Sony MZ-R91 service manual IC PIN Function Description

Page 30

6-6. IC PIN FUNCTION DESCRIPTION

•MAIN BOARD IC501 SN761056ADBT (RF AMP, FOCUS/TRACKING ERROR AMP)

Pin No.

 

Pin Name

I/O

Description

 

 

 

 

 

 

1

 

 

TE

O

Tracking error signal output to the CXD2660GA (IC502)

 

 

 

 

 

 

2

 

REXT

—

Connected to the external resistor for the ADIP amplifier control

 

 

 

 

 

 

3

 

WPPLPF

—

Connected to the external capacitor for low-pass filter of the TPP/WPP

4

 

VREF11

O

Reference voltage output terminal (+1.1V)

5

 

 

C

I

Signal input from the optical pick-up detector (C)

 

 

 

 

 

 

6

 

 

D

I

Signal input from the optical pick-up detector (D)

 

 

 

 

 

 

7

 

 

D-C

I

Signal input from the optical pick-up detector (D) (AC input)

 

 

 

 

 

 

8

 

 

IY

I

I-V converted RF signal IY input from the optical pick-up block detector

 

 

 

 

 

 

9

 

 

IX

I

I-V converted RF signal IX input from the optical pick-up block detector

10

 

 

JX

I

I-V converted RF signal JX input from the optical pick-up block detector

11

 

 

JY

I

I-V converted RF signal JY input from the optical pick-up block detector

 

 

 

 

 

 

12

 

 

A

I

Signal input from the optical pick-up detector (A)

 

 

 

 

 

 

13

 

 

A-C

I

Signal input from the optical pick-up detector (A) (AC input)

 

 

 

 

 

 

14

 

 

B

I

Signal input from the optical pick-up detector (B)

 

 

 

 

 

 

15

 

TON-C

—

Connected to the external capacitor for the TON hold

16

 

 

CIG

—

Connected to the external capacitor for low-pass filter of the NPP divider denominator

17

 

CDN

—

Connected to the external capacitor for low-pass filter of the CSL divider denominator

 

 

 

 

 

 

18

 

PD-NI

I

Light amount monitor input terminal (non-invert input)

 

 

 

 

 

 

19

 

PD-I

I

Light amount monitor input terminal (invert input)

 

 

 

 

 

 

20

 

PD-O

O

Light amount monitor output terminal

 

 

 

 

 

 

21

 

ADFG

O

ADIP duplex FM signal (22.05 kHz ± 1 kHz) output to the CXD2660GA (IC502)

22

 

DVDD

—

Power supply terminal (+2.4V) (digital system)

23

 

SBUS

I/O

Two-way SSB serial data bus with the system controller (IC801)

24

 

SCK

I

SSB serial clock signal input from the system controller (IC801)

 

 

 

 

 

 

25

 

XRST

I

Reset signal input from the system controller (IC801) “L”: reset

 

 

 

 

 

 

26

 

OFTRK

I

Off track signal input from the CXD2660GA (IC502)

 

 

 

 

 

27

 

DGND

—

Ground terminal (digital system)

 

 

 

 

 

28

 

BOTM

O

Light amount signal (RF/ABCD) bottom hold output to the CXD2660GA (IC502)

29

 

PEAK

O

Light amount signal (RF/ABCD) peak hold output to the CXD2660GA (IC502)

30

 

VREF075

—

Connected to the external capacitor for the internal reference voltage

 

 

 

 

 

 

31

 

 

VC

O

Middle point voltage (+1.2V) generation output terminal

 

 

 

 

 

32

 

CCSL2

—

Connected to the external capacitor for low-pass filter of the TPP/WPP

 

 

 

 

 

33

 

RF OUT

O

Playback EFM RF signal output to the CXD2660GA (IC502)

 

 

 

 

 

34

 

AGND

—

Ground terminal (analog system)

35

 

 

EQ

—

Connected to the external capacitor for the RF equalizer

36

 

 

LP

—

Connected to the external capacitor for the RF equalizer

 

 

 

 

 

 

37

 

 

PS

—

Connected to the external capacitor for the RF equalizer

 

 

 

 

 

38

 

