Sony LX60S, LX70S, RMT-V293A, RMT-V294A Rec/Pb, Drum FG, Drum PG, Osd V Out, Ctl Amp Out, Video

Page 45

SLV-LX40/LX50/LX60S/LX70S

MA-405BOARD (1/7)	MA-405BOARD (2/7)
(R/P BLOCK)	(VA BLOCK)

MA-405BOARD (3/7) (SS BLOCK)

1IC260 4 REC/PB

			3.6Vp-p
	V

2IC260 5 REC/PB

			3.5Vp-p
	H

3IC260 7 PB

V0.6Vp-p

4IC260 9 REC

0.1µsec/div 170mVp-p 50mV/div

5IC260 0 REC

H 380mVp-p

6IC260 qj REC

0.1µsec/div 3.8Vp-p1V/div

7 IC201 2 REC		qf IC201 yj REC/PB
H	380mVp-p	3.579545MHz R 460mVp-p
8 IC201 7 REC		qg IC201 1 PB
0.1µsec/div	360mVp-p	V	0.6Vp-p
0.1µsec/div
0.1V/div
0.1V/div
9 IC201 wd PB		qh T380 6 REC
		69.9kHz	50Vp-p
H	0.5Vp-p	69.9kHz
H	0.5Vp-p
0 IC201 wk REC/PB
H	4.2Vp-p
qa IC201 wl REC
H	2.1Vp-p
qa IC201 wl PB
H	2.3Vp-p
H
qs IC201 ok RF SW P
REC/PB
30Hz	1.6Vp-p
30Hz
qd IC201 ej REC
H	1.0Vp-p
H
4-21

	qj IC160 el	4fsc (OUT)		wd IC160 i;T REEL
	qj IC160 el	REC/PB		wd IC160 i;T REEL
						4.8Vp-p
	14.31818MHz		5.0Vp-p	1.6sec (TAPE TOP)
	14.31818MHz		5.0Vp-p
	qk IC160 rg	OSC OUT		wf IC160 ij CAP FG SP
	qk IC160 rg	REC/PB		wf IC160 ij CAP FG SP
				1078Hz		4.4Vp-p
				1078Hz
	25.3MHz		4.6Vp-p
	ql IC160 t; OSC V IN REC			wg IC160 il	DRUM FG
	ql IC160 t; OSC V IN REC			wg IC160 il	REC/PB
					REC/PB
	H		2.2Vp-p	360Hz		4.5Vp-p
	ql IC160 t; OSC V IN PB			wh IC160 o;	DRUM PG
					REC/PB
				30Hz		4.6Vp-p
				30Hz
		H	2.3Vp-p
	w; IC160 ts	OSD V OUT		wj IC160 og CTL+IN REC
	w; IC160 ts	REC		wj IC160 og CTL+IN REC
			2.2Vp-p
				30Hz		5.0Vp-p
				30Hz
	H
	w; IC160 ts OSD V OUT PB			wk IC160 oj	CTL AMP OUT
					PB
						4.0Vp-p
	H		2.3Vp-p	30Hz
	wa IC160 th	C VIDEO IN		wl IC160 eh	32kHz (OUT)
		REC/PB			REC/PB
			2.0Vp-p
	H			32.768kHz		3.0Vp-p
	H
	ws IC160 ul S REEL
			4.8Vp-p
	0.9sec (TAPE TOP)
						4-22

