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PORTABLE CD PLAYER
DPC-781/782/981
SERVICE MANUAL
Cover Assy *
(F07-)
Knob
(K29-6787-04)
Knob
(K29-6785-03)
Variable resistor
(R31-0090-05)
Front glass
(B10-2388-04)
Plastic cabinet *
(A02-)
Format
System..............................................................................................................................................................Compact disc digital audio system
Laser ......................................................................................................................................................................................Semiconductor laser
Audio
Frequency response ...........................................................................................................................................................20 Hz ~ 20 kHz, ±3 dB
Headphone output (16 Ω, 1 kHz) .................................................................................................................................................10 mW + 10 mW
(Headphone output level / impedance ..................................................................................................................................max. 450 mV / 2.2 Ω)
[For CHINA and Duty Free Shop in JAPAN]
Digital output optical..............................................................................................................................-21 dBm ~ -15 dBm (wave lenght 660nm)
[For other countries]
LINE output level / impedance.......................................................................................................................................................550 mV / 702 Ω
Power supply
External DC supply ............................................................................................................................................................................DC 4.5 ~ 6 V
Rechargeable batteries ............................................................................................................................................................................DC 2.4 V
Commercially - available alkaline batteries .................................................................................................................................................DC 3 V
Battery life (continuous playback) Repeat playback stops after 16 times.
(Figures inside parentheses are the values when D.A.S.C. is ON.)
Commercially-available alkaline batteries (LR6 / AA) x 4 ....................................................................................................Approx. 40 (34) hours
Commercially-available alkaline batteries (LR6 / AA) x 2 .................................................................................................Approx. 18.5 (17) hours
Rechargeable batteries (NB - 130) x 2...............................................................................................................................Approx. 9.0 (8.0) hours
With 2 commercially-available alkaline batteries and rechargeable batteries...................................................................Approx. 27.5 (25) hours
Dimensions (W x H x D)........................................................................................................................................133.6 mm x 26.5 mm x 151.8 mm
Weight (net) .........................................................................................................................................................................................270 g (9.5 oz.)
1. KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without
notice.
Notes
Notes
2. Sufficient performance may not be exhibited at extremely cold locations (where water freezes.).
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
safety.
Chassis
Knob
(A10-3391-01)
(K29-6783-03)

SPECIFICATIONS

© 1997-10/B51-5379-00 (K/K) 3176
Knob
(K29-6789-04)
* Refer to parts list on page 15.
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
Knob
(K29-6788-03)
Escutcheon *
(B07-)
DC jack
(E03-0355-05)
Ecctric circuit module
(W02-2527-05)
Miniature phone jack *
(E11-)
Miniature phone jack
(E11-0371-05)
Miniature phone jack
(E11-0278-05)

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Table of Contents

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   Summary of Contents for Kenwood DPC-781

  • Page 1: Specifications

    With 2 commercially-available alkaline batteries and rechargeable batteries..............Approx. 27.5 (25) hours Dimensions (W x H x D)............................133.6 mm x 26.5 mm x 151.8 mm Weight (net) ......................................270 g (9.5 oz.) 1. KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Notes Notes 2.
  • Page 2 Stereo headphone (1) Stereo headphone (1) Stereo headphone (1) (W01-0923-05) DPC-981 M type (W01-0946-05) DPC-981 M type (W01-0924-05) DPC-782 DPC-781 M type (W01-0947-05) DPC-981 K,P type DPC-782 X type (W01-0954-05) DPC-981 T,E type Rechargeable battery (2) AC plug adaptor (1)
  • Page 3 DPC-781/782/981 ADJUSTMENT 1. Test Mode 1-1 Setting the test mode This model can be set to the test mode by shorting the test-land of the X32 board. START Turn on lid switch TEST MODE Is test land shorted? Track No. "01"...
  • Page 4 DPC-781/782/981 ADJUSTMENT INPUT OUTPUT PLAYER ALIGNMENT ITEM ALIGN FOR FIG. SETTING SETTING SETTING POINT On the power from Apply the sensor 0.08 to 0.15 mW, Short the test land. Confirm section of optical when the diffraction that the display is LASER –...
  • Page 5 PC BOARD(Component side view) Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 6 PC BOARD(Foil side view) Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 7 PICKUP ASS’Y (T25-0049-05):KMS-542D SPD. MOTOR FCS(+) FOS. COIL SPDL+ FCS(-) SPDL- TRK(+) TRK. COIL TRK(-) SLD. MOTOR SLED- SLED+ SHORT LAND SLTSW 2.9V LMT. SW +2.9V AVR R322 BATT.2.6V ACADP.5.0V BATT.2.3V R321 4.7K R17 10K R218 (X32-348X-XX) 4.7K 15 14 13 12 11 10 R342 4.7K 5.7V...
  • Page 8 U.K. OFF:2.7V 2-71 EUROPE 3.1V value shown in ( ) is the voltage measured at the moment C311 C433 R431 R433 of STOP. 0.01 DPC-781 (X32-348X-XX) REMOTE 4.7u4 P. MODE DESTINATION Q35, SENSOR UNIT No. C311 C312 R315 R341 R345 COUNTRY ABB.
  • Page 9 DPC-781/782/981 EXPLODED VIEW (MECHANISM) AA M2x2.5(BLK) : N09-3425-08 AB M2x8 : N09-3424-08 AC M1.7x1.8 : N39-1718-46 KSM-542DBA Parts with exploded view numbers larger than 700 are not supplied.
  • Page 10 DPC-781/782/981 EXPLODED VIEW (UNIT) NB-130 LINE OPTICAL REMOTE PHONES DC IN (GRN) X32-3480-11 (RED) (GRN) VOLUME P.MODE/ OPEN HOLD SEARCH REPEAT 1.6x4 : N09-2893-05 : N09-3021-05 : N09-3412-05 DPC-781/782/981 Parts with exploded view numbers larger than 700 are not supplied.
  • Page 11 Desti- Ref. No Parts No. Description Ref. No Parts No. Description ress nation marks Parts ress Parts nation marks DPC-781/782/981 H25-0336-04 PROTECTION BAG H25-1588-04 PROTECTION BAG A02-1367-01 PLASTIC CABINET M9T9E9 H50-2682-03 ITEM CARTON CASE K2P2 A02-1367-01 PLASTIC CABINET P1M1 H50-2683-03...
  • Page 12 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 13 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 14 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 15 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 Parts No. Description ress Parts nation marks 2SC4081(R,S) TRANSISTOR DTC124EUA DIGITAL TRANSISTOR...
  • Page 16 P.O BOX 55-2791, Piso 6 plaza Chase, Cl. 47 y Aquilino de la Guardia Panama, Republic de Panama KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB., United Kingdom KENWOOD ELECTRONICS BENELUX N.V. Meachelsesteenweg 418, B-1930 Zaventem, Belgium KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker Str.

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