PREOUT
TEXT
COMPACT
DIGITAL AUDIO
D.REP
RDM
P.M/M.RDM
READY
SIRIUS
AUTO
SCN
NF
50Wx4
SRC
DAB
1/5
2/6
3/7
4/8
MENU
AUD
OFF
ANG
SCRL
KDC-X759
REP
TEXT
COMPACT
DIGITAL AUDIO
D.REP
RDM
P.M/M. RDM
READY
SIRIUS
AUTO
SCN
NF
50Wx4
SRC
DAB
1/5
2/6
3/7
4/8
MENU
AUD
OFF
ANG
SCRL
KDC-MP919
PREOUT
REP
F.SEL
TEXT
COMPACT
DIGITAL AUDIO
PTY/D.REP
RDM
P.M/M. RDM
TI
SCN
NF
50Wx4
SRC
DAB
1/5
2/6
3/7
4/8
MENU
AUD
OFF
ANG
SCRL
KDC-XXXXXX
PREOUT
REP
F.SEL
GSM
KDC-9020R/MP919
/PSW9521/X759
CD RECEIVER
SERVICE MANUAL
C
2002-2 PRINTED IN KOREA
B51-7900-00(K) 3409
The CD mechanism information is not in this service manual.
Please, refer to service manual. KDC-9020R/PSW9521 : X92-4470-0x(B51-7899-00)
KDC-MP919
: X92-4460-00(B51-7891-00)
KDC-X759
: X92-4450-00(B51-7889-00)
Panel assy
(A64-2568-02)
KDC-X759
Panel assy
KDC-9020R:
(A64-2570-02)
KDC-PSW9521:
(A64-2586-02)
Panel assy
(A64-2569-02)
KDC-MP919
KDC-9020R
KDC-PSW9521
Escutcheon assy
(B07-3007-03)
Escutcheon assy
(B07-3007-03)
Escutcheon assy
(B07-3007-03)
1
DC cord
(E30-)
DC cord
(E30-)
Plastic cabinet assy
(A02-1497-13)
Remote con.assy
(A70-)
Antenna adaptor
(T90-0523-05)
Escutcheon
(B07-3010-02)
Mounting hardware assy
(J21-9716-03)
Lever
(D10-4562-04)
Bracket (L)
(J19-5051-03)
Torsion coil spring
(G01-2924-04)
Screw set
(N99-1722-05)
Screw set
(N99-1704-05)
Remote con.assy
(A70-0886-15)
Bracket (R)
(J19-5052-03)
Depends on model. Refer to the parts list.
ILL
TEL MUTE
ACC
ANT CON
P CON
BACK UP
EXT AMP CONT
PLL+B
BUFFER
DECODER
RDS
E-VOL
MPX
N.C.
IF+B
SYSTEM u-COM
RESET
SW
A8V
SW14V
EXT AMP CONT
DIMMER
ACC DET
TEL MUTE
P CON
B.U DET
ANT CON
SW5V
B.U. 5V
PAN5V
MASK
MECHA
POWER IC
THERMO
PROTECT
IC4
MUTE
PRE AMP
4.5V
IC11-13
SP OUT
PRE OUT
RESET
AM+B
FM+B
NOISE
BUFFER
SPEANA
AGC OP AMP
SYSTEM
E'S+
MUTE DRIVER
IC9
4.5V
SERVO
AVR
DC/DC
4.5V PRE
IC15
DRIVER
MASK
REMO
O-CE
O-CLK
O-DATA
STEERING REMOTE
EXTERNAL DISPLAY
DC/DC
REG
CD4.7V
DC/DC
IC7
MATRIX
KEY
REMO
FL3.3V SW
VFD (GRADATED)
SPEANA
BPF
G/R SW
PANEL
u-COM
FL+B SW
VFD (GRADATED)
MATRIX
KEY
RESET
SW
FL3.3V SW
REMO
ROM
FL+B SW
PANEL
u-COM
SPEANA
BPF
G/R SW
IC10
IC14
IC2
CONTROL
1.8V
PRE OUT
PRE OUT OUTPUT VOLTAGE
IC1
IC5
IC8
251mV (E) TYPE
470mV (K) TYPE
FM:
AM:
230mV
F/E
CD
CH
(X16-160)
FL (2 COLOR) TYPE
(X16-161)
FL (GRADATED) TYPE
(X16-158)
(X16-159)
AUDIO
S-METER
IFC OUT
PLL DATA
PLL CLK
SW5V
FM
AM
CD
CHANGER
S METER
QUAL
SDA
SCK
S MUTE
A 8V
MASK
SW1
RCLK
QUAL
RDATA
NOISE
S METER
AFS
IFC OUT
PLL DATA
PLL CLK
SW1
M RST
LO/EJ
MO SW
MUTE R
MUTE L
M STOP
SW3
DATA C
CH RST
CH MUTE
SW2
DATA H
CH CON
CH CLK
REQ H
REQ C
MASK
DET
RESET
AM+B
FM+B
SCK
SDA
PRE MUTE
MUTE
BEEP
P MUTE
ACC DET
PHONE
DIMMER
EXT AMP CONT
P CON
PAN5V
P ON
ANT CONT
B.U. DET
SW5V
SW5V
CH MUTE
CH RST
DATA H
DATA C
CH CON
