© 2001-5 PRINTED IN JAPAN
B51-7791-00 (N) 1737
CD. MD-CH CONTROL CD RECEIVER
KDC-Z727
Z727
SERVICE MANUAL
SRC
PWR
OFF
47Wx4
S.A
FM
AM
DISC
CD MD-CH CONTROL CD RECEIVER
EX
KDC-Z727
AUD
4.5V
PREOUT
LOUD DISP
SCAN
RDM
REP
M.RDM
AUTO
AME
MENU
NAME.S
NF
COMPACT
DIGITAL AUDIO
2ZONE
DAB
TEXT
DPAC
DPAC
SRC
PWR
OFF
47Wx4
S.A
FM
AM
DISC
CD MD-CH CONTROL CD RECEIVER
AUD
LOUD DISP
SCAN
RDM
REP
M.RDM
AUTO
AME
MENU
NAME.S
NF
COMPACT
DIGITAL AUDIO
2ZONE
DAB
TEXT
SIZE AAA BATTERY
(Not supplied)
Plastic cabinet assy
(A02-2711-08)
Panel assy
(A64-2473-08)
Front glass assy
(B10-4204-08)
Escutcheon
(B07-3038-08)
Panel assy
(A64-2625-08)
Front glass assy
(B10-4203-08)
Escutcheon
(B07-3048-08)
Remote controller assy
(A70-0894-05)
Mounting hardware assy
(J21-9585-18)
DC cord assy
(E30-6021-08)
Lever
(D10-4364-08)x2
Stay
(J54-0606-04)
Screw set
(N99-1700-05)
Screw set
(N99-1716-08)
KDC-Z727
Z727
RC-520
KDC-Z727,Z727
2
CONTENTS
BLOCK DIAGRAM .........................................................................................3
COMPONENTS DESCRIPTION.....................................................................5
MICROCOMPUTER'S TERMINAL DESCRIPTION.......................................6
TEST MODE .................................................................................................11
PC BOARD...................................................................................................12
SCHEMATIC DIAGRAM ..............................................................................19
EXPLODED VIEW ........................................................................................27
PARTS LIST .................................................................................................29
SPECIFICATIONS....................................................................BACK COVER
KDC-Z727,Z727
3
2
AM
FM
220mV
490mV
FM
: 400Hz 75kHzDEV 60dBuV
AM
: 400Hz 30%MOD 74dBuV
: 1kHz 0dB
CD
: 1kHz 0dB
CD-CH
: 1kHz 1200mV INPUT
AUX
VOL MAX
CD-CH
CD/CD-CH
CD
: 1150mV
: 1150mV
AUX-IN
1150mV
: 830mV
FM
: 250mV
: 1800mV
: 1800mV
AUX
CD-CH
: 1800mV
CD
AM
CD-CH
CD
AUX
: 1800mV
: 1800mV
: 1800mV
AM
FM
: 250mV
: 830mV
CD-CH
AUX
CD
: 900mV
: 900mV
: 900mV
FM
AM
: 415mV
: 125mV
MUX
REAR
FRONT
FRONT
REAR
REAR
FRONT
NF
REAR
FRONT
: 4500mV
: 4500mV
: 4500mV
: 650mV
: 2100mV
CD-CH
AUX
AM
CD
FM
FRONT
: 4500mV
: 4500mV
: 4500mV
CD
AUX
CD-CH
REAR
AM
FM
: 2100mV
: 650mV
: 4500mV
: 4500mV
: 4500mV
AUX
AM
CD-CH
CD
: 650mV
N/F
FM
: 2100mV
BU 5V
SW 5V
PNL 5V
AUDIO 8V
AUDIO 11V
SERVO 7.5V
VFD 14V
NF
AC OUT
EPROM
TUNER
SGS-IC '01 ST
TDA7407
E-VOL
UPD703033AGC
MAIN u-COM
ANT
IC300
IC900
HD74HC27FP
MUTE IC
IC3
SW-OP AMP
BA3129F
IC201
IC200
BA3121F
GND-ISO
TDA7401D
H.P.F
IC301
S-80842
RST
IC2
ANNP
PANEL u-COM
UPD703033AGC
IC900
LEVEL SIFT
TC74HC4050AFT
MATRIX
KEY
RS-171
REMO
MSM531622F-
ROM
TS
IC961
IC930
IC950
VFD
BA3830F
SA-IC
IC940
NJM4565MD
IC202
SA MIX AMP
TA8263BH
POWER IC
IC500
IC310
NJM4565MD
NJM4565MD
IC312
NJM4565MD
IC311
BU 5V
Q614
Q1
SW 5V
Q612
PNL 5V
Q622
AUDIO 8V
SW 14V
Q624
AUDIO 11V
Q633
Q624
SW 14V
CD 7.5V
Q620
