CD CASSETTE DSP RECEIVER
DPX-6020
SERVICE MANUAL
©2001-7 PRINTED IN JAPAN
B51-7779-00 (N) 1741
Refer to the service manual D40-1132-05 (B51-7505-00)
for CASSETTE MECHANISM ASSY's information.
CD CASSETTE DSP RECEIVER
DIGITAL DIRECT
CD
EJECT
SRC
DSP
EQ
FNC
AUD
SBF
SCRL/B NR
SCN
RDM/BS
REP
M.RDM/MTL
D.SCN
1
2
3
4
5
6
DISP
ATT
COMPACT
DIGITAL AUDIO
TEXT
PWR
OFF
OFF
CRSC
VOLUME
NAME
ANGLE
RTN
DISC
EJECT
CASSETTE
DOLBY B NR
ANGLE
POSI
R.SIZE
DBB/SFC
SFC LEVEL
COMP
KBS
USER PRESET
Bracket assy
(J19-5121-04) : K
Escutcheon assy
(B07-3046-04)
Escutcheon assy
(B07-3047-04) : K
Screw set
(N99-1701-05) : M
(N99-1711-05) : K
DC cord
(E30-4886-05)
Remote controller assy
(A70-0900-05)
Panel assy
(A64-2427-21) : M
(A64-2468-21) : K
Knob (CDEJ)
(K24-3778-03)
Knob (CAEJ)
(K24-3779-03)
Knob (SRC)
(K24-3777-03)
Badge
(B43-1284-04)
Front glass
(B10-4088-11)
2
BLOCK
DIA
GRAM
SYSTEM u-COM
M30622MC-A65FP
VOL
BASS
INPUT
SEL
ISO
NC. MPX
PWR AMP
FRONT
SP OUT
REAR
SP OUT
MUTE
TDA7386
PRE OUT
FRONT
E VOL, TONE, NC, MPX
TDA7407
TRE
MD/CD
CHANGER
DSP
CXD2726Q
VFD
PANEL u-COM
CD PACK
MATRIX
VOL
SOFT
MUTE
M30805MG-214GP
AMP-CTRL
ANT CON
SUB
MOTOR
DRIVER
M
M
HA12216F
F/E
ANT.
PLAY
HEAD
MODE
PACK
DET
STBY
PACK
IN
TAKEUP REEL
SUPPLY REEL
REELT
REELS
RST SW
SMALL DET
ACC DET
BU DET
DSP3.3V
FM8V SW
AM8V SW
P CON
5V SW
A8V AVR
D5V AVR
SRV +B
AVR
DC/DC +B
SW
DC/DC
DRIVER
MOTOR
MAIN
E2PROM
S-24C01AFJA
REAR
PRE OUT
BUFF
LEVEL
MUTE
DOWN
&
BUFF
LPF
LPF
BUFF
LPF
BUFF
HPF
MUX
VOL
AMP
SW 14V
DSP3.3V
AVR
ILL +B
AVR
PANEL MOTOR
DRIVER
IC7
IC8
IC5
TDA7435
IC3
IC18
KEY
5V SW
REMOCON
3.3V AVR
IC15
IC1
IC2
IC12
AVR
IC1
IC2
ED2
IC4
IC5
IC17
SDA
SCL
RESET
FSD
FM SD
PWIC
SVR
PWIC
STBY
TEST
MUTE
FM DET OUT
DATA
FM SD
FSD
CLK
AM
ANT
FM
ANT
AUD +B
FM +B
AM +B
PON 5V
SW1-3
MRST
MOTOR
ANT CON
P CON
SMALL
ACC
B. U
GND
BU DET
ACC DET
SMALL
BU 5V
+6dB
(+2.4-3dB)
DSP 5V
