Kenwood KDC-CMP21V User manual

© 2004-3 PRINTED IN JAPAN
B53-0163-00 (N)428
CD AUTO CHANGER PLAYER
KDC-CMP21V
SERVICE MANUAL
Holder assy
(J19-5146-02)
Tray
(J99-0614-01)
Cord with plug
(E30-4291-05)
(E30-4711-05)
(E30-6358-05)
When transporting this model, always attach CAUTION CARD and STEPPED SCREW (for transportation).
The MECHANISM OPERATION is the same as model KDC-C660.
Please refer to the service manual of model KDC-C660 (B51-7105-00). Service jig W05-0635-00
Parts No.
For initial position setting
Bracket (R)
(J19-5019-03)
Bracket (L)
(J19-5018-03) Screw set
(N99-1645-15)
Cord with pinjack
(E30-6351-05)

KDC-CMP21V
2
BLOCK DIAGRAM
BU14V
5V AVR BU5V
BU3.3V
BU2.5V
SW
5V AVR
D5V (SW)
8V AVR
SW 5V REG (A)
SRV8V BU
DETECT
A5V
NJM2880U33 SW3.3V
TR SW5V
UPC2926T SW2.6V
SHIFT
LEVEL
CONTROL IC
MICROPROCESSOR
AUDIO DAC HD74LV157AT-EAUDIO MUTE
LIM SW
LIM SW
SW
RESET
EEP-ROM
L.P.S
ARM SW
EJ SW
MG SW
N/PAL SW
SERVO,DSP
DECODER
MP3/WMA
VCD
DECODER
VIDEO AMP
DRAM
FLASH ROM
DC MOTOR
DRIVER
BTL
TR COIL
SLED
FO COIL
ELEVATOR
LO-EJ
SPINDLE/
CBA
EF
PD
HOT
IC4 IC15
CQ RF,
MECHANISM
AUDIO
OUT
VIDEO
OUT
IC5
IC8
IC9
IC7
IC11
IC12 IC15
SYSTEM
IC1
IC2
Q90,91 IC14
NJM2890
M1
M2
M3
CHCLK
REQH
REQC
DATAH
DATAC
CHCON
CHRST
CHMUTE
N/PAL
PON
PON
PON
D5V (SW)
16MHz
PON
BU3.3V BU5V
A5V
A or B
PON
PON
BU3.3V
DATA SEL
12.5MHz
BU5V
GND
16.934MHz SW3.3V
BU3.3V BU2.5V
AB
SW5V SW2.6V
75 470u
SW5V
27MHz
XTAL
SRV8V
10
C16M BCLK,DATA,LRCK
CD PLAYER UNIT (X32-5650-00)
(X13- )
PICKUP ASSY
MECHANISM ASSY (X92-4950-00)
DPU1

KDC-CMP21V
3
●CD PLAYER UNIT (X32-5650-00)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 Reset IC System microprocessor reset control IC
IC2 System microprocessor Communication to head unit and control for mechanism control IC
IC3 EEPROM LPS data backup memory (for MD position)
IC4 Mechanism control IC Control for Mechanism assy, servo IC and MP3/WMA decoder
IC5 Video amp Video amp for composite video signal
IC6 AVR 2.6V (for IC7 VCC)
IC7 Video decoder Video CD decoder IC
IC8 DRAM For playback video data
IC9 Flash ROM Program memory forVCD decode
IC10 Selector Select for VCD line or MP3/WMA data line
IC11 Decoder MP3/WMA decoder IC
IC12 CD servo IC RF amplifier built in digital servo and data processor IC
IC13 AVR 5.0V (for audio and IC14 VDD)
IC14 Audio DAC Audio DA converter
IC15 Motor driver Focusing coil, tracking coil, spindle motor and sled motor driver
IC16 AVR 5.0V (for IC7 VDD)
IC17 AVR 3.3V, 2.5V (for BU), IC4, IC11 VDD
IC18 AVR 3.3v (for IC12 VDD)
Q1,2 SW AVR 8V control SW
Q3,6 SW AVR 6.2V control SW
Q5 Driver AVR 5V driver
Q7 SW Select for 8V and 7V voltage
Q8 Driver AVR 6.2V driver
Q11 Driver AVR 8V driver
Q12 BU det Backup line voltage detector
Q20 Parking det Parking SW detector
Q21 Reset SW Reset control SW (for system microprocessor)
Q22 SW Changer muting control
Q23 SW Changer control SW
Q24 SW AVR 5V control SW
Q25,26 Level shift Voltage level shift (5.0V→3.3V, 3.3V→5.0V)
Q27,28 Audio muting SW Q27 (for Lch), Q28 (for Rch)
Q40 SW System reset for IC4
Q52 SW System reset for IC7
Q70 Selector SW Selector IC control SW
Q71 VC SW Control for Q73
Q72 LD SW Control for APC
Q73 VC SW Eccentric disc SW (for sub beam F)
Q90~93 Audio muting SW Q90,93 (Rch), Q91,92 (Lch)
Q100 Vref selector Select for internal Verf or external Vref
COMPONENTS DESCRIPTION

