© 2005-2 PRINTED IN JAPAN
B53-0246-00 (N) 609
CD RECEIVER
SERVICE MANUAL
KDC-3028
KDC-328
SPARE TDF PANEL
MAIN UNIT NAME
TDF PARTS No.
TDF NAME
KDC-3028
Y33-2150-68
TDF-53DB
KDC-328
Y33-2150-67
TDF-53D
PANEL ASSY
KDC-3028 (A64-3630-12)
MOUNTING HARDWARE ASSY
(J22-0011-03)
LEVER
(D10-4589-04) x2
SCREW SET
(N99-1763-05)
DC CORD
(E30-6415-15)
REMOTE CONTROLLER ASSY (RC-517)
(A70-2069-05)
BATTERY
(Not supplied)
SCREW SET
(N99-1757-05)
* ESCUTCHEON
(B07-xxxx-xx)
PLASTIC CABINET ASSY
(A02-2743-03)
MOUNTING HARDWARE (R)
(J22-0259-04)
MOUNTING HARDWARE (L)
(J22-0258-04)
DISP
DISP
C.S.
FF
FF
MENU
MENU
VOL
VOL
AUD
AUD
SET
SETUP
UP
SCRL
AME
AUTO
ATT
SCAN
RDM
REP
M.RDM
KDC-3028
FF
FF
MENU
MENU
VOL
VOL
AUD
AUD
SET
SETUP
UP
SCRL
AME
AUTO
SCAN
RDM
REP
M.RDM
DISP
DISP
C.S.
KDC-328
ATT
PANEL ASSY
KDC-328 (A64-3486-12)
* Depends on the model. Refer to the parts list.
This product uses Lead Free solder.
KDC-3028/328
2
BLOCK DIAGRAM
SERVO
A8V
BU5V
AUDIO OUT
AM+B
MPX OUT
MPX IN
AUDIO OUT
BU5V
A8V
BACK
SP OUT
BACK UP
ACC
OEM REMOTE
TEL MUTE
P-ANT
P-CON
PAN5
SERVO
P-ANT
AM+B
A8V
BU5V
P-CON
AM+B
AUDIO+B
VCC
ILLUMI
BU5V
ILLUMI
PAN5V
KEY
:
CHANGER
CD/MD
FM (E)
FM (J/K)
AM (J/K)
AM (E)
:
:
:
:
: 1800mV
1372mV
600mV
855mV
3600mV
3600mV
CD5V
800mV
1200mV
BU5V
MECHA
CD or MD
CHANGER
J2
E-VOL
IC10
&
AM AGC
Q501
FM AGC
L506
ANT
J4
TUNER
IC11
E2PROM
u-COM
IC1
IC7
RST IC
IC8
PRE MUTE
Q351,352
IC4
POWER IC
MUTE LOGIC
IC6
J1
PAN5V
Q151
Q72,73
SERVO
VFD REG
IC15
POWER SUPPLY IC
IC3
ED1
VFD
with
VFD DRIVER
IC1
REMOTE
IC2
VOL
S1
KEY MATRIX
PANEL DET
S151
.......
.......
J6
PRE OUT
SURGE DET
BU DET
ACC DET
DECODER
RDS
Q152
ILLUMI SW
KEY
EJECT
ILLUMI
EJECT
Q53
Q52
Q51
OEM
Q156
S152
ELECTRIC UNIT (X34-)
SWITCH UNIT (X16-)
7
VREF
L-ch
R-ch
A. GND
A8V
D. GND
BU5V
LOE/LIM SW
12EJE SW
LOS SW
S7.5V
LO/EJ
MOTOR
S. GND
VREF
VREF
2
2
4
DRV MUTE
MUTE
DOUT
DATA
4
2
CLK
MSTOP
MRST
MUTE L
MUTE R
2
2
H
L
12
5
2
4
3
20
21
13
15
1
14
9
7
6
8
18
12
11
10
22
19
EF
A
C
B
TR COIL
FO COIL
APC
SERVO
u-COM
IC2
Q1
16.934MHz
CLOCK
X1
DRIVER
MOTOR
IC3
PROCESSOR
LPF
IC4
8V SW
Q4
Q3
SW
S3
S1
S2
D. GND
RF AMP
IC1
REF
5V REG
D2
S. GND
A. GND
D. GND
SLED
LOADING
5V SW
Q2
D. GND
D. GND
LOADING & SLED
MOTOR
SPINDLE MOTOR
AMP
Q5,6,D3
CURR.
DM1
DM2
SW +5V
A+5V
PICK-UP (DPU1)
CD PLAYER UNIT (X32-5750-00)
BOARD (X34-)
MOTHER
MECHA ASSY (X92-)
KDC-3028/328
3
COMPONENTS DESCRIPTION
ELECTRIC UNIT (X34-3390-1x)
Ref. No.
Application / Function
Operation / Condition
IC1
SYSTEM
µ-COM
System control.
IC3
POWER SUPPLY
DC5V x 1, 7.8V x 1, 8.0V x 1, 10.2V, P-CON, P-ANT output.
IC4
POWER IC
Signal amplifier.
IC6
MUTE LOGIC
Mute action control.
IC8
RESET IC
"L" when detection voltage is below 3.6V.
IC10
E-VOL & TUNER
E-vol, tuner, stereo decode.
IC11
E2PROM
Save & load for tuner adjustment data.
IC15
LED & VFD+B
Output voltage 11.25V for LED and VFD.
Q51
SERGE DET
"ON" when the base goes "H".
Q52
BU DET
"ON" when the base goes "H" during BU is applied.
Q53
ACC DET
"ON" when the base goes "H" during ACC is applied.
Q54
BU5V SW
"ON" when the base goes "L".
