Page 2
3
1. SERVICING NOTE ......................................................... 4
2. GENERAL
Looking at the Controls ...................................................... 5
Record an MD ..................................................................... 5
Playing an MD right away .................................................. 6
3. DISASSEMBLY
3-1. Case (Lower) Assy .............................................................. 7
3-2. Case (Upper) Assy .............................................................. 7
3-3. LCD Module ....................................................................... 8
3-4. Main Board ......................................................................... 8
3-5. MD Mechanism Deck ......................................................... 9
3-6. Service Assy, OP ................................................................. 9
3-7. Holder Assy ....................................................................... 10
3-8. Motor Flexible Board ........................................................ 10
3-9. Motor, DC (M602) ............................................................ 11
3-10. Motor, DC (M601), Motor, DC (M603) .................... 11
4. TEST MODE
4-1. Outline ............................................................................... 12
4-2. Setting Method of Test Mode ............................................ 12
4-3. Operation in Setting the Test Mode ................................... 12
4-4. Releasing the Test Mode ................................................... 12
4-5. Configuration of Test Mode .............................................. 13
4-6. Manual Mode .................................................................... 13
4-7. Overall Adjustment Mode ................................................. 14
4-8. Self-Diagnosis Result Display Mode ................................ 14
4-9. Reset the Error Display Code ............................................ 15
4-10. Sound Skip Check Result Display Mode .......................... 16
4-11. Key Check Mode ............................................................... 16
TABLE OF CONTENTS
5. ELECTRICAL ADJUSTMENTS
5-1. Outline ............................................................................... 18
5-2. Precautions for Adjustment ............................................... 18
5-3. Adjustment Sequence ........................................................ 18
5-4. NV Reset ........................................................................... 18
5-5. Power Supply Manual Adjustment .................................... 19
5-6. Temperature Correction ..................................................... 20
5-7. Laser Power Check ........................................................... 20
5-8. Overall Adjustment Mode ................................................. 21
5-9. Resume Clear .................................................................... 23
5-10. Patch Data Rewriting when Nonvolatile
Memory was Replaced ...................................................... 23
6. DIAGRAMS
6-1. IC Pin Function Description ............................................ 30
6-2. Block Diagram - Servo Section - ..................................... 36
6-3. Block Diagram - Audio Section - .................................... 37
6-4. Block Diagram - System Control/Power Section - .......... 38
6-5. Printed Wiring Board - Main Section - ............................ 40
6-6. Schematic Diagram - Main Section (1/3) - ...................... 42
6-7. Schematic Diagram - Main Section (2/3) - ...................... 43
6-8. Schematic Diagram - Main Section (3/3) - ...................... 44
7. EXPLODED VIEWS
7-1. Case (Lower) Section ........................................................ 49
7-2. Case (Upper) Section ........................................................ 50
7-3. Chassis Section ................................................................. 51
7-4. MD Mechanism Deck Section .......................................... 52
8. ELECTRICAL PARTS LIST ...................................... 53
MZ-R500/R500PC