KDC-CMP21V
4
●SYSTEM MICROPROCESSOR : 784214AGC-204 (X32: IC2)
Pin No. Pin Name I/O Description / Processing Operation
1 PON O Power control output terminal (L : AVR power ON)
2NCONC (open)
3/MSTOP O Mechanism stop signal output terminal (L : Mechanism stop, H :NORMAL)
4PARK SW I Parking SW detect input terminal (H : Monitor ON, L : Monitor OFF)
5NTSC/PAL I NTSC/PAL select terminal (H : PAL, L : NTSC)
6 RST O Servo IC reset signal output terminal (L : Reset)
7 /MUTEIN L I Lch muting signal input terminal (L : Muting ON)
8 /MUTEIN R I Rch muting signal input terminal (L : Muting ON)
9VDD - BU5V (for ADC)
10 X2 - X’tal 12.5MHz
11 X1 - X’tal 12.5MHz
12 VSS - GND
13,14 XT2,XT1 - NC
15 /RESET I Reset signal input terminal (L : Reset)
16 NC - NC
17 MGSW I Magazine in SW input terminal (H : Magazine pack in)
18 EJSW I Eject SW input terminal (H : Eject SW ON)
19 COMMSW I Select for OLD or NEW 5L line system control
20 NC - NC
21 CH-CON I Changer control for Head unit (H : System ON)
22 BUDET I Backup line voltage detect input terminal (H : Momentary power down)
23 AVDD - VDD for A/D converter (BU5V)
24 AVREF0 I Vref for A/D converter (Sys 5V)
25 HOT I Rise in temperature detect input terminal (Detect level : 4V (90°C))
26 LPS I Mechanical deck position detect input terminal
27 LOESW I Loading in SW input terminal (L : Loading complete)
28 NC - NC
29 TOFF I Tracking OFF mode detect terminal (H :Tracking OFF)
30 SRVSEL I Servo active mode terminal (No mechanism movement, H : Servo active mode)
31 SLNSA I SLED non-sensitive area ON/OFF terminal (L : Seld non-sensitive ON)
32 ADJSEL I Servo automatic adjustment ON/OFF terminal (L : Servo adjustment ON)
33 AVSS - GND
34,35 NC - NC
36 AVREF1 I Vref for A/D converter (BU 5V)
37~39 NC - NC
40 DATAH I Data input terminal (for Head unit)
41 DATAC O Data output terminal (for Changer unit)
42 HCLK I/O Communication clock (for Head unit)
43 REQC O Communication request to Head unit
44 CHMUTE O Audio muting signal to Head unit (L : Muting ON)
45 /MUTE L O Lch audio muting signal output terminal (L : Muting ON)
MICROCOMPUTER’STERMINAL DESCRIPTION

KDC-CMP21V
5
Pin No. Pin Name I/O Description / Processing Operation
46 /MUTE R O Rch audio muting signal output terminal (L : Muting ON)
47~71 NC - NC
72 VSS - VSS
73~75 NC - NC
76 ELVADJ I Mechanism deck position adjustment mode select terminal (L : Adjustment mode)
77~80 NC - NC
81 VDD - VDD (BU 5V)
82 NC - NC
83 REQH Communication request from Head unit
84 SP/LO+ O Spindle/Loading motor control terminal
85 SP/LO- O Spindle/Loading motor control terminal
86 ELV+ O Elevator motor control terminal
87 ELV- O Elevator motor control terminal
88,89 NC - NC
90,91 TEST1,TEST2 I Test mode terminal
92 8V/7V O Mechanism driver IC control terminal
93 EEPWR I EEPROM writing mode control terminal (H :Writing, L : NORMAL)
94 TEST/VPP I Flash ROM program mode control terminal
95 DATA I/O Serial data communication to mechanism control IC
96 /CLK I/O Serial clock communication to mechanism control IC
97 SDA I/O EEPROM data I/O terminal
98 SCL O EEPROM clock output terminal
99 NC - NC
100 ARMSW I ARM SW detector (H : Arm SW ON)
●MECHANISM CONTROL IC : 91CW12AFG-5DN4 (X32 : IC4)
Pin No. Pin Name I/O Description / Processing Operation
1VREFL I Reference V input terminal (for ADC)
2AVSS - GND (for ADC)
3AVCC - BU3.3V (for ADC)
4NCONC (open)
520RST O Reset control terminal (for decoder, L : RESET, H : NORMAL)
6 20ACK I Acknowledge signal input terminal (for decoder)
7 20STBY O Stand-by control terminal (for decoder, H : STAND BY, L : NORMAL)
8,9 NC O NC (open)
10 20INT I Interrupt signal input terminal (for decoder)
11 FOGUP I Focus gain interrupt input terminal (H : Fo gain UP, L : NORMAL)
12 LZM I 0bit MUTE detect (Lch) (L : MUTE OFF, H : MUTE ON)
13 RZM I 0bit MUTE detect (Rch) (L : MUTE OFF, H : MUTE ON)
14,15 NC O NC
16 20CS O Chip select signal output terminal (for decoder)
17 20LP O Latch pules signal output terminal (for decoder)
MICROCOMPUTER’STERMINAL DESCRIPTION

