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© 1999-11 PRINTED IN JAPAN
B51-7552-00 (N) 3444
CD AUTO CHANGER
SERVICE MANUAL
KDC-CX85/CPS85
COMPACT DISC AUTO CHANGER
KDC-CPS85
D.R.I.V.E.
NEW ANTI VIBRATION MECHANISM
DYNAMIC RESOLUTION INTENSIVE VECTOR ENHANCEMENT
DISC NAME PRESET
TEXT
10 DISC
COMPACT
DIGITAL AUDIO
BADGE
CX85 :(B43-1238-04)
CPS85:(B43-1237-04)
DRESSING PANEL
CX85 :(A21-3535-12)
CPS85:(A21-3544-12)
BRACKET
(J19-4712-13)
BLIND PLATE
(F19-1303-04)
SCREW SET
K/E TYPE:
(N99-1645-15)
M TYPE:
(N99-1628-15)
MOUNTING HARDWARE ASSY
(J21-7775-04)
ADHESSIVE TAPE
(J69-0506-04)
M TYPE ONLY
CORD WITH PLUG
(E30-4138-05)
HOLDER ASSY(MAGAZINE)
(J19-4676-52)
FRONT GLASS
CX85 :(B10-3076-04)
CPS85:(B10-2997-04)
DRESSING PANEL
CX85 :(A21-3538-12)
CPS85:(A21-3545-12)
PANEL
CX85 :(A64-1991-01)
CPS85:(A64-1993-01)
The MECHANISM OPERATION is the same as model KDC-C710.
Please refer to the service manual of model KDC-C710(B51-7104-00).


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KDC-CX85/CPS85
2
BLOCK DIAGRAM
M5V
XOFF
LIM
SW
L.P
.S
.
EJ
SW
ARM
SW
12.5MHz
A
VREF0
X2
SPINDLE
SLED
M
M
LOE
SW
FO
.COIL
TR.
COIL
B
A
UPC63702A
BTL
DRIVER
ELEV
A
T
OR
EEPR
OM
AK93C45AF
HO
T
UPC2572A
APC
A5V
Q22
+B
BA6791FP
UPD784214GC066
SYSTEM
u-COM
IC7
IC9
SIGNAL
PR
OCESSOR
IC13
RF
AMP
16.9344MHz
X1
P
ON
Q6
V
O
LT
A
GE
SELECT
Q999
AV
R
Q998
5V
A
V
R
IC10
IC11
5
10
14
4
3
8
2
4
IC12
BA6219FP-Y
LC89170M
TEXT
DECODER
IC8
4
4
MG
SW
Q21
SER
V
O+B
+B
COMM
SW
IC5
LC3564ST
S-RAM
24
DSP5V
M5V
MO
T
OR
DRIVE
C
D
IC6
DA
C
DIGIT
AL
FIL
TER
D
.R.I.V
.E.
4
KKZ05F
L.P
.F
NJM5532MD
IC1
Q1,2
MUTE
X1
4.19MHz
A
UX
SW
UPD78058GC82T
I/F
u-COM
IC1
IC2
RST
+5V
6
Q7
BU
B
U14V
CH
MUTE
CH
RST
REQC0
CHCON
D
A
T
AH0
D
ATA
C
0
REQH0
HCLK0
A
UDIO
OUT
B
U
14V
CH
RST2
CH
MUTE2
HCLK2
REQC2
D
ATA
C
2
REQH2
CHCONO2
D
A
T
AH2
6
A
UDIO
AU
X
to
AU
X
CH2
H/U
8
RELA
Y
K1,3
K2,4
RELA
Y
DET
to
to
A
UDIO
VREF
IC2
5VREG
IC3
D
A5V
+B
M
PICKUP
ASSY
(X13-9730-00)
(X32-4680-00)
(X13-9790-00)
(X92-3630-02)


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KDC-CX85/CPS85
3
MICROCOMPUTER'S TERMINAL DESCRIPTION
UPD 7805GCB82T : IC1 (X13-9790-00)
Pin
Pin Name
I/O
Function
Description
Processing Operation
1
P15/AN15
O
Not used.
2
P16/AN16
O
Not used.
3
P17/AN17
O
Not used.
4
AVss
-
A/D converter reference ground terminal
5
P130/ANO0
O
RSTOUT
Reset output
H: Reset
6
P131/ANO1
O
REQH1
Communication request output to CH1
L: Request
7
AVref1
I
AVref1
A/D converter reference power terminal
8
P70/SI2/RXD
I
DATAC1
Data input from CH1
9
P71/SO2/TXD
O
DATAH1
Data output to CH1
10
P72/SCK2/ASCK
I/O
HCLK1
Communication clock input/output to/from CH1
11
P20/SI1
I
DATAH0
Data input from H/U
12
P21/SO1
O
DATAC0
Data output to H/U
13
P22/SCK1
I/O
HCLK0
Communication clock input/output to/from H/U
14
P23/STB
O
REQC0
Communication request output to H/U
L: Communication request
15
P24/BUSY
O
REQH2
Communication request output to CH2
L: Communication request
16
P25/SI0/SB0/SDA0
I
DATAC2
Data input from CH2
17
P26/SO0/SB1/SDA1
O
DATAH2
Data output to CH2
18
P27/SCK0/SCL
I/O
HCLK2
Communication clock input/output to/from CH2
19
P40/AD0
O
CHCONO1
Control output to CH1
H: CH1 control output
20
P41/AD1
O
CHCONO2
Control output to CH2
H: CH2 control output
21
P42/AD2
O
RELAY1
Control output to RELAY1
H: AUX L: CH1
22
P43/AD3
O
RELAY2
Control output to RELAY2
H: CH2 L: CH1
23
P44/AD4
O
MSTOP
BU instant dip detection output to CH1
H: BU instant dip
detection output
24
P45/AD5
O
Not used.
25
P46/AD6
O
Not used.
26
P47/AD7
O
Not used.
27
P50/A8
O
Not used.
28
P51/A9
O
Not used.
29
P52/A10
O
Not used.
30
P53/A11
O
Not used.
31
P54/A12
O
Not used.
32
P55/A13
O
Not used.
33
VSS
-
VSS
Connected to GND.
34
P56/A14
O
Not used.
35
P57/A15
O
Not used.
36
P60
O
Not used.
37
P61
O
Not used.
38
P62
O
Not used.
39
P63
O
Not used.
40
P64
O
Not used.


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KDC-CX85/CPS85
4
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin
Pin Name
I/O
Function
Description
Processing Operation
41
P65
O
Not used.
42
P66
O
Not used.
43
P67
O
Not used.
44
P30
O
Not used.
45
P31
O
Not used.
46
P32
O
Not used.
47
P33
O
Not used.
48
P34
O
Not used.
49
P35
O
Not used.
50
P36
O
Not used.
51
P37
O
Not used.
52
P120/RTP0
O
Not used.
53
P121/RTP1
O
Not used.
54
P122/RTP2
O
Not used.
55
P123/RTP3
O
Not used.
56
P124/RTP4
O
Not used.
57
P125/RTP5
O
Not used.
58
P126/RTP6
O
Not used.
59
P127/RTP7
O
Not used.
