Sony SLV-L49, SLV-L52, SLV-L59 Service Manual

SLV-L49/L52/L59/L69HF/L72HF/L79HF/L89HF/X55/X66HF

	RMT-V267/V268
SERVICE MANUAL	Mexican Model
	SLV-L49/L69HF/L89HF/X55/X66HF

j

Panama Model

Ecuador Model

Colombia Model

SLV-L52/L72HF

Bolivia Model

Peru Model

Photo: SLV-L89HF Chilean Model

RMT-V267

Venezuelan Model

S MECHANISM

SLV-L59/L79HF/L89HF

Puerto Rico Model

SLV-L59/L79HF

Refer to the SERVICE MANUAL of VHS

MECHANICAL ADJUSTMENT for

MECHANICAL ADJUSTMENTS. (9-921-647-11)

SPECIFICATIONS

System

Format	VHS NTSC standard
Video recording system	Rotary head helical scanning
	FM system
Video heads	Double azimuth four heads
Video signal	NTSC color, EIA standards
Tape speed	SP : 33.35 mm/s
	EP : 11.11 mm/s
	LP : 16.67 mm/s, Playback
	only
Maximum recording/playback time
	9hrs. in EP mode
	(with T-180 tape)
Fast-forward and rewind time
	Approx. 3 min.
	(with T-120 tape)

Tuner section

Channel coverage	VHF 2 to 13
	UHF 14 to 69
	CATV A-8 to A-1, A to W,
	W+1 to W+84
Antenna	75 Ω antenna terminal for
	VHF/UHF

Inputs and outputs

LINE-1 IN/LINE-2 IN

VIDEO IN, phono jack

(1 each)

Input signal : 1 Vp-p, 75 Ω,

unbalanced, sync negative

AUDIO IN, phono jacks

(1 each)(SLV-L49MX,

L52PA/PC, L59CL/CS/PR/

VZ and X55 MX),

(2 each)(SLV-L69HF MX,

L72HF PA/PC,

L79HF CL/CS/PR/VZ,

L89HF CL/CS/MX/VZ and

X66HF MX)

Input level : 327 mVrams

Input impedance : more

than 47 kilohms

LINE OUT	VIDEO OUT, phono jack (1)
	Output signal : 1 Vp-p, 75 Ω
	unbalanced, sync negative
	AUDIO OUT, phono jacks (1
	each)(SLV-L49MX,
	L52PA/PC, L59CL/CS/PR/VZ
	and X55 MX),
	(2 each)(SLV-L69HF MX,
	L72HF PA/PC,
	L79HF CL/CS/PR/VZ, L89HF
	CL/CS/MX/VZ and X66HF MX)
	Standard output : 327 mVrms
	Load impedance : 47 kilohms
	Output impedance : less than 10
	kilohms

Timer section

Clock	Quartz locked
Timer indication	12 – hour cycle
Timer setting	8 programs per month (max.)
Power back-up	Built-in self-charging capacitor
	Back-up duration : up to 8 hours
	at a time

General

Power requirements 110 V AC to 240 V AC, 50/60 Hz (SLV-L59CL/CS/PR, L79HF CL/ CL/PR and L89HF CL/CS)

120 V AC, 60 Hz

(SLV-L49 MX, L52 PA/PC, L59 VZ, X55 MX, L69HF MX, L72HF PA/PC, L79HF VZ, L89HF MX/VZ and X66HF MX)

Power consumption	18 W
	(SLV-L49MX, L52PA/PC,
	L59CL/CS/PR/VZ and X55
	MX)
	19 W
	(SLV-L69HF MX, L72HF
	PA/PC, L79HF CL/CS/PR/
	VZ,
	L89HF CL/CS/MX/VZ and
	X66HF MX)
Operating temperature	5°C to 40°C (41°F to 104°F)
Storage temperature	-20°C to 60°C (-4°F to
	140°F)
Dimensions	Approx. 335 × 96 × 289 mm
	(w/h/d)
	including projecting parts
	and controls
Mass	Aoorox. 3.7 kg

Supplied accessories

Remote commander (1) Size AA (R6) batteries (2)

75 Ω coaxial cable with F-type connectors (1) Audio/video cable (3 phono to 3 phono) (1)(SLV-

L69HF MX, L72HF PA/PC, L79HF CL/CS/PR/VZ, L89HF CL/CS/MX/VZ and

X66HF MX only)

Plug adaptor (1)(SLV-L59 CL/CS/PR, L79HF CL/ CS/PR and L89HF CL/CS only)

Design and specifications are subject to change without notice

VIDEO CASSETTE RECORDER

MICROFILM

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE WITH

MARK !ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS

LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE

COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS

APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS

PUBLISHED BY SONY.

