Sony MX-E501 service manual Lcd Stb

Page 52

MZ-E501

Pin No.

Pin Name

I/O

Description

 

 

 

 

206

LCD STB

O

Not used (open)

 

 

 

 

207

LCD RST

O

Not used (open)

208

REC LED

O

Not used (open)

 

 

 

 

209

LD ON

O

Not used (open)

 

 

 

 

210

TSB SLV CHK

I

TSB slave check

 

 

 

 

211

K-TAI_MON

I

Not used (open)

212

K-TAI_SW

I

Not used (open)

213

MCUVSS1

Ground (for the microcomputer block)

214

CAV CLV SW

O

Not used (open)

 

 

 

 

215

XOPT CTL

O

Not used (open)

 

 

 

 

216

CS RTC

O

Not used (open)

217

OFTRK

I

Off track signal input

 

 

 

 

218

MUTE

O

Analog mute “H”: muting ON

219

XCS NV

O

NV RAM chip select

 

 

 

 

220

XRST MTR

O

NADESHIKO2 reset

DRV

 

 

 

 

 

 

 

221

XRF RST

O

TIARA reset

 

 

 

 

222

MCUVDD3

Power supply (for the microcomputer block)

223

SPDL MON

I

Spindle monitor

 

 

 

 

224

XAVLS

I

AVLS SW detection

225, 226

SOUND 1, 2

I

Not used (open)

227

XHOLD SW

I

HOLD switch detection

 

 

 

 

228

SYNC REC

I

Not used (open)

229

TSB_SSB_CTL

O

TSB/SSB switching

 

 

 

 

230

PROTECT

I

Not used (open)

231

FLASHVDD

Power supply for FLASH

 

 

 

 

232

FLASHVSS

Ground terminal for FLASH

233

SLD MON

I

Sled monitor

 

 

 

 

234

VLON

O

Laser power supply control

235

SLEEP

O

SLEEP request

 

 

 

 

236

FFCLR

O

Input latch output for the start signal

237

CHG GAIN

O

Not used (open)

 

 

 

 

238

CHG

O

Not used (open)

 

 

 

 

239

TUN REG ON

O

Not used (open)

 

 

 

 

240

XHP STBY

O

HP Amp power supply control

 

 

 

 

241

MIFVDD3

Power supply (for the microcomputer I/F block)

 

 

 

 

242

MIFVSS2

Ground (for the microcomputer I/F block)

243

TEST2

O

Not used (open)

 

 

 

 

244

NC

Not used (open)

16

Image 52
Contents Specifications MZ-E501Table of Contents DisassemblyDiagrams Exploded ViewsSection Servicing Notes Section General Location and Function of Controls GroupSection Disassembly Case ASSY, Holder AssyMechanism Deck Bracket AssyMain Board Optical PICK-UP Assy LCX-4ESetting the Test Mode Section Test ModeGeneral Overall Adjustment Mode Manual ModeHow to set the Manual mode SELF-DIAGNOSTIC Display Mode Self-diagnostic modeKEY Check Mode Sound Skip Check Result Display ModeSetting the Key Check mode EIBManual Power Adjustments Section Electrical AdjustmentsReset NV Electrical offset adjustment method Vc PWM Duty H adjustment methodOverall CD and MO adjustment method Overall CD and MO adjustment items Resume clear methodMZ-E501 Section Diagrams WaveformsBlock Diagram Main BoardPrinted Wiring Board Main Section Side a SemiconductorPrinted Wiring Board Main Section Side B Side BOprledgh MZ-E501 2222 IC Block Diagrams IC301 TA2131FL ELIC901 XPC18A32FCR2 IC PIN Function Description Oprledgl XtestOprledrl MIFVSS3AVS2 Avss APCDSPVDD0 DSPVSS0DSPVDD2 DSPVSS1Spcu SpcvTEST1, TEST0 SSB CLKMCUVSS0 VL PWMLCD STB LCD RSTREC LED TSB SLV CHKSection Exploded Views Main SectionMechanism Section 5961Electrical Parts List Main SectionXPC18A32FCR2 Ver 1.1 Memo MZ-E501 How to distinguish the sets Before change After change¥ Signal path Main Board Main Board + Line Tantalums Schematic Diagram Main /3 See page 9 for IC Block Diagrams IC Block Diagrams IC901 XPC18A32FCR2 Signal C input from the optical pick-up detector IC601 CXD2671-207GA System Control AVS2 Avss DSPVDD2 188,189 Not used open 190 LCD STB 1uF 10% C102 126-246-11 IC XPC18A32FCR2 SWITCH, Tactile VOL− Revision History Ver Date Description of Revision