Sony MZ-R700 Open Close SW, Gnd Sw, SET CODE0, SET CODE2, SET CODE3, MIFVSS1, SI0, SO0, SCK0

Page 33

MZ-G750/R700

Pin No.

Pin Name

I/O

 

Description

 

 

 

 

 

 

 

170

OPEN CLOSE SW

I

Open/close detection switch (S806) of the upper panel input terminal (A/D input)

“L”: when upper panel close

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

171

GND SW

O

Control signal output to the ground (GND) changeover switch

 

 

 

 

 

 

 

 

 

172, 173

SET CODE0, 1

O

Input terminal for the set (fixed at “L” in this set)

 

 

 

 

 

 

 

 

 

 

 

174

SET CODE2

O

Input terminal for the set (open in this set)

 

 

 

 

 

 

 

 

 

 

 

175

SET CODE3

O

Input terminal for the set (fixed at “L” in this set)

 

 

 

 

 

 

 

176

MIFVDD1

—

Power supply terminal (for the microcomputer I/F block) (+2.3 V)

 

 

 

 

 

 

 

177

MIFVSS1

—

Ground terminal (for the microcomputer I/F block)

 

 

 

 

 

 

 

 

 

 

 

178

(AOUT SEL)

O

HP/LINE changeover signal output

Not used (open)

 

 

 

 

 

 

 

179

SI0

I

Serial data input from the nonvolatile memory (IC804) and liquid crystal display

element module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

180

SO0

O

Serial data output to the nonvolatile memory (IC804), A/D converter (IC301) and

liquid crystal display element module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

181

SCK0

O

Serial clock signal output to the nonvolatile memory (IC804), A/D converter (IC301)

and liquid crystal display element module

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

182

XGUM ON

I

Battery pack detection switch input terminal for the charge

 

 

“L”: there is battery pack for the charge

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

183

BEEP

O

Beep sound control signal output to the headphone amp (IC302)

 

 

 

 

 

 

 

 

 

 

 

184

NC

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

185

VD SEL

O

VD power supply changeover signal output terminal

Not used (open)

 

 

 

 

 

 

186

(XMUTE)

O

Analog muting control signal output terminal

“L”: muting ON

Not used (open)

 

 

 

 

187

LCD RST AUX

O

Reset control signal output terminal to the liquid crystal display element “L”: reset

 

 

 

 

 

 

 

 

 

 

188, 189

NC

O

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

190

XPATCH

I

Patch function detection input terminal

“L”: patch function

Fixed at “L” in this set

 

 

 

 

 

 

 

 

 

191

OPT DET

I

DIN plug detection signal input terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

192

XJACK DET

I

LINE IN plug detection signal input terminal

 

 

 

 

 

 

 

 

 

 

 

193

XMIC DET

I

Microphone plug detection signal input terminal

 

 

 

 

 

 

 

 

 

194, 195

PD S0, PD S1

O

PD IC mode changeover signal output to the optical pick up

 

 

 

 

 

 

196

MIFVDD2

—

Power supply terminal (for the microcomputer I/F block) (+2.3 V)

 

 

 

 

197 – 199

MODE1 – 3

O

Power supply control signal output (for the over write head drive) to the over write

head drive (IC601)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

200, 201

HD CON 1, 2

O

Over write head control signal output to the over write head drive (IC601)

 

 

 

 

 

202

REC WBL SW

O

LPF changeover switch input terminal when REC/PB control

Not used (open)

 

 

 

 

 

 

 

203

XCS ADA

O

Chip select signal output to A/D converter (IC301)

 

 

 

 

 

 

 

204

XPD ADA

O

Power supply control signal output for the drive to A/D converter (IC301)

 

 

 

 

 

 

205

XCS LCD

O

Chip select signal output to the liquid crystal display element

 

 

 

 

 

 

 

 

206

LCD STB

O

Strobe signal output to the the liquid crystal display element

 

 

 

 

 

 

 

207

LCD RST

O

Reset control signal output to the liquid crystal display element

Not used (open)

 

 

 

 

 

208

REC LED

O

LED ON/OFF control signal output for REC display

Not used (open)

 

 

 

 

209

LD ON

O

ON/OFF control signal output terminal of the laser diode Not used (open)

 

 

 

 

 

 

 

 

 

210

TSB SLV CHK

I

TSB slave detection signal input terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

211, 212

NC

I

Not used (open)

 

 

 

 

 

 

 

 

 

 

 

 

 

213

MCUVSS1

—

Ground terminal (for the microcomputer block)

 

 

 

 

 

 

 

 

 

214

CAV CLV SW

O

CAV/CLV changeover control signal output

Not used (open)

 

 

 

 

 

 

215

XOPT CTL

O

Power supply ON/OFF control signal output for DIN PD drive

 

 

 

 

 

 

 

 

216

(CS RTC)

O

Chip select signal output to the clock IC

Not used (open)

 

 

 

 

 

 

 

 

 

 

217

OFTRK

I

Off track signal input from RF amp (IC501)

 

 

 

 

 

 

 

 

 

 

 

218

MUTE

O

Analog muting control signal output

“H”: muting ON

 

 

 

 

 

 

 

 

 

219

XCS NV

O

Chip select signal output to EEPROM (IC804)

 

 

 

 

 

 

 

 

 

 

