Sony MZ-R700 Xhold SW, Sycn REC, Flashvdd, Flashvss, Vlon, Sleep, Ffclr, MIFVSS2, TEST2

Page 34

MZ-G750/R700

Pin No.

Pin Name

I/O

Description

 

 

 

 

 

 

224 – 226

(XAVLS), (SOUND 1, 2)

I

Not used (open)

 

 

 

 

 

 

227

XHOLD SW

I

HOLD switch input terminal “L”: hold ON, “H”: hold OFF

 

 

 

 

 

228

(SYCN REC)

I

SYNCHRO REC switch input terminal “L”: OFF, “H”: ON Not used (open)

 

 

 

 

 

229

NC

O

Not used (open)

 

 

 

 

 

230

PROTECT

I

Detection input terminal of the record check claw from the protect detection switch

(S803) “L”: recording possible condition, “H”: protect

 

 

 

 

 

 

 

 

 

 

231

FLASHVDD

Power supply terminal (for the internal FLASH ROM) (+2.4 V)

 

 

 

 

 

 

232

FLASHVSS

Ground terminal (for the internal FLASH ROM)

 

 

 

 

 

 

233

SLD MON

I

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

 

 

 

 

 

234

VLON

O

Power supply control signal output for the laser diode drive to the power

control (IC901)

 

 

 

 

 

 

 

 

 

 

235

SLEEP

O

System sleep control signal coutput to the power control (IC901)

“H”: sleep ON

 

 

 

 

236

FFCLR

O

Input latch output for the start switching to the power control (IC901)

 

 

 

 

 

237

CHG GAIN

O

Charge gain control signal output to the power control (IC601)

 

 

 

 

 

 

238

CHG

O

Charge ON/OFF control signal output to the power control (IC601)

“H”: charge ON

 

 

 

 

 

239

(TUN REG ON)

O

Not used (open)

 

 

 

 

 

 

240

XHP STBY

O

Headphone standby signal output to the headphone amp (IC302)

 

 

 

 

 

 

241

MIFVDD3

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

 

 

 

 

 

 

242

MIFVSS2

Ground terminal (for the microcomputer I/F block)

 

 

 

 

 

 

243

TEST2

O

Input terminal for the main test (normally open)

 

 

 

 

 

 

244

NC

Not used (open)

 

 

 

 

 

 

34

Image 34 Contents
Specifications MZ-G750/R700Flexible Circuit Board Repairing MZ-G750/R700Disassembly Table of ContentsElectrical Adjustments DiagramsSection Servicing Note Optical PICK-UP Flexible BoardSection General MZ-G750MZ-R700 Panel ASSY, Lower Section DisassemblyPanel ASSY, Upper LCD Module Main BoardService ASSY, OP MD Mechanism DeckHolder Assy Motor Flexible BoardMOTOR, DC M602 MOTOR, DC M601, MOTOR, DC M6038888e Section Test ModeVersion Ver 1.200 00 Transition method in Manual Mode Configuration of Test ModeManual Mode ManualSelf-Diagnosis Result Display Mode Setting Method Overall Adjustment ModeSelf-Diagnosis Result Display Mode LrefPw 1D 0Setting method of Reset the Error Display Code Reset the error display codeDescription of Error Indication Codes Description of Indication HistoryKey Check Mode Sound Skip Check Result Display ModeRPLAY SET OK Res OK? 0 Reset! 0ResNV CC 0 ResV5dat V1datV5num AssyLrefPw SetTmpLaser HrefPwConfiguration of overall adjustment Main Boardside aAdjustment Method of Overall CD and MO Adjustment Mode Overall Adjustment Mode Title DisplayElectrical Offset Adjusting Method OfstResClr Patch Data Rewriting When Nonvolatile Memory was ReplacedResume CC 0 PatClr CC 00D5900 Patch 00 00D581E 0D59B20D6500 0D62000D6204 0D65200D64F4 0D61200D6400 0D651C0D6D00 0D6C000D6CF6 0D6D1C0D7600 0D75000D751C 0D7603Section Diagrams IC PIN Function Description MIFVSS3 Pause KEY MIC Sense SET KEYXtsl DSPVDD0DSPVSS0 LrckSlcv SldwSlcu SlcwSET CODE0 Open Close SWGND SW SET CODE2Flashvdd Xhold SWSycn REC FlashvssBlock Diagram Servo Section BoardBlock Diagram Audio Section Main BoardBlock Diagram System Control / Power Section Main Board 3/3 System CONTROL/POWER SectionPrinted Wiring Board Main Section Main Board Side aMotor Flexible Board Common note on Schematic Diagram WaveformsIC B/D 184 R104,204 Except US model10k US model 33k IC303 IC501 SN761057DBTIC551 SC111257FCR2 IC1006 XC6371C271PR MZ-G750IC601 IC901IC301 AK5354VT IC302 TA2131FLExploded Views SectionPanel Section Chassis Section 56 @122 110 112 111 MD Mechanism Deck Section MT-MZR700-172101 102 103 104 109 103 117 119 120 118 105 106 108 107 115 121Main Electrical Parts List ResistorsMain Short FET Filter Miscellaneous Revision History