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CD AUTO CHANGER
KDC-C719/C719Y
KDC-C719/G4
SERVICE MANUAL
REVISED
© 2006-5 PRINTED IN JAPAN
B53-0418-00 (N) 960
Model
KDC-C719 (E type)
KDC-C719 (K,M type)
KDC-C719/G4 (M type)
Serial Number
U0400251~
60400351~
67400651~
Cord with plug
(E30-4291-15)
Service jig
For initial position setting
When transporting these models, always attach CAUTION
CARD and STEPPED SCREW (for transportation).
COMPACT DISC AUTO CHANGER KDC-C719
NEW ANTI VIBRATION MECHANISM DISC NAME PRESET
COMPACT
CD-R/RW
DIGITAL AUDIO
Tray
(J99-0614-01)
TEXT
Holder assy
(J19-5146-02)
DISC
10
Parts No.
W05-0635-00
5m
Bracket (L)
(J19-5018-03)
Products for European market comply with the
Bracket (R)
(J19-5019-03)
RoHS
Directive.
Screw set
(N99-1784-05)
This product uses Lead Free solder.
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KDC-C719/C719Y
KDC-C719/G4
(X92)
PICKUP
ASSY (X16-339)
PD
C
DA
B
EF
FO COIL
TR COIL
SPINDLE
M
SLED
M
LOE SW
LIM SW
ELEVATOR
M
(X32)
7
Q1
SD5V
8
BLOCK DIAGRAM
IC1
X1
16.93MHz
HOT
SYSTEM u-COM
12.5MHz
L.P.S.
APC
SA5V
IC5
BTL &
DC MOTOR
DRIVER
IC8
MG SW
ARM SW
EJ SW
RF AMP &
SERVO DSP &
TEXT DECODER &
D/A CONVERTER &
SCF
S8V
Q9
SA5V
AVR
E2PROM
S1
S3
S2
4
5
2
13
S8V
Q6-8
M5V1
IC4
5VREG
MUTE
IC7
M5V2
7V/8V
M5V1
5
IC9
RESET
Q20
BU. DET
Q21,22
5V
AVR
Q10 Q15,16
P-ON
8V AVR
S8V
3
AUDIO
OUT
5L I/F
CH-CON
CH-MUTE
CH-RST
BU14V
to
X16-338
DA5V
2
Q4,5
0bit
MUTE
X2
Q12
AVREF0
2
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KDC-C719/C719Y
KDC-C719/G4
COMPONENTS DESCRIPTION
● CD PLAYER UNIT (X32-5810-00)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 DSP Servo control
IC4 A5V regulator Power supply for 5V audio
IC5 Driver Driving spindle motor, loading/eject operation, elevation operation, driving pick-up ACT
IC7 µ-com Servo control, LX_BUS communication control
IC8 Memory IC ELV operation parameter, Store servo coefficient
IC9 Reset IC
Q1 Current AMP Adjust the current to be applied to the laser
Q4~8 AMUTE SW AMUTE
Q9 SW SA5V
Q10 PON SW PON
Q11 CH RESET SW CH RESET
Q13 CH control SW
Q14 CH MUTE SW CH MUTE
Q16 SW8V
Q17,18 8V SW
Q19 8V/7V SW 8V/7V switching
Q20 BU5V detection SW BU5V detection
Q21,22 BU5V Supply power to IC7
Q30 Anti-scratch measure
Q31 SW Switching loading, eject, and spindle
MICROCOMPUTER’S TERMINAL DESCRIPTION
● SYSTEM MICROCOMPUTER: 784214YGC132A/784217YGC106A (X32: IC7)
Pin No. Pin Name I/O Application
1 NOR/RW O Disc detection result
2 /TSTB O TEXT data strobe signal
3 P_CON O Power supply control signal for video CH
4 FOK I Focus-ON status signal input
5 /XTALEN O Servo IC oscillation stop signal
6 RST O Servo IC reset terminal
7 SA0 O Servo IC communication address setting
8 SSTB O Servo IC communication strobe
9 VDD Positive power supply voltage connection terminal
10 X2 Oscillator connection terminal 2
11 X1 I Oscillator connection terminal 1
12 VSS GND electric potential connection
13 XT2 Sub clock connection terminal 2
14 XT1 I Sub clock connection terminal 1
3
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KDC-C719/C719Y
KDC-C719/G4
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application
15 RESET I Reset
16 FOGUP I Focus gain up terminal
17 MGSW I Magazine switch
18 EJSW I Eject switch
19 COMMSW I 5 line communication new/old switch
20 PACK I TEXT data PACK synch signal
21 CHCON I Changer control input from H/U
22 BUDET I BU power supply detection terminal
23 AVDD A/D converter analog power supply terminal
24 AVREF0 I A/D converter reference voltage input
25 HOT I Temperature rise detection
26 LPS I MD deck up/down position detection
27 LOESW I Loading completion switch
28 LIMSW I Limit switch
29 TOFF I Tracking off mode
30 ADJSEL I Servo auto-adjustment ON/OFF
31 TBANK I Tracking bank switching terminal
32 SIM2 I Model detection terminal
33 AVSS A/D converter standard GND terminal
34 LPSCO O A/D converter reference power supply control
35 AMUTE O Audio mute
36 AVREF1 D/A converter reference power supply
37 SDI I Servo IC communication serial data input
38 SDO O Servo IC communication serial data output
39 SCK O Servo IC communication serial clock output
40 DATAH I Data input from H/U
41 DATAC O Data output from the changer
42 HCLK I/O Communication clock input from H/U
43 REQC O Request of communication with H/U
44 CHMUTE O Audio mute output to H/U
45 TSI I TEXT data input
46 TSO O TEXT data output
47 /TSCK O TEXT clock output
48~71 NC O Not used
72 VSS GND electric potential connection terminal
73,74 NC O Not used
75 PUOK O Pick-up type detection terminal (for production)
76 ELVADJ I MD deck up/down position adjustment mode
77~80 NC O Not used
81 VDD Positive power supply voltage connection terminal
82 PUSEL I Pick-up type detection
83 REQH I Request of communication from H/U
84 SP/LO+ O Spindle/loading control terminal +
4
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MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No. Pin Name I/O Application
85 SP/LO- O Spindle/loading control terminal 86 ELV+ O MD up/down control terminal +
87 ELV- O MD up/down control terminal 88 SIM1 I Standard stack CH destination port
89 SEARCH O Search/play switching port
90 TEST1 I Mechanism duration mode
91 TEST2 I Mechanism duration mode
92 8V/7V O Driver IC for mechanism operation power supply voltage control
93 EEPWR I EEPROM writing mode
94 TEST/VPP I Flash ROM program mode
95 SRVSEL I Servo operation mode (no mechanism operation)
96 SLNSA I Sled blind zone ON/OFF terminal
97 SDA I/O EEPROM data input/output
98 SCL O EEPROM clock output
99 PON O PON output
100 ARMSW I Arm switch
KDC-C719/C719Y
KDC-C719/G4
ADJUSTMENT
● 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 b y pressing 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 dec k
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 adjustment completes. (The data is written in the EEPROM at
this time.)
W05-0635-00
● Caution : Note on IC8 (EEPROM)
Be sure to use the W05-1306-00 when replacing the
EEPROM. IC8 stores the digital ser vo data of the pickup
servo.
Therefore, if the EEPROM does not store servo data, ERROR76 (E-76) will indicate the H/U’ s display section at the
moment CD is played.
5
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A B C D E
KDC-C719/C719Y
KDC-C719/G4
1
PC BOARD (COMPONENT SIDE VIEW)
CD PLAYER UNIT X32-5810-00 (J76-0139-11)
F+
T+
T-
F-
SP-
SP+
SL-
SL+
D24
SPLO-
R123
R122
/TSCK
R105
RMK
119
R162
C71
TSO
AVR0 LPS
TSI
GND
SI
50 26
51
IC7
75
76 100
SRVSEL
VPP
TS2
(ELV+)
SIM1
EEP
TS1
SRH
(ELV-)
R856
R854
R857
R855
D7
C61
R77
D11
D3
R102
D12
SGND
(QH)
CP3
TBANK
R505
SLNSA
ELV-
ELV+
8/7V
D15
TOFF
SCL
SDA
R502
ADJSEL
C70
25
1
PON
GND
AM
(DH)
NC
QH
HOT
16
QC
Q8
X1
N/RW
/TSTB
Q18
CCLK
EB
CRST
PACK
BE
DC
R99
CON
R506
DH
D21
D22
X2
VDD
Q17
CN1
L-CH
R78
R54
R-CH
R53
GND
B14V
LIMSW
ROUT
LOUT
Q16
BE
8V
23
LOESW
R73
R72
D16
/RST
RFOK
A0
/STB
S
/SCK
C15
X1
C17
EMPH
SD5V
D9
D10
SI
C16
26
FLAG
ARMSW
E
TX
F
HOLD
VC
IOP-
LD
PD
IOP+
R7
PN
1
IC1
502551
Q21
EBEB
Q22
BASE
D8
CN2
R
L
(CM)
C52
RST
R507
C68
CCON
IGO
IC4
R97
C69
5V
AGND
EB EB
R106
2
C72
CRST
Q6
Q7
EB
1
43
B14V
AMUTE
AGND
DAVDD
R206
Q11
R96
IC9
AVDD
C63
R79
GND
CM
EB
2
R69
IC5
20 38 1
R68
R70
R67
D23
COMMSW
BE
Q31
3
BDET
R76
EJSW
EB
4
Q20
SPLO+
R127
PSL
ELVADJ
R133
5
R5
(LD)
C1D2
100
1
C2D1
A
B
C2D3
PLCK
C3
TE2
C4
LOCK
C5
C
D
TE0
C2D2
(E)
C1D1
VR
R11
R12
R13
R14
FE0
R59
C6
MIRR
R4
(F)
76
75
ATEST
RFCK
(A)
(C)
C9
DAC3
DAC1
(B)
(D)
C7
RF0
C10
DAC2
R87
C11
DAC0
TSTB
PACK
R84
R16
TSI
SA5V
C8
C19
AGC
EFM
R851
GND
ASY
MD
SD
TD
FD
/TSCK
TS
MGSW
C851
6
X32-5810-00
Ref. No. Address
IC1 3D
IC4 3C
IC5 2B
IC7 4B
IC9 4C
Q6 3C
Ref. No. Address
Q7 3C
Q8 3C
Q11 4C
Q16 5D
Q17 5C
Q18 5C
Ref. No. Address
Q20 4A
Q21 5D
Q22 5D
Q31 3A
7
Refer to the schematic diagram for the values of resistors and capacitors.
6