Sharp md mt 20

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MD-MT20/20C/20W Ð 2 Ð Figure 2-1 Figure 2-2 Precaution to be taken when replacing and servicing the Laser Pickup. The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the laser beam. (1) When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens. (2) The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping. (3) No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup. (4) Under no circumstances look directly into the Pickup Lens at any time. (5) CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure. SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT20W ONLY) VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina nŠkymŠttšmŠlle lasersŠteilylle. -��lŠ katso sŠteeseen. VARNING! Osynlig laserstralning nŠr denna del Šr šppnad och spŠrren Šr urkopplad. Betrakta ej strŠlen. Precaution to be taken when replacing and servicing the laser pickup. The following precautions must be observed during servicing to protect your eyes against exposure to the laser. Warning of possible eye damage when repairing: If the AC adaptor or batteries are connected when the top houising (disc cover) of the unit is removed, and the PLAY key is pressed, the laser will light up during focus access (2-3 seconds). (Fig. 2-1) During the operation, the laser will leak from the opening between the magnetic head and the mechanical chassis (Fig. 2-2). In order to protect your eyes, you must not look at the laser during repair. Before repairing be sure to disconnect the AC adaptor and remove the batteries. Magnet head Optical pick-upTop Cabinet CAUTION Laser Diode Properties Material: GaAIAs Wavelength: 785 nm Pulse time: Read mode; 0.8 mW Continuous Write mode; max. 10 mW 0.5S min. cycle 1.5S Repetition This Portable MiniDisc Recorder is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the bottom. Use the Portable MiniDisc Recorder only in accordance with the instructions given in this manual and do not attempt to interfere with the interlock switch or make any other adjustment as this may result in exposure to hazardous radiation. Magnet Head Laser Beam Optical Pick-Up Main PWB Spindle motor Mechanism Chassis

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MD-MT20/20C/20W Ð 2 Ð Figure 2-1 Figure 2-2 Precaution to be taken when replacing and servicing the Laser Pickup. The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements. However, the following precautions must be observed during servicing to protect your eyes against exposure to the laser beam. (1) When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens. (2) The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping. (3) No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup. (4) Under no circumstances look directly into the Pickup Lens at any time. (5) CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure. SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT20W ONLY) VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina nŠkymŠttšmŠlle lasersŠteilylle. -��lŠ katso sŠteeseen. VARNING! Osynlig laserstralning nŠr denna del Šr šppnad och spŠrren Šr urkopplad. Betrakta ej strŠlen. Precaution to be taken when replacing and servicing the laser pickup. The following precautions must be observed during servicing to protect your eyes against exposure to the laser. Warning of possible eye damage when repairing: If the AC adaptor or batteries are connected when the top houising (disc cover) of the unit is removed, and the PLAY key is pressed, the laser will light up during focus access (2-3 seconds). (Fig. 2-1) During the operation, the laser will leak from the opening between the magnetic head and the mechanical chassis (Fig. 2-2). In order to protect your eyes, you must not look at the laser during repair. Before repairing be sure to disconnect the AC adaptor and remove the batteries. Magnet head Optical pick-upTop Cabinet CAUTION Laser Diode Properties Material: GaAIAs Wavelength: 785 nm Pulse time: Read mode; 0.8 mW Continuous Write mode; max. 10 mW 0.5S min. cycle 1.5S Repetition This Portable MiniDisc Recorder is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the bottom. Use the Portable MiniDisc Recorder only in accordance with the instructions given in this manual and do not attempt to interfere with the interlock switch or make any other adjustment as this may result in exposure to hazardous radiation. Magnet Head Laser Beam Optical Pick-Up Main PWB Spindle motor Mechanism Chassis