REQ C
CH CLK
REQ H
BACK UP
1200mV
CD4.7V
SERVO +B
A8V
PAN5V
B.U. 5V
SW5V
MUTE
AC
GND
BACK UP
SW5V
B.U.5V
+B
FM
4500mV
CD
AM
750mV
2250mV
1069mV
1715mV
(K) TYPE (E) TYPE
4500mV
B.U. 5V
SW5V
SCK
SDA
B.U. 5V
-B
SERVO+B
+B
-B
MASK
SW2
MASK
SW3
O-CE
REMO
O
-D
ATA
O-CLK
MASK
+
MASK
-
CD-MECHA+B
ILL
ON
CD4.7V
PANEL 5V
PANEL 5V
VDD1
VDD2
FAC
PANEL 5V
PANEL 5V
VDD1
VDD2
FAC
AFS
MS CLK
MS DATA
M STOP
M RST
MUTE L
MUTE R
MO SW
LO/EJ
SW1
SW2
SW3
A8V
B.U. 5V
(MP3. WMA)
CH
3600mV
1372mV
855mV
(E) TYPE
4.5V PRE
1.8V PRE
MODE
4500mV
4500mV
3600mV
1200mV
KDC-9020R/MP919/PSW9521/X759
2
BLOCK
DIAGRAM
KDC-9020R/MP919/PSW9521/X759
3
COMPONENT DESCRIPTION
Element
Purpose & Function
Operation, Condition, Compatibility
IC1
System uCOM
IC2
E.Vol & N.C. MPX
IC3
Power Supply IC
Error detection in combination with Q8. Audio 8 V AVR drive.
IC4
POWER IC
50Wx4ch
IC5
HPF & LPF & NON-FAD SW
IC6
CD mechanism 4.7 V power SW-Reg.
IC7
4.5 V PRE-OUT DC/DC
IC8
RESET IC
"L" when Mask uCOM detection voltage is 3.7 V or less or
when Flash uCOM detection voltage is 4.2 V or less.
IC9
Muting logic IC
4 inputs. NOR gate x 4.
IC10
Spectrum analyzer opamp
IC11
4.5 V PRE-OUT opamp
Front output.
IC12
4.5 V PRE-OUT opamp
Rear output
IC13
4.5 V PRE-OUT opamp
Non-Fad. output
IC14
RDS decoder
IC15
Motor Dr. IC
For storage mechanism
IC16
E2PROM
Q1,2
BU 5V AVR
Darlington connected.
Q3
SW 5V
ON when the base is "L".
Q4,5
SW 14V
Turns Q7 ON when the base of Q5 is "H".
Q6,7
AUDIO 8V AVR ON/OFF SW
8 V ON/OFF SW. Q7 turns ON when the base of Q6 is "H".
Q8
AUDIO 8V AVR
Q9
Servo power AVR
Q10
CD 4.7V SW-Reg ON/OFF SW
CD 4.7 V SW-Reg ON/OFF SW. ON when the base is "H".
Q11,12
FL & ILLUM AVR ON/OFF SW
FL & ILLUM AVR ON/OFF SW.
Q12 turns ON when the base of Q11 is "H".
Q13,14
FL & ILLUM AVR ON/OFF SW
Q15,16
4.5 V PRE-OUT DC/DC converter AVR
Darlington connected.
Q17~22
Regulated power supply Tr.
Q23,24
POWER-ANT SW
Q24 turns ON when the base of Q23 is "H".
Q25,28
POWER-CONT SW
Q25 turns ON when the base of Q28 is "H".
Upon detection of drop in the output voltage, these transistors turn
Q26,27
POWER-CONT circuit output protection
Q25 OFF to protect the output. This prevents malfunction of Q26 when
the POWER-CONT SW turns ON.
Q29
External amp control SW
Turns ON when a pulse is input to the base.
Q30
Dimmer control SW
Small In is detected when the base is "H".
Q31
B-U detection
"L" when B-U is present. "H" when B-U is absent or momentary power
down is detected."
Q32
Acc detection
"L" when Acc is present.
Q33
Lch MUTE Dr
L-ch audio muting SW drive. ON when the base is "L".
Q34
Rch MUTE Dr
R-ch audio muting SW drive. ON when the base is "L".
Q35
Spectrum analyzer AGC Tr.
Q36
E-Vol muting SW
When the base is "L", turns ON to mute E-Vol.
Q37
Noise buffer
Q38
AUDIO MUTE SW
Mutes the Front R CH hen the base is "H".
Q39
AUDIO MUTE SW
Mutes the Front L CH hen the base is "H".
Q40
AUDIO MUTE SW
Mutes the Rear R CH hen the base is "H".
Q41
AUDIO MUTE SW
Mutes the Rear L CH hen the base is "H".
Q42
AUDIO MUTE SW
Mutes the Non-FAD R CH hen the base is "H".
Q43
AUDIO MUTE SW
Mutes the Non-FAD L CH hen the base is "H".
Q45,46
FM+B SW
Q46 turns ON when the base of Q45 is "H".
Q47,48
AM+B SW
Q48 turns ON when the base of Q47 is "H".
Q49
Composite signal buffer
Q50
PANEL 5V SW
When the panel is attached, the base goes "L", turning the transistor
ON to supply 5 V to the panel.
ELECTRIC UNIT (X25-91xx-xx)
KDC-9020R/MP919/PSW9521/X759
4
COMPONENT DESCRIPTION
Element
Purpose & Function
Operation, Condition, Compatibility
IC1
PANEL u-com
IC2
SPECTRUM ANALYZER IC
IC3
REMOTE CONTROL IC
IC4
BUFFER IC
It is changed into 3.3V from 5V
IC5
3.3V REGULATER
The power supply of IC and UFD(Logic) which are driver by 3.3V
IC6
ROM
Q1
REMO ON SW
The power supply of IC2 and IC3 is turned on when the base level goes "L".
Q2
SC-CON SW
ON when the base level goes "H".
Q3,4
FL+B SW
FL+B(VDD2) is turned on when Q3's base level goes "H".
Q5
FL BLK SW
ON when the base level goes "H".
Q6,7
KEY ILLUMINATION SW
Lights green key-illumination when Q6's base level goes "H".
Lights red key -illumination when Q7's base level goes "H".
SWITCH UNIT (X16-15xx-xx)
KDC-9020R/MP919/PSW9521/X759
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin
Name
I/O
Processing Operation
1
DATA1
O
Data communication with FL driver.
2
CLK
O
Clock communication with FL driver (rise data shifting)
3NC
O
4
DATA2
O
Data communication with FL driver.
5
CLK IN
I
CS12 serial clock input (for synchronizing Data 1 and 2).
6
EVDD
-
PAN.5V
7
EVSS
-
GND
8
RED LED
O
ILLUM Red switching. "H": ON. "L": OFF.
9
GREEN LED
O
ILLUM Green switching. "H": ON. "L": OFF.
10
REMO
I
Input from Remote Control IC.
11
LATCH
O
Latch for FL driver.
12
GCP
O
Brightness graduation control.
13
REMO ON
I/O
Remote Control IC power ON/OFF. "HI-Z": OFF. "L": ON.
14-16
A13-15
O
ADDRESS
17
BLK
O
Display for FL driver. Blanking display. "L": Display OFF. "H": Display ON.
18
TEST
I
INTEMALLY CONNECTED
19-30
A1-12
O
ADDRESS
31
RESET
I
RESET
32
XT1
-
GND
33
XT2
O
34
REGC
-
Regulator capacitance connection
35
X2
-
MAIN CLOCK
36
X1
-
MAIN CLOCK
37
VSS
-
GND
38
VDD
-
PAN.5V
39-42
NC
O
43
OE
I/O
Output Enable. "L": Data sending. "Hi-Z": Standby.
44
CE
I/O
Chip Enable. "L": Data sending. "Hi-Z": Standby
45
FL+3.3V
O
FL+3.3V ON/OFF "H":ON "L":OFF
46
FL+B
I/O
FL+B ON/OFF "H":ON "HiZ":OFF
47-54
AD0-7
I
DATA for external ROM.
55
BVDD
-
PAN.5V
56
BVSS
-
GND
57-64
AD8-15
I
DATA for external ROM.
65-68
A16-19
O
ADDRESS
69
NC
O
70
A20
O
ADDRESS
71
AVDD
-
PAN.5V
72
AVSS
-
GND
73
AVREF
-
74
F01
I
BPF(63Hz)
75
F02
I
BPF(150Hz)
76
F03
I
BPF(330Hz)
77
F04
I
BPF(1kHz)
78
F05
I
BPF(3.3kHz)
79
F06
I
BPF(10kHz)
80
WAVE IN
I
Voice input.
81
KR3
I
KEY RETURN
82
KR2
I
KEY RETURN
83
KR1
I
KEY RETURN
84
VOL B
I
VOL input.
85
VOL A
I
VOL input.
86
SC REQ
O
Request communication with System Controller. "H": Requested.
87
NC(FAC IN)
O
(Flicker prevention circuit input)
PANEL MICROCOMPUTER UPD703033GC150 (X16)