© 2000-1 PRINTED IN JAPAN
B51-7573-00 (N) 1895
CD RECEIVER
SERVICE MANUAL
KDC-7080R/RY
KDC-7080RV/RYV
KDC-7080R
DISP
Escutcheon assy
(B07-2139-03)
Panel assy
KDC-7080R/RY
: (A64-1866-02)
KDC-7080RV/RYV: (A64-1953-02)
Dressing panel
(A21-4010-03)
DC cord
KDC-7080R/RY
: (E-30-4788-05)
KDC-7080RV/RYV: (E-30-4789-05)
Torsion coil spring
(G01-2924-04)
Screw set
(N99-1683-05)
Mounting hardware assy
(J21-9491-03)
Plastic cabinet assy
(A02-1489-03)
Lever
(D10-4301-14)
Lever
(D10-4302-14)
Antenna adaptor
(T90-0523-05)
Remote controller assy
(A70-0886-15)
Front glass
KDC-7080R/RY
: (B10-3105-01)
KDC-7080RV/RYV: (B10-3106-01)
Illustration is KDC-7080R
Extension cord
Parts No.
CD mechanism (22P)
W05-0618-00
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).
KDC-7080R/RY/RV/RYV
2
BLOCK DIAGRAM
COM+B
FM+B
AM+B
E2PR
OM
DIMMER
2W
A
Y
MUTE
A
C
C
DET
.
SRM
PHO
T
B
U
DET
.
SRM
DRIVER
A8V
SER
V
O
DC/DC
SW14V
SW5V
B
U5V
P
CON
ANT
-CON
MUTE
DRIVER
4.5V
PRE
MUTE
E's
PO
WER
IC
IC4
IC14
u-com
IC1
CD
CH
IC10
IC7-9
IC5
IC2
F/E
MECHA
DET
.
E-V
OL
PREOUT
SP-OUT
DIMMER
TEL-MUTE
AC
C
ANT
-CONT
P-CON
BA
CK
UP
DECORDER
RDS
IC11
EX.AMP
CONTR
OL
AV
R
RESET
IC
IC15
ANT
.IN
AMP
IC12
NOISE
PREOUT
OUTPUT
V
O
LT
A
G
E
CONTR
OL
EX.AMP
NA
VI-MUTE
P
ANEL
5V
4.5VPRE
IC3
IC6
ILLUM
+B
LCD
LCD
CONT
.1
G/R
SW
KEY
MA
TRIX
LCD
TYPE
LOCK
SW
P
ANEL
REMO
RESET
SW
PLL
CLK
CH
MO
SW
SER
V
O+B
LO/EJ
ST
OP
MUTE
D
ATA
S
CLK
SW2
CS
SQR
D
ATA
M
SW3
SW1
A8V
B
U5V
RST
REQ
C
CLK
CH-CON
D
ATA
H
REQ
H
CD
AM
FM
MUTE
RESET
SRMSW1
SRMDET
SRMSW2
RDCK
RDDA
QUA
L
SDA
SCL
A8V
+B
-B
+B
-B
PLL
D
A
T
A
PLL
CE
S-METER
SW5V
SW5V
D
ATA
C
BA
CK
UP
750mV
4500mV
CHANGER
AM
4.5V
PRE
2250mV
FM
160mV
1200mV
1200mV
213mV
(E
TYPE)
400mV
(K
TYPE)
RDS
OUT
FM+B
NOISE
4500mV
CD
K
TYPE
MODE
4500mV
4500mV
1069mV
1715mV
E
TYPE
3600mV
600mV
1800mV
3600mV
K
TYPE
E
TYPE
3600mV
1372mV
855mV
3600mV
1.8V
PRE
SRMSUB-
SRMSUB+
DRIVER
MUTE
B
U5V
P
ANEL
5V
DIMMER
PWM
CONTR
OL
ILLUM
+B
IS
LCD
ONL
Y
RST
L
D
ATA
L
L
CLK
L
CE
L
D
ATA
S
DIMMER
(X86)
KDC-7080R/RY/RV/RYV
3
MICROCOMPUTER'S DESCRIPTION
System
µ-com : UPD784217GC (X25-)
Terminal description
No.