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MD-MT20/20C/20W Ð 3 Ð FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS Specifications for this model are subject to change without prior notice General Power source:DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD- T20BT) x 1 DC 5V: AC adaptor (AC 110 - 240V, 50/60 Hz) DC 3.0V: Commercially available, AA size (LR6), alkaline battery x 2 DC 4.5V: Separately available car adaptor, AD-CA20X (for cars with a 12-24V DC negative earth electri- cal system) Power consumption:0.15A (AC adaptor) Output power:RMS; 20 mW (10 mW + 10 mW) (0.2% T.H.D.) Charging time:Approx. 4 hours (90 %) Approx. 6 hours (fully charged) (When using the AC adaptor included with the unit) Battery life: When using the rechargeable battery (fully charged) included with the unitWhen using two, commercially available, high capacity, AA size (LR6), alkaline batteries Continuous recording: Approx. 7.5 hoursContinuous recording: Approx. 7.5 hours Continuous play: Approx. 12 hoursContinuous play: Approx. 15 hours Unmeasurable (less than ±0.001% W. peak) The continuous recording time is for analogue inputs when the volume level is set to VOL 0. The continuous play time shows the value when the volume level is set to VOL 15. The above values are the standard values when the unit is charged and used at an ambient temperature of 20°C (68°F). The operating time when using an alkaline batteries may be different, depending on the type and manufacturer of the battery, and on the operating temperature. Input sensitivity: Recording level Reference input level Input impedance MIC H 0.25 mV 10 k ohms MIC L 2.5 mV 10 k ohms LINE 100 mV 20 k ohms Output level: Specified outputMaximum output levelLoad impedance Earphones - 10 mW + 10 mW 32 ohms LINE250 mV (-12dB)- 10 k ohms Dimensions:Width: 87.9 mm (3-7/16") Height: 29.8 mm (1-3/16") Depth: 79.7 mm (3-1/8") Weight:235 g (0.52 lbs.) with rechargeable battery Input socket:Line/optical digital, microphone (powered by the main unit) Output socket:Earphones (impedance: 32 ohms)/remote control unit MiniDisc Recorder Type:Portable MiniDisc recorder Signal readout:Non-contact, 3-beam semi-conductor laser pick-up Audio channels:Stereo 2 channels/monaural (long-play mode) 1 channel Frequency response:20 -� 20,000 Hz (± 3 dB) Rotation speed:Approx. 400 -� 900 rpm Error correction:ACIRC (Advanced Cross Interleave Reed-Solomon Code) Coding:ATRAC (Adaptive Transform Acoustic Coding), 24-bit com- puted 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: nGeneral Power source:DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD- T20BT) x 1 DC 5V: AC adaptor (AC 120V, 60 Hz) DC 3.0V: Commercially available, AA size (LR6), alkaline battery x 2 DC 4.5V: Separately available car adaptor, AD-CA20X (for cars with a 12-24V DC negative ground elec- trical system) Power consumption:7.5W(AC adaptor) Output power:RMS; 20 mW (10 mW + 10 mW) (0.2% T.H.D.) Charging time:Approx. 4 hours (90 %) Approx. 6 hours (fully charged) (When using the AC adaptor included with the unit) Battery life: When using the rechargeable battery (fully charged) included with the unitWhen using two, commercially available, high capacity, AA size (LR6), alkaline batteries Continuous recording: Approx. 7.5 hoursContinuous recording: Approx. 7.5 hours Continuous play: Approx. 12 hoursContinuous play: Approx. 15 hours Unmeasurable (less than ±0.001% W. peak) lThe continuous recording time is for analog inputs when the volume level is set to VOL 0. lThe continuous play time shows the value when the volume level is set to VOL 15. lThe above values are the standard values when the unit is charged and used at an ambient temperature of 68°F (20°C). lThe operating time when using an alkaline battery may be different, depending on the type and manufacturer of the battery, and on the operating temperature. Input sensitivity: Recording level Reference input level Input impedance MIC H 0.25 mV 10 k ohms MIC L 2.5 mV 10 k ohms LINE 100 mV 20 k ohms Output level: Specified outputMaximum output levelLoad impedance Headphones - 10 mW + 10 mW 16 ohms LINE250 mV (-12dB)- 10 k ohms Dimensions:Width: 3-7/16" (87.9 mm) Height: 1-3/16" (29.8 mm) Depth: 3-1/8" (79.7 mm) Weight:0.52 lbs. (235 g) with rechargeable battery Input jack:Line/optical digital, microphone (powered by the main unit) Output jack:Headphones (impedance: 19 ohms)/remote control unit nMiniDisc Recorder Type:Portable MiniDisc recorder Signal readout:Non-contact, 3-beam semi-conductor laser pick-up Audio channels:Stereo 2 channels/monaural (long-play mode) 1 channel Frequency response:20 -� 20,000 Hz (± 3 dB) Rotation speed:Approx. 400 -� 900 rpm Error correction:ACIRC (Advanced Cross Interleave Reed-Solomon Code) Coding:ATRAC (Adaptive Transform Acoustic Coding), 24-bit com- puted 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: MD-MT20/20C MD-MT20W

