Kenwood X-92445000, X-92443000 Service manual

2002-1 PRINTED IN JAPAN

B51-7889-00 (N) 3415

CD MECHANISM ASSY

SERVICE MANUAL

X92-4430-0x X92-4450-0x

DESCRIPTION MECHANISM

X92-4430-00 (DXM-6010W) X92-4430-01 (DXM-6011W) X92-4430-02 (DXM-6012W) X92-4430-03 (DXM-6013W)

X92-4450-00 (DXM-6110W) X92-4450-01 (DXM-6111W) X92-4450-02 (DXM-6112W) X92-4450-03 (DXM-6113W)

outer-chassis

dumper (X4)

floating spring (X4)

traverse chassis assy

Mecha PCB

roller spring

roller lever assy

damper bracket

disc guide assy

CONSTRUCTION OF MAJOR PARTS

X92-4430-0x X92-4450-0x

NOTE FOR HANDLING MECHANISM ASSY

Trigger Lever

Pick is under the finger, it may touch.

Don’t touch the lever because the trigger lever comes off.

Don’t have the center of entrance because the disc insertion mouth is transformed.

OK OK

PICK UP

SPINDLE MOTOR

SLIDER ASSY

ROLLER

OK OK NG

• Don’t touch in the frame, since grease is applied to the parts.

• Don’t applied grease to the roller.

• Don’t touched PICK and SPINDLE MOTOR.

X92-4430-0x X92-4450-0x

TR COIL FO COIL

APC

1 CHIP IC

SERVO

MI-COM

IC2

16.93MHz

CLOCK

DRIVER

MOTOR

IC4

PROCESSOR

SPINDLE

MOTOR

& SLED

LPF

IC6

8V SW

D. GND

(0-01)

ONLY

RF AMP

IC1

REF

5V REG

S. GND

A. GND

D. GND

SLED

5V SW

D. GND

PICK-UP

MOTHER BOARD

VREF

L-ch

R-ch

A. GND

A. +8V

D. GND

BU. +5V

LOE/LIM SW

8EJE SW

12EJE SW

LOS SW S7.5V

LO/EJ

MOTOR

S. GND

VREF

DRV MUTEMUTE

DOUT

DATA

CLK

MSTOP

MRST

MUTE L

MUTE R

H L

D+5V

BLOCK DIAGRAM

COMPONENTS DESCRIPTION

Ref.No.

Component Name Application/Function Operation/Condition/Compatibility

Generation of RF signal based on the signals from the APC circuit and pickup, and generation of servo error (focusing error and tracking error) signals. Detection of dropout, anti-shock, track crossing and off-track conditions, included gain control function during CD-RW. Focusing, tracking, sled and spindle servo processing. Automatic adjustment (focusing, tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data interpolaration) operations, and Microcomputer function. Focusing, tracking, sled and spindle servo processing. Automatic adjustment (focusing, tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data interpolaration) operations, included CD-text decoder and Microcomputer function. Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and eject operation. 2nd low pass filter for audio signals LD power control When D.5V SW is turned on, Q2 and Q3 are turned on, and A.+8V is supplied to low pass filter circuit and D/A converter. When PON goes Hi, Q4 and Q5 are turned on, and BU+5V is supplied to microprocessor peripheral circuit, IC1 and the pickup.

●

CD PLAYER UNIT (X32-5180-0X, X32-5200-0X)

IC1

IC2

IC4 IC6

Q1 Q2

Q3 Q4 Q5

AN22000AA

MN662774KJ2 (X32-5180-0X)

MN662773KH2 (X32-5200-0X)

BA5824FP NJM4580M1

MCH6101 DTC124EUA

DTA143XUA 2SA1362(Y) DTC124EUA

RF amplifier adapted for CD-RW

CD signal processor bult-in MI-COM.

