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Kenwood CD-4900M? DPF-J9030 Service Manual

Multiple compact disc player
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MULTIPLE COMPACT DISC PLAYER
CD-4900M/DPF-J9030
SERVICE MANUAL
Knob(TIMER)
(K29-7717-08)
TIMER PLAY
OFF
ON
STANDBY
POWER
ON/STANDBY
Indicator
(B12-0326-04)
Metallic cabinet
(A01-3738-08)
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM
Front glass
Front glass
(B10-3558-08)
(B10-3557-08)
D I S P L AY | B
Dressing panel *
(A21-)
Phono jack
Miniature phone jack
(E63-0120-05)
(E11-0360-05)
OUTPUT
SYSTEM
CONTROL
TEXT
L
R
A
B
S L1 6
TEX T
Miniature phone jack
(E11-0293-05)
• Please refer to the service manual CD-223M/DPF-
J3010/CD-224M/DPF-J5010 (B51-5409-00) if need more
information.
• Refer to CD-2260M/2280M/DPF-J7010/J9010 service manu-
al (B51-5416-00), if you require sub microprocessor (IC3:
X25) in detail.
© 2000-1/B51-5594-00 (K/K) 2738
Front glass
(B10-3559-08)
o PUSH OPEN
)
D I S P L AY | A
D I S C S KI P
B
A
OPERATION
CONFIRM
RANDOM
REPEAT
knob
(K29-7716-08)
Power cord bushing
(J42-0083-05)
DIGITAL
OUT
OPTICAL
AC power cord *
(E30-)
* Refer to parts list on page 26.
^
CONTINUROUS PLAY
&
DISPLAY
$
Panel
(A60-1752-18)
70%

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Table of Contents
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  Summary of Contents for Kenwood CD-4900M? DPF-J9030

  • Page 1 • Refer to CD-2260M/2280M/DPF-J7010/J9010 service manu- al (B51-5416-00), if you require sub microprocessor (IC3: KENWOOD-Crop. certifies this equipment conforms to DHHS X25) in detail. Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J. DANGER : Laser radiation when open and interlock defeated.
  • Page 2 CD-4900M/DPF-J9030 CONTENTS / ACCESSORIES / CAUTIONS Contents CONTENTS / ACCESSORIES / CAUTIONS..... 2 SCHEMATIC DIAGRAM .......... 13 CIRCUIT DESCRIPTION ..........3 EXPLODED VIEW ............24 ADJUSTMENT ............8 PARTS LIST..............26 PC BOARD ..............9 SPECIFICATIONS ........Back cover Accessories Audio cord ....... (2) System control cord ..(1) Communication cord ..
  • Page 3: Circuit Description

    CD-4900M/DPF-J9030 CIRCUIT DESCRIPTION 1. Main microprocessor : uPD784217GF502 (X32, IC8) 1-1 Microprocessor periphery block diagram X32,IC2 X32,IC8 CD MECHA CXD2587Q CLOCK 35 CLOK S1 SW 7 S1 SW CDM-31 (DSP) XLAT 36 XLAT S2 SW 4 S2 SW DATA 44 DATA S3 SW 3 S3 SW SCLK...
  • Page 4 CD-4900M/DPF-J9030 CIRCUIT DESCRIPTION 1-2 Microprocessor pin description (X32, IC8): UPD784217GF502 Pin No. Pin Name Description Address bus of SRAM. No connection. S3-SW Mechanism address detector switch. S2-SW Mechanism address detector switch. SRAM read strobe. SRAM write strobe S1-SW Mechanism address detector switch. ASTB No connection.
  • Page 5 CD-4900M/DPF-J9030 CIRCUIT DESCRIPTION Pin No. Pin Name Description JOG1 Encoder signal B input. DOOR-SW Door open/close detector switch. LOAD-SW2 Load switch2 for sub pickup. UNLOAD-SW2 Unload switch2 for sub pickup. DISC-SW2 Disc2 sensor. GND. LOADM-2 Load motor(-) for sub pickup. LOADM+2 Load motor(+) for sub pickup.
  • Page 6 CD-4900M/DPF-J9030 CIRCUIT DESCRIPTION 2. Test mode INPUT KEY PROCEDURE DISPLAY Insert the AC plug to INITIAL CONDITION MECHA. INITIAL the wall outlet with • Disc No.1 moves to the center. INITIAL OK!! pressing the SKIP- • Clear the memory of the SRAM. DOWN key.
  • Page 7 CD-4900M/DPF-J9030 CIRCUIT DESCRIPTION 3. Error code DISPLAY ERROR CONTENTS MECHA ERROR 01 No input of S3. The original position error of Disc Number. MECHA ERROR 02 No input of S2. The turning direction error to counterclockwise. MECHA ERROR 03 No input of S1. The turning direction error to clockwise. MECHA ERROR 04 No input of main load sw.
  • Page 8: Adjustment