OFC-2

—

Connected to the external capacitor for the RF AC coupling

 

 

 

 

 

39

 

OFC-1

—

Connected to the external capacitor for the RF AC coupling

 

 

 

 

 

40

 

AVCC

—

Power supply terminal (+2.4V) (analog system)

41

 

ABCD

O

Light amount signal (ABCD) output to the CXD2660GA (IC502)

42

 

 

FE

O

Focus error signal output to the CXD2660GA (IC502)

 

 

 

 

 

43

 

S-MON

O

Servo signal monitor output to the system controller (IC801)

 

 

 

 

 

44

 

ADIP-IN

I

ADIP duplex FM signal (22.05 kHz ± 1 kHz) input terminal Not used

 

 

 

 

 

 

– 46 –

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Contents Specifications NEWLCX-2R Exploded Views Electrical Parts List Table of ContentsDiagrams Flexible Circuit Board RepairingSection Servicing Notes EepromGeneral Headphones with a remote control RM-MZ2SSection Location of ControlsSection Disassembly Panel ASSY, BottomUpper Panel Section LCD MODULE, BUTTON, CONTROL, Service ASSY, Upper Panel MZ-R90MZ-R91 Main BOARD, Case ASSY, Battery Belt ASSY, OrnamentalService ASSY, OP Chassis ASSY, SET, MD Mechanism Deck MT-MZR90-165Holder Assy Motor Flexible BoardMOTOR, DC Sled M602 Operation in Setting the Test Mode Test ModeSetting Method of Test Mode Releasing the Test ModeConfiguration of Test Mode Manual ModeA n u a l 011 0 6 3 B 0 Overall Adjustment Mode011 0 F F J 0 011 0 5 9 a 0T a t Sound Skip Check Result Display ModeSetting method of Sound Skip Check Result Display Mode T r ySelf-Diagnosis Display Mode 000 1 s tDescription of Indication History Description of Error Indication CodesClearing Self-Diagnosis Data and Total Recording Time RECKey Check Mode Key IndicationE s O K ? Section Electrical AdjustmentsE s N E sR h V c l C l P W MC h P W M R h V c hD R U N E t T m pS S Y D O KE s u m e Laser Power CheckO O K E s C l rSignal Path Section DiagramsBlock Diagram Servo Section REC DigitalBlock Diagram A/D, D/A CONVERTER, Audio Section Block Diagram KEY CONTROL/DISPLAY/POWER Supply SectionSignal Path Play Analog OUT REC Analog REC Digital Printed Wiring Board Semiconductor LocationJEW MZ-R90/R91 IC501 SN761056ADBT IC Block Diagrams IC301Waveforms IC304, 305 RN5RZ25AA-TRIC601 IC602IC603 IC605 XC6367B103MR IC803 XC6383C301MRIC902 IC804 RV5C348A-E2 IC901IC PIN Function Description Sclk VDC0Swdt VSC0Xras VDIO1VSIO1 IxoeLddr XlrfApcref VDC4Sense Sync RECPause KEY WrpwrTSB Edge FfclrSleep GND SWSET KEY Half LockRMC KEY REC KEYSection Exploded Views Panel Section MZ-R90HK, CH, JEW Panel Section MZ-R91 Chassis section Not suppliedChassis Section 101 105 113 112 114 106 110 107 111 109102 103 104 108 109 MD-MECHANISM Deck Section Electrical Parts List MainCeramic Chip 5PF CAP, ChipCXD2660GA ConnectorFILTER, Chip EMI Common Mode IC MPC17A56FTAEBFET FET HAT2051T-ELFET HAT2050T-EL Transistor ZDT6718TASwitch Composition Circuit BlockOPEN/CLOSE Detect Thermistor TH901 1-803-795-21 THERMISTOR, Positive Vibrator SWITCH, Slide HoldSWITCH, Slide Synchro REC MiscellaneousMZ-R90/R91 Subject Addition of Korean Model CorrectionElectrical Parts List Exploded ViewsHong Kong Model Korean Model 112 105 106 #114 151 176 @Indicates changed portion.EXPLODED Views IC MPC17A56FTA IC MPC18A31FTAEB
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