KENWOOD KDCCPS87 Service Manual

KENWOOD KDCCPS87 Service Manual
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Service Manual for KENWOOD KDCCPS87, downloadable as a PDF file.

We also have owner's manual to this model.

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Sample pages

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)

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".

DTC124EUA

While CD-CH1's outputs are selected, Q1's base goes "Lo", and Q3 is

Relay drive

turned off.

DTB123YK

(CH1/CH2 switching) While CD-CH2's outputs are selected, Q1's base goes "Hi", and Q3 is

turned on.

DTC124EUA

Relay drive

While CD-CH's outputs are selected, Q2's base goes "Lo", and Q4 is

(CH/AUX switching)

turned off.

DTB123YK

While AUX inputs are selected, Q2's base goes "Hi", and Q4 is turned on.

2SC4081

CH CON2 SW

While CH CON2 mode is selcted, a base goes "Hi", and Q5 is turned on.

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.

DTC124EUA

BU DETECTION SW

When momentary power down has detected, a base goes "Lo", and Q7 is

turned off.

DTC124EUA

Reset SW

When System Reset has activated, a base goes "Hi", and Q8 is turned on.

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

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

MCH6101

APC

Laser diode auto power control

DTA124EK

0 bit mute (L CH.)

When 0 bit mute is activated, an emitter goes "Hi", and Q4 outputs "Hi".

DTA124EUA

0 bit mute (R CH.)

When 0 bit mute is activated, an emitter goes "Hi", and Q5 outputs "Hi".

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.

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.

DTA124EK

A mute drive

When audio mute of IC7 is activated, a base goes "Lo", and audio mute

drive signal is outputted.

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

Not used(N.C.)

AVSS

A/D, D/A converter ground connection terminal

Not used(N.C.)

REQH1

Communication request output to CH1

"Lo" : Communication requested

AVREF1

D/A converter reference voltage input

DATAC1

Data input from CH1

DATAH1

Data output to CH1

HCLK1

I/O Communication clock input/output with CH1

DATAH0

Data input from H/U

DATAC0

Data output to H/U

HCLK0

I/O Communication clock input/output with H/U

REQC0

Communication request output to H/U

"Lo" : Communication requested

REQH2

Communication request output to CH2

"Lo" : Communication requested

DATAC2

Data input from CH2

DATAH2

Data output to CH2

HCLK2

I/O communication clock input/output with CH2

CHCON01

Control output to CH1

"Hi" : CH1 operation mode

CHCON02

Control output to CH2

"Hi" : CH2 operation mode

RELAY1

Relay1 Control output

"Hi" : AUX inputs, "Lo" : Changer outputs

RELAY2

Relay2 Control output

"Hi" : CH2 outputs, "Lo" : CH1 outputs

23-32

Not used(N.C.)

VSS

Ground connection terminal

Connected to GND lines.

34-59

Not used(N.C.)

RESET

System reset

"Lo" : System reset

REQC2

Communication request input from CH2

"Lo" : Communication requested

BUDET

Momentary power down detection input

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

"Lo" : BU ON

AUX SW

AUX SW input

"Hi" : Auxiliary input mode

REQH0

Communication request input form H/U

"Lo" : Communication requested

REQC1

Communication request input form CH1

"Lo" : Communication requested

CHCON1

Changer control mode input from H/U

"Lo" : CH1 mode

COMMSW

5-line communication old/new switch input

"Hi" : New communication, "Lo" : Old communication

VDD

Positive power supply connection terminal

Connected to BU 5V lines.

Main clock resonator connection terminal 2

Main clock resonator connection terminal 1

IC Internal connection terminal

Connected to GND lines.

Not used(N.C.)

CHCON2

Changer control mode input from H/U

"Lo" : CH2 mode

AVDD

A/D converter positive power supply connection terminal

Connected to BU 5V lines.

AVREF0

A/D converter reference voltage input

Connected to BU 5V lines.

Not used(N.C.)

AUX TYPE

Not used(pull down to GND lines.)

78-80

Not used(N.C.)

GIC1 (SUB-CIRCUIT UNIT: X13-9930-00)

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KENWOOD KDCCPS87 Service Manual

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