Kenwood DMC-G7R Service Manual

POTABLE MD RECORDER
DMC-G7R
SERVICE MANUAL
Decoration plate
(B07-2372-08)
Top cover
(F07-0798-08): S
(F07-0799-08): B
S: SILVER, B: BLUE
System .........................................................MiniDisc digital audio system
Read method ...Noncontact optical reading system (semiconductor laser)
Rotating speed ..........................................................About 400 - 900 rpm
Sampling frequency..............44.1 kHz (32 kHz and 48 kHz are converted
to 44.1 kHz and recorded)
Audio compression...........ATRAC (Adaptive Transform Acoustic Coding)
Number of channels ...................................................Stereo : 2 Channels
Recording method.........................Magnetic modulation overwrite system
Error correction method ...................................................AC / RC method
Frequency response.......................................20 Hz to 20,000 Hz (±3 dB)
Wow & flutter .............Less than unmeasurable limit (±0.001 % W.PEAK)
Input jack........................Line/optical combined input x 1; microphone x 1
(plug-in power type)
Output jack ..............................Headphone/remote control combined jack
Input sensitivity : MIC H .....................................................0.25 mV/10 kΩ
MIC L........................................................2.5 mV/10 kΩ
LINE ........................................................100 mV/20 kΩ
Output level : phones.....10 mW + 10 mW (Maximum output level/at 16Ω)
LINE ..................350 mV (at -12dB, standard output/50 kΩ)
Power source...DC 5 V : AC adaptor (AC 120 V, 50/60 HZ)
DC 3.6 V : Lithium ion battery x 1
DC 5 V : Car battery adaptor (sold separately, DC-C50)
DC 4.5 V : Dry batteries case (sold separately, BC-F5)
1. KENWOOD follows a policy of continuous advancements in development, For reason specifications may be changed without notice.
Notes Notes
2. The full performance may not be exhibited in an extremely cold location (under a water-freezing temperature).
In compliance with Federal Regulations, following are reproduc-
tions of labels on, or inside the product relating to laser product
safety.
Knob (PLAY/PAUSE)
(K27-2229-08)
Cover
(F07-1624-08)

SPECIFICATIONS

Monaural Extended mode : 1 channel
© 1997-7/B51-5335-00 (K/K) 2740
Knob (STOP)
(K27-2231-08)
Knob (REC)
(K27-2227-08)
Front cabinet
(A02-1357-08): S
(A02-1358-08): B
Knob (EJECT)
(K27-2232-08)
Battery life ..................................................................................................
(fully charged batteries)
Type of battery
Rechargeable battery only Approx. 9.5 hours Approx. 7 hours
Alkaline batteries
Rechargeable battery +
Alkaline batteries
(Continuous recording time : based on analog input and recording
monitor volume level of "0"
(Continuous playback time : based on volume level of "VOL 20")
• Time of use may vary depending on battery maker, batter type,
use environment, and temperature.
Dimensions (W) x (H) x (D) ....................109.2 mm x 29.8 mm x 81.3 mm
Weight (Net) .................Approx. 270 g (0.59 lb)
Including the accessory rechargeable battery
Approx. 222g (0.49 lb)
not including the accessory rechargeable battery
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Knob (EDIT MODE)
(K27-2230-08)
Continuous Continuous
playback time recording time
Approx. 24 hours Approx. 17 hours
Approx. 35 hours Approx. 25 hours
(4-5/16" x 1-3/16" x 3-3/16")