Kenwood CPS87 Service Manual

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

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

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)

KDC-CX87/CPS87

BLOCK DIAGRAM

SW5V

XOFF

LIM SW

L.P.S.

EJ SW

ARM SW

12.5MHz

SPINDLE/LO-EJ

SLED

LOE SW

TR COIL

FO COIL

BTL

EEPROM

&TEXT DECODER

APC

SA5V

S8V

SYSTEM u-COM

IC7

IC1

RF AMP&SARVO DSP

16.93MHz

P-ON

Q10

Q15,16

Q20

BU. DET

IC8

IC5

MG SW

8V AVR

S8V

COMM SW

S-RAM

IC10

DAC DIGITAL FILTER

D.R.I.V.E.

L.P.F

IC3

4.19MHz

AUX SW

I/F u-COM

IC2

RST

BU.

BU14V

CH MUTE

CH RST

REQC0

CHCON

DATAH0

DATA C0

REQH0

HCLK0

AUDIO OUT

BU14V

CH RST2

CH MUTE2

HCLK2 REQC2

DATA C2

REQH2

CHCONO2

DATAH2

AUDIO IN

AUX to AUX

CH2

H.U

RELAY K1,3

K2,4

RELAY

DET

5VREG

IC4

DA5V

S8V

IC1

Q9,10

AVR

+5V

HOT

IC9

RST

7V/9V

Q21,22

M5V1 M5V2

SW5V

+5V

SW5V

&DC MOTOR

DRIVER

ELEVATOR

AVR

SA5V

&D/A CONVERTER &SCF

AUDIO VREF

IC2

MUTE

0bit

Q6,7

MUTE

Q4,5,8

SD5V

M5V2

AVR

IC11

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

12-17 26 61

29,30,60

74,77

IC1

LCD DRIVER

LCD1

19-22,32,66

CN101

CN1

6-43

RL1

CN105

RADIO

CN104

ANT IN

Q310

MODE 1,2

CH-CONTROL

Q306,

RIPPLE FILTER

307

MIX

PILOT

STAGE

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

KDC-CX87/CPS87

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

●CD 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.

●SUB-CIRCUIT UNIT (X13-9930-00)

COMPONENT DESCRIPTION

Ref.No.

Component Name

Application/Function

Operation/Condition/Compatibility

KDC-CX87/CPS87

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.

KDC-CX87/CPS87

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.)

●IC1 (SUB-CIRCUIT UNIT: X13-9930-00)

KDC-CX87/CPS87

MICROCOMPUTER'S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Description Processing Operation

1 NOR/RW O CD-DA/CD-RW Switching Not used(N.C.) 2 TSTB O CD-TEXT parameter strobe 3 P-CON O P-CON output Not used(N.C.) 4 FOK I Focus OK input "Hi" : Focus OK 5 XTALEN O Servo IC oscillation stop control "Hi" : Oscillation stop 6 RST O Servo IC reset terminal "Lo" : Reset 7 SAO O Servo IC command/parameter setting terminal

"Hi" : Parameter setting, "Lo" : Address resister setting

8 SSTB O

Servo IC command/parameter setting strobe terminal

"Hi"➝"Lo" : Serial data latch

9 VDD - Positive power supply connection terminal Connected to D 5V lines. 10 X2 - Main clock resonator connection terminal 2 11 X1 I Main clock resonator connection terminal 1 12 VSS - Ground connection terminal Connected to GND lines. 13 XT2 - Sub clock resonator connection terminal 2 Not used(N.C.) 14 XT1 I Sub clock resonator connection terminal 1 Not used(connected to GND lines.) 15 RESET I System reset input "Lo" : System reset 16 FOGUP I Vibration detect input "Hi" : Vibration detect 17 MGSW I Magazine switch input "Hi" : Magazine in 18 EJSW I Eject switch input "Hi" : Eject switch ON 19 COMMSW I 5-line communication old/new switch input

"Hi" : New communication, "Lo" : Old communication 20 PACK I Text data pack synchronous signal input "Hi"➝"Lo" : The head of the pack data 21 CH-CON I Changer control input "Hi" : Standby mode, "Lo" : Operation mode

22 BUDET I Momentary power down detection input

"Hi" : When momentary power down detected or BU OFF

"Lo" : BU ON 23 AVDD -

A/D converter positive power supply connection terminal

Connected to D 5V lines. 24 AVREF0 I A/D converter reference voltage input Connected to PON 5V lines. 25 HOT I Rise in temperature detection input 26 LPS I LPS Mechanical deck position detection input 27 LOESW I Loading complete switch input "Lo" : Loading complete 28 LIMSW I Limit switch input "Lo" : Pickup most inner position 29 TOFF I Tracking OFF mode terminal Not used(pull down to GND lines.) 30 ADJSEL I Servo automatic adjustment ON/OFF terminal Not used(pull down to GND lines.) 31 TBANK I Tracking gain switching mode terminal Not used(pull down to GND lines.) 32 SIM2 I Destination input 2 Not used(pull down to GND lines.) 33 AVSS - A/D, D/A converter ground connection terminal Connected to GND lines. 34 LPSCO O

LPS A/D converter reference power control output

Not used(N.C.) 35 AMUTE O Audio mute output "Lo" : Audio mute ON 36 AVREF1 I D/A converter reference voltage input Connected to D 5V lines. 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/output with H/U

●IC7 (CD PLAYER UNIT : X32-5160-00)

KDC-CX87/CPS87

MICROCOMPUTER'S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Description Processing Operation

43 RECQC O Communication request to H/U "Lo" : Communication requested

44 CHMUTE O Audio mute request to H/U "Lo" : Audio mute requested

45 TSI I Text data input from servo IC

46 TSO O Text data output to servo IC

47 TSCK O Text data clock to servo IC

48-55 A0-A7 O Address setting terminal for S RAM

56-63 D0-D7 I/O Data input/output terminal with S RAM

64-68 A8-A12 O Address setting terminal for S RAM

69-71 A13-A15 O Chip enable setting terminal for S RAM Not used(pull down to GND lines.)

72 VSS - Ground connection terminal Connected to GND lines.

73 A16 O Chip enable setting terminal for S RAM Not used(pull down to GND lines.)

74 A17 O Chip enable setting terminal for S RAM

75 RAMOK O Pickup check judging terminal for production Not used(N.C.)

76 ELVADJ I

Mechanism deck ascent/descent position terminal

Not used(pull up to D 5V lines.)

77 RD O Read-out to S RAM control output

78 WR O Write to S RAM control output

79 WAIT I

Waiting time insertion input when accessing S RAM

Not used(pull down to GND lines.)

80 ASTB O Chip selection to S RAM Not used(N.C.)

81 VDD - Positive power supply connection terminal Connected to D 5V lines.

82 PUSEL I Pickup type select terminal Not used(pull up to D 5V lines.)

83 REQH I Communication request from H/U "Lo" : Communication requested

84 SPLO+ O Spindle/Loading control terminal

85 SPLO- O Spindle/Loading control terminal

86 ELV+ O Mechanism deck ascent/descent terminal

87 ELV- O Mechanism deck ascent/descent terminal

88 SIM1 I Destination input 1

"Hi" : adapted for CD-TEXT

"Lo" : not adapted for CD-TEXT

89 SEARCH O Search mode output Not used(N.C.)

90 TEST1 I Test mode terminal 1 for test mode Not used(pull down to GND lines.)

91 TEST2 I Test mode terminal 2 for test mode Not used(pull down to GND lines.)

92 8/7V O Motor driver IC power voltage control output "Hi" : 7V, "Lo" : 8.5V

93 EEPWR I EEPROM write mode terminal for production Not used(pull down to GND lines.)

94 TEST/VPP I Flash ROM program mode terminal Not used(connected to GND lines.)

95 SRVSEL I

Servo active mode terminal (no mechanism movement)

Not used(pull down to GND lines.)

96 SLNSA I Sled non-sensitive area ON/OFF terminal Not used(pull down to GND lines.)

97 SDA I/O Data input/output with EEPROM

98 SCL O Clock output to EEPROM

99 PON O PON output "Lo" : AVR & LPS POWER ON

100 ARMSW I Arm switch input "Hi" : Arm switch ON

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