BU 5V
AM
FM
FM +B
AM +B
MOTOR -
B. U
B.U
BU 5V
AUD +B
SDA
SCL
PON 5V
BEEP
DSP WRQ
DSP PD
DSP RST
-0.5dB
AUDIO OUT
AMP-CTRL
AMP-CTRL
MOTOR +B
CD SRV +B
DSP(A) 3.3V
AUDIO +B
BEEP
STBY
TEST
SVR
SCL
SDA
FRONT
REAR
TAPE
+15dB
ANT CON
BU 5V
SC-CON
SC DATA
RTS
AMUTE
LO/EJ
MSTOP
F-IN(L)
VREF(L)
R-IN(L)
F-IN(R)
R-IN(R)
SUB
MAIN
REV
Rch
Rch
FWD
Lch
REV
Lch
FWD
A
O
U
T
LB1641
AM
TAPE
FM
CD CH
SRV +B
BU 5V
AUD +B
MOTOR +B
DSP SO
DSP CLK
DSP WRDY
P ON
BU DET
ACC DET
SMALL
ANT CON
FM
P CON
ILLUMI
AM
FL PON
CTS
MC DATA
P
ACK
DET
MAIN
R
REEL
F
REEL
SUB-
SUB+
MODE
1-3
EQ-MUTE
MSC
MUSIC
FWD/REV
MTL
DOLBY
SW1-3
AMUTE
MSTOP
MRST
LO/EJ
MOTOR
+11dB
OTHER
2SB1188
2SB1188
PON 5V
BU 5V
REQH
CHCLK
D
ATA
C
REQC
D
ATA
H
CHCON
BU
2SB
AM DET OUT
REQ
CE
PLL REQ
PLL CE
PLL DATA
PLL CLK
PW MUTE
DSP PD
DSP WRQ
DSP RST
DSP CLK
DSP SO
DSP WRDY
-12.4dB
-0.5dB
9dB
9dB
9dB
TAPE +15dB
OTHER +11dB
SCL
SDA
P CON
P ON
P ON2
DSP(D) 3.3V
ILLUMI
ILL +B
MOTOR +
FRONT
REAR
REAR
or
N/F
AUD +B
2SB1188
2SB1188
L4943
UPC
BA5219
2SB123YK
2SB1548(P)
2SB1548(P)
2SB1448(Q,R)
VREF(R)
+B
FAC
ILL +B
SW 5V
SW 5V
PON 5V
+2dB
+0dB
+4dB
+4dB
:
:
:
:
REFCON
P-MODE
PM
DET
OPEN
SW
P-MODE
REFCON
PM
DET
OPEN
SW
LED LOGO
LED CD
CD PACK
LED TAPE
MOTOR +
MOTOR -
SWITCH UNIT
(X25-9100-20)
DOLBY UNIT
(X30-3000-00)
CASSET MECHA
CD MECHA
(X16-1400-20)
SUB PANEL UNIT
MECHA
PANEL
LED
DRIVER
300mV
160mV
400mV
1200mV
AM : 160mV
FM : 400mV
537mV
1687mV
1593mV
3193mV
59mV
100mV
169mV
319mV
1503mV
1592mV
507mV
3014mV
108mV
342mV
58mV
180mV
192mV
61mV
114mV
363mV
CD CH
TAPE
FM
AM
1511mV
475mV
798mV
254mV
:
:
:
:
TAPE
CD CH
AM
FM
:
:
:
:
CD CH
AM
FM
TAPE
:
:
:
:
TAPE
FM
AM
:
:
:
CD CH :
CD CH
TAPE
FM
AM
:
:
:
:
:
AM
CD CH
FM
TAPE
:
:
:
CD CH
AM
FM
TAPE
:
:
:
:
TAPE
FM
AM
:
:
:
283mV
475mV
151mV
CD CH : 900mV
1200mV
300mV
CD
TAPE
:
:
D
P
X
-6020
3
Synthesizer Unit (X14-6770-XX)
Ref.
Parts No.
