Sony SLV-AX10, SLV-AX20, SLV-N50, SLV-N60, SLV-N70 Service manual

...

SLV-AX10/AX20/N50/N60/N70/N80/

LX4/LX5/LX6S/LX7S/LX8S

RMT-V266A/V266B/V292/V292A/V293/V294

SERVICE MANUAL

US Model

SLV-AX10/AX20/N50/N60/N70/N80

Canadian Model

SLV-N50/N60/N70/N80

Mexican Model

SLV-LX4/LX5/LX6S(MX)/

LX7S(MX)/LX8S(MX)

Chilean Model

SLV-LX5(CL,CS)/LX7S(CL,CS)/

LX8S(CS)

Refer to the SERVICE MANUAL of VHS MECHANICAL ADJUSTMENT

for

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

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 (1 EP: 11.11 mm/s ( LP: 16.67 mm/s (

playback only

Maximum recording/playback time

8 hr

s. in EP mode (with T-160 tape) (SLV-AX10/AX20/N50/N60/N70/N80) 9 hrs. in EP mode (with T-180 tape) (SLV-LX4/LX5/LX6S/LX7S/LX8S)

Fast-forward and rewind time

Appr

ox. 3 min. (with T-120 tape)

inches/s)

inches/s),

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-ohm antenna terminal for VHF/UHF

Inputs and outputs

LINE-1 IN and -2 IN

VIDEO IN, phono jack (1 each) Input signal: 1 Vp-p, 75 ohms, unbalanced, sync

negative

UDIO IN, phono jacks (2 each)

A (SLV-AX10/AX20/N50/N60/N70/N80/LX6S/ LX7S/LX8S) AUDIO IN, phono jack (1 each) (SLV-LX4/LX5) Input level: 327 mVrms Input impedance: more than 47 kilohms

LINE OUT

VIDEO OUT, phono jack (1) Output signal: 1 Vp-p, 75 ohms, unbalanced, sync

negative AUDIO OUT, phono jacks (2) (SLV-AX10/AX20/N50/N60/N70/N80/LX6S/ LX7S/LX8S) AUDIO OUT, phono jack (1) (SLV-LX4/LX5) Standard output: 327 mVrms Load impedance: 47 kilohms Output impedance: less than 10 kilohms

S-LINK (CONTROL S IN) (SLV-N80 only)

Mini jack (1)

CABLE BOX CONTROL (CONTROL S OUT) (SLVN80 only)

Stereo mini jack (plug in power) (1)

Timer section

Clock

Quartz locked

Timer indication

12-hour cycle

Timer setting

8 programs (max.)

Power back-up

Built-in self-charging capacitor Back-up duration: up to 1 hour at a time

General

Power requirements

12 (SLV-AX10/AX20/N50/N60/N70/N80/LX4(MX)/ LX5(MX,PA,PC,VZ)/LX6S/LX7S(MX,PA,PC,VZ)/ LX8S(MX)) 110 V AC – 240 V AC, 50/60 Hz (SLV-LX5(CL,CS)/LX7S(CL,CS)/LX8S(CS))

Photo : SL V -N80

RMT-V292

HiFi model : SLV-AX10/AX20/N50/N60/N70/N80/LX6S/LX7S/LX8S Mono model: SLV-LX4/LX5

SPECIFICATIONS

0 V AC, 60 Hz

Panama Model

Venezuelan Model

SLV-LX5(PA,PC,VZ)/LX7S(PA,PC,VZ)

S MECHANISM

Power consumption

24 W (SLV-AX10/AX20/N50/N60/N70/N80) 18 W (SLV-LX4/LX5/LX6S/LX7S/LX8S)

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

App

rox. 430 × 97 × 290.5 mm (w/h/d)

(

Approx. 17 × 3 × 11 inches) including

(SLV-N70/N80/LX8S) Approx. 355 × 96 × 285 mm (w/h/d) (Approx. 14 × (SLV-AX10/AX20/N50/N60/LX4/LX5/LX6S/LX7S) projecting parts and controls

Mass

Approx. 4.1 kg (9 lb 1 oz) (SLV-N70/N80/LX8S) Approx. 3.6 kg (7 lb 15 oz) (SLV-AX10/AX20/N50/N60/LX4/LX5/LX6S/LX7S)

Supplied accessories

Remote commander (1) Size AA (R6) batteries (2) 75-ohm coaxial cable with F-type connectors (1) Audio/video cable (3-phono, 1-mini to 3-phono, 1-mini)

(1) (SLV-N80 only) Audio/video cable (3-phono to 3-phono) (1) (SLV-N70

only)

Design and specifications are subject to change without notice.