SW 14V
Q624
VFD 14V
Q618
BU 14V
AUX-IN
CD-CH
CD
BLOCK
DIAGRAM
(KDC-Z727)
KDC-Z727
KDC-Z727,Z727
4
2
AM
FM
220mV
490mV
FM
: 400Hz 75kHzDEV 60dBuV
AM
: 400Hz 30%MOD 74dBuV
: 1kHz 0dB
CD
: 1kHz 0dB
CD-CH
: 1kHz 1200mV INPUT
AUX
VOL MAX
CD-CH
CD/CD-CH
CD
: 1150mV
: 1150mV
AUX-IN
1150mV
: 1500mV
FM
: 540mV
: 2600mV
: 2600mV
AUX
CD-CH
: 2600mV
CD
AM
CD-CH
CD
AUX
: 2600mV
: 2600mV
: 2600mV
AM
FM
: 540mV
: 1500mV
CD-CH
AUX
CD
: 1300mV
: 1300mV
: 1300mV
FM
AM
: 750mV
: 270mV
MUX
REAR
FRONT
FRONT
REAR
REAR/NF
FRONT
REAR
FRONT
: 2350mV
: 2350mV
: 2350mV
: 480mV
: 1350mV
CD-CH
AUX
AM
CD
FM
FRONT
: 2350mV
: 2350mV
: 2350mV
CD
AUX
CD-CH
REAR/NF
AM
FM
: 1350mV
: 480mV
BU 5V
SW 5V
PNL 5V
AUDIO 8V
SERVO 7.5V
VFD 14V
NF
AC OUT
EPROM
TUNER
SGS-IC '01 ST
TDA7407
E-VOL
UPD703033AGC
MAIN u-COM
ANT
IC300
IC900
HD74HC27FP
MUTE IC
IC3
SW-OP AMP
BA3129F
IC201
IC200
BA3121F
GND-ISO
TDA7401D
H.P.F
IC301
S-80842
RST
IC2
ANNP
PANEL u-COM
UPD703033AGC
IC900
LEVEL SIFT
TC74HC4050AFT
MATRIX
KEY
RS-171
REMO
MSM531622F-
ROM
TS
IC961
IC930
IC950
VFD
BA3830F
SA-IC
IC940
NJM4565MD
IC202
SA MIX AMP
TA8263BH
POWER IC
IC500
BU 5V
Q614
Q1
SW 5V
Q612
PNL 5V
Q622
AUDIO 8V
SW 14V
Q624
CD 7.5V
Q620
SW 14V
Q624
VFD 14V
Q618
BU 14V
AUX-IN
CD-CH
CD
BLOCK
DIAGRAM
(Z727)
Z727
KDC-Z727,Z727
5
G SUB-CIRCUIT UNIT (X13-9930-00)
COMPONENTS DESCRIPTION
Ref.No.
Element/Function
Operation/Condition
IC1
SYS u-COM
IC2
RESET
System reset
IC3
GATE IC
Gate IC for muting
IC200 GND-ISO
GND-ISO for CD-CH
IC201 SW-OP
CD/CD-CH input switching
IC202 Buff
SA buffer and 1/2 Vdd
IC300 E-VOL/MPX
E-VOL/MPX
IC301 SYSTEM E'S
SYSTEM E'S
IC310-312 Buff
Buffer for 4.5 V PRE-OUT
IC500 POWER AMP
IC900 PNL u-COM
IC930 REMOCON
Remote control light sensor
IC940 SA BPF
BPF for SA
IC950 EXTENSION ROM
IC960 3.3V POWER SUPPLY IC 3.3 V power supply
IC961 LEVEL SHIFT IC
5V-3.3 V level shifting
Q1
5V SW
Q2
MUTE SW
Muting SW for PRE-OUT
Q3
CH RST SW
Q4
LED SW
LED SW for DISC_ and EJ SW
Q5
PNL5V SW
Q6
PNL5V SW
Q9
Buff
IFC buffer
Q10 LED SW
LED SW for DSI
Q100,101 FM+B SW
Q102,103 AM+B SW
Q200 MD/CD-CH SW
CD/CD-CH signal switching
Q201 MUTE DRV
For SA muting
Q202 ALC
ALC
Q300 MUTE
E-VOL muting SW
Q350A,B MUTE DRV
PRE-OUT muting
Q351A,B MUTE DRV
PRE-OUT muting
Ref.No.
Element/Function
Operation/Condition
Q352A,B MUTE DRV
PRE-OUT muting
Q600 BU DET
B-U ON/OFF detection
Q601 Acc DET
Acc ON/OFF detection
Q602 P-ANT SW
Q603 P-ANT SW
Q604 P-CON SW
Q605 P-CON PROTECT
Q606 P-CON PROTECT
Q607 P-CON SW
Q608 DIMMER SW
Q609 EXT AMPCON SW
Q611,612 PNL5V AVR
5V panel power supply
Q613,614 BU5V AVR
5V uCOM power supply
Q615,616 DD-CONV SW
Q617,618 DD-CONV AVR
DC/DC converter power supply
Q619,620 SURVO7.5V AVR 7.5V CD mechanism power supply
Q621,622 AUDIO8V AVR
8V Audio power supply
Q623 14V SW
8V Audio, 5 V DSP,
7.5 V SERVO
Q624 14V SW
8V Audio, 5 V DSP,
7.5 V SERVO
Q632,633
AUDIO DC/DC
11V Audio DC/DC CONV
11V AVR
power supply
Q801-803 AUDIO -9V SW
Q804,805 AUDIO 9V SW
Q806 AUDIO 9V SW
Q900 LED SW
LED SW for SRC and KENWOOD logos
Q930,931 PNL5V SW
5V Panel SW for SA-BPF and
REMOTE-CON
Q960 BK SW
Q961,962 VFD SW