4CH BTL driver Low pass filter

APC A.8V SW

D.5V SW

X92-4430-0x X92-4450-0x

MICROCOMPUTER'S TERMINAL DESCRIPTION

●

IC2(CD PLAYER UNIT : X32-5180-0X, X32-5200-0X)

Pin No. Pin Name I/O Description Processing Operation

1 BDO I Dropout signal input Hi : Dropout detected 2 OFT I Off-track signal input Hi : Off-track detected 3 /RFDET I RF detection input Hi : RF signal detected 4 VDET I Vibration detection input Hi : Vibration detected 5 LDON O Laser diode ON signal output Hi : Laser diode ON

6,7 NC - Not used (N.C.)

8 AVSS3 - Ground connection terminal for analogue circuits Connected to GND lines. 9 AVDD3 -

Positive power supply connection terminal for analogue circuits

Connected to BU 5V lines. 10 FBAL O Focusing balance adjustment output 11 TBAL O Tracking balance adjustment output 12 FE I Focusing error signal input

13,14 NC - Not used (N.C.)

15 TE I Tracking error signal input

16-18 NC - Not used (N.C.)

19 RFENV I RF envelope signal input 20 VREF I VREF input terminal 21 ARF I RF signal input (for DSL) 22 DRF I DSL bias terminal 23 DSLF I/O DSL loop filter terminal 24 IREF I Reference current input terminal 25 PLLF I/O PLL loop filter terminal 26 PLLF2 I/O PLL loop filter characteristic switching terminal 27 VCOF I/O VCO loop filter terminal 28 VCOF2 I/O VCO loop filter terminal Digital servo 33.8688MHz generation 29 TRV O Traverse forced feed output 30 TVD O Traverse drive output 31 PC O Spindle motor ON/OFF output (Lo : ON) Not used (N.C.) 32 ECM O Spindle motor drive output (forced mode output) 33 ECS O Spindle motor drive output 34 KICK O Kick pulse output 35 TRD O Tracking drive output 36 FOD O Focusing drive output 37 TOFS O Tracking off-set adjustment output

38 AVDD2 -

Positive power supply connection terminal for analogue circuits

(for DSL, PLL, AD, DA)

Connected to BU 5V lines.

39 AVSS2 -

Ground connection terminal for analogue circuits (for DSL, PLL, AD, DA)

Connected to GND lines. 40 DVSS2 - Ground connection terminal for digital circuits Connected to GND lines.

41 EFM or CK384 O EFM signal output Not used (N.C.) 42 PCK or DSLB O PLL sampling clock output 43 /CLDCK O Sub-code frame clock signal output Not used (N.C.) 44 FCLK O Crystal frame clock signal output Not used (N.C.) 45 IPFLAG O Interpolation flag signal output (Hi : Interpolated) Not used (N.C.) 46 FLAG O Flag signal output Not used (N.C.) 47 TRCRS I Track crossing signal input 48 STOUT O Serial data output for monitor signal Not used (N.C.) 49 STLD O Load output for monitor signal Not used (N.C.) 50 SMCK O Bit clock signal output for monitor signal Not used (N.C.) 51 CSEL I Crystal oscillation frequency selection terminal Hi : 33.8688MHz, Lo : 16.9344MHz

52 TEST1 I test terminal 1 Not used (Connected to GND lines) 53 TEST2 I test terminal 2 Not used (Connected to GND lines) 54 IOSEL I Audio DAC data input mode selection terminal Hi: External data, Lo: Internal data 55 NRST I Reset input (Lo: Reset)

Not used(Connected to BU 5V lines)

56 BCLK O Bit clock output for SRDATA Not used (N.C.) 57 LRCK O L/R identification signal output Not used (N.C.) 58 SRDATA O Serial data output Not used (N.C.) 59 SUBC O Sub-code serial output Not used (N.C.) 60 SBCK I Clock input for Sub-code serial output Not used (Connected to GND lines) 61 DQSY O CD-TEXT read permission signal output Not used (N.C.) 62 DEMPH O De-emphasis detection signal output (Hi : ON) Not used (N.C.) 63 TX O Digital audio interface signal output 64 PSEL I SRDATA input/Test terminal Not used (Connected to GND lines) 65 MSEL I LRCK input/SMCK output frequency switching Not used (Connected to GND lines) 66 SSEL I BCLK input Not used (Connected to BU 5V lines) 67 DVDD1 -

Positive power supply connection terminal for digital circuits

Connected to BU 5V lines. 68 X1 I Crystal oscillation circuit connection terminal 69 X2 O Crystal oscillation circuit connection terminal 70 DVSS - Ground connection terminal for digital circuits Connected to GND lines. 71 XSUB1 I Microprocessor clock input terminal Not used (Connected to GND lines) 72 XSUB2 O Microprocessor clock output terminal Not used (N.C.) 73 DVDD2 -

Positive power supply connection terminal for digital circuits

Connected to BU 5V lines.