Pin name
Function
I/O
Description
Processing Operation
1
P120/RTP0
CHCON1
O
Changer 1 control
Active : Hi
2
P121/RTP1
CH_MUTE
I
Changer muting input
MUTE Requested : Hi
3
P122/RTP2
REQH
O
Handshake request to changers
Active : Lo
4
P123/RTP3
ILL_ON
O
Illumination output
Active : Hi
5
P124/RTP4
NC
O
Open
6
P125/RTP5
CD_SW2
I
12cm DISC detection
ON : Lo
7
P126/RTP6
CD_SW1
I
Loading detection
ON : Lo
8
P127/RTP7
NC
O
Open
9
Vdd
Vdd
-
Positive power supply
10
X2
X2
-
Main clock connection
11
X1
X1
-
Main clock connection
12
Vss
Vss
-
GND
13
XT2
XT2
-
Sub clock connection
14
XT1
XT1
-
Sub clock connection
15
RESET
RESET
I
Reset input
Active : Lo
16
P00/INTP0
CH_RST
O
Changer reset output
Active : Lo
17
P01/INTP1
R_CLK
I
RDS clock input
18
P02/INTP2/NMI
REQC
I
Handshake request from changer
Active : Lo
19
P03/INTP3
N C
I/O
20
P04/INTP4
N C
I/O
21
P05/INTP5
N C
I/O
22
P06/INTP6
SC_REQ
I
Handshake request from panel
µ-com
23
AVdd
AVdd
-
A/D analog power supply
24
AVref0
AVref
-
A/D reference voltage input
25
P10/ANI0
PHONE
I
PHONE detection terminal
1V or less : PHONE
2.5V or more : NAVI MUTE
26
P11/ANI1
SRM_SW1
I
SRM position detection
Open : Hi
27
P12/ANI2
NOISE
I
FM noise detection
Analog input
28
P13/ANI3
SMETER
I
FM signal meter detection
Analog input
29
P14/ANI4
IF_MODE
I
K2I IF selector
Wide : Hi / Narrow : Lo
30
P15/ANI5
NC
I
GND
31
P16/ANI6
M_MUTE_R
I
Mute request from meshanism
Mute requested : Lo
32
P17/ANI7
M_MUTE_L
I
Mute request from meshanism
Mute requested : Lo
33
AVss
AVss
-
A/D GND
34
P130/ANO0
EXT_AMP
O
EXT_AMP control
35
P131/ANO1
M_RST
O
Reset output to mechanism
Reset : Lo
36
AVref1
-
D/A reference voltage input
37
P70/RxD2/SI2
DATAC
I
Data line from changer
38
P71/TxD2/SO2
DATAH
O
Data line to changer
39
P72/ASCK2/SCK2
CH_CLK
I/O
Clock line from/to changer
40
P20/RxD1/SI1
L_DATAL/SC_DATA
I
Data line from LCD driver
41
P21/TxD1/SO1
L_DATAS/MC_DATA
O
Data line to LCD driver
42
P22/ASCK1/SCK1
L_CLK/MC_CLK
I/O
Clock line to LCD driver
43
P23/PCL
M_STOP
I/O
Stop request to mechanism
Stop Requested : Lo
44
P24/BUZ
BEEP
O
Beep output
Active : Hi
45
P25/SI0
PLL_CE
O
CE output to PLL
46
P26/SO0
PLL_DATA
I/O
Data in/out with PLL
47
P27/SCK0
PLL_CLK
O
Clock output to PLL
48
P80/A0
CD_SW3
I
Switch detection
ON : Hi
49
P81/A1
LO/EJ
O
Loading/Eject control
Loading : Lo / Eject : Hi
KDC-7080R/RY/RV/RYV
4
MICROCOMPUTER'S DESCRIPTION
No.
Pin name
Function
I/O
Description
Processing Operation
50
P82/A2
MOSW
O
Motor output
Loading : Hi / Eject : Lo
51
P83/A3
MECH_DET
I
Mechanism detection
ON : Hi / OFF : Lo
52
P84/A4
PAN 5V
O
Panel detection
OFF : Hi
53
P85/A5
L_CE/P_RST
O
CE to LCD driver / Panel
µ-com reset
54
P86/A6
L_INH/MC_REQ
O
Reset to LCD driver
55
P87/A7
DIM_CON
O
DIM control
56
P40/AD0
QUAL
I
RDS receiving condition
Good : Hi
57
P41/AD1
R_DATA
I
RDS data input
58
P42/AD2
SRM_SUB
O
SRM sub motor output
59
P43/AD3
SRM_SUB+
O
SRM sub motor output
60
P44/AD4
SRM_DET
I
SRM mechanism detection
ON : Lo / OFF : Hi
61
P45/AD5
SRM_SW2
I
SRM eject detection
: Eject
62
P46/AD6
FM_SD
I
FM SD input
Station detected : Hi
Not detected : Lo
63
P47/AD7
NC
O
Open
64
P50/A8
AFC
O
Noise detection time constant switching
During reception : Hi
During search : Lo
65
P51/A9
-
O
66
P52/A10
WIDE
O
K2I Wide output
Active : Hi
67
P53/A11
NARROW
I/O
K2I Narrow output
Active : Hi
68
P54/A12
AM+B
O
AM power supply
Active : Hi
69
P55/A13
FM+B
O
FM power supply
Active : Hi
70
P56/A14
NC
O
Open
71
P57A15
NC
O
Open
72
Vss
-
GND
73
P60/A16
TYPE0
I
Destination type switch
74
P61/A17
TYPE1
I
Destination type switch
75
P62/A18
TYPE2
I
Destination type switch
76
P63/A19
ST_TYPE0
I
IC2 Var. 3 destination type 0
Initial value : Lo
77
P64/RD
ST_TYPE1
I
IC2 Var. 3 destination type 1
Initial value : Lo
78
P65/WR
NC
O
Open
79
P66/WAIT
PRE MUTE R
O
Audio mute
Active : Lo
80
P67/ASTB
PRE MUTE L
O
Audio mute
Active : Lo
81
Vdd
-
Positive power supply
82
P100/TI5/TO5
NC
O
Open
83
P101/TI6/TO6
SVR
O
Power IC reset
Power ON : Lo
84
P102/TI7/TO7
NC
