SLV-999HF, SLV-M11HF, SLV-M91HF - Sony VCR Service Manual (repair manual). Page 4

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5-1.

SYSTEM CONTROL —
VIDEO BLOCK INTERFACE
(MA-360 BOARD IC161) ··············································· 5-1

5-2.

SYSTEM CONTROL —
SERVO PERIPHERAL CIRCUIT INTERFACE
(MA-360 BOARD IC161) ··············································· 5-1

5-3.

SYSTEM CONTROL —
MECHANISM INTERFACE
(MA-360 BOARD IC161) ··············································· 5-2

5-4.

SYSTEM CONTROL —
SYSTEM CONTROL PERIPHERAL CIRCUIT
INTERFACE (MA-360 BOARD IC161) ························ 5-2

5-5.

SYSTEM CONTROL —
AUDIO BLOCK INTERFACE
(MA-360 BOARD IC161) ··············································· 5-2

5-6.

SERVO/SYSTEM CONTROL MICROPROCESSOR
PIN FUNCTIONS
(MA-360 BOARD IC161) ··············································· 5-3

5-7.

TUNER/TIMER CONTROL MICROPROCESSOR
PIN FUNCTIONS
(MA-360 BOARD IC460) ··············································· 5-4

6-1.

MECHANICAL ADJUSTMENT ··································· 6-1

6-2.

ELECTRICAL ADJUSTMENT ······································ 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. Setup for 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. Power Supply Voltage Check (MA-360 board) ··············· 6-2
2-3.

SERVO SYSTEM ADJUSTMENT ································· 6-3

2-3-1. RF Switching Position Adjustment

(MA-360 Board) ······························································ 6-3

2-3-2. Hi-Fi Switching Position Adjustment

(MA-360 Board) ······························································ 6-3

2-4.

VIDEO SYSTEM CHECK ············································· 6-4

2-4-1. Playback Level Check (MA-360 board) ·························· 6-4
2-4-2. Sync AGC Check (MA-360 board) ································· 6-4
2-4-3. Deviation Check ······························································ 6-4
2-5.

AUDIO SYSTEM ADJUSTMENT ································· 6-5

2-5-1. Hi-Fi Audio System Check ·············································· 6-5
1.

E-E Output Level Check ················································· 6-5

2.

Overall Level Characteristics Check ······························· 6-5

2-5-2. Normal Audio System Adjustment ·································· 6-5
1.

ACE Head Adjustment ···················································· 6-5

2.

Frequency Response Check ············································· 6-5

2-6.

Laser Link System Adjustment ······································· 6-6

2-6-1. Laser Link video output Level Adjustment

(LR-15 Board) ································································· 6-6

7-1

EXPLODED VIEWS ······················································ 7-1

7-1-1. FRONT PANEL ASSEMBLY AND

UPPER CASE SECTION ··············································· 7-1

7-1-2. CHASSIS SECTION ······················································· 7-2
7-1-3. MECHANISM DECK-1 ················································· 7-3
7-1-4. MECHANISM DECK-2 ················································· 7-4
7-1-5. MECHANISM DECK-3 ················································· 7-5
7-2.

ELECTRICAL PARTS LIST ·········································· 7-6