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MD-MT20/20C/20W Ð 3 Ð FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS Specifications for this model are subject to change without prior notice General Power source:DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD- T20BT) x 1 DC 5V: AC adaptor (AC 110 - 240V, 50/60 Hz) DC 3.0V: Commercially available, AA size (LR6), alkaline battery x 2 DC 4.5V: Separately available car adaptor, AD-CA20X (for cars with a 12-24V DC negative earth electri- cal system) Power consumption:0.15A (AC adaptor) Output power:RMS; 20 mW (10 mW + 10 mW) (0.2% T.H.D.) Charging time:Approx. 4 hours (90 %) Approx. 6 hours (fully charged) (When using the AC adaptor included with the unit) Battery life: When using the rechargeable battery (fully charged) included with the unitWhen using two, commercially available, high capacity, AA size (LR6), alkaline batteries Continuous recording: Approx. 7.5 hoursContinuous recording: Approx. 7.5 hours Continuous play: Approx. 12 hoursContinuous play: Approx. 15 hours Unmeasurable (less than ±0.001% W. peak) The continuous recording time is for analogue inputs when the volume level is set to VOL 0. The continuous play time shows the value when the volume level is set to VOL 15. The above values are the standard values when the unit is charged and used at an ambient temperature of 20°C (68°F). The operating time when using an alkaline batteries may be different, depending on the type and manufacturer of the battery, and on the operating temperature. Input sensitivity: Recording level Reference input level Input impedance MIC H 0.25 mV 10 k ohms MIC L 2.5 mV 10 k ohms LINE 100 mV 20 k ohms Output level: Specified outputMaximum output levelLoad impedance Earphones - 10 mW + 10 mW 32 ohms LINE250 mV (-12dB)- 10 k ohms Dimensions:Width: 87.9 mm (3-7/16") Height: 29.8 mm (1-3/16") Depth: 79.7 mm (3-1/8") Weight:235 g (0.52 lbs.) with rechargeable battery Input socket:Line/optical digital, microphone (powered by the main unit) Output socket:Earphones (impedance: 32 ohms)/remote control unit MiniDisc Recorder Type:Portable MiniDisc recorder Signal readout:Non-contact, 3-beam semi-conductor laser pick-up Audio channels:Stereo 2 channels/monaural (long-play mode) 1 channel Frequency response:20 -� 20,000 Hz (± 3 dB) Rotation speed:Approx. 400 -� 900 rpm Error correction:ACIRC (Advanced Cross Interleave Reed-Solomon Code) Coding:ATRAC (Adaptive Transform Acoustic Coding), 24-bit com- puted 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: nGeneral Power source:DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD- T20BT) x 1 DC 5V: AC adaptor (AC 120V, 60 Hz) DC 3.0V: Commercially available, AA size (LR6), alkaline battery x 2 DC 4.5V: Separately available car adaptor, AD-CA20X (for cars with a 12-24V DC negative ground elec- trical system) Power consumption:7.5W(AC adaptor) Output power:RMS; 20 mW (10 mW + 10 mW) (0.2% T.H.D.) Charging time:Approx. 4 hours (90 %) Approx. 6 hours (fully charged) (When using the AC adaptor included with the unit) Battery life: When using the rechargeable battery (fully charged) included with the unitWhen using two, commercially available, high capacity, AA size (LR6), alkaline batteries Continuous recording: Approx. 7.5 hoursContinuous recording: Approx. 7.5 hours Continuous play: Approx. 12 hoursContinuous play: Approx. 15 hours Unmeasurable (less than ±0.001% W. peak) lThe continuous recording time is for analog inputs when the volume level is set to VOL 0. lThe continuous play time shows the value when the volume level is set to VOL 15. lThe above values are the standard values when the unit is charged and used at an ambient temperature of 68°F (20°C). lThe operating time when using an alkaline battery may be different, depending on the type and manufacturer of the battery, and on the operating temperature. Input sensitivity: Recording level Reference input level Input impedance MIC H 0.25 mV 10 k ohms MIC L 2.5 mV 10 k ohms LINE 100 mV 20 k ohms Output level: Specified outputMaximum output levelLoad impedance Headphones - 10 mW + 10 mW 16 ohms LINE250 mV (-12dB)- 10 k ohms Dimensions:Width: 3-7/16" (87.9 mm) Height: 1-3/16" (29.8 mm) Depth: 3-1/8" (79.7 mm) Weight:0.52 lbs. (235 g) with rechargeable battery Input jack:Line/optical digital, microphone (powered by the main unit) Output jack:Headphones (impedance: 19 ohms)/remote control unit nMiniDisc Recorder Type:Portable MiniDisc recorder Signal readout:Non-contact, 3-beam semi-conductor laser pick-up Audio channels:Stereo 2 channels/monaural (long-play mode) 1 channel Frequency response:20 -� 20,000 Hz (± 3 dB) Rotation speed:Approx. 400 -� 900 rpm Error correction:ACIRC (Advanced Cross Interleave Reed-Solomon Code) Coding:ATRAC (Adaptive Transform Acoustic Coding), 24-bit com- puted 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: MD-MT20/20C MD-MT20W