O
Open
85
P103/TI8/TO8
P_MUTE
O
Power IC muting
Active : Lo
86
P30/TO0
ANT_CON
O
Antenna control
Active : Hi
87
P31/TO1
IC2_SCK
O
IC2, IC5, EEPROM clock line
88
P32/TO2
DIMMER
I
Dimmer detection
Active : Lo
89
P33/TI1
P_CON
O
Power control
Active : Hi
90
P34/TI2
ACC_DET
I
ACC detection
ACC OFF : Hi
91
P35/TI00
REMO
I
Remote control input
92
P36/TI01
P_ON
O
µ-com peripheral power supply
Active : Hi
93
P37
BU_DET
I
Momentary power down detection
Momentary power down : Hi
94
TEST
Å\
-
Test
GND
95
P90
IC2_SDA
I/O
IC2, IC5, EEPROM data line
96
P91
MUTE
O
Muting output
Active : Hi
97
P92
SW5
O
5V power supply
Active : Lo
98
P93
MS_CL
O
CD mechanism clock line
99
P94
MS_DA
I/O
CD mechanism data line
100
P95
Å\
O
KDC-7080R/RY/RV/RYV
5
TEST MODE
1. Entering the test mode
Reset the unit by pressing the FM key and the Preset 6
key at the same time.
When the test mode is entered, all indicators light up.
2. Releasing the test mode
Reset the unit by pressing the preset 6 key.
Note: The unit cannot be reset by simply turning ACC
off, turning power off, or turning power off for a
brief moment.
3. Voltage adjustment on the FM S-meter
(1) Enter the test mode.
(2) While pressing the Preset 1 key, keep on pressing
the Preset 6 key.
(3) When the adjustment is made, "ADJ OK" is dis-
played. When adjustment cannot be made, "ADJ
NG" is displayed.
4. Writing SD voltage for the AM
(1) Enter the test mode.
(2) While pressing the Preset 1 key, keep on pressing
the Preset 6 key, which results in writing SD.
5. Forced switching of K2I Auto/Manual
In tuner-mode, keeping on pressing TI key, and the Auto
and Manual modes can be switched. The initial condi-
tion is in manual modes, which is indicated by flashing
DUAL dots.
6. Forced narrow/wide switching of K2I
In turner-mode, when Preset 6 is pressed, forced nar-
row/wide mode switching is made. The initial condi-
tion is in wide mode and the NEWS dot flashes.
7. CD receiver test mode specification
By pressing the track-up key, the unit jumps to the fol-
lowing tracks:
No. 9
No. 15No. 10No. 11No. 12No 13No.
14
No. 9 (Goes back to the first position.)
When the track-down key is pressed, the unit jumps to
the previous track.
8. MD test mode specification
After loading MD, the unit plays No. 7. Then, the unit
jumps as follows each time it trackups.
No. 2
No. 13No.23No.30
NO.34
No. 7 (Goes back to the first position.)
When the track-down key is pressed, the unit jumps to
the previous track.
9. Tape test mode
In the initial step, the blank skip is turned off.
10. Audio-related items
· The volume is -10dB (on display, it is 30).
· The loudness is off and CRSC is off regardless of func-
tions.
· Buss/treble and balance/fader are to be adjusted by
the up/down key to full-boost/fullcut and fullfront/
fullrear respectively.
· The high-pass filter is adjusted by the up-key to
throughput/100Hz/200Hz and, by the down-key, to
200Hz/100Hz/throughput.
· Other adjustments are the same as before.
11. Backup current measurement
When reset in ACC-off condition (backup is on), the mute
terminal goes off after 2 seconds instead of 15 seconds,
when the ACC is turned off in the test mode. (In this
case, the panel/CD/C/MD mechanisms are not activated.)
12. Registering security code after changing E2PROM at
the services (Only for type M. However, RDS models
are excluded)
(1) Put the unit into the test mode (Refer to 1. Above
for how to enter the test mode.)
(2) Press SRC key to put the unit into the tuner mode.
(3) Press Audio key for one second and put the unit into
the menu mode.
(4) Press FM/AM key and then select "SECURITY."
(5) Press track up/down key for full 2 seconds.
(6) Press Preset 1, Preset 2, Preset 3, and Preset 4 and
then input codes.
Example: Inputting "3510."
· Press 1 key 4 times.
· Press 2 key 6 times.
· Press 3 key 2 times.
· Press 4 key once.
(7) Press DISP key for 3 seconds and confirm that
"APPRODVED" is displayed.
(8) Release the test mode. (Refer to "2. Releasing the
test mode" above.)