NERGY STAR® is a U.S. registered mark.

NERGY STAR® Partner, Sony Corporation has

As an determined that this product meets the guidelines for energy efficiency.

781

3 × 11 inches) including

NERGY STAR®

VIDEO CASSETTE RECORDER

MICROFILM

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, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

5. Check the line cord for cracks and abrasion. Recommend the replacement of any such line cord to the customer.

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

7. Check the antenna terminals, metal trim, "metallized" knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below.

T o Exposed Metal

Parts on Set

0.15 µF

1.5 kΩ

Voltmeter (0.75 V)

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5mA (500 microampers). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA TW-540A. Follo w the manufacturers' instructions to use these instruments.

2. A battery-operated A C milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC v oltmeter. The "limit" indication is 0.75V, so analog meters must have an accurate lo w v oltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V A C range are suitable. (See Fig. A)

Earth Ground

Fig. A. Using an A C v oltmeter to check A C leakage.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

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SERVICE NOTE

1. ERROR CODE INDICATION··········································· 5

1 GENERAL

Getting Started···········································································1-1

Step 1 : Unpacking ································································1-1 Step 2 : Setting up the remote commander ····························1-1 Step 3 : Hookups····································································1-2 Selecting a language ······························································1-7 Setting the clock ····································································1-7 Setting up the cable box control ············································1-9 Presetting channels ······························································1-11 Setting up the VCR Plus+ GOLD system····························1-12 Setting up the VCR Plus+ system········································1-14

Basic Operations······································································1-15

Playing a tape·······································································1-15 Recording TV programs ······················································1-16 Recording TV programs using the Dial Timer ···················· 1-17 Recording TV programs using the VCR Plus+ or VCR Plus+ GOLD system··················································· 1-18 Setting the timer manually··················································· 1-19

Additional Operations ·····························································1-19

Playing/searching at various speeds ····································1-19 Setting the recording duration time ·····································1-20 Checking/changing/canceling timer settings ·······················1-20 Recording stereo and bilingual programs ···························· 1-21 Searching using the Tape Guide function ····························1-21 Searching using the index function······································1-22 Searching for a selected point on the tape ···························1-22 Locating a channel by Station ID ········································1-23 Creating a favorite channel list with Station ID ··················1-23 Adjusting the picture ··························································· 1-23 Changing menu options ·······················································1-24 Editing with another VCR ···················································1-24

Additional Information ····························································1-25

General setup information ···················································1-25 Troubleshooting ···································································1-25 Index to parts and controls···················································1-26

2 DISASSEMBLY

2-1. CASE, FRONT PANEL BLOCK ASSEMBLY ··············2-1 2-2. DM-89 BOARD, DI-74 BOARD, JK-178 BOARD,

MF-319 BOARD ·····························································2-1 2-3. REAR PANEL································································· 2-2 2-4. MA-370 BOARD ····························································2-2 2-5. MECHANISM DECK ·····················································2-3 2-6. INTERNAL VIEWS························································2-4 2-7. CIRCUIT BOARDS LOCATION ···································2-5

3 BLOCK DIAGRAMS

3-1. OVERALL BLOCK DIAGRAM ····································3-1 3-2. VIDEO BLOCK DIAGRAM ··········································3-3 3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM ·····3-5 3-4. TUNER BLOCK DIAGRAM ·········································3-7 3-5. AUDIO BLOCK DIAGRAM··········································3-9 3-6. POWER BLOCK DIAGRAM·······································3-11

4 PRINTED WIRING BOARDS AND

SCHEMATIC DIAGRAMS

4-1. FRAME SCHEMATIC DIAGRAM································4-3 4-2. PRINTED WIRING BOARDS AND SCHEMATIC

DIAGRAMS····································································4-5

• MA-370 (VIDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, POWER)

PRINTED WIRING BOARD ························· 4-5

• MA-370 (1/8)(REC/PB HEAD AMP)