60
RESET
I
RESET
RESET
L:RESET
61
P00/INTP0/TI00
I
REQC2
Communication request inpout from CH2
L: Communication request
62
P01/INTP1/TI01
I
BUDET
BU instant dip detection input
H: BU instant dip detection
63
P02/INTP2
I
AUX SW
External input switch
H: External input
64
P03/INTP3
I
REQH0
Communication request input form H/U
L: Communication request
65
P04/INTP4
I
REQC1
Communication request input from CH1
L: Communication request
66
P05/INTP5
I
CHCON1
CH1 control input from H/U
L: Control on CH1
67
P06/INTP6
I
COMMSW
5-line communication old/new selection swtcih
H: New communicaton
L: Old communication
68
Vdd
-
VDD
Positive power voltage
69
X2
-
X2
Oscillator connection terminal
70
X1
I
X1
Oscillator connection terminal
71
IC(Vpp)
-
IC
Internal connection terminal
72
XT2
-
XT2
73
XT1/P07
I
CHCON2
CH2 control input from H/U
L: Control on CH2
74
Avdd
-
AVDD
A/D analog power voltage
75
AVref0
I
AVREF0
A/D reference voltage input
76
P10/ANI0
O
Not used.
77
P11/ANI1
O
Not used.
78
P12/ANI2
O
Not used.
79
P13/ANI3
O
Not used.
80
P14/ANI4
O
Not used.


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KDC-CX85/CPS85
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
qUPD 784214GC-066 : IC7 (X32-4680-00)
Pin
Pin Name
I/O
Function
Description
Processing Operation
1
P120/RTP0
O
LDON
Pickup laser ON
H: Laser ON
2
P121/RTP1
O
TBCO
Tracking filter coefficient switching signal output
H: Gain-up mode
3
P122/RTP2
I
TBCI
Tracking filter coefficient switching signal input
H: Gain-up mode
4
P123/RTP3
I
RFOK
Focus ON status signal input
H: Focus ON
5
P124/RTP4
O
XOFF
Servo IC oscillation stop control
H: Oscillatin stop
6
P125/RTP5
O
RST
Servo IC reset terminal
L: Reset
7
P126/RTP6
O
SAO
Servo IC address setting
8
P127/RTP7
O
SSTB
Servo IC communication strobe
9
VDD
-
VDD
Positive power voltage connection terminal
10
X2
-
X2
Oscillator connection terminal 2
11
X1
I
X1
Oscillator connection terminal 1
12
VSS
VSS
GND potential connection
13
XT2
XT2
Subclock connection terminal 2
14
XT1
XT1
Subclock connection terminal 1
15
RESET
I
RESET
Reset
16
P00/INTP1
I
SBSY
Sub-code Q read timing detection terminal
17
P01/INTP2
I
MGSW
Magazine switch
H: Magazine in
18
P02/INTP2
I
EJSW
Eject switch
H: Swtich ON
19
P03/INTP3
I
COMMSW
5-line communicatin old/new swtich
H: New communication
L: Old communication
20
P04/INTP4
I
DQSY
Text data read permission signal input
21
P05/INTP5
I
CHCON
Changer control input from H/U
22
P06/INTP6
I
BUDET
BU instant dip detection terminal
23
AVDD
-
AVDD
A/D converter analog power terminal
24
AVREF0
I
AVREF0
AD converter reference voltage input
25
P10/ANI0
I
HOT
Rise in temperature detection
26
P11/ANI1
I
LPS
Mechanical deck position detection
27
P12/ANI2
I
LOESW
Loading compete switch
L: Loading complete
28
P13/ANI3
I
LIMSW
Limit switch
L: Pickup detection of
innermost track
29
P14/ANI4
I
TYPE0
For test mode
30
P15/ANI5
I
TYPE1
For test mode
31
P16/ANI6
I
SLG1
For setting thread loop gain
32
P17/ANI7
I
SLG2
For setting thread loop gain
33
AVSS
-
AVSS
A/D converter reference GND terminal
34
P130/ANO0
O
LPSCO
A/D converter reference power control
35
P131/ANO1
O
AMUTE
Audio mute
L: Mute ON
36
AVREF1
-
AVREF1
A/D converter reference power terminal
37
P70/RxD2/SO2
I
SDI
Servo IC communication serial data input
38
P71/TxD2/SO2
O
SDO
Servo IC communication serial data output
39
P72/ASCK2/SCK2
O
SCK
Servo IC communication serial clock output
40
P20/RxD1/SI1
I
DATAH
Data input from H/U