Panasonic SJ-MJ88 manual Schematic Diagram Notes

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8.2. Schematic Diagram Notes

This schematic diagram may be modified at any time with the development of new technology.

Notes:

: Volume control switch (+)

S201

: volume control switch (-)

S202

: Skip/search switch ()

S203

: Skip/search switch ()

S204

: Play/stop switch ()

S206

: Cover open/close det. switch

S207

: Hold switch in “OFF” position. (HOLD)

S208

-Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as

standard. Therefore, there may exist some errors in the voltage values, depending on theinternal impedance of the DC circuit tester.

No mark: MD STOP

( ): MD play [1kHz, L+R, 0dB]

Important safety notice:

Components identified by mark have special characteristics important for safety.

Furthermore, special parts which have purpose of fire-retardant (resistors), high- quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only manufacture's specified parts shown in theparts list.

Caution!

IC and LSI are sensitive to static electricity.

Secondary trouble can be prevented by taking care during repair. Cover the parts boxes made of plastics with aluminum foil. Ground the soldering iron.

Put a conductive mat on the work table.

Do not touch the legs of IC or LSI with the fingers directly.

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Contents Portable MD Player Specifications Accessories Precaution of Laser Diode Handling the traverse deck optical pickup Grounding for electrostatic breakdown prevention Page Operation Checks and Component Replacement Procedures Page Check the P.C.B. as shown below Follow the of item Page Page Page Page Replacement for the traverse motor Page Page Page Replacement for the optical pickup Page Page Page Page Measurements and Adjustments Enter the adjustment mode T2E T0ET1E T3EAdjustment Procedure Reference Page Off-set automatic adjustment Checking the main units keys Hold OFF VOL+VOL OFFPage Page Page Page Page Page Page Schematic Diagram Notes Schematic Diagram Notes 12.1. IC1 AN86772FHKEBV RF AMP Apcpd LDOLdin ArfoRfswpg AdipRfswhl GND2LON RvddDram TmdisyFodm RvssFodp SpdpAvdd Btom BAT Gairan MON3T VrefiFF2 FF1Batt REMKEY VREF+RST SsclkBuzzer CfsyncLED PowerCHK JitterSTBY2 BattchkMSP IN2R IN1RIN2F StallSpwin SpuinSpvin SpcomSLPG1 SLVM2Slvout SluoutH1FOUT H1PG1IN1F Replacement Parts List Screw Stopper Rubber ECUENC333KBQ PCB1 Cabinet Parts Location Packaging

SJ-MJ88 specifications

The Panasonic SJ-MJ88 is a portable mini disc player renowned for its compact design and impressive audio quality. Launched in the late 1990s, this device epitomized the transition in portable music technology from cassette tapes and CD players to the digital format of MiniDiscs. The SJ-MJ88 supports various audio formats, making it a versatile choice for music enthusiasts.

One of the standout features of the SJ-MJ88 is its ability to provide near-CD quality sound through the MiniDisc format. This was made possible by its ATRAC (Adaptive Transform Acoustic Coding) compression technology, which retains a significant amount of audio fidelity even though the files are compressed. Users appreciated the ability to record and create customized playlists, allowing for an engaging listening experience.

The SJ-MJ88 is compact and lightweight, designed for portability. It features a sleek, ergonomic body that fits easily into bags and pockets, making it an excellent companion for on-the-go music lovers. Despite its small size, the device was equipped with a robust rechargeable battery that offered long hours of playback time, a crucial factor when traveling.

Another compelling characteristic of the SJ-MJ88 is its user-friendly interface. The device is designed with intuitive buttons and a clear display, allowing users to navigate through tracks effortlessly. The inclusion of features like digital pitch control and a programmable memory further enhanced user interaction, providing customization options for the listening experience.

Additionally, the SJ-MJ88 included a solid set of digital editing tools, enabling users to edit their music on the track level, making it easy to rearrange songs or create unique mixes. This flexibility set it apart from its contemporaries and made it appealing to DJs and music producers.

Overall, the Panasonic SJ-MJ88 remains a memorable device within the history of personal audio technology, combining portability, quality sound, and user-friendly features into a compact mini disc player. Its legacy continues to be appreciated by loyal fans and collectors looking for a bridge between analog and digital music experiences, illustrating the innovation that Panasonic brought to the audio market during its time.
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