Name
Function
IC1
M30622MC-A65FP
System
µ-COM
IC2
TDA7407
E-VOL, HPF, LPF, INV
VOL, LOUD, TONE, BAL, FAD, FM NC, MPX
IC3
L4943
Power Source IC
Digital : 5V, Audio : 8V, Tuner : 8V AVR, P-CON
IC5
TDA7435
System E'S
IC7
NJM4565MD
Buffer IC
IC8
CXD2726Q-1
DSP IC
IC9
NJM4565MD
LPF Filter
IC10
NJM4565MD
LPF Filter
IC11
NJM4565MD
LPF Filter
IC12
TDA7386
Power Amp
IC13
NJM4580MD
Buffer IC
IC14
PST9142NR
E2PROM
IC15
S-24C01AFJA
RESET IC
IC16
TC7W32FU
For MUTE
IC17
BA5219BFP-Y
Panel mechanism drive IC
IC18
UPC29L33T
3.3V Regulator
Q1
DTC144EUA
Surge detection
Surge detection voltage (18.2~18.9V) turns this component on.
Q2
2SC4081
BU voltage detection
B.U detection voltage (8.8~9.1V) turns this component on.
Q3
2SC2412K
ACC voltage detection
ACC detection voltage (8.2~8.5V) turns this component on.
Q5
DTC144EUA
ILLUMI detection
When small is turned on, this component is turned on.
Q6
DTA123JK
AMP CTRL SW
Q9
2SB1188(R)
ANT CON SW
When turned on, ANT CON is output.
Q10
2SC4081(S)
ANT CON SW
When turned on, Q9 is turned on.
Q11
2SC4081
P-CON Short DET
Q12
DTB123YK
P-ON 5V SW
When turned on, P-ON 5V is turned on.
Q13
DTC124EUA
P-ON 5V SW
When turned on, Q12 is turned on.
Q14
DTC114EUA
SERVO 7.5V SW
When turned on, Q15 is turned on.
Q15
DTA114EUA
SERVO 7.5V SW
When turned on, Q17 is turned on.
Q16
2SB1548(P)
SERVO 7.5V AVR
When turned on, 7.5V is output.
Q17
2SC4081
SERVO 7.5V AVR
When turned on, Q16 is turned on.
Q22
DTC124EUA
ILL+B SW
When turned on, Q23 is turned on.
Q23
DTA124EUA
ILL+B SW
When turned on, Q25 is turned on.
Q24
2SB1548(P)
ILL+B AVR
When turned on, ILLMI 10.5V AVR ON
Q25
2SC4081
ILL+B AVR
When turned on, Q24 is turned on.
Q26
DTC114EUA
SW14V SW
When turned on, Q27 is turned on.
Q27
DTA114EUA
SW14V SW
When turned on, Q29 is turned on.
Q28
2SB1416(Q,R)
SW14V AVR
When turned on, SW14V AVR ON
Q29
2SC4081(S)
SW14V AVR
When turned on, Q28 is turned on.
Q32
DTC124EK
AM+B SW
When turned on, Q33 is turned on.
Q33
CPH3105
AM+B SW
When turned on, AM +B is output.
Q34
DTC124EUA
FM+B SW
When turned on, Q35 is turned on.
Q35
CPH3105
FM+B SW
When turned on, FM +B is output.
COMPONENTS DESCRIPTION
DPX-6020
4
Ref.
Parts No.
Name
Function
Q36
DTC144EUA
Panel detection
Panel voltage detection
Q37
DTA144EUA
CH1
2 switching
When turned on, A8V is output.
Q38
DTC144EUA
CH1
2 switching
When turned on, Q37 is turned on.
Q41
2SD2114K
MUTE SW
When turned on, output of IC7 is muted.
Q42
2SD2114K
MUTE SW
When turned on, output of IC7 is muted.
Q44
DTC143TUA
PREOUT MUTE
When turned on, PREOUT MUTE (Rear Rch)
Q45
DTC143TUA
PREOUT MUTE
When turned on, PREOUT MUTE (Rear Lch)
Q46
DTC143TUA
PREOUT MUTE
When turned on,PREOUT MUTE (Front Rch)
Q47
DTC143TUA
PREOUT MUTE
When turned on,PREOUT MUTE (Front Lch)
Q48
DTC124EUA
PW IC MUTE
When turned on, PW IC MUTE
Q49
DTC144EK
PW IC protection
Q50
DTC114YUA
SVR Discharge SW
From STBY OFF, on within 5 seconds.
Q51
DTA124EUA
RESET detection SW
When turned on, Q52 is turned on.