SCHEMATIC DIAGRAM ······························4-7

• MA-370 (2/8)(Y/C, AUDIO PROCESS) SCHEMATIC DIAGRAM ······························4-9

• MA-370 (3/8)(SERVO/SYSTEM CONTROL) SCHEMATIC DIAGRAM ····························4-11

• MA-370 (4/8)(AUDIO PROCESS) SCHEMATIC DIAGRAM ····························4-13

• MA-370 (5/8)(TUNER) SCHEMATIC DIAGRAM ····························4-15

• MA-370 (6/8)(DISPLAY CONTROL) SCHEMATIC DIAGRAM ····························4-17

• MA-370 (7/8)(POWER SUPPLY) SCHEMATIC DIAGRAM ····························4-19

• MA-370 (8/8)(VSET) SCHEMATIC DIAGRAM ····························4-21

• JK-178 (LINE-2 IN) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM (AX10/AX20/N50/N60/LX4/LX5/ LX6S/LX7S) ················································4-29

• JK-191 (LINE-2 IN) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM (N70/N80/LX8S only) ··································4-31

• DM-89 (FUNCTION) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM (N70/N80/LX8S only) ··································4-33

• MF-319 (SIRCS) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM (N70/N80/LX8S only) ··································4-35

• DI-74 (DIAL TIMER) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM (EXCEPT: AX10/N50) ·································4-36

5 INTERFACE, IC PIN FUNCTION

DESCRIPTION

5-1. SYSTEM CONTROL — MECHANISM BLOCK

INTERFACE (MA-370 BOARD IC160) ························ 5-1

5-2. SYSTEM CONTROL — SERVO PERIPHERAL

CIRCUIT INTERFACE (MA-370 BOARD IC160) ······· 5-1

5-3. SYSTEM CONTROL — SYSTEM CONTROL

PERIPHERAL CIRCUIT INTERFACE (MA-370 BOARD IC160)···············································5-2

5-4. SYSTEM CONTROL AND RF MODULATOR

— INPUT SELECTION BLOCK INTERFACE (MA-370 BOARD IC160)···············································5-2

5-5. SYSTEM CONTROL — VIDEO/RP BLOCK

INTERFACE (MA-370 BOARD IC160) ························ 5-2

5-6. SYSTEM CONTROL — AUDIO BLOCK INTERFACE

(MA-370 BOARD IC160)···············································5-2

5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR

PIN FUNCTIONS (MA-370 BOARD IC160)················5-3

6 ADJUSTMENTS

6-1 MECHANICAL ADJUSTMENTS ·································6-1 6-2. ELECTRICAL ADJUSTMENTS ···································6-1 2-1. PREPARATION BEFORE ADJUSTMENT ···················6-1 2-1-1.Equipment Required ························································6-1 2-1-2.Equipment Connection ····················································6-1 2-1-3.Set-up of Adjustment·······················································6-1 2-1-4.Alignment Tape ·······························································6-1 2-1-5.Input/Output Levels and Impedance ·······························6-2 2-1-6.Adjustment Sequence ······················································6-2 2-2. POWER SUPPLY CHECK ·············································6-2 2-2-1.Output Voltage Check (MA-370 Board) ·························6-2

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2-3. SERVO SYSTEM CHECK·············································6-3 2-3-1.RF Switching Position Adjustment (MA-370 Board) ·····6-3 2-4. AUDIO SYSTEM ADJUSTMENT································· 6-3 2-4-1.Hi-Fi Audio System Adjustment (Hi-Fi model only) ······ 6-3 2-4-2.HiFi Switching Position Adjustment (MA-370 Board)···6-4 2-4-3.Normal Audio System Adjustment··································6-4 2-4-4.ACE Head Adjustment ····················································6-4 2-4-5.E-E Output Level Check ·················································6-4 2-4-6.Frequency Response Check·············································6-4 2-5. ADJUSTING PARTS LOCATION DIAGRAM ·············6-6

7 REPAIR PARTS LIST

7-1. EXPLODED VIEWS ······················································7-1 7-1-1.FRONT PANEL AND UPPER CASE SECTION ··········7-1 7-1-2.CHASSIS SECTION······················································· 7-2 7-1-3.MECHANISM DECK SECTION-1 ······························· 7-3 7-1-4.MECHANISM DECK SECTION-2 ······························· 7-4 7-1-5.MECHANISM DECK SECTION-3 ······························· 7-5 7-2. ELECTRICAL PARTS LIST ··········································7-6

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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 REC- pause 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)

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