KENWOOD KDCCX87 Service Manual

Cover page of KENWOOD KDCCX87 Service Manual

Service Manual for KENWOOD KDCCX87, downloadable as a PDF file.

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© 2001-1 PRINTED IN JAPAN
B51-7730-00 (N) 3387
CD AUTO CHANGER
KDC-CX87/CPS87
SERVICE MANUAL
COMPACT DISC AUTO CHANGER
KDC-CX87
D.R.I.V.E.
NEW ANTI VIBRATION MECHANISM
DYNAMIC RESOLUTION INTENSIVE VECTOR ENHANCEMENT
DISC NAME PRESET
TEXT
10 DISC
COMPACT
DIGITAL AUDIO
CD-R/RW
COMPACT DISC AUTO
D.R.I.V.E.
NEW ANTI VIBRATION MECHANISM
DYNAMIC RESOLUTION INTENSIVE VECTOR ENHANCEMENT
DISC NAME PRESET
TEXT
10 DISC
COMPACT
DIGITAL AUDIO
CD-R/RW
CHANGER
KDC-CPS87
Illustration is KDC-CX87.
Illustration is KDC-CPS87.
BRACKET x 2
(J19-4712-23)
SCREW SET
(N99-1645-15)
: KDC-CX87, CPS87(E)
SCREW SET
(N99-1628-15)
: KDC-CPS87(M)
MOUNTING
HARDWARE ASSY x 2
(J21-9588-04)
: KDC-CPS87(M)
HOLDER ASSY
(J19-5074-02)
BLIND PLATE
(F19-1303-04)
TRAY
(J99-0612-01)
ADHESIVE TAPE x 2
(J69-0506-04)
: KDC-CPS87(M)
CORD WITH PLUG
(E30-4291-05
or E30-4954-05)
The MECHANISM OPERATION is the same as model KDC-C710.
Please refer to the service manual of model KDC-C710 (B51-7104-00).
Service jig
Parts No.
For initial position setting
W05-0635-00
When transporting these models, always attach CAUTION CARD and STEPPED SCREW (for transportation)
background image
© 2001-1 PRINTED IN JAPAN
B51-7730-00 (N) 3387
CD AUTO CHANGER
KDC-CX87/CPS87
SERVICE MANUAL
COMPACT DISC AUTO CHANGER
KDC-CX87
D.R.I.V.E.
NEW ANTI VIBRATION MECHANISM
DYNAMIC RESOLUTION INTENSIVE VECTOR ENHANCEMENT
DISC NAME PRESET
TEXT
10 DISC
COMPACT
DIGITAL AUDIO
CD-R/RW
COMPACT DISC AUTO
D.R.I.V.E.
NEW ANTI VIBRATION MECHANISM
DYNAMIC RESOLUTION INTENSIVE VECTOR ENHANCEMENT
DISC NAME PRESET
TEXT
10 DISC
COMPACT
DIGITAL AUDIO
CD-R/RW
CHANGER
KDC-CPS87
Illustration is KDC-CX87.
Illustration is KDC-CPS87.
BRACKET x 2
(J19-4712-23)
SCREW SET
(N99-1645-15)
: KDC-CX87, CPS87(E)
SCREW SET
(N99-1628-15)
: KDC-CPS87(M)
MOUNTING
HARDWARE ASSY x 2
(J21-9588-04)
: KDC-CPS87(M)
HOLDER ASSY
(J19-5074-02)
BLIND PLATE
(F19-1303-04)
TRAY
(J99-0612-01)
ADHESIVE TAPE x 2
(J69-0506-04)
: KDC-CPS87(M)
CORD WITH PLUG
(E30-4291-05
or E30-4954-05)
The MECHANISM OPERATION is the same as model KDC-C710.
Please refer to the service manual of model KDC-C710 (B51-7104-00).
Service jig
Parts No.
For initial position setting
W05-0635-00
When transporting these models, always attach CAUTION CARD and STEPPED SCREW (for transportation)
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KDC-CX87/CPS87
2
BLOCK DIAGRAM
SW5V
XOFF
LIM SW
L.P.S.
EJ SW
ARM SW
12.5MHz
X2
SPINDLE/LO-EJ
SLED
LOE SW
TR COIL
FO COIL
BTL
EEPROM
&TEXT DECODER
APC
SA5V
Q1
S8V
SYSTEM u-COM
IC7
IC1
RF AMP&SARVO DSP
16.93MHz
X1
P-ON
Q10
Q15,16
Q20
BU. DET
IC8
7
13
4
5
8
2
IC5
MG SW
8V AVR
S8V
COMM SW
S-RAM
24
C
IC10
DAC
DIGITAL FILTER
D.R.I.V.E.
4
L.P.F
IC3
X1
4.19MHz
AUX SW
I/F u-COM
IC2
RST
6
Q7
BU.
BU14V
CH MUTE
CH RST
REQC0
CHCON
DATAH0
DATAC0
REQH0
HCLK0
AUDIO
OUT
BU14V
CH RST2
CH MUTE2
HCLK2
REQC2
DATAC2
REQH2
CHCONO2
DATAH2
6
AUDIO IN
AUX
to AUX
CH2
H.U
5
RELAY
K1,3
K2,4
RELAY
DET
to
to
5VREG
IC4
DA5V
S8V
3
3
3
3
S1
IC1
Q9,10
AVR
5V
+5V
S4
HOT
IC9
RST
7V/9V
5V
Q21,22
M5V1
M5V2
SW5V
S3
S2
S1
+5V
SW5V
M
M
&DC MOTOR
DRIVER
ELEVATOR
M
AVR
SA5V
Q9
&D/A CONVERTER
&SCF
AUDIO VREF
IC2
MUTE
0bit
Q6,7
MUTE
Q4,5,8
SD5V
F
E
A
D
B
PD
M5V2
AVR
IC11
2
ASSY
(X13)
(X32)
(X13)
(X92)
PICKUP
CN101
DRIVER
RESET
Q101,201
ACC
BATT
GND
DETECTION
ACC
(+5V)
AVR
u-COM
IC2
IC1
CN103
Q1,6
Q4,5
VDD
HOLD
P ON
PLL
63
31
67
12-17
26
61
29,30,60
74,77
IC1
LCD DRIVER
LCD1
19-22,32,66
19-22,32,66
CN101
CN1
6-43
RL1
CN105
RADIO
To
CN104
ANT IN
Q310
MODE 1,2
CH-CONTROL
Q306,
RIPPLE
FILTER
307
MIX
PILOT
STAGE
RF
IC301
MODULATOR
FM-St.
Q304,305
LEVEL CONTROL
AUDIO MUTE
Q309
ALC
DETECTION
IC302
AMP
DRIVER
ALC
MPX
EMPHASIS
IC4
AVR(+5.6V)
MODE 1,2
Q308
CD-CH
13P
IC101
ISOLATION
AMP.
L.P.F.
2nd.
IC102
+V(AUDIO)
+V(RF STAGE)
SIGNAL
(L/R)
CN102
KEY MATRIX
2,50-56
VDD
IC2
REMOTE
SENSER
3
1
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KDC-CX87/CPS87
3
IC1
UPD78058GCB82T
System MI-COM.
CH1/CH2/AUX control
IC2
PST9137NR
Reset IC
When BU 5V voltage is less than 3.7V, IC outputs "Lo".
Q1
DTC124EUA
While CD-CH1's outputs are selected, Q1's base goes "Lo", and Q3 is
Relay drive
turned off.
Q3
DTB123YK
(CH1/CH2 switching) While CD-CH2's outputs are selected, Q1's base goes "Hi", and Q3 is
turned on.
Q2
DTC124EUA
Relay drive
While CD-CH's outputs are selected, Q2's base goes "Lo", and Q4 is
(CH/AUX switching)
turned off.
Q4
DTB123YK
While AUX inputs are selected, Q2's base goes "Hi", and Q4 is turned on.
Q5
2SC4081
CH CON2 SW
While CH CON2 mode is selcted, a base goes "Hi", and Q5 is turned on.
Q6
2SC4081
CH CON SW
While CH CON or CH CON2 mode is selcted, a base goes "Hi", and Q6 is
turned on.
While BACKUP is applied, a base goes "Hi", and Q7 is turned on.
Q7
DTC124EUA
BU DETECTION SW
When momentary power down has detected, a base goes "Lo", and Q7 is
turned off.
Q8
DTC124EUA
Reset SW
When System Reset has activated, a base goes "Hi", and Q8 is turned on.
Q9
2SB1202
BU 5V AVR
While BACKUP is applied, AVR outputs +5V.
Q10
2SC4081
Q9 and Q10 are inverted Darlington connection
GCD PLAYER UNIT (X32-5160-00)
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
RF amplifier built in digital servo and data processor IC. Focusing, tracking,
sled and spindle servo processing. Detection of dropout, anti-shock, track
IC1
UPD63711AGC
Servo IC
crossing and off-track conditions.
Automatic adjustment (focusing, tracking, gain, offset and balance)
operations. Digital signal processing (DSP, PLL, sub-codes, CD-TEXT
decode, CIRC error correction, audio data interpolaration) operations.
IC2
NJM4580MD
VREF amp.
Operational reference voltage for low pass filter
IC3
NJM5532MD
Low pass filter
Differential amplifier
IC4
KIA78L05F
+5V AVR
Analogue output circuit power supply for D/A converter
Focusing coil, tracking coil, spindle motor and sled motor driver.
VO1-VO4 and VOL outputs ON/OFF function
While MUTE1 goes "Hi", VO1 outputs are turned on.
While MUTE2 goes "Hi", VO2-VO4 and VOL outputs are turned on.
VIN1 amplifier function (input selection and VREF selection)
IC5
LA6576
Motor driver
1. Input selection
While VIN SW terminal goes "Lo", IC pin 15, 16 and 17 inputs are selected.
While VIN SW terminal goes "Hi", IC pin 15, 18 and 19 inputs are selected.
2. VREF selection
While VIN SW terminal goes "Lo", internal VREF (2.5V typical) is selected.
While VIN SW terminal goes "Hi", external VREF (IC pin 30 input) is selected.
GSUB-CIRCUIT UNIT (X13-9930-00)
COMPONENT DESCRIPTION
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
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KDC-CX87/CPS87
4
COMPONENTS DESCRIPTION
Ref.No.
Component Name
Application/Function
Operation/Condition/Compatibility
IC7
UPD784214GC091
Mechanism MI-COM.
Mechanism and servo control
BR24C02F-W
or CAT24WC02JI
IC8
or M24C02WMN6T
EEPROM
LPS data back-up memory
or S-24C02BFJA
or 24LC02BT-ISN
IC9
S-80830ANNP
Reset IC
When BU 5V voltage is less than 3.0V, IC outputs "Lo".
IC10 KKZ05F
D.R.I.V.E. IC
D.R.I.V.E. system IC
IC11 LC3564BT-70
S RAM
CD-TEXT data memory
Q1
MCH6101
APC
Laser diode auto power control
Q4
DTA124EK
0 bit mute (L CH.)
When 0 bit mute is activated, an emitter goes "Hi", and Q4 outputs "Hi".
Q5
DTA124EUA
0 bit mute (R CH.)
When 0 bit mute is activated, an emitter goes "Hi", and Q5 outputs "Hi".
Q6
DTC343TK
Mute SW (L CH.)
When 0 bit mute or A mute drive is activated, a base goes "Hi", and L
channel audio signal is muted.
Q7
DTC343TK
Mute SW (R CH.)
When 0 bit mute or A mute drive is activated, a base goes "Hi", and R
channel audio signal is muted.
Q8
DTA124EK
A mute drive
When audio mute of IC7 is activated, a base goes "Lo", and audio mute
drive signal is outputted.
Q9
2SB1202
Servo 5V AVR
Q9 is combined with IC5's pin 26 and 27 , and works as a driver of AVR.
Q10
2SB1295
P-ON 5V SW
While base goes "Lo", P-ON 5V is supplied to the microprocessor
peripheral circuits.
Q11
DTC124EK
Reset SW
When System Reset has activated, a base goes "Hi", and Q11 is turned on.
Q12
DTC124EUA
XTALEN SW
While D.R.I.V.E. IC is operating, a base goes "Lo", and Q12 is turned off.
Q13
DTC124EUA
CH CON SW
While CH CON or CH-CON2 mode is selected, a base goes "Hi", and Q13
is turned on.
Q14
DTA143EUA
CH MUTE SW
When MUTE REQUEST to H/U is outputted, a base goes "Lo", and Q14 is
turned on.
Q16
2SC4081
SRV 8V AVR
Q16 is combined with Q15 (X92-), and works as a pre-driver of AVR.
Q17
DTA143EK
SRV 8V AVR SW
When Q18's base goes "Hi", Q17 is turned on, and SVR 8V AVR is
Q18
DTC124EUA
working.
Q19
DTC124EUA
7/9V SW
When a base goes "Hi", Q19 is turned on, and SVR 8V AVR is outputting +7V.
When a base goes "Lo", Q19 is turned off, and SVR 8V AVR is outputting +8.5V.
While BACKUP is applied, a base goes "Hi", and Q20 is turned on.
Q20
DTC124EK
BU DETECTION SW
When momentary power down has detected, a base goes "Lo", and Q20 is
turned off.
Q21
2SB1202
BU 5V AVR
While BACKUP is applied, AVR outputs +5V.
Q22
2SC4081
Q21 and Q22 are inverted Darlington connection.
Q30
DTC114YUA
Eccentric disc SW
When an eccentric disc is detected, Q30 is turned on, and a preceding
beam is made to be delayed.
Q31
DTC124EUA
VIN SW
While spindle servo or disc loading/eject mode is selected, a base goes
"Hi", and Q31 is turned on.
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KDC-CX87/CPS87
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Description
Processing Operation
1 - 3
O
Not used(N.C.)
4
AVSS
-
A/D, D/A converter ground connection terminal
5
O
Not used(N.C.)
6
REQH1
O
Communication request output to CH1
"Lo" : Communication requested
7
AVREF1
I
D/A converter reference voltage input
8
DATAC1
I
Data input from CH1
9
DATAH1
O
Data output to CH1
10
HCLK1
I/O Communication clock input/output with CH1
11
DATAH0
I
Data input from H/U
12
DATAC0
O
Data output to H/U
13
HCLK0
I/O Communication clock input/output with H/U
14
REQC0
O
Communication request output to H/U
"Lo" : Communication requested
15
REQH2
O
Communication request output to CH2
"Lo" : Communication requested
16
DATAC2
I
Data input from CH2
17
DATAH2
O
Data output to CH2
18
HCLK2
I/O communication clock input/output with CH2
19
CHCON01
O
Control output to CH1
"Hi" : CH1 operation mode
20
CHCON02
O
Control output to CH2
"Hi" : CH2 operation mode
21
RELAY1
O
Relay1 Control output
"Hi" : AUX inputs, "Lo" : Changer outputs
22
RELAY2
O
Relay2 Control output
"Hi" : CH2 outputs, "Lo" : CH1 outputs
23-32
O
Not used(N.C.)
33
VSS
-
Ground connection terminal
Connected to GND lines.
34-59
O
Not used(N.C.)
60
RESET
I
System reset
"Lo" : System reset
61
REQC2
I
Communication request input from CH2
"Lo" : Communication requested
62
BUDET
I
Momentary power down detection input
"Hi" : When momentary power down detected or BU OFF
"Lo" : BU ON
63
AUX SW
I
AUX SW input
"Hi" : Auxiliary input mode
64
REQH0
I
Communication request input form H/U
"Lo" : Communication requested
65
REQC1
I
Communication request input form CH1
"Lo" : Communication requested
66
CHCON1
I
Changer control mode input from H/U
"Lo" : CH1 mode
67
COMMSW
I
5-line communication old/new switch input
"Hi" : New communication, "Lo" : Old communication
68
VDD
-
Positive power supply connection terminal
Connected to BU 5V lines.
69
X2
-
Main clock resonator connection terminal 2
70
X1
I
Main clock resonator connection terminal 1
71
IC
-
IC Internal connection terminal
Connected to GND lines.
72
O
Not used(N.C.)
73
CHCON2
I
Changer control mode input from H/U
"Lo" : CH2 mode
74
AVDD
-
A/D converter positive power supply connection terminal
Connected to BU 5V lines.
75
AVREF0
I
A/D converter reference voltage input
Connected to BU 5V lines.
76
O
Not used(N.C.)
77
AUX TYPE
O
Not used(pull down to GND lines.)
78-80
O
Not used(N.C.)
GIC1 (SUB-CIRCUIT UNIT: X13-9930-00)

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