Q52
DTC114YK
RESET detection SW
When turned on, RESET
Q53
FMC2A
Switch for LOGO LED
When turned on, LOGO LED lights up.
Q54
FMC2A
Switch for CD LED
When turned on, CD LED lights up.
Q55
FMC2A
Switch for TAPE LED
When turned on, TAPE LED lights up.
Q59
DTA114EUA
MUTE detection
When turned on, MUTE
Q60
DTC124EUA
MUTE detection
At MUTE detection, Q59 is turned on
COMPONENTS DESCRIPTION / MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin
Pin Name
I/O
Description
Processing Operation
1
DSP RVDT
O
DSP data output
2
DSP_CLK
O
DSP clock output
3
CHCON1
O
External CH1 selection
H: CH1, L: Others
4
CHCON2
O
External CH2 selection
H: CH2, L: Others
5
DATAH
O
External CH data output
6
DATAC
I
External CH data input
7
CHCLK
I/O
External CH clock input/output
8
BYTE
I
External data bus width switching
9
CNVss
I
Processor mode switching
10
DSP_REDY
I
DSP write request
11
DSP_RST
O
DSP Reset
12
Reset
I
Reset input
L: Reset
13
Xout
O
Main system clock output
14
Vss
I
Power input
15
Xin
I
Main system clock input
16
Vcc
I
Power input
17
NC
I
Not in use
18
SP INT
I
Spectrum analyzer reception permission
19
BU DET
I
B.U detection
H: Power down
DPX-6020
3
(X14-)IC1:System µ-com
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
(X14-)IC1:System µ-com
Pin
Pin Name
I/O
Description
Processing Operation
20
REQC
I
External CH reception request
21
REQH
O
External CH transmission request
H: On
22
PANT
O
Power antennal control
H: On
23
PCON
O
External amp power control
H: On
24
PON
O
Power control
H: On
25
LAMP
O
Lamp control
H: On
26
AMP_CTRL
O
External amp control
H: On
27
ACC DET
I
ACC detection
H: ACC off
28
BUZZ
O
Beep ouput
29
SCL
O
IC2 clock ouput
30
SDA
I/O
IC2 data input/output
31
PN MC DATA *
O
Panel
µ-com communication data output
32
PN SC DATA
I
Panel
µ-com communication data input
33
PN RTS
O
Panel
µ-com communication control
34
PN CTS
I
Panel
µ-com communication control
35
PMOT1
O
Panel motor control
36
PMOT2
O
Panel motor control
37
REFCON
O
A/D reference voltage output
38
PMDET
I
Panel mechanism detection
39
OPEN SW
I
Panel full-open detection
L: Panel full-open
40
PM VR
O
Panel mechanism voltage congrol
H: 5.1V, L: 7.2V
41
PN SCCON
O
Panel
µ-com communication control line
H: Panel Microcomputer stop
42
MUTE
O
MUTE
H: MUTE on
43
LED CD
O
LED CD display
H: On
44
LED TAPE
O
LED TAPE display
H: On
45
LED LOGO
O
LED LOGO display
H: On
46
SP_REQ
O
SPANA data output request to panel microcomputer
47
CD_SW3
I
CD mechanism SW3 detection
48
CD MOTOR
O
CD loading motor control
H: On
49
CD_LO/EJ
I/O
Loading/Eject control
L: Loading direction
H: Eject direction
50
CD_MSTOP
O
CD mecha controller stop
L: Stop
51
CD_MRST
O
CD mecha controller reset
L: Reset
52
CD_AMUTE
I
CD mute request
H: Mute request
53
CD_SW1
I
CD mecha SW1 detection
54
CD_SW2
I
CD mecha SW2 detection
55
TA DOLBY
O
Dolby selection SW
H: DOLBY on
56
TA MTL
O
Metal selection SW
H: Metal, L: Normal
57
TA_F/R
O
Play direction selection SW
H: RWD, L: FWD
58
TA MUSIC
I
Between-music detection input SW
L: Music
59
TP MSC
O
Casettee between-music selection SW
L: FF&REV
60
TA EQ MUTE
O
EQ music selection SW
H: MUTE on
DPX-6020