KENWOOD KDC-719 Service Manual

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Service Manual for KENWOOD KDC-719, downloadable as a PDF file.

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background image
© 2002-3 PRINTED IN JAPAN
B51-7928-00 (N) 3382
CD RECEIVER
KDC-719/X559/Z737,Z638
SERVICE MANUAL
·This service manual does not include information on the CD mechanism assembly (exploded view, parts list,
schematic diagram or mechanism operation description).
For such information, please refer to the CD mechanism assembly service manual (X92-4450-0X: B51-7889-00).
Front glass
(B10-4209-01)
Panel assy
(A64-2646-11)
KDC-719
Front glass
(B10-4213-01)
Panel assy
(A64-2650-11)
KDC-X559
Front glass
(B10-4211-01)
Panel assy
(A64-2648-11)
KDC-Z737
Front glass
(B10-4210-01)
Panel assy
(A64-2647-11)
Z638
Screw set
(N99-1723-05)
: except Z638
Screw set
(N99-1656-05)
Lever
(D10-4674-04)x2
Mounting
hardware assy
(J21-9823-03)
Plastic
cabinet assy
(A02-2712-13)
Remote controller assy
(A70-2026-05)
: KDC-Z737,Z638
Remote controller assy
(A70-2025-05)
: KDC-719/X559
Escutcheon
(B07-3050-02)
: KDC-719/Z737,Z638
(B07-3057-02)
: KDC-X559
DC cord
(E30-6062-05)
: KDC-X559/Z737
DC cord
(E30-6106-05)
: KDC-719
DC cord
(E30-6063-05)
: Z638
Antenna adaptor
(T90-0523/0534/0552-05): Z638
background image
© 2002-3 PRINTED IN JAPAN
B51-7928-00 (N) 3382
CD RECEIVER
KDC-719/X559/Z737,Z638
SERVICE MANUAL
·This service manual does not include information on the CD mechanism assembly (exploded view, parts list,
schematic diagram or mechanism operation description).
For such information, please refer to the CD mechanism assembly service manual (X92-4450-0X: B51-7889-00).
Front glass
(B10-4209-01)
Panel assy
(A64-2646-11)
KDC-719
Front glass
(B10-4213-01)
Panel assy
(A64-2650-11)
KDC-X559
Front glass
(B10-4211-01)
Panel assy
(A64-2648-11)
KDC-Z737
Front glass
(B10-4210-01)
Panel assy
(A64-2647-11)
Z638
Screw set
(N99-1723-05)
: except Z638
Screw set
(N99-1656-05)
Lever
(D10-4674-04)x2
Mounting
hardware assy
(J21-9823-03)
Plastic
cabinet assy
(A02-2712-13)
Remote controller assy
(A70-2026-05)
: KDC-Z737,Z638
Remote controller assy
(A70-2025-05)
: KDC-719/X559
Escutcheon
(B07-3050-02)
: KDC-719/Z737,Z638
(B07-3057-02)
: KDC-X559
DC cord
(E30-6062-05)
: KDC-X559/Z737
DC cord
(E30-6106-05)
: KDC-719
DC cord
(E30-6063-05)
: Z638
Antenna adaptor
(T90-0523/0534/0552-05): Z638
background image
KDC-719/X559
/Z737,Z638
2
BLOCK
DIA
GRAM
CH
F/E
FM+B
PLL+B
AM+B
BUFF
E-VOL
DECODER
RDS
ISO
AMP
OEM
EJECT LED
DSI
DISP
4.5V PRE
DC/DC
2WAY MUTE
ACC DET
DIMMER
TEL-MUTE
ACC
DIMMER
POWER IC
PRE AMP
PRE OUT
SP OUT
MUTE
DRIVER
NOISE
BUFFER
ANT-CON
ANT-CON
P-CON
P-CON
IF+B
CD
MECHA
AUX
SW
OP AMP
E'S
SPEANA
AGC OP AMP
MUTE
4.5V
BU DET
BACK UP
EX AMP CONT
EX AMP CONT
NAVI MUTE
RESET
DET
PANEL
KEY ILL
MATRIX
KEY
FL
SW
MI-COM
PANEL
SPEANA
BPF
REMO
RESET
REG
SW
BUFFER
3.3V
SW
SERVO
AVR
BOX
DC/DC
A8V
SW14V
DC/DC
REG
BU5V
SW5V
PANEL5V
Q43,44
Q45,46
Q52
IC14
IC1
IC2
Q36
IC8,Q34
IC5
Q37-42
IC10-12
IC4
Q32,
IC7
33,35
Q15
Q31
Q30
Q14
Q111,112
Q26-29
Q3
Q9
IC3,Q4-6
IC6,Q16-23
Q1
A1
Q10-13
Q7,8
Q201,473-476
IC16
305,306
IC1
IC5
IC2
ED1
Q1,2
Q7-10
IC3
IC4
IC20
IC21
EEP ROM
IC25
Q101,
P-CON
ANT-CON
Z638 ONLY
EXCEPT KDC-X559/Z737
KDC-X559/Z737 ONLY
Z638 ONLY
Q3
EXCEPT KDC-719
Z638
ONLY
Z638 ONLY
Z638
EXCEPT
EXCEPT KDC-X559
EXCEPT KDC-X559
KDC-X559 ONLY
KDC-X559 ONLY
MI-COM
SDA
SCL
S-METER
SW5V
RDCK
FM
AM
SW5V
AUDIO OUT
BACK UP
DATA H
DATA C
MUTE
CH
SD
A
RDDA
BU5V
BU5V
DSI
EJECT
G
EJECT
R/G
Z638 (E)
CD/MD
FM
AM
1512mV
866mV
3795mV
BU5V
PRE MUTE
PMUTE
PSTBY
MUTE
BEEP
AUX SW
CD-AUX
E-VOL OUT LEVEL
A8V
IFC OUT
SW5V
A8V
SCL
QUAL
AFS
SERVO
BU5V
Rch
Lch
A8V
A8V
A8V
REQ H
RST
REQ C
CH CON
CLK
A8V
A8V
+B
-B
BACK UP
BU5V
BU5V
MC
REQ
SC
CON
FL+B
RED
SI2
SI1
CLK
GREEN
KS1-KS4
KR1-KR5
F01-F06
WAVE
P5V
MC
CLK
SC
REQ
P
RST
MC
D
A
T
A
GCP
LA
T
P5V
REMO
FL+B
FAC
BK
P5V
A8V
+B
-B
SERVO
FAC
FL+B
MI-COM
SW5V
MI-COM
BU5V
P5V
MI-COM
REMO
O-DATA
O-CE
O-CLK
1.8V PRE
613mV
274mV
2005mV
3795mV
1.8V PRE
896mV
1695mV
KDC-719 (K)
4.5V PRE
AUX
CHANGER
4.5V PRE
1.8V PRE
3795mV
1512mV
866mV
896mV
274mV
1695mV
2005mV
613mV
3795mV
1.8V PRE
QU
A
L
E'S OUT LEVEL
PRE OUT LEVEL
M RST
SW1
SW2
SW4
SW3
LO/EJ
M STOP
M SW
MUTE R
MUTE L
KDC-X559 (K)
KDC-Z737 (M)
KDC-X559 (K)
KDC-Z737 (M)
Z638 (E)
CHANGER
FM
AM
CD/MD
AUX
KDC-719 (K)
KDC-X559 (K)
KDC-Z737 (M)
Z638 (E)
AM
FM
CHANGER
AUX
CD/MD
2361mV
722mV
4.5V PRE
4469mV
848mV
1.8V PRE
1481mV
3717mV
600mV
1964mV
3717mV
1.8V PRE
KDC-719 (K)
251mV (E,M)TYPE
470mV (K)TYPE
215mV
1200mV
1200mV
background image
KDC-719/X559
/Z737,Z638
3
COMPONENTS DESCRIPTION
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
TAR5S33
FL AVR
+3.3V Output
IC2
TC74HC4050AFT
Buffer
For FL control lines, 5V
3.3V logic level shifting
IC3
RS-171
Remote sensor IC
IC4
BA3830F
BPF IC
BPF for the spectrum analyser indicator
IC5
UPD703032GFA04
Panel MI-COM.
Q1
DTA144EUA or UN5113
FL+B SW
FL & Illumination +B ON/OFF control. When Q2's base goes Hi, Q1 is turned on,
Q2
DTC114YUA or UN5214
and FL+B (45V) line is supplied to FL indicator and the key illumination circuit.
Q3
DTA114EUA or UN5111
REMO SW
When a base goes Lo, Q3 is turned on, and PAN5V line is supplied to
IC3 and IC4.
Q4
DTC114EUA or UN5211
FL blanking SW
When a base goes Hi, Q4 is turned on, and FL indicator is lit.
Q6
DTC114YK or UN2214
SRC key illumination SW
When a base goes Hi, Q6 is turned on, and SRC illumination is lit.
Q7
2SC4081
V-I conver ter
Current driver for green LEDs
Q8
2SC4081
V-I conver ter
Current driver for red LEDs
Q9
DTA114EUA or UN5111
Key illumination Red SW
When a base goes Lo, Q9 is turned on, and key illumination Red is lit.
Q10
DTA114EUA or UN5111
Key illumination Green SW
When a base goes Lo, Q10 is turned on, and key illumination Green is lit.
ELECTRIC UNIT (X25-924x-xx)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC1
UPD703033GFA18
System MI-COM.
IC2
TDA7407
E-VOL.& N.C. MPX
IC3
M5237ML
AVR IC
IC is combined with Q4, and it works as the error detection, the Q4's driver.
IC4
TDA7560
Power IC
IC5
TDA7401
High pass filter & Non-Fader
HPF (Front/Rear output), LPF, Non-Fader switching and volume function
volume
IC6
ICL7660SIBA
DC/DC converter
-9V AVR for pre-output amplifier
IC7
TC74HC02AF
Mute logic
2-input NOR x 4
IC8
NJM4565M-TE2
Op. amp.
Amplifier for the spectrum analyser and generation of Vref. (1/2Vcc) voltage
IC10
NJM4565M-TE2
Op. amp.
Amplifier for the front pre-outputs
IC11
NJM4565M-TE2
Op. amp.
Amplifier for the non-fader pre-outputs
IC12
NJM4565M-TE2
Op. amp.
Amplifier for the rear pre-outputs
IC14
TDA7479D
RDS decoder
IC16
S-80837ANNP
Reset IC
When BU 5V voltage is less than 3.7V, IC outputs Lo.
IC20
BA3121F
Isolation amplifier
AUX inputs isolation amplifier
IC21
BA3129F
Switched op.amp.
Input switching with AUX inputs and CD inputs
IC25
BR24C02F-W
EEPROM
Q1
2SD2375
CD servo AVR
AVR for CD mechanism servo operation, +7.5V output.
Q3
2SA1037K
SW 5V
While a base goes Lo, SW 5V is supplied to the microprocessor
peripheral circuits.
Q4
2SA2057
A.+8V AVR
Q4 is combined with IC3, and it works as the power supply of +8.0V output.
Q5
DTC144EUA or UN5213
A.+8V AVR SW
When Q5's base goes Hi, Q6 is turned on, and A.+8V AVR is working.
Q6
DTA124EUA or UN5112
Q7
DTA124EUA or UN5112
SW14V
When Q8's base goes Hi, Q7 is turned on, and A.+8V AVR, CD servo
Q8
DTC124EUA or UN5212
AVR and A+10V AVR are working.
Q9
2SB1427
PAN5V SW
For PAN5V on/off switching. When a base goes Lo with panel attached
to the set, Q9 is turned on, and PAN5V is supplied to the panel.
Q10
2SA2057
FL/Illumination AVR
When Q11's base goes Hi, AVR outputs +9V.
Q11
2SC4081
SWITCH UNIT (X16-168x-xx)
background image
KDC-719/X559
/Z737,Z638
4
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
Q12
DTC124EUA or UN5212
FL/Illumination AVR SW
When Q12' base goes Hi, Q13 is turned on, and FL/Illumination AVR is working.
Q13
DTA124EUA or UN5112
Q14
DTA123JK or KRA105S
EXT. AMP CON. SW
When a base goes Lo, Q14 is turned on, and control pulse signal is outputted.
Q15
DTC144EUA or UN5213
Dimmer detection SW
When vehicle small lamps turn on, Q15's base goes Hi, and it is turned on .
Q16
2SB1443
A.+10V AVR
When Q17's base goes Hi, AVR outputs +10V.
Q17
2SC4081
Q18
2SA1576A
Q18 and Q20 work as a differential amplifier, Q19 works as a driver, and
Q19
2SC4081
PRE-AMP -9V AVR
-9.3V is supplied to OP AMP.
Q20
2SA1576A
Q21
2SC4081
Q21and Q22 work as a differential amplifier, Q23 works as a driver, and
Q22
2SC4081
PRE-AMP +9V AVR
+9.7V is supplied to OP AMP.
Q23
2SA1576A
Q26
2SB1277(Q,R)
P-CON SW
When Q29's base goes Hi, Q26 is turned on, and P-CON signal is outputted.
Q29
DTC114YUA or UN5214
Works during POWER ON mode.
Q27
2SA1576A
P-CON. protection SW
Protect Q26 by turning ON when P-CON output is grounded.
Q28
DTA124EUA or UN5112
P-CON. protection inhibit SW
Prevents Q27 tuning ON during start-up after power ON.
While BACKUP is applied, a base goes Hi, and Q30 is turned on.
Q30
2SC4081
BU detection SW
When momentary power down has detected, a base goes Lo, and Q30
is turned off.
Q31
2SC4081
ACC detection SW
While ACC is applied, a base goes Hi, and Q31 is turned on.
Q32
DTA124EUA or UN5112
Mute driver for R Ch.
When BU detection SW or System RESET or MI-COM.'s MUTE is
Q33
DTA124EUA or UN5112
Mute driver for L Ch.
working, a base goes Lo, and Q32 and Q33 are turned on.
Q34
2SC4081
AGC for spectrum analyser
Q35
DTC124EUA or UN5212
E. VOL. mute SW
When BU detection SW or MI-COM.'s mute is working, a base goes Hi,
and Q35 is turned on.
Q36
DTC143TUA or UN5216
Noise buffer
Q37
DTC143TUA or UN5216
Audio mute SW (Front L)
When Q37's base goes Hi, Pre-output is muting.
Q38
DTC143TUA or UN5216
Audio mute SW (Front R)
When Q38's base goes Hi, Pre-output is muting.
Q39
DTC143TUA or UN5216
Audio mute SW (Non Fader R) When Q39's base goes Hi, Pre-output is muting.
Q40
DTC143TUA or UN5216
Audio mute SW (Non Fader L)
When Q40's base goes Hi, Pre-output is muting.
Q41
DTC143TUA or UN5216
Audio mute SW (Rear L)
When Q41's base goes Hi, Pre-output is muting.
Q42
DTC143TUA or UN5216
Audio mute SW (Rear R)
When Q42's base goes Hi, Pre-output is muting.
Q43
DTC124EUA or UN5212
FM+B SW
When Q43's base goes Hi, Q44 is turned on, and A.+8V is supplied to
Q44
CPH3105
the F/E. Works during FM reception mode or RDS reception mode.
Q45
DTC124EUA or UN5212
AM+B SW
When Q45's base goes Hi, Q46 is turned on, and A.+8V is supplied to
Q46
CPH3105
the F/E. Works during AM reception mode.
Q52
DTC143TUA or UN5216
Composite signal buffer
Q101 DTA114YUA or UN5114
DSI LED SW
When a base goes Lo, Q101 is turned on, and DSI illumination LED is lit.
Q103 DTC124EUA or UN5212
AUX/CD selector SW
When a base goes Hi, AUX inputs are selected.
When a base goes Lo, CD inputs are selected.
Q111 2SB1277(Q,R)
P-ANT SW
When Q112's base goes Hi, Q111 is turned on, and P-ANT signal is outputted.
Q112 DTC114YUA or UN5214
Works during FM/AM reception mode or RDS reception mode.
Q201 2SC4081
BU5V discharge SW
When BU OFF is detected, Q201 is turned on during the base Hi condition.
Q305 DTA114YUA or UN5114
EJECT LED Red SW
When a base goes Lo, Q305 is turned on, and EJECT illumination LED is lit.
Q306 DTA114YUA or UN5114
EJECT LED Green SW
When a base goes Lo, Q306 is turned on, and EJECT illumination LED is lit.
Q473 2SC4081
BU 5V AVR
While BACKUP is applied, AVR outputs +5V.
Q474 2SB1548(P)
Q473 and Q474 are inverted Darlington connection.
Q475 2SC4081
Voltage conver ter
Q475 and Q476 work as voltage coverter for BU 5V AVR, and it output +9V.
Q476 2SB1548(P)
COMPONENTS DESCRIPTION
background image
KDC-719/X559
/Z737,Z638
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Description
Processing Operation
1
SC DATA
I/O
Data input/output with the system MI-COM.
2
MC CLK
I
Clock input from the system MI-COM.
3
NC
O
Not used (N.C.)
4
DATA 1
O
Data output 1 to the FL driver IC
5
CLK
O
Clock output to the FL driver IC
(Data shift by the rise edge of the pulse)
6
NC
O
Not used (N.C.)
7
DATA 2
O
Data output 2 to the FL driver IC
8
CLK IN
I
Clock input from the FL driver IC
(Data shift by the rise edge of the pulse)
9
EVDD
-
Positive power supply connection terminal
Connected to P5V lines.
10
EVSS
-
Ground connection terminal
Connected to GND lines.
11
RED LED
O
Illumination red ON/OFF output in case of two colours
Lo: ON, Hi: OFF
/Illumination ON/OFF output in case of one colour
Illumination green ON/OFF output in case of two
Lo: ON, Hi: OFF in case of two colours
12
GREEN LED
O
colours
/Not used (N.C.) in case of one colour
/Not used in case of one colour
13
REMO
I
Data input from the remote control light sensor
14
LATCH
O
Latch output to the FL driver IC
Lo: Latch, Hi: Through
15
GCP
O
Control pulse output to the FL brightness
16
REMO ON
I/O
Power supply ON/OFF output to the remote control
Lo: ON, Hi-Z: OFF
light sensor IC and BPF IC
17-19 NC
O
Not used (N.C.)
20
BLK
O
Display ON/OFF control output
Lo: Display OFF, Hi: Display ON
21
TEST
I
Test terminal
Not used (Connected to GND lines)
22-33 NC
O
Not used (N.C.)
34
RESET
I
Reset terminal
Lo: Reset, Hi: Reset release
35
XT1
-
Sub clock resonator connection terminal
Not used (Pull down to GND lines)
36
XT2
-
Sub clock resonator connection terminal
Not used (N.C.)
37
REGC
-
Capacitor connection terminal for regulator inside
microprocessor
38
X2
-
Main clock resonator connection terminal
39
X1
-
Main clock resonator connection terminal
40
VSS
-
Ground connection terminal
Connected to GND lines.
41
VDD
-
Positive power supply connection terminal
Connected to P5V lines.
42-47 NC
O
Not used (N.C.)
48
FL +3.3V
O
FL VDD ON/OFF output
Lo: OFF, Hi: ON
49
FL+B
I/O
FL+B ON/OFF output
Hi-Z: OFF, Hi: ON
50-55 NC
O
Not used (N.C.)
56
BLUE LED
I/O
Source key LED ON/OFF output
Hi-Z: OFF, Hi: ON
57
NC
O
Not used (N.C.)
58
BVDD
-
Positive power supply connection terminal
Connected to P5V lines.
59
BVSS
-
Ground connection terminal
Connected to GND lines.
60-71 NC
O
Not used (N.C.)
IC5 (SWITCH UNIT: X16-168x-xx)

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