Image 45

Contents RMT-V293A/V294A SpecificationsSafety CHECK-OUT Service Note Table of ContentsDisassembly Adjustments Block DiagramsError Code Indication Service NoteHookups Setting up the remote commanderHookup Antenna hookup Hookup 1 VCR setupCompleting A/V hookup HookupHookup Connecting a cable box with many scrambled channels Hookup 2 VCR setupHookup 3 VCR setup Automatic clock settingSetting the clock Using the Auto Clock Set featureSelecting a language If the clock does not activate Using Manual Clock SetPresetting channels Presetting all receivable channels automaticallyPresetting/disabling channels manually If the picture is not clear Playing a tapeRecording TV programs To watch another TV program while recording Recording TV programs using the Dial TimerTo save a recording Before you startAbout the Demonstration Mode Recording TV programs using the timerLocking the VCR Child Lock Playing/searching at various speedsTo resume normal playback To lock the VCRChecking/changing/canceling timer settings Setting the recording duration timeRecording stereo programs Recording bilingual programsSearching using the index function Searching for the beginning of a timer recorded programSearching using the Time Search function How sound is recorded on a video tapeTo cancel skip-search Search forward while Showing the tape contents Fast-forwardPress H Play or x Stop Adjusting the tracking Adjusting the pictureChanging menu options About the Adaptive Picture Control APC functionOperation when recording on this VCR How to connect to record on this VCREditing with another VCR Before you start editingIndex to parts and controls General setup informationRear panel Display window11--19E CASE, Front Panel Block Assembly SLV-LX40/LX50/LX60S/LX70S Section DisassemblyRear Panel Mechansim Deck Internal Views Top ViewBottom View Circuit Boards Location Overall Block Diagram Video Block Diagram SERVO/SYSTEM Control Block Diagram Tuner Block Diagram Audio Block Diagram Power Block Diagram Xedit → Edit PB/XREC → PB/REC TA aFrame Schematic Diagram VIDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, Power MA-405 REC/PB Head AMP Schematic Diagram REC/PB Head AMPSee page 4-21 for waveforms MA-405 BOARD1/7 MA-405 Y/C, Audio Processor Schematic Diagram Audio ProcessAudio Processor VA Block SERVO/SYSTEM Control SS Block MA-405 SERVO/SYSTEM Control Schematic DiagramMA-405 Audio Process Schematic Diagram See page 4-5 for printed wiring board MA-405 BOARD4/7Audio Process AU Block See page 4-5 for printed wiring board MA-405 Tuner Schematic DiagramTuner MA-405 BOARD5/7MA-405 Display Control Schematic Diagram See page 4-5 for printed wiring board MA-405 BOARD6/7Display Control Front Block MA-405 Power Supply Schematic Diagram Power SupplySee page 4-5 for printed wiring board MA-405 BOARD7/7 Power Supply PS BlockDrum FG REC/PBDrum PG OSD V OUTLine 2 FJ-32 BoardLine 2 Dial Timer Dial TimerDI-80 Board System Control Mechanism Block Interface MA-405 Board IC160 Signal Pin NoSystem Control Audio Block Interface MA-405 Board IC160 System Control VIDEO/RP Block Interface MA-405 Board IC160Pin Name Function 55-4E Mechanical Adjustments Electrical AdjustmentsPreparation Before Adjustment Input/Output Levels and Impedance Power Supply CheckAudio System Adjustment Servo System CheckVTR ACE Head Adjustment VIDEO/AUDIO Line IN/OUT Adjusting Parts Location DiagramSW5V RF/HF SWPFront Panel and Upper Case Section Exploded Views5455 Chassis SectionMechanism Deck 707 708 712 706 702 701 709 704 710 705 722 703721 711 720 713 725 724 714 719 715 717 718 Brake ASSY,MAINT Spring Power TensionRoller ASSY, Guide SpringScrew + P2.6 x 6 TYPE2 NON-SLIT 803 802 833SWITCH, Tact SwitchLX70SCL,CS Connector ResistorDouble Layer MA-405Ceramic MylarFilm PIN, Connector 4P CONNECTOR, FFC/FPC 5PHOUSING, Connector 6P LX40/LX50 CONNECTOR, FFC/FPC 7PTUBE, Fluorescent Indicator FILTER, Line Fluorescent Indicator TubeShort Jumper Selector Short CoilTransistor PT380F3 TransistorTransistor 2SC1815GR-TPE2 Transistor 2SC2712Y-TE85LMetal Oxide SWITCH, Tact 0REW SWITCH, Rotary ModeSWITCH, Tact Ppause SWITCH, Tact ·PLAYRef. No Description Remarks Ref. No Published by Quality Assurance Dept Sony Corporation