SAFETY CHECK-OUT

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer.

1.Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges.

2.Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors.

3.Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.

4.Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

5.Check the B+ voltage to see it is at the values specified.

6.Flexible Circuit Board Repairing

•Keep the temperature of the soldering iron around 270˚C during repairing.

•Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

•Be careful not to apply force on the conductor when soldering or unsoldering.

— 2 —

	TABLE OF CONTENTS
SERVICE NOTE	• DI-70 (DIAL TIMER SWITCH)

1.ERROR CODE INDICATION ········································PRINTED WIRING BOARD ·········4

•DI-70 (DIAL TIMER SWITCH)

1. GENERAL SCHEMATIC DIAGRAMS ··········

• DS-84 (TAPE OPERATION)

Index to parts and controls ······················································

PRINTED WIRING BOARD ·········

Step 1 Unpacking ·························································

• DS-84 (TAPE OPERATION)

Step 2 Setting up the remote commander ·································· 1-3

SCHEMATIC DIAGRAMS ··········

Step 3 Hookups ··························································

• JK-168 (LINE IN) PRINTED WIRING BOARD ····· 4-25 Selecting a language ························································

• JK-168 (LINE IN) SCHEMATIC DIAGRAMS ········

Setting the clock ··························································

• AR-20 (ARC) PRINTED WIRING BOARD ·········

Presetting channels ·························································

• AR-20 (ARC) SCHEMATIC DIAGRAMS ··········

Playing a tape ···························································

Recording TV programs ·······················································

5. INTERFACE, IC PIN FUNCTION

Recording TV programs using the timer ································· 1-12

DESCRIPTION

Playing/searching at various speeds ········································ 1-13 Searching for a selected point on the tape ·······························5-1. SYSTEM CONTROL — MECHANISM1-14 BLOCK

Skip-searching automatically ··················································INTERFACE (MA-341 BOARD IC160) ············1-15 Recording TV programs using the dial timer ··························5-2. SYSTEM CONTROL — SERVO1-15 PERIPHERAL

Setting the recording duration time ·········································IC160)CIRCUIT INTERFACE (MA-341 BOARD -16·······

Checking/changing/canceling timer settings ···························5-3. SYSTEM CONTROL — SYSTEM1-16 CONTROL PERIPH Recording stereo and bilingual programs ································ERAL CIRCUIT INTERFACE 1-16

Adjusting the picture ························································(MA-341 BOARD IC160)

Changing menu options ·······················································5-4. SYSTEM CONTROL AND RF MODULATOR Editing with another VCR ······················································— INPUT SELECTION BLOCK INTERFACE General setup information ······················································(MA-341 BOARD IC160)

Troubleshooting ··························································5-5. SYSTEM CONTROL — VIDEO/RP BLOCK INTER

FACE (MA-341 BOARD IC160) ···············

	5-6. SYSTEM CONTROL — AUDIO BLOCK INTERFACE
2. DISASSEMBLY	(MA-341 BOARD IC160) ··················

5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN 2-1. UPPER CASE, PANEL BLOCK ASSEMBLY ··············· 2-1

