SLV-L49, SLV-L52, SLV-L59, SLV-L69HF, SLV-L72HF, SLV-L79HF, SLV-L89HF, SLV-X55, SLV-X66HF - Sony VCR Service Manual (repair manual). Page 3

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1.

ERROR CODE INDICATION ··········································· 4

Index to parts and controls ························································ 1-1
Step 1 Unpacking ······································································ 1-2
Step 2 Setting up the remote commander ·································· 1-3
Step 3 Hookups ········································································· 1-3
Selecting a language ·································································· 1-7
Setting the clock ········································································ 1-8
Presetting channels ···································································· 1-9
Playing a tape ·········································································· 1-11
Recording TV programs ·························································· 1-12
Recording TV programs using the timer ································· 1-12
Playing/searching at various speeds ········································ 1-13
Searching for a selected point on the tape ······························· 1-14
Skip-searching automatically ·················································· 1-15
Recording TV programs using the dial timer ·························· 1-15
Setting the recording duration time ········································· 1-16
Checking/changing/canceling timer settings ··························· 1-16
Recording stereo and bilingual programs ································ 1-16
Adjusting the picture ······························································· 1-17
Changing menu options ··························································· 1-17
Editing with another VCR ······················································· 1-18
General setup information ······················································· 1-18
Troubleshooting ······································································· 1-19

2-1.

UPPER CASE, PANEL BLOCK ASSEMBLY ··············· 2-1

2-2.

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

2-3.

REAR PANEL ································································· 2-2

2-4.

MA-341 BOARD ···························································· 2-2

2-5.

MECHANISM DECK ····················································· 2-3

2-6.

INTERNAL VIEWS ························································ 2-4

2-7.

CIRCUIT BOARDS LOCATION ··································· 2-5

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.

AUDIO/TUNER BLOCK DIAGRAM ··························· 3-7

3-5.

POWER BLOCK DIAGRAM ········································· 3-9

4-1.

FRAME SCHEMATIC DIAGRAM ································ 4-3

4-2.

PRINTED WIRING BOARDS AND SCHEMATIC
DIAGRAMS ···································································· 4-5
• MA-341 (1/7) (VIDEO)

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

• MA-341 (2/7) (AUDIO)

SCHEMATIC DIAGRAMS ················ 4-7

• MA-341 (3/7) (SERVO/SYSCON)

SCHEMATIC DIAGRAMS ················ 4-9

• MA-341 (4/7) (AUDIO PROCESS)

SCHEMATIC DIAGRAMS ·············· 4-11

• MA-341 (5/7) (TUNER)

SCHEMATIC DIAGRAMS ·············· 4-13

• MA-341 (6/7) (MODE CONTROL)

SCHEMATIC DIAGRAMS ·············· 4-15

• MA-341 (7/7) (POWER SUPPLY)

SCHEMATIC DIAGRAMS ·············· 4-17

• MA-341 (VUDEO, AUDIO, SERVO/SYSTEM

CONTROL, TUNER, POWER SUPPLY)
PRINTED WIRING BOARD ············ 4-19

• DI-70 (DIAL TIMER SWITCH)

PRINTED WIRING BOARD ············ 4-22

• DI-70 (DIAL TIMER SWITCH)

SCHEMATIC DIAGRAMS ·············· 4-22

• DS-84 (TAPE OPERATION)

PRINTED WIRING BOARD ············ 4-23

• DS-84 (TAPE OPERATION)

SCHEMATIC DIAGRAMS ·············· 4-23

• JK-168 (LINE IN) PRINTED WIRING BOARD ····· 4-25
• JK-168 (LINE IN) SCHEMATIC DIAGRAMS ········ 4-25
• AR-20 (ARC) PRINTED WIRING BOARD ············ 4-27
• AR-20 (ARC) SCHEMATIC DIAGRAMS ··············· 4-28

5-1.

SYSTEM CONTROL — MECHANISM BLOCK
INTERFACE (MA-341 BOARD IC160) ························ 5-1

5-2.

SYSTEM CONTROL — SERVO PERIPHERAL
CIRCUIT INTERFACE (MA-341 BOARD IC160) ······· 5-2

5-3.

SYSTEM CONTROL — SYSTEM CONTROL PERIPH
ERAL CIRCUIT INTERFACE
(MA-341 BOARD IC160) ··············································· 5-3

5-4.

SYSTEM CONTROL AND RF MODULATOR
— INPUT SELECTION BLOCK INTERFACE
(MA-341 BOARD IC160) ··············································· 5-3

5-5.

SYSTEM CONTROL — VIDEO/RP BLOCK INTER
FACE (MA-341 BOARD IC160) ···································· 5-3

5-6.

SYSTEM CONTROL — AUDIO BLOCK INTERFACE
(MA-341 BOARD IC160) ··············································· 5-3

5-7.

SERVO/SYSTEM CONTROL MICROPROCESSOR PIN
FUNCTIONS (MA-341 BOARD IC160) ······················· 5-4

6-1.

MECHANICAL ADJUSTMENTS ································· 6-1

6-2.

ELECTRICAL ADJUSTMENTS ··································· 6-1

1.

PREPARATION BEFORE ADJUSTMENT ··················· 6-1

1-1.

Equipment Required ························································ 6-1

1-2.

Equipment Connection ···················································· 6-1

1-3.

Set-up of Adjustment ······················································· 6-1

1-4.

Alignment Tape ······························································· 6-1

1-5.

Input/Output Levels and Impedance ······························· 6-2

1-6.

Adjustment Sequence ······················································ 6-2

2.

POWER SUPPLY CHECK ············································· 6-2

2-1.

Output Voltage Check (MA-341 Board) ························· 6-2

3.

SERVO SYSTEM CHECK ············································· 6-3

3-1.

RF Switching Position Adjustment (MA-341 Board) ····· 6-3

4.

AUDIO SYSTEM ADJUSTMENT ································· 6-3

4-1.

Hi-Fi Audio System Adjustment  (Hi-Fi model only) ····· 6-3

4-2.

HiFi Switching Position Adjustment
(MA-341 Board) ······························································ 6-4

4-3.

Normal Audio System Adjustment ·································· 6-4

4-3-1. ACE Head Adjustment ···················································· 6-4
4-3-2. E-E Output Level Check ················································· 6-4
4-3-3. Frequency Response Check ············································· 6-4
5.

ADJUSTING PARTS LOCATION DIAGRAM ············· 6-6

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