Akai AP-M7

<25RO€
vil.
Vill.
SECTION 1
SERVICE MANUAL
TABLE OF CONTENTS
SPECIFICATIONS 4
DISMANTLING OF UNIT 5
CONTROLS 6
PRINCIPAL PARTS LOCATION 7
CIRCUIT DESCRIPTION ........ 06 0c cee cee cette ee 8
5-1. THE PERIPHERAL CIRCUIT DIAGRAM OF
MI-COM (ICS LM6502A-111) ... 8
5-2. DESCRIPTION OF MI-COM ICS (LM6502A-111) TERMINALS .. 8
5-3, DESCRIPTION OF LED DISPLAY 10
5-4. DESCRIPTION OF SIZE LED DISPLAY
5-5. QUICK REPEAT OPERATION
5-6. F/V SERVO LINEAR TRACKING SYSTEM
5-7, ARM LIFTER CIRCUIT
5-8. DETECTION OF TONE ARM POSITION
5-9. MISCELLANEOUS REMARKS
MECHANICAL ADJUSTMENT
6-1. ORDINARY MECHANICAL ADJUSTMENTS
6-2. LEAD-IN POSITION ADJUSTMENT .........
6-3. ARM ELEVATION POSITION ADJUSTMENT
ELECTRICAL ADJUSTMENT...............
7-1. ARM SENSOR VOLTAGE ADJUSTMENT
7-2. SPEED ADJUSTMENT
CLASSIFICATION OF VARIOUS P.C BOARDS 18
8-1. P.C BOARD TITLES AND IDENTIFICATION NUMBERS 18
8-2. COMPOSITION OF VARIOUS P.C BOARDS 19
For basic adjustments, measuring methods, and operating principles, refer to GENERAL TECHNICAL
MANUAL,
SERVICE MANUAL AP-M7/S