220

XRST MTR DRV

O

Reset control signal output to the motor driver (IC551)

 

 

 

 

 

 

 

 

 

 

221

XRF RST

O

Reset control signal output to RF amp (IC501)

 

 

 

 

 

 

 

 

222

MCUVDD3

—

Power supply terminal (for the microcomputer block) (+1.5 V)

 

 

 

 

 

 

223

SPDL MON

I

Spindle servo monitor signal input from the motor driver (IC551)

 

 

 

 

 

 

 

 

 

 

 

33

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Contents MZ-G750/R700 SpecificationsMZ-G750/R700 Flexible Circuit Board RepairingElectrical Adjustments Table of ContentsDisassembly DiagramsOptical PICK-UP Flexible Board Section Servicing NoteMZ-G750 Section GeneralMZ-R700 Section Disassembly Panel ASSY, LowerPanel ASSY, Upper Main Board LCD ModuleMD Mechanism Deck Service ASSY, OPMotor Flexible Board Holder AssyMOTOR, DC M601, MOTOR, DC M603 MOTOR, DC M602Section Test Mode 8888eVersion Ver 1.200 00 Manual Mode Configuration of Test ModeTransition method in Manual Mode ManualSelf-Diagnosis Result Display Mode Overall Adjustment ModeSelf-Diagnosis Result Display Mode Setting Method LrefPw 1D 0Description of Error Indication Codes Reset the error display codeSetting method of Reset the Error Display Code Description of Indication HistorySound Skip Check Result Display Mode Key Check ModeRPLAY SET OK ResNV CC 0 Reset! 0Res OK? 0 ResV5num V1datV5dat AssyLaser SetTmpLrefPw HrefPwMain Boardside a Configuration of overall adjustmentElectrical Offset Adjusting Method Overall Adjustment Mode Title DisplayAdjustment Method of Overall CD and MO Adjustment Mode OfstResume CC 0 Patch Data Rewriting When Nonvolatile Memory was ReplacedResClr PatClr CC 00D581E Patch 00 00D5900 0D59B20D6204 0D62000D6500 0D65200D6400 0D61200D64F4 0D651C0D6CF6 0D6C000D6D00 0D6D1C0D751C 0D75000D7600 0D7603IC PIN Function Description Section DiagramsMIC Sense Pause KEYMIFVSS3 SET KEYDSPVSS0 DSPVDD0Xtsl LrckSlcu SldwSlcv SlcwGND SW Open Close SWSET CODE0 SET CODE2Sycn REC Xhold SWFlashvdd FlashvssBoard Block Diagram Servo SectionMain Board Block Diagram Audio SectionMain Board 3/3 System CONTROL/POWER Section Block Diagram System Control / Power SectionMain Board Side a Printed Wiring Board Main SectionMotor Flexible Board Waveforms Common note on Schematic DiagramIC B/D 184 R104,204 Except US model10k US model 33k IC551 SC111257FCR2 IC501 SN761057DBTIC303 IC1006 XC6371C271PR MZ-G750IC901 IC601IC302 TA2131FL IC301 AK5354VTSection Exploded ViewsPanel Section 56 @ Chassis Section101 102 103 104 MD Mechanism Deck Section MT-MZR700-172122 110 112 111 109 103 117 119 120 118 105 106 108 107 115 121Resistors Main Electrical Parts ListMain Short FET Filter Miscellaneous Revision History

MZ-R700 specifications

The Sony MZ-R700 is a compact digital minidisc recorder that has made a significant mark in the portable audio landscape since its introduction. Known for its outstanding sound quality and portable design, it appeals to audiophiles and casual listeners alike. The MZ-R700 is lauded for its ability to record and playback high-quality audio, making it a go-to device for musicians, DJs, and anyone who values sound fidelity.

One of the main features of the MZ-R700 is its ability to record music in various formats. It supports the ATRAC (Adaptive Transform Acoustic Coding) compression format, which allows users to store more audio data on a minidisc while maintaining remarkable sound clarity. This technology ensures that even with compression, the audio remains rich and engaging.

The MZ-R700 comes equipped with a digital recording feature, enabling users to transfer tracks directly from CDs or other digital sources without sacrificing quality. It is compatible with a wide range of digital audio formats, allowing for flexibility in recording options. Additionally, the device offers various recording modes, giving users the choice between standard quality and long-play modes, depending on their needs.

Portability is a key characteristic of the MZ-R700. Weighing just a few ounces and featuring a sleek, ergonomic design, it fits comfortably in the hand and can easily be carried in a pocket or bag. Its user-friendly interface includes an LCD screen that displays track information, making it easy for users to navigate through their music library.

Another notable feature is its battery efficiency. The MZ-R700 is powered by a rechargeable lithium-ion battery, providing extended playback time. Users can enjoy hours of continuous music playback, making it perfect for long journeys or outdoor activities.

The popular mic input allows for live recordings, a feature that musicians and podcasters find particularly beneficial. Moreover, the unit supports various input options, including a line-in and a 3.5mm microphone jack, ensuring versatility for different recording needs.

In summary, the Sony MZ-R700 is a robust and feature-rich digital minidisc recorder that combines portability, superior sound quality, and user-friendly design. With advanced recording technologies and efficient battery life, it caters to a variety of audio enthusiasts, making it a remarkable choice for portable sound recording and playback.
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