FUNCTIONS (MA-341 BOARD IC160) ············

2-2. DS-84, DI-70, JK-168 BOARDS ···································· 2-1

2-3. REAR PANEL ························································

	2-4.		6.	ADJUSTMENTS
		MA-341 BOARD ·······················································
	2-5.		6-1.	MECHANICAL ADJUSTMENTS
		MECHANISM DECK ·····················································
			6-2.	ELECTRICAL ADJUSTMENTS
	2-6. INTERNAL VIEWS ······················································
			1.	PREPARATION BEFORE ADJUSTMENT ···········
	2-7. CIRCUIT BOARDS LOCATION ··································· 2-5
			1-1.	Equipment Required ·····················
	3.	BLOCK DIAGRAMS	1-2.	Equipment Connection ····················
			1-3.	Set-up of Adjustment ·····················
	3-1. OVERALL BLOCK DIAGRAM ···································· 3-1
			1-4.	Alignment Tape ·······················
	3-2. VIDEO BLOCK DIAGRAM ·········································· 3-3
			1-5.	Input/Output Levels and Impedance ··············
	3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM ····· 3-5
	3-4.		1-6.	Adjustment Sequence ····················
		AUDIO/TUNER BLOCK DIAGRAM ··························· 3-7
			2.	POWER SUPPLY CHECK ··················
	3-5. POWER BLOCK DIAGRAM ········································· 3-9
			2-1.	Output Voltage Check (MA-341 Board) ············
	4.	PRINTED WIRING BOARDS AND	3.	SERVO SYSTEM CHECK ··················
		SCHEMATIC DIAGRAMS	3-1. RF Switching Position Adjustment (MA-341 Board) ····· 6-3
			4.	AUDIO SYSTEM ADJUSTMENT ··············
	4-1. FRAME SCHEMATIC DIAGRAM ································ 4-3
	4-2. PRINTED WIRING BOARDS AND SCHEMATIC		4-1.	Hi-Fi Audio System Adjustment (Hi-Fi model only) ····· 6-3
			4-2. HiFi Switching Position Adjustment
		DIAGRAMS ·························································
		• MA-341 (1/7) (VIDEO)		(MA-341 Board) ·······················
			4-3. Normal Audio System Adjustment ···············
		SCHEMATIC DIAGRAMS ················ 4-5
		• MA-341 (2/7) (AUDIO)	4-3-1. ACE Head Adjustment ····················
			4-3-2. E-E Output Level Check ···················
		SCHEMATIC DIAGRAMS ················ 4-7
		• MA-341 (3/7) (SERVO/SYSCON)	4-3-3. Frequency Response Check ··················
			5.	ADJUSTING PARTS LOCATION DIAGRAM ·········
		SCHEMATIC DIAGRAMS ················ 4-9
		• MA-341 (4/7) (AUDIO PROCESS)	7.	REPAIR PARTS LIST
		SCHEMATIC DIAGRAMS ·············· 4-11
		• MA-341 (5/7) (TUNER)	7-1.	EXPLODED VIEWS ····················
			7-1-1. FRONT PANEL AND UPPER CASE SECTION ········
		SCHEMATIC DIAGRAMS ·············· 4-13
		• MA-341 (6/7) (MODE CONTROL)	7-1-2. CHASSIS SECTION ·····················
			7-1-3. MECHANISM DECK SECTION-1 ··············
		SCHEMATIC DIAGRAMS ·············· 4-15
		• MA-341 (7/7) (POWER SUPPLY)	7-1-4. MECHANISM DECK SECTION-2 ··············
			7-1-5. MECHANISM DECK SECTION-3 ··············
		SCHEMATIC DIAGRAMS ·············· 4-17
			7-2.	ELECTRICAL PARTS LIST ·················

• MA-341 (VUDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, POWER SUPPLY)

PRINTED WIRING BOARD ············ 4-19

— 3 —

SERVICE NOTE

1.ERROR CODE INDICATION

•Error codes are indicated using the lower 5 digits in the fluorescent display tube. “At this time, Colon “:” between character is not indicated.”

Mode code indication when the error has occurred.

		Error code
ERROR CODE
0	No error
1	Cam encoder error	Loading direction
2	Cam encoder error	Unloading direction
3	T reel error
4	S reel error
5	Capstan error
6	Drum error
7	Error on initializing
8	Cassette loading error
9	Reserve
MODE CODE
0	Power-on eject		10		FWD x1			20	REW play
1	Power-on initial		11		FWD x2			21	Cas. loading
2	Power-off eject		12		CUE			22	Tape loading
3	Power-off stop		13		PB-pause			23	Power-off loading
4	FF		14		RVS-pause			24	Mecha. error (Power on)
5	REW		15		RVS x1			25	Power-on eject initial
6	REC		16		RVS x2			26	Power-off eject initial
7	RECpause		17		REV			27	APC REC
8	Power-on stop		18		Power-off initial			28	Cas. loading
9	PB		19		Mecha. error (Power off)				(No auto PB check)

— 4 —

SLV-L49/L52/L59/L69HF/L72HF/L79HF/L89HF/X55/X66HF

SECTION 1 GENERAL

This section is extracted from instruction manual.

1-1

1-2

1-3

1-4

1-5

1-6

1-7

1-8

1-9

1-10

1-11

1-12

1-13

1-14

1-15

1-16

1-17