUMI
O
Illumination AVR ON/OFF control output
"Hi": AVR ON
9
L RES
O
Reset output to the LCD driver IC
"Lo": Reset
10
PANEL
I
Panel open/close detection input
"Lo": Panel closed
11
L DATAL
I
Data input from the LCD driver IC
12
L DATAS
O
Data output to the LCD driver IC
13
L CLK
O
Clock output to the LCD driver IC
14
N.C
O
Not used
15
N.C
O
Not used
16
CH-DATAC
I
Data input from changers
17
CH-DATAH
O
Data output to changers
18
CH-CLK
I/O
Clock input/output with changers
19
L CE
O
CE output to the LCD driver IC
"Hi": Active
20
N.C
O
Not used
21
M RST
O
Reset output to the MICOM. of CD mecha.
"Lo": Reset
22
M STOP
O
Stop request to the MICOM. of CD mecha.
"Lo": Stop
23
MOSW
O
CD mechanism loading motor control output
"Hi": Loading & Eject / "Lo": other
24
PLL SCL
O
Clock output to the tuner pack
25
AM+B
O
AM+B control
"Hi": during AM reception
26
FM+B
O
FM+B control
"Hi": during FM reception
27
M-SCL
I/O
Clock input/output with the MICOM. of CD mecha.
28
DSI
O
DSI output
"Hi": LED ON
29
LO/EJ
I/O
CD mecha.Loading/Eject switching output
"Lo": Loading / "Hi": Eject
30
SW3
I
Down & limit switch detection input
"Hi": Chucking / "Lo": Pickup most inner position
31
R DATA
I
Data input from RDS decoder
32
R QUAL
I
Quality input from RDS decoder
33
VSS1
-
Ground connection terminal
connected to GND
34
SD
I
SD input from the tuner pack
"Hi": Station detected
35
IC2 SCL
O
Clock output to the E-VOL. IC
36
M-SDA
I/O
Data input/output with the MICOM. of CD mecha.
37
PLL SDA
I/O
Data input/output with the tuner pack
38
IC2 SDA
I/O
Data input/output with the E-VOL. IC
39
MUTE
O
Mute control output
"Hi": Mute ON / "Lo": Mute OFF
40
N.C
O
Not used
41
AFC
O
AFC control output
"Lo": during FM seek
42
CH-REQH
O
Request output to changers
"Lo": Request
43
CH-CON
O
Changer control
"Lo": Standby / "Hi": ON
44
N.C
O
Not used
45
P MUTE
O
Power IC mute control
"Lo": Mute
46
SVR
O
Power lC reset terminal
When the momentary power down, after ACC
OFF/ON is detected and after POWER ON/
OFF, the output goes "Hi" temporarily.
47
STBY
O
Power IC standby control output
"Hi": POWER ON mode
48
P CON
O
Power control
"Hi": POWER ON mode except ALL OFF mode
49
P ANT
O
Antenna control
"Hi": during FM/AM reception
50
BEEP
O
BEEP sound output
51
ACC DET
I
ACC detection input
"Hi": ACC OFF / "Lo": ACC ON
52
BU DET
I
Momentary power down detection input
"Hi": When momentary power down detected
or BU OFF / "Lo": BU ON
53
N.C
O
Not used
background image
5
6
KDC-4080R/RV/RY/RYV
MICROCOMPUTER'S TERMINAL DESCRIPTION
KDC-4080R/RV/RY/RYV
NOTE
1. For arm ass'ies Nos.6 and 7 used in the CD mechanism
ass'y, use the combination of the following parts.
Ref.No.
Parts No.
Parts No.
6
D10-4306-04
D10-3083-44
7
D10-4305-04
D10-3084-44
2. The parts numbers of arm ass'ies Nos.6 and 7 shown in the
exploded view of CD mechanism ass'y are D40-4306-04
and D40-4305-04 respectively.
TEST MODE
1. To enter test mode
While holding the "FM" key and preset "6" key, reset the unit.
All indication segments are ON at the beginning of test mode.
2. To release test mode
Simply reset the unit.
(NOTE) The test mode is not canceled by ACC OFF, power
OFF, momentary power down or the panel detaching.
3. CD receiver test mode specification
Pressing the "Track up" key jumps between tracks in the
following order.
No.9 ¡ No.15 ¡ No.10 ¡ No.11 ¡ No.12 ¡ No.13 ¡ No.14
¡ No.9 (Same as the beginning)
Pressing the "Track down" key jumps to the previous track to
the being played.
Pressing the preset "1" key jumps to No.28 track.
4. Audio adjustment
The volume is set to -10dB (which is shown as 30).
Loudness is OFF.
The BASS / TREBLE and BALANCE / FADER controls can
be set to the full boost / full cut and full front / full rear
respectively by pressing the "Track UP" / "Track DOWN" keys.
Sound coordination doesn't appear for the feed.
ADJUSTMENT
Pin
Function
I/O
Description
Processing Operation
54
N.C
O
Not used
55
N.C
O
Not used
56
SW5
O
SW 5V control
"Lo": POWER ON mode
57
P ON
O
Microprocessor peripheral power supply control terminal
"Hi": ACC ON or during CD Loading/Eject
58
TYPE2
I
Destination type input terminal 2
59
N.C
O
Not used
60
RESET
I
Reset input terminal
"Lo": System reset
61
REMO
I
Data input from the remote control light sensor
62
R CLK
I
Clock input from RDS decoder
63
CH-REQC
I
Request input from changers
"Hi": Request
64
SW1
I
Loading detection
"Lo": CD chucking
65
KEY-REQ
I
Key request terminal
"Lo": Request
66
SW2
I
12cm disc detection terminal
"Lo": 12cm disc
67
VSS0
-
Ground connection terminal
connected to GND
68
VDD1
-
VDD connection terminal
69
X2
-
Main clock resonator connection terminal
70
X1
I
Main clock resonator connection terminal
71
IC(TEST)
-
Not used
connected to GND
72
XT2
-
Sub clock resonator connection terminal
N.C.
73
N.C
I
Sub clock resonator connection terminal
connected to BU5V lines
74
VDD0
-
VDD connection terminal
75
AVREF0
I
A/D converter reference voltage input
76
SMETER
I
S-meter input from the tuner pack
77
PHONE
I
PHONE detection input
1V or less: TEL MUTE,2.5V or greater: NAVI MUTE
78
NOISE
I
Noise detection input
79
TYPE0
I
Destination type input terminal 0
80
TYPE1
I
Destination type input terminal 1

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