    CD-4900M/DPF-J9030 ADJUSTMENT INPUT OUTPUT PLAYER ALIGNMENT ITEM ALIGN FOR FIG. SETTING SETTING SETTING POINT 1. With pressing the REPEAT KEY, turn the power on to enter the test mode. 2. Set the Test disc to Disc NO. 1. 3. Close the door. Connect an oscillo- Press the PLAY FE BIAS...
  • Page 9: Pc Board

    PC BOARD (Component side view) SUB-CIRCUIT UNIT X25-6060-12 Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 10 PC BOARD (Component side view) CD PLAYER UNIT X32-3502-74 A/8 R180 +7.5V SLT-SW R144 C156 R100 DOUT R141 R101 R140 W139 W140 C102 C101 +5V-SRAM R102 +7.5V SCOR RESET -40V +7.5V W100 W101 W103 STB2 R205 W105 SQSI W112 SQCK W114 W115 W117...
  • Page 11 PC BOARD(Component side view) CD PLAYER UNIT X32 F/8 OUTPUT SYSTEM SL16 TEXT CONTROL X32-3500-10 B/8 S G D X32 E/8 R202 R197 R195 R176 R199 R174 R198 R196 R177 R137 R200 R173 R178 R138 R201 R175 X32 G/8 X32 H/8 OPTICAL POWER X32 C/8...
  • Page 12 (X32-3502-74) (A/8) 10 9 ROTALY SW ROTALY M+ ROTALY M- +7.5V +7.5V +7.5V SENSOR PCB 5.0V ROTARY 160K IC13 +5PUL IC12 5.0V MOTOR 220u10 5.0V 1/4W DRIVER LOADING 4.9V 2.0V 4.9V MOTOR DISC-SW +7.5V DRIVER OUT1 10u50 (2/2) DISC 7.5V (1/2) DETECTOR S1-SW...
  • Page 13 CAUTION: For continued safety, replace safety critical com- ponents only with manufacturer's recommended parts (refer (X32-3502-74) (A/8) to parts list). indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall C57 1F5.5 4.9V...
  • Page 14 X32-A/8 (X25-6060-12) DIGITAL LINE -CN11 SIGNAL LINE IC1 : CXA1571M GND LINE IC2 : CXD2587Q B LINE IC3 : uPD780023GC512 (X25-6060-12) B LINE IC4 : TA8409S 10 9 9 10 11 IC5 : BA5979S : 2SA954(L,K) X32-A/8 LOADING -CN15 MOTOR D1,2 : HSS104 or DRIVER 1SS133...
  • Page 15 (X25-6060-12) (X32- ) (F/8) +7.5V SWITCHING POWER SUPPLY 7.6V 100uH 18.2V +7.5V 17.8V CAUTION: For continued safety, replace safety critical com- ponents only with manufacturer's recommended parts (refer to parts list). indicates safety critical components. For 4.9V continued protection against risk of fire, replace only with CN12 6.8V R53 47K...
  • Page 16 (X32-3502-74) (D/8) (X32- ) (C/8) C126 R191 C142 R194 220P 100Kx12 220P 100Kx15 C125 R190 W404-414 C141 R193 220P 220P C124 R189 C140 R192 220P 220P -15.2V -15.3V VLOAD -24.7V VLOAD -27.0V P12 P13 P14 P15 -19.8V -19.8V -31.8V -34.2V -22.2V P16 P17 P18 P19 P20 -22.2V...
  • Page 17 (X32- ) (C/8) IC14,15 : uPD780204-038 Q5,6 : 2SC3246(J,K) D13-15 : B30-2493-05 (WIRE CLAMPER) D16-19,36,37 : B30-2532-05 CAUTION: For continued safety, replace safety criti- cal components only with manufacturer's recommend- ed parts (refer to parts list). indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s).
  • Page 18: Exploded View

    CD-4900M/DPF-J9030 EXPLODED VIEW (MECHANISM) 2x25 : N39-2025-46 Parts with exploded numbers larger than 700 are not supplied.
  • Page 19 The left screen parts and the right are one and the same if no ref number. 2.6x8 : N09-2769-05 M2x4 : N83-2004-45 3x6(BLK) : N09-1445-05 Push rivet : N29-0035-05 2.6x8 : N82-2608-46 M2x2.5 : N39-2025-46 857A : N30-3003-46 : N89-3006-46 M3x3 3x8(BLK) E-RING...
  • Page 20 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 21 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 22 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 23 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
  • Page 24 New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Add- Desti- Ref. No Description Parts No. Parts nation marks ress J21-6571-08 PLATE SLIDER A J21-6575-08 PLATE SUPPORT B...

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Cd-4900m