Sony RMT-V294A, LX70S, RMT-V293A, LX60S, LX40, LX50 service manual Pin Name Function

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5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS (MA-405 BOARD IC160)

Pin No.

 

 

Pin Name

I/O

Function

 

 

 

 

 

 

1

 

DEST

I

Destination control input

 

 

 

 

 

 

2

 

MPX MODE

I

STEREO/MONO/SAP DETECTION

 

 

 

 

 

 

3

 

TU AFT

I

Tuner analog AFT input

 

 

 

 

 

 

4

 

FUNC KEY2

I

Key input

 

 

 

 

 

 

5

 

FUNC KEY1

I

Key input

 

 

 

 

 

 

6

 

S SENS

I

Tape end sensor input

 

 

 

 

 

 

7

 

T SENS

I

Tape top sensor input

 

 

 

 

 

 

8

 

V RF ENV

I

Video playback signal envelope input

 

 

 

 

 

 

9

 

AF ANV

I

Hi-Fi audio playback signal envelope input

 

 

 

 

 

 

10

 

CBC ON

O

Cable box control signal output

 

 

 

 

 

 

11

 

KKP+

I

ETR pulese signal input

 

 

 

 

 

 

12

 

KKP–

I

ETR pulese signal input

 

 

 

 

 

 

13

 

QVD

O

Quasi VD pulese output

 

 

 

 

 

 

14

 

REMOCON

I

Remote sires signal input

 

 

 

 

 

 

15

 

C ROT

O

Head AZ signal output

 

 

 

 

 

 

16

 

HA SWP

O

SP/EP changed head signal

 

 

 

 

 

 

17

 

ENV SW

I

SP/EP head output lebel ditaction signal

 

 

 

 

 

 

18

 

RF SWP

O

VIDEO RF switching pulse output.

 

 

 

 

 

 

19

 

AF SWP

O

AF switching pulse output.

 

 

 

 

 

 

20

 

END LED

O

END sensor LED output

 

 

 

 

 

 

21

 

ANT SEL

O

TV/VTR RF modulator control output

 

 

 

 

 

 

22

 

AF REC P

O

Hi-Fi record control pulse output.

 

 

 

 

 

 

23

 

FE ON

—

NC

 

 

 

 

 

 

24

 

CAP RVS

O

Capstan reverse control

 

 

 

 

 

 

25

 

SUR ON

—

NC

 

 

 

 

 

 

26

 

MODE4

I

Mechanism section CAM encoder input (data4)

 

 

 

 

 

 

27

 

MODE3

I

Mechanism section CAM encoder input (data3)

 

 

 

 

 

 

28

 

MODE2

I

Mechanism section CAM encoder input (data2)

 

 

 

 

 

 

29

 

MODE1

I

Mechanism section CAM encoder input (data1)

 

 

 

 

 

 

30

 

REC PRF

I

Erasing protection tab, cassette IN detection input

 

 

 

 

 

 

31

 

I2C CLK EEP

I/O

HC CLOCK line (EEPROM)

 

 

 

 

 

 

32

 

I2C DATA EEP

I/O

HC DATA line (EEPROM)

 

 

 

 

 

 

33

 

CAM

O

Cam motor control signal output

 

 

 

 

 

 

34

 

RESET

I

System reset input

 

 

 

 

 

 

35

 

32kHz (in)

I

Sub clock 32MHz

 

 

 

 

 

 

36

 

32kHz (out)

O

Sub clock 32MHz

 

 

 

 

 

 

37

 

Vcc

I

5V

 

 

 

 

 

 

38

 

4fsc (in)

I

Main clock input

 

 

 

 

 

 

39

 

4fsc (out)

O

Main clock output

 

 

 

 

 

 

40

 

Vss

—

Ground

 

 

 

 

 

 

41

 

ARC CLK

O

Realityregenarator (ARC) control clock signal

 

 

 

 

 

 

42

 

ARC DATA

O

Realityregenarator (ARC) control data signal

 

 

 

 

 

 

43

 

CLK SEL

I

CLOCK seleal “L” Sub clock, “H” main and sub clock.

 

 

 

 

 

 

44

 

OSC IN

I

OSD clock input

 

 

 

 

 

 

45

 

OSC OUT

O

OSD clock output

 

 

 

 

 

 

46

 

NUB

—

Ground

 

 

 

 

 

 

47

 

LPF

I/O

fsc filter

 

 

 

 

 

 

48

 

 

 

O

“L” output when SP mode.

 

SP

49

 

OSD GND

—

Ground

 

 

 

 

 

 

50

 

OSD V IN

I

OSD Video signal input.

