Panasonic SJ-MR230DGK specifications Handling the optical magnetism head unit

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3.Operating Instructions

4.Handling Precautions for Optical Magnetism Head Unit

The laser diode in the optical magnetism head unit may break down due to potential difference caused by static electricity of clothes or human body.

So, be careful of electrostatic breakdown during repair of the optical magnetism head unit.

4.1. Handling the optical magnetism head unit

1.The optical magnetism head unit is an extremely high-precision construction and must not be subjected to impact, excessive vibration, or other types of rough handling.

2.In order to prevent static electricity damage to the laser diode, use a short pin or similar tool to short the optical pickup’s flexible circuit boards after they have been disconnected from the main circuit board. (as shown in Fig. 1 )

3.Handle the flexible circuit boards with care; excessive force could cause them to be broken.

4.Do not turn the pre-set variable resistor (for adjustment of the laser power); it has been adjusted at the factory.

(as shown in Fig. 2 )

Fig. 1

Fig. 2

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Contents Blue Type Portable MD RecorderColours Atrac / ATRAC3 RFKFFAZ01EM1 AccessoriesPrecation of Laser Diode Handling the optical magnetism head unit Grounding for electrostatic breakdown prevention Checking for the main P.C.B Operation Checks and Component Replacement ProceduresCheck the main P.C.B. a side as shown below Replacement for the open knob Replacement for the traverse motor Follow the of item Page Replacement for the LCD Page Replacement for the lift motor Page Page Instruments to prepare Measurements and AdjsutmentsEnter the adjustment mode About handling the optical pickup and the magnetic head Page Off-set automatic adjustment Magneto-optical disc automatically adjustment Checking the main units keys Play Stop FOW REV Hold OFF REC VOL+ Mark ModeOverall Flow Chart Troubleshooting GuidePlay VOLPage Confirmation of main unit and cradle Page Flow Chat of Each Part Page Page Page Page Page Page Page Display of Self-Diagnostic Function Schemtic Diagram Notes Schematic Diagram NotesType Illustration of ICs, Transistors and Diodes Impedance of the DC circuit tester15.1. IC1 AN22010A-VF RF AMP Wiring Connection Diagram Terminal Function of ICsFF1 FF2Adip NrecApcd TS0Refm SpdmSTPO1 TvdpSbck STPO2Ssdr SctsySsdw SsckPefms AVSS1PEFM1 EfmfilRAD0 DVDD2RDT3 IVDD1Sthb StallSP VM1 SP UBRK+ CSL2BRK Asgnd15.4. IC501 C2DBKJ000062 System Control Avrefo ResetAvdd AvssDoctor KeywakeMreq MrstMicdet InselMIC/LINE EfmonRfcnt HFON1STBY2 MsprstWakeup OpenswCfsync ANI11 GNDReplacement Parts List Screw SWITCHS501 Page ECUE1C223KBQ RCST0JY226RG JACK,HEADPHONE DTC144EETL Transistor B1GBCFNN0001 ERJ2GED513X Cabinet Parts Location Packaging Schematic Diagram for printing with A4

SJ-MR230DGK specifications

The Panasonic SJ-MR230DGK is an innovative and versatile portable audio solution that offers a unique blend of style, functionality, and cutting-edge technology. Designed for music enthusiasts, this device delivers high-quality sound and is packed with features that cater to both casual listeners and audiophiles alike.

One of the standout features of the SJ-MR230DGK is its compact and lightweight design, making it easy to carry and perfect for on-the-go use. It fits comfortably in your bag or even in your pocket, allowing you to take your favorite tunes with you wherever you go. The sleek aesthetic of the device adds a modern touch, ensuring that it not only sounds great but looks good too.

In terms of sound quality, the SJ-MR230DGK employs advanced audio technologies that are designed to enhance the listening experience. With a high-fidelity audio output, users can enjoy rich bass, clear mids, and crisp highs, while the customizable equalizer settings allow for personalization according to individual preferences. This feature makes it an excellent choice for varying music genres, ensuring that each note is delivered with precision and depth.

Moreover, the device supports a wide array of audio formats, making it compatible with various audio sources, including MP3, WMA, and AAC files. This versatility ensures that users can enjoy their music collections without limitations, whether stored on a computer, smartphone, or other digital audio players.

Another notable aspect of the SJ-MR230DGK is its long-lasting battery life. Designed to provide hours of continuous playback, it is ideal for extended listening sessions, whether at home, during commutes, or while traveling. The quick recharge feature also ensures that users spend less time waiting for their device to charge and more time enjoying their favorite music.

Connectivity options abound with the SJ-MR230DGK, featuring Bluetooth technology that enables wireless streaming from smartphones, tablets, and other compatible devices. This eliminates the hassle of tangled wires and promotes a seamless audio experience. Additionally, user-friendly controls make it easy to navigate through playlists and adjust volume levels, ensuring a hassle-free listening experience.

In summary, the Panasonic SJ-MR230DGK is a remarkable portable audio device that stands out due to its robust sound quality, extensive features, and stylish design. Its combination of portability, advanced audio technologies, and ease of use makes it an excellent choice for anyone looking to elevate their music listening experience. Whether you’re at home or on the move, the SJ-MR230DGK promises to deliver a captivating auditory experience that will resonate with music lovers everywhere.
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