74,75 NC O Not used(N.C.)

76 73/74SEL I 73/74 selection terminal

Hi : CD-TEXT OFF (DXM-601xW)

Lo : CD-TEXT ON (DXM-611xW) 77 DRV MUTE O Driver muting control terminal

Lo : Spindle motor, focusing

actuator and tracking actuator

outputs OFF

78,79 NC O Not used (N.C.)

80 TEST I Test mode switching terminal Not used (Connected to GND lines) 81 ASEL I Audio output polarity detection terminal Hi : Non inverted, Lo : Inverted 82 PON O Audio/digital power supply control terminal Hi : Power ON 83 SEARCH O Servo IC gain switching control terminal Hi : Search, Lo : Normal operation 84 EQCNT O RF amplifier doable-speed switching control terminal Not used (N.C.) 85 SW3 I Limit switch detection terminal Hi→Lo : Pickup most inner position 86 /AMUTE L O L Ch. analogue muting control terminal Lo : Muting requested 87 /AMUTE R O R Ch. analogue muting control terminal Lo : Muting requested 88 CD-RW O CD-RW control terminal Hi : CD-RW, Lo : Normal operation 89 /RST I System reset input terminal Lo : System reset 90 MECHASEL I 6000/6010 selection terminal Lo : 6000 series, Hi : 6010 series 91 /MSTOP I Standby detection terminal Hi : Operation mode, Lo : Stop mode 92 LDCNT O LD control terminal Hi : LD ON, Lo : LD OFF 93 DATA I/O

I2C bus data line (communication line with System microprocessor)

94 /CLK I/O

I2C bus clock line (communication line with System microprocessor) 95 HOT I Temperature protection detection terminal Not used (Connected to GND lines) 96 AVREF - A/D converter reference voltage connection terminal Connected to BU 5V lines. 97 OUT R O R Ch. Audio output 98 AVDD1 -

A/D converter positive power supply connection terminal

Connected to analogue 5V lines.

99 OUT L O L Ch. Audio output

100 AVSS1 - A/D converter ground connection terminal Connected to GND lines.

X92-4430-0x X92-4450-0x

MICROCOMPUTER'S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Description Processing Operation

Center

of rotation

Projection

Disc

8cm Disc

Trigger arm

Disc

Trigger arm

Position pushed by the disc

Switch ON!

Disc arm(L)

Disc arm(R)

Disc

Claw (A)

OPERATION DESCRIPTION

[1] Disc Loading

(1) Turning the loading switch ON

1) When a disc is inserted, the disc arms open to the left and right and the claw below disc arm (L) sets the loading switch ON.

2) The above starts the motor rotation.

(2) Loading the disc

1) When the motor starts rotation, the worm gear also starts to turn as shown in the figure.

2) The rotation force is transmitted to the gear train.

3) When the force is transmitted to the final gear, the rollers rotate to pull in the disc.

The disc is pulled in or out when the rollers are pushed against the disc guide.

[2] Operation of Slider (R)

(1) Activating the trigger arm

1) When the disc is pulled in by the rollers, the disc edge pushes the trigger arm and rotates it.

2) When the disc is an 8cm disc, it is pulled upwards by the tapering on the disc guide. The trigger arm is rotated when the disc pushes the claw (section A) located before the trigger arm.

When the 8cm disc reaches the loading end position, the roller areas supporting the disc decreases. To prevent the disc from dropping in this case, the claw is provided with a projection for supporting the disc.

Worm gear Motor

Rubber rollers

Disc IN

Side view

Disc guide

Roller

Disc IN

Disc OUT

Dis

Clamper chassis

X92-4430-0x X92-4450-0x

+ 12 hidden pages