Page 2
-“ 3 -“ TABLE OF CONTENTS
Section Title Page Section Title Page
Service Note ............................................................................ 4
1. GENERAL
Index to Parts and Controls .......................................... 1-1
Getting Started .............................................................. 1-3
Hookups ........................................................................ 1-3
Playing Discs ................................................................. 1-7
Searching for a Scene ................................................... 1-10
Viewing Information About the Disc .............................. 1-10
Sound Adjustments ....................................................... 1-11
Enjoying Movies ............................................................ 1-12
Using Various Additional Functions .............................. 1-12
Settings and Adjustments ............................................. 1-14
Additional Information ................................................... 1-16
2. DISASSEMBLY
2-1. Upper Case, Reinforcement (C) Removal.................... 2-1
2-2. Front Panel Section Removal ........................................ 2-1
2-3. Rear Panel Removal ..................................................... 2-1
2-4. MB-98 Board Removal .................................................. 2-1
2-5. AV-57 Board Removal ................................................... 2-2
2-6. ER-16 Board Removal (AEP, UK) ................................. 2-2
2-7. Table Assy Removal ..................................................... 2-2
2-8. Chassis Assy ................................................................ 2-2
2-9. CN-142 Board Removal ................................................ 2-3
2-10. Loading Motor Assy (M851) Removal .......................... 2-3
2-11. BU Holder Assy Removal ............................................. 2-3
2-12. Optical Pick-up Removal ............................................... 2-3
2-13. Power Block Removal ................................................... 2-4
2-14. Internal Views ................................................................ 2-5
2-15. Circuit Boards Location ................................................. 2-6
3. BLOCK DIAGRAMS
3-1. Overall Block Diagram ................................................... 3-1
3-2. RF/Servo Block Diagram ............................................... 3-3
3-3. Signal Processor Block Diagram .................................. 3-5
3-4. System Control Block Diagram ..................................... 3-7
3-5. Video Block Diagram ..................................................... 3-9
3-6. Audio Block Diagram ..................................................... 3-11
3-7. Interface Control Block Diagram ................................... 3-13
3-8. Power 1 Block Diagram ................................................. 3-15
3-9. Power 2 Block Diagram ................................................. 3-17
4. PRINTED WIRING BOARDS AND SCHEMATIC
DIAGRAMS
4-1. Frame Schematic Diagram ............................................ 4-3
4-2. Printed Wiring Boards and Schematic Diagrams ......... 4-7
MB-98 Printed Wiring Board ......................................... 4-7
MB-98 (RF AMP, SERVO) Schematic Diagram ............ 4-11
MB-98 (ARP, SERVO DSP) Schematic Diagram .......... 4-13
MB-98 (AV DECODER) Schematic Diagram ................ 4-15
MB-98 (BNR) Schematic Diagram ................................ 4-17
MB-98 (DRIVE) Schematic Diagram ............................ 4-19
MB-98 (SYSTEM CONTROL)
Schematic Diagram ....................................................... 4-21
MB-98 (CLOCK GENERATOR)
Schematic Diagram ....................................................... 4-23
MB-98 (AUDIO DSP, D/A CONVERTER)
Schematic Diagram ....................................................... 4-25
AