MZ-E505

6-2. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

• Waveforms

1 IC501 1 (TE)

6 IC501 ed (RF OUT)

qa IC601 th (TE)

Note on Printed Wiring Board:

•X: parts extracted from the component side.

•Y: parts extracted from the conductor side.

• : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)

Caution:

 

Pattern face side:

Parts on the pattern face side seen from

(Conductor Side)

the pattern face are indicated.

Parts face side:

Parts on the parts face side seen from

(Component Side)

the parts face are indicated.

 

 

Note on Schematic Diagram:

•All capacitors are in ∝ F unless otherwise noted. pF: ∝∝ F 50 WV or less are not indicated except for electrolytics and tantalums.

•All resistors are in Ω and 1/4 W or less unless otherwise specified.

•C: panel designation.

•A: B+ Line.

Note: The components identified by mark 0or dotted line with mark 0are critical for safety.

Replace only with part number specified.

200 mV/DIV, 1 ∝ s/DIV

Approx. 760 mVp-p

500 mV/DIV, 500 ns/DIV

200 mV/DIV, 1 ∝ s/DIV

1.0 Vp-p

Approx. 760 mVp-p

•MAIN board is four-layer printed board.

However, the patterns of layers 2 and 3 have not been included in this diagrams.

*Replacement of IC601 used in this set requires a spe- cial tool.

• Lead Layouts

surface

•

Total current is measured with MD installed.

• Power voltage is dc 3 V and fed with regulated dc power

 

supply from external power voltage jack.

• Voltages and waveforms are dc with respect to ground in

 

playback mode (servo circuit ON).

 

no mark : PLAYBACK

 

∗

: Impossible to measure

•

Voltages are taken with a VOM (Input impedance 10 MΩ ).

 

Voltage variations may be noted due to normal produc-

 

tion tolerances.

•

Waveforms are taken with a oscilloscope.

 

Voltage variations may be noted due to normal produc-

 

tion tolerances.

•

Circled numbers refer to waveforms.

•

Signal path.

2IC501 8 (Iy)

100 mV/DIV, 1 ∝ s/DIV

7 IC501 rs (FE)

200 mV/DIV, 1 ∝ s/DIV

200 mVp-p

 

qs IC601 ih (FS4)

 

500 mV/DIV, 2 ∝ s/DIV

Approx.

1.9 Vp-p

620 mVp-p

Lead layout of conventional IC

CSP (chip size package)

E : PLAYBACK

5.68∝ s

* Replacement of IC601 used in this set requires a spe-

cial tool.

• The voltage and waveform of CSP (chip size package)

cannot be measured, because its lead layout is different

form that of conventional IC.

3 IC501 9 (Ix)

8 IC601 wg (OSCO)

100 mV/DIV, 1 ∝ s/DIV

500 mV/DIV, 10 ∝ s/DIV

130 mVp-p

 

 

 

 

 

 

 

 

 

 

 

 

 

22.2 ∝ s

 

4 IC501 q; (Jx)

9 IC601 ej (RFI)

100 mV/DIV, 1 ∝ s/DIV

 

500 mV/DIV, 500 ns/DIV

qd IC901 th (CLK)

 

500 mV/DIV, 2 ∝ s/DIV

2.1 Vp-p

1.9 Vp-p

5.68 ∝

s

150 mVp-p

1.0 Vp-p

 

5IC501 qa (Jy)

100 mV/DIV, 1 ∝ s/DIV

q; IC601 rj (FE)

200 mV/DIV, 1 ∝ s/DIV

180 mVp-p

Approx. 620 mVp-p

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Sony MZ-E505 service manual Waveforms, IC501 ed RF OUT
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MZ-E505 specifications

The Sony MZ-E505 is a portable mini-disc player that emerged in the early 2000s as part of Sony's innovative move towards digital audio solutions. This compact device combines functionality, versatility, and cutting-edge technology, making it a popular choice among music enthusiasts. The MZ-E505 stands out due to its sleek design and impressive features, setting the standard for portable audio players of its time.

One of the main characteristics of the MZ-E505 is its lightweight design, weighing approximately 160 grams. Its portability is complemented by an elegant, user-friendly interface, which includes a simple set of buttons for easy navigation through tracks and folders. The device features a bright LCD display that shows essential information such as track number, time elapsed, and battery life, ensuring users remain informed while on the go.

The MZ-E505's standout feature is its mini-disc technology, allowing users to record and playback high-quality audio. Mini-discs, introduced by Sony in the 1990s, offer an advanced storage solution that can hold up to 74 minutes of high-fidelity stereo sound on the standard format. The player also supports LP2 and LP4 modes, enabling users to double or quadruple the recording capacity, which is perfect for those who require more space for their music collections.

In terms of sound quality, the MZ-E505 utilizes Sony’s ATRAC (Adaptive Transform Acoustic Coding) compression technology, which ensures that audio playback is clear and precise. The device is equipped with a 20-second shock protection mechanism to prevent interruptions during playback, giving users peace of mind while enjoying their favorite tracks during activities like jogging or commuting.

Battery life is another crucial aspect, and the MZ-E505 doesn’t disappoint. It features a rechargeable battery that can provide up to 10 hours of continuous playback on a full charge. Additionally, users have the option to utilize standard AA batteries as an alternative power source.

The MZ-E505 also incorporates a variety of connectivity options, including an analog line-in for direct recording from external sources. This feature was particularly appealing for audiophiles who wanted to create their mix compilations.

Overall, the Sony MZ-E505 is a remarkable blend of portability, sound quality, and innovative technology, representing the quintessential qualities of early digital audio devices. Although the mini-disc format has since been largely superseded by other digital technologies, the MZ-E505 remains a cherished piece of audio history, celebrated for its unique capabilities and breathtaking design.
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