Sony RMT-V259M, Руководство по обслуживанию

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— 4 —
• JK-195 (LINE 2 IN)
SCHEMATIC DIAGRAM ···························· 4-46
• POWER BLOCK (SRV939EK)
PRINTED WIRING BOARD ······················· 4-47
• POWER BLOCK (SRV939EK)
SCHEMATIC DIAGRAM ···························· 4-49
5. INTERFACE, IC PIN FUNCTION
DESCRIPTION
5-1. SYSTEM CONTROL — VIDEO BLOCK INTERFACE
(MA-388 Board IC160) ··················································· 5-1
5-2. SYSTEM CONTROL — SERVO PERIPHERAL
CIRCUIT INTERFACE (MA-388 Board IC160) ··········· 5-1
5-3. SYSTEM CONTROL — MECHANISM INTERFACE
(MA-388 Board IC160) ··················································· 5-2
5-4. SYSTEM CONTROL — SYSTEM CONTROL
PERIPHERAL CIRCUIT INTERFACE
(MA-388 Board IC160) ··················································· 5-2
5-5. SYSTEM CONTROL — AUDIO BLOCK INTERFACE
(MA-388 Board IC160) ··················································· 5-2
5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR
PIN FUNCTION
(MA-388 Board IC160 CXP8846-022Q) ························ 5-3
5-7. MODE CONTROL MICROPROCESSOR PIN
FUNCTION
(FR-169 Board IC180 uPD703033AYGF-M02-3B) ······· 5-4
5-8. SMART FILE CONTROL MICROPROCESSOR PIN
FUNCTION (ML-21 Board IC902 CXP84632-079Q) ··· 5-5
5-9. SMART FILE TELETEXT MICROCOMPUTER PIN
FUNCTION (ML-21 Board IC950 SDA5250M-2) ········ 5-6
6. ADJUSTMENTS
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-388 board) ··············· 6-2
2-3.
SYSTEM CONTROL SYSTEM CHECK ······················ 6-3
2-3-1. Clock Oscillation Level Check (MA-388 board) ············ 6-3
2-4.
SERVO SYSTEM CHECK ············································· 6-3
2-4-1. RF Switching Position Check (MA-388 board) ·············· 6-3
2-4-2. Hi-Fi Switching Position Check (MA-388 board) ·········· 6-3
2-5.
VIDEO SYSTEM CHECK ············································· 6-4
2-5-1. Playback Level Check (MA-388 board) ·························· 6-4
2-5-2. Sync AGC Check (MA-388 board) ································· 6-4
2-6.
AUDIO SYSTEM ADJUSTMENT ································· 6-4
2-6-1. Hi-Fi Audio System Check (MA-388 board) ·················· 6-4
2-6-1-1. Overall Audio Output Level Check ····························· 6-4
2-6-1-2. Overall Audio Distorsion Factor Check ······················ 6-5
2-6-1-3. Overall Noise Level Check ·········································· 6-5
2-6-1-4. HiFi Audio Frequency Response Check ······················ 6-5
2-6-1-5. Audio PB Level Check ················································ 6-5
2-6-2. Normal Audio System Adjustment ·································· 6-6
2-6-2-1. ACE Head Adjustment ················································· 6-6
2-6-2-2. Frequency Response Check ········································· 6-6
2-6-2-3. E-E Output Level Check ·············································· 6-6
7. REPAIR PARTS LIST
7-1. EXPLODED VIEWS ······················································ 7-1
7-1-1. FRONT PANEL AND UPPER CASE SECTION ·········· 7-2
7-1-2. CHASSIS SECTION ······················································· 7-4
7-1-3. MECHANISM DECK SECTION-1 ······························· 7-5
7-1-4. MECHANISM DECK SECTION-2 ······························· 7-6
7-1-5. MECHANISM DECK SECTION-3 ······························· 7-7
7-2.
ELECTRICAL PARTS LIST ·········································· 7-8