Kenwood DPC-781 Service Manual

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)