Sharp MD-MT877, Service Manual

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MD-MT877/MD-MT877C
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO
THE OPERATION MANUAL.
Specifications for this model are subject to change without prior
notice
SPECIFICATIONS
Power source DC 1.2V: Rechargeable Nickel-Metal Hydride battery (AD-N55BT) x 1
DC 5V: AC adaptor (AC 120V, 60 Hz)
DC 1.5V: Commercially available, “AA” size (LR6), alkaline battery x 1
DC 1.5V: Separately available car adaptor, AD-CA55X (for cars with a 12-24V DC negative ground electrical sys-
tem) (Used with separately available plug adaptor (AD-M66PA))
Power consumption 7 W (AC adaptor)
Output power RMS; 10 mW (5 mW + 5 mW) (0.2% T.H.D.)
Charging time Approx. 3.5 hours
Input sensitivity MIC H: reference input level 0.25 mV input impedance 10 k ohms
MIC L: reference input level 2.5 mV input impedance 10 k ohms
LINE: reference input level 100 mV input impedance 20 k ohms
Output level Earphones: maximum output level 5 mW + 5 mW load impedance 32 ohms
LINE: specified output 250 mV (-12 dB) load impedance 10 k ohms
Dimensions Width: 2-27/32” (71.9 mm) Height: 11/16” (16.8 mm) Depth: 3-1/8” (78.7 mm)
Weight 0.29 lbs. (131 g) with rechargeable battery
Input jack Line/optical digital, microphone (powered by the main unit)
Output jack Earphones (impedance: 32 ohms)/remote control unit
Type Portable MiniDisc recorder
Signal readout Non-contact, 3-beam semiconductor laser pickup
Audio channels Stereo 2 channels/monaural (long-play mode) 1 channel
Frequency response 20 – 20,000 Hz (
±
3 dB)
Rotation speed Approx. 400 – 1,350 rpm
Error correction ACIRC (Advanced Cross Interleave Reed-Solomon Code)
Coding ATRAC/ATRAC3 (Adaptive TRansform Acoustic Coding), 24-bit computed type
Recording method Magnetic modulation overwrite method
Sampling frequency 44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz, and then recorded.)
Wow and flutter Unmeasurable (less than
±
0.001% W. peak)
Battery life
●
The above values are the standard values when the unit is operated hori-
zontally and charged at an ambient temperature of 77
°
F (25
°
C). (The
operable duration with the rechargeable battery will be shorter when the
unit is carried around.)
●
The volume level is set at “VOL 15”.
●
The LED is set at “LIGHT OFF”.
●
Operable duration with a commercially available battery varies depend-
ing on its maker, type, and conditions of use.
●
“Fully charged” means that the charging is complete after approximately
3.5 hours since the remaining amount of the battery is reduced to “
”
(1 bar).
When using the rechargeable battery
(fully charged) included with the unit
When using one, commercially avail-
able, high capacity, “AA” size (LR6), al-
kaline battery (The rechargeable bat-
tery is in the unit, discharged.)
When using one, commercially avail-
able, high capacity, “AA” size (LR6), al-
kaline battery with the rechargeable bat-
tery (fully charged)
Stereo 2 times long 4 times long
Continuous Continuous Continuous Continuous Continuous Continuous
recording: play: recording: play: recording: play:
Approx. Approx. Approx. Approx. Approx. Approx.
6.5 hours 12 hours 9 hours 13.5 hours 11.5 hours 15 hours
Continuous Continuous Continuous Continuous Continuous Continuous
recording: play: recording: play: recording: play:
Approx. Approx. Approx. Approx. Approx. Approx.
6 hours 16 hours 10 hours 19.5 hours 13 hours 22 hours
Continuous Continuous Continuous Continuous Continuous Continuous
recording: play: recording: play: recording: play:
Approx. Approx. Approx. Approx. Approx. Approx.
15 hours 29 hours 22 hours 33 hours 30 hours 40 hours