KDC-CMP21V
6
Pin No. Pin Name I/O Description / Processing Operation
18 20TXD0 I/O Serial data signal output terminal (for decoder)
19 20RXD0 I Serial data signal input terminal (for decoder)
20 20SCLK0 O Serial data clock output terminal (for decoder)
21 DSPTXD1 O Serial data signal output terminal (for DSP)
22 DSPRXD1 I Serial data signal input terminal (for DSP)
23 DSPSCLK1 O Serial data clock output terminal (for DSP)
24 AM0 I Select for ROM mode (H : NORMAL, L : External ROM mode)
25 DVCC - BU3.3V
26 X2 O X’tal 16MHz
27 DVSS - GND
28 X1 I X’tal 16MHz
29 AM1 I Fixed H
30 RESET I Reset input terminal (L : RESET, H : NORMAL)
31~34 NC O NC
35 DSPSTB O Data strobe signal output terminal (for DSP)
36 DSPA0 O Command, parameter select signal (for DSP) (H : Parameter, L : Command)
37 DSPRST O Reset control output terminal (for DSP)
38 DSPINT I Interrupt signal input terminal (for DSP) (H :Interrupt)
39 /DAC RESET O Reset signal output terminal (for DSP) (L : RESET, H : NORMAL)
40 SEARCH O Search condition output terminal (H : Search, L :NORMAL)
41 LOE/LIM_SW I SLT SW detect input terminal (H : Inside)
42~45 NC O NC
46 PONE5 O +5V power supply control (for video) (H :POWER ON)
47 PONE2.5 O +2.5V power supply control (for video) (H : POWER ON)
48~60 NC O NC
61 /DAC PD O DAC RESET (L : RESET, H : NORMAL)
62 DVSS - GND
63 NMI I Request for non maskable interrupt signal input terminal
64 DVCC - +VCC
65 DAC MUTE O DAC MUTE control terminal (H : MUTE, L : MUTE OFF)
66 DAC PON O Audio power supply (for DXM6550) (H : Power ON)
67 PONA5 O +5V Audio power supply (for DXM6550) (H : Power ON)
68 ESRST O Reset signal output terminal (for ES3890) (L :RESET, H : NORMAL)
69 VMUTE O VIDEO MUTE control terminal (H : MUTE, L :MUTE OFF)
70 NC O NC
71 SELINT O Video/Audio select output terminal (H : NORMAL, L : Interrupt)
72 ASEL0 O Audio signal output select terminal 0 (00 : STEREO, 01 : Lch)
73 ASEL1 O Audio signal output select terminal 0 (10 : Rch, 11 : Not function)
74 NT/PAL O NTSC/PAL selector (L : NTSC, H : PAL)
75 DATASEL O 20F/ES3890 output select (H : 20F, L : ES3890)
76,77 NC O NC
78 NC (BOOT) I Flash memory writing terminal (L :Writing, H : NORMAL)
MICROCOMPUTER’STERMINAL DESCRIPTION