Q71
SERVO+B CONTROL SW
"ON" when the base goes "H".
Q72
SERVO+B AVR
Output voltage is 7.5V.
Q73
SERVO+B AVR
Output voltage is 7.5V.
Q74
IC3 CONTROL SW
"ON" when the base goes "H". Output voltage is 10.2V.
Q151
PANEL 5V SW
"ON" when the base goes "L".
Q152
FL+B SW
"ON" when the base goes "L".
Q153
FL+B SW
"ON" when the base goes "H".
Q156
EJECT ILLUMI SW
"ON" when the base goes "H".
Q252
IC4 STBY SW
"ON" when the base goes "L".
Q330
Q351/Q352 MUTE DRIVER
"ON" when the base goes "L".
Q351
Lch PREOUT MUTE SW
Audio preout is muted when the base goes "H".
Q352
Rch PREOUT MUTE SW
Audio preout is muted when the base goes "H".
Q501
AM RF AMPLIFIER
Adjusts for Gain.
CD PLAYER UNIT (X32-5750-00)
Ref. No.
Application / Function
Operation / Condition
Generation of RF signal based on the signals from the APC circuit and pickup, and
IC1
RF AMPLIFIER responding
generation of servo error (focusing error and tracking error) signals.
to CD-RW
Detection of dropout, anti-shock, track crossing and off-tracking conditions, included
gain control function during CD-RW.
Focusing, tracking, sled and spindle servo processing.
IC2
CD SIGNAL PROCESSOR
Automatic adjustment (focusing, tracking, gain, offset and balance) operations.
built-in
µ-COM
Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data
interpolation processing) operations, and microcomputer function.
IC3
4ch BTL DRIVER
Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
eject operation.
KDC-3028/328
4
COMPONENTS DESCRIPTION
Ref. No.
Application / Function
Operation / Condition
IC4
L.P.F. (LOW PASS FILTER)
2nd low pass filter for audio signals.
Q1
APC (AUTOMATIC POWER CONTROL)
LD power control.
Q2
DIGITAL +5V SW
"ON" When P. ON signal goes "L".
Q3
Q4 SW
"ON" When P. ON signal goes "L" (SW+5V is ON).
Q4
ANALOG +8V SW
"ON" When P. ON signal goes "L" (Q3 is ON).
Q5, 6
CURRENT AMP
Current driver.
SWITCH UNIT (X16-2910-11)
Ref. No.
Application / Function
Operation / Condition
IC1
VFD DRIVER
IC2
REMOTE CONTROL
Q4
SW 5V
The power supply of IC2 turns on when Q4's base goes "L".
Q10
RED LED SW
RED LED turns on when Q10's base goes "H".
DAUGHTER UNIT (X89-2690-10)
Ref. No.
Application / Function
Operation / Condition
Q221, 222
2-PREOUT MUTE
"ON" when the base goes "H".
Q225
2-PREOUT MUTE
"ON" when the base goes "H".
KDC-3028/328
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
SYSTEM
µ-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No.
Pin Name
I/O
Application
Processing Operation
1
DCERR
I
DC offset detection input
2
LINE MUTE
I
Phone detection
TEL MUTE : Below 1V
3ROTARY CW
I
Rotary encoder input
4AVSS
-
5
TUN TYPE1
I
E-VOL setting switch
Refer to "TUN TYPE" on the TRUTH TABLE
6
TUN TYPE2
I
E-VOL setting switch
Refer to "TUN TYPE" on the TRUTH TABLE
7AVREF1
-
8
VFD DATAF
I
Data input from FVD driver
9
VFD DATAS
O
Data output to FVD driver
10
VFD CLK
O
Clock output to FVD driver
11
VFD RST
O
Reset output to FVD driver
Display OFF, Key reset, Panel opened : L
Display ON, Key scan : H
12
VFD CE
O
Chip enable output to VFD driver
13
ROTARY CCW
I
Rotary encoder input
14
FLIP DET
I
Panel detection
Panel released : H, Panel ON : L
15
PWIC BEEP
O
Beep output
16
LX DATA S
I
Data from slave unit
17
LX DATA M
O
Data to slave unit
18
LX CLK
I/O
LX-BUS clock
19
NC
-
20
TUN ADJ
I
For adjusting IC10
Adjustment=H, PS1-1, 2=L, PS1-3=Hi-Z, PS2-1, 2=Hi-Z
TUN DATA, CLK=Hi-Z
21
TUN SD
I
Tuner search stop input
H : Station exists, L : Station does not exist
22
LX RST
O
Hard reset to slave unit
H : Reset, L : Normal condition
23
LX CON
O
Start-up request to slave unit
H : Slave unit ON, L : Slave unit OFF
24
LX REQ M
O
Communication request to slave unit
25
AUD SDA
I/O
Tuner + volume I2C data input and output
26
AUD SCL
I/O
Tuner + volume I2C clock input and output
27
PWIC STBY
O
Power IC standby output
Power IC ON : H, Power IC OFF : L
28
VOL MUTE
O
E-VOL mute output
L : Mute OFF, Hi-Z : Mute ON
29
PWIC MUTE
O
Power IC mute output
Power OFF : L, Standby : L, Tel mute : L
30
RDS AFSM
-
31
RESET2
O
Mute for reset
Output L
32
NC
-
33
VSS1
-
34
NC
-
35
ACC DET
I
ACC detection
ACC exists : L, ACC does not exist : H
36
BU DET
I
Momentary power-down detection
BU exists : L, BU does not exist (Momentary power-down) : H
37
PON
I/O
SW5V/SW14V control
Power ON : L, Power OFF : Hi-Z
38,39
PS2-2, PS2-1
O
Power supply control output
Refer to "POWER IC CONTROL" on the TRUTH TABLE