 

 

 

 

 

 

5-3

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Page 49 Page 51
Contents Specifications RMT-V293A/V294ASafety CHECK-OUT Disassembly Adjustments Table of ContentsService Note Block DiagramsService Note Error Code IndicationSetting up the remote commander HookupsCompleting A/V hookup Hookup 1 VCR setupHookup Antenna hookup HookupHookup 3 VCR setup Hookup 2 VCR setupHookup Connecting a cable box with many scrambled channels Automatic clock settingSelecting a language Setting the clockUsing the Auto Clock Set feature Using Manual Clock Set If the clock does not activatePresetting/disabling channels manually Presetting channelsPresetting all receivable channels automatically Playing a tape If the picture is not clearRecording TV programs To save a recording Recording TV programs using the Dial TimerTo watch another TV program while recording Before you startRecording TV programs using the timer About the Demonstration ModeTo resume normal playback Playing/searching at various speedsLocking the VCR Child Lock To lock the VCRRecording stereo programs Setting the recording duration timeChecking/changing/canceling timer settings Recording bilingual programsSearching using the Time Search function Searching for the beginning of a timer recorded programSearching using the index function How sound is recorded on a video tapePress H Play or x Stop To cancel skip-searchSearch forward while Showing the tape contents Fast-forward Changing menu options Adjusting the pictureAdjusting the tracking About the Adaptive Picture Control APC functionEditing with another VCR How to connect to record on this VCROperation when recording on this VCR Before you start editingGeneral setup information Index to parts and controlsDisplay window Rear panel11--19E SLV-LX40/LX50/LX60S/LX70S Section Disassembly CASE, Front Panel Block AssemblyRear Panel Mechansim Deck Bottom View Internal ViewsTop View Circuit Boards Location Overall Block Diagram Video Block Diagram SERVO/SYSTEM Control Block Diagram Tuner Block Diagram Audio Block Diagram Power Block Diagram TA a Xedit → Edit PB/XREC → PB/RECFrame Schematic Diagram VIDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, Power See page 4-21 for waveforms MA-405 BOARD1/7 MA-405 REC/PB Head AMP Schematic DiagramREC/PB Head AMP Audio Processor VA Block MA-405 Y/C, Audio Processor Schematic DiagramAudio Process MA-405 SERVO/SYSTEM Control Schematic Diagram SERVO/SYSTEM Control SS BlockAudio Process AU Block MA-405 Audio Process Schematic DiagramSee page 4-5 for printed wiring board MA-405 BOARD4/7 Tuner MA-405 Tuner Schematic DiagramSee page 4-5 for printed wiring board MA-405 BOARD5/7Display Control Front Block MA-405 Display Control Schematic DiagramSee page 4-5 for printed wiring board MA-405 BOARD6/7 See page 4-5 for printed wiring board MA-405 BOARD7/7 Power SupplyMA-405 Power Supply Schematic Diagram Power Supply PS BlockDrum PG REC/PBDrum FG OSD V OUTLine 2 Line 2FJ-32 Board DI-80 Board Dial Timer Dial Timer Signal Pin No System Control Mechanism Block Interface MA-405 Board IC160System Control VIDEO/RP Block Interface MA-405 Board IC160 System Control Audio Block Interface MA-405 Board IC160Pin Name Function 55-4E Preparation Before Adjustment Mechanical AdjustmentsElectrical Adjustments Power Supply Check Input/Output Levels and ImpedanceVTR Audio System AdjustmentServo System Check ACE Head Adjustment SW5V Adjusting Parts Location DiagramVIDEO/AUDIO Line IN/OUT RF/HF SWPExploded Views Front Panel and Upper Case SectionChassis Section 5455721 711 720 713 725 724 714 719 715 717 718 Mechanism Deck707 708 712 706 702 701 709 704 710 705 722 703 Roller ASSY, Guide Spring Power TensionBrake ASSY,MAINT Spring803 802 833 Screw + P2.6 x 6 TYPE2 NON-SLITLX70SCL,CS Connector SwitchSWITCH, Tact ResistorMA-405 Double LayerFilm CeramicMylar HOUSING, Connector 6P LX40/LX50 CONNECTOR, FFC/FPC 5PPIN, Connector 4P CONNECTOR, FFC/FPC 7PShort Jumper Selector FILTER, Line Fluorescent Indicator TubeTUBE, Fluorescent Indicator Short CoilTransistor 2SC1815GR-TPE2 TransistorTransistor PT380F3 Transistor 2SC2712Y-TE85LMetal Oxide SWITCH, Tact Ppause SWITCH, Rotary ModeSWITCH, Tact 0REW SWITCH, Tact ·PLAYRef. No Description Remarks Ref. No Sony Corporation Published by Quality Assurance Dept
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