KDC-CMP21V
7
Pin No. Pin Name I/O Description / Processing Operation
79,80 NC O NC
81 POND3.3 O D3.3V POWER ON control terminal (H : POWER ON)
82 MUTEL O Audio muting control terminal (Lch)
83 MUTER O Audio muting control terminal (Rch)
84 SDA I/O I2C data (for system microprocessor)
85 SCL I/O I2C clock(for system microprocessor)
86 MSTOP I Interrupt for stand-by condition (L :STOP, H : NORMAL)
87 NC O NC
88 DMUTE O Driver muting (L : MUTE ON, H : MUTE OFF)
89 DVCC - VDD
90 NC O NC
91 DVSS - GND
92~94 NC I NC
95 VCDSEL I Video CD operation control terminal
96 ASEL I Audio output polarity control terminal (H : Reversal output, L : Normal output)
97 CHSEL I Destination input terminal (H : Changer, L :Normal)
98 SEL0 I Destination input terminal (L,L : DXM-6540, L,H : DXM6550)
99 SEL1 I Destination input terminal (H,H : DXM6560)
100 VREFH I Reference voltage input terminal (for ADC : BU3.3V)
MICROCOMPUTER’STERMINAL DESCRIPTION
●L.P.S. initial position adjustment procedure
1. Connect the changer to the HEAD UNIT (H/U).
2. While holding the magazine eject button of the changer,
press the reset button of the H/U.
3. After about 3 seconds, release the magazine eject button.
4. Press the SRC button of the H/U to enter the CD-CH mode,
and the H/U's display section indicates “E-88”.
5. Move the mechanism deck to around the 1st stage by press-
ing the DISC- or DISC+ button.
6. Insert the adjustment tool (W05-0635-00) into the tool hole
on the changer mechanism.
7. Then press the DISC+ button to move the mechanism deck
until the mechanism’s slider hits the adjustment tool.
8. When the motor locks (stops), press the REPEAT key of
the H/U.
When the REPEAT key is pressed, the mechanism moves
automatically to the 1st stage and the initial position adjust-
ment completes. (The data is written in the EEPROM at
this time.)
W05-0635-00
ADJUSTMENT

KDC-CMP21V
8
ABCDE
1
2
3
4
5
6
7
PC BOARD (COMPONENT SIDE VIEW)
R135
R136
C106
R113 R112
R8
W57
CP3
R53
R35
R58
R78
R6
C9
W45 X1
W59
C24
C74
C75
R60
C68 C72
C70
R105
R114
R2
C4
R3
C5
C48
C61
C73 R106
C67
R104
C71
C69
R79
R80
R90
R101 CP20
C64
C47
R74
R81
R111
C105
R138
C50
C49
R75 R76
R77
R71
R88
C42
R130
X2
R97R149
CP41
CP21
CP40
C104
R82
CP1
R212
R200
C193
R211
R213
R30
R32 W26
W27
R37
R29
R31
R28
R215
R204
C194
C192
R202
R210
C190
R201
R208
C80
W43
R40
R42 R25
C21
R23
R205
C1
C79
R108
C163
C191
R207
R209 R203
R206
C139
R164
C167
C82
C77
X3
C78
C118
R139
R131
R132
R133
R134
X4
R141 R96
C116
CP43
CP22 R155
C168
C126
C138
C131 C128
C124
C125
R153
C55
C117
L3
R142 R170
CP45
C109
CP46
R143
R137
R140
C53
C134
C133
C127
R156
C135
R151
C145
C54
R91
R171
C142
C143
C144
38 1
19
20
20 1
23 1
100 7675
51
1
2526 50
34
15
16 1
17 64
493233 48
18
916
38
39
1
64
128103
65
102
1
100
25
51
75 76
2650
I
O
G76
75 100
2650
51 25
1
1
5
10
6
VR
GND
LD
PD
E
F
IOP1
IOP2
AGND
A+5V
BU+14V
R-CH
L-CH
AGND
GND
CH-CON
CH-MUTE
PARK
CH-RST
REQC REQH
CH-CLK
SRV+8V
SRVGND
ELV-
ELV+
SYS+5V
LPS
DGND
D+5V
SPDLO-
SPLO+
EJSW
SCK0
/MUTER
/MUTEL
NC
HOT
BUDET
/CHCON
RESET
COMSW
/MUTER
/MUTEL
TEST2
TEST1
EEPWR
TEST/Vpp
BUGND BU+5V
ELV-
ELV+
SYS+5V
SVDD
DGND
BEC BCE
MVDD
BU+5V BU+2.5V
DGND
BUGND
SWDGND
/BOOT
ATEST
HOLD
FCS- TRK+
TRK- FCS-
SP- SP+
SL- SL+
LOESW
MGND
PON
MCSW
NTSC/PAL
ELVADJ
D+2.6V
VDACSW
DATAH DATAC
LIMSW
ADCIN FE
SWD+3.3V
LOCK
MIRR
FLAG
ADJSEL
SLNSA
SRVSEL TOFF
VCC
TE
VOUT
8V/7V
ARMSW
SCL
SDA
SRV+8V
D+6.2V
BUGND
BU+3.3V
/RESET
FZD
TZD
RXD
TXD
RF
ARF
B
A
C+D
VC
GND
GND
EB
EB
EB
EB
EBEB
EB
D8
D23
D5 D4
Q11
Q52
Q7
Q8
D2
D3
Q5
CN1
D60
D22
D61
Q21
Q23
CN2
D40
Q71
D71
D70
IC2 IC7
IC17
IC6
IC4
IC10
IC11
IC15
IC12
IC18
CD PLAYER UNIT X32-5650-00 (J74-1644-11)
Refer to the schematic diagram for the values of resistors and capacitors.
X32-5650-00
Ref. No. Address
IC2 4B
IC4 5D
IC6 5D
IC7 4C
IC10 4D
IC11 4E
Ref. No. Address
IC12 3E
IC15 2B
IC17 5D
IC18 3E
Q5 6D
Q7 5B
Ref. No. Address
Q8 5D
Q11 5B
Q21 3B
Q23 3B
Q52 4B
Q71 3D

KDC-CMP21V
9
JIHGF
1
2
3
4
5
6
7
PC BOARD (FOIL SIDE VIEW)
R38
R103
C107
CP42
C40
C44
C100
C52
C41
C51
R87
C102
C101
C103
R5
CP7
R84
C43
R73
R92
C7
C12
C14
C46
C110
R110
C13
C6
C84
L1
R102
C85
R51
R47
R46
R4
R49
L2
C86
C65
C83
C62
C63
CP8
C3
CP4
CP9
C25
CP5
TH1
R36
C10
C11
C2
CP6
C26
R98
CP2
R56 R55
R216
R54
R166
C114
R169
C120
CP47
C111
CP44
C115
R147
R148
R146
C108
C129
C122
C140
C141
C136
R168 C164
C169
C165
CP48
C123
R144
R95
C119
R145 C112
C113
R154
R89
R152
C121
C130
R157
C132
R162
C137
R159
R165
C161
R185
C160
R183
R181
R158
R167
R86
R184
R182
R180
R48
R1
R107
R109
C60
C162
C166
R22
C22
R21
C23
R44
C20
R20
R7
C8
C27
R99
R69
R33
R34
R52
R24
R214
18
916
48
25 24
1
23
44
22
1
3
41
2
1
4
8
5
3
1
4
5
54
13
64
13
B
C81
C76
R100
C28
EC
ECBEBC
CEB
CEB EBC
EB
EB
EB
EB
SG
DS
BE BE BE
G
D
EB
EB
EB
EB
EB
EB
EB
EB
EBEB
EB
EB
Q27
Q28
S3
Q40
S2
Q6
Q25
Q26
Q70
Q3
Q24
Q1
Q17Q16Q15
Q2
S4
S1
Q72
Q73
Q91
D41
Q90
D6
Q20
D20
D7
D1
Q12
Q22
Q92
Q93
Q100
IC16
IC3
IC8
IC9
IC14
IC5
IC13
IC1
CD PLAYER UNIT X32-5650-00 (J74-1644-11)
Refer to the schematic diagram for the values of resistors and capacitors.
X32-5650-00
Ref.No. Address
IC1 4I
IC3 4I
IC5 4H
IC8 4I
IC9 3H
IC13 3H
IC14 3G
IC16 5G
Ref. No. Address
Q1 5I
Q2 5I
Q3 5G
Q6 5G
Q12 2H
Q20 3I
Q22 4J
Q24 5H
Ref. No. Address
Q25 5G
Q26 5G
Q27 5H
Q28 5H
Q40 5F
Q70 4G
Q72 2G
Q73 3G
Ref.No. Address
Q90 2H
Q91 3H
Q92 3J
Q93 3J
Q100 3J

KDC-CMP21V
10
KLMNO
1
2
3
4
5
6
7
PC BOARD
(COMPONENT SIDE VIEW)
119
2
4
85 913 12
1
20
13
2
J1
CN1 J2
SUB CIRCUIT UNIT B X16-2800-00 (J74-1643-12)
CH-MUTE
CH-RST
CH-CLK
Lch
Rch
CH-CON
BU14V
A-GND
DATAC
REQC
REQH
GND
DATAH
SUB CIRCUIT UNIT B X16-2800-00 (J74-1643-12)
W1
W2
1
23
1
16
LIMSW
LOESW
8/12SW
MGND
SP-
SL-
SL+
SP+
BLACK
RED
CN1
CN2
SUB CIRCUIT UNIT A X16-1010-00 (J74-1153-01)
S2
S1
(COMPONENT SIDE VIEW)
(FOIL SIDEVIEW)
Refer to the schematic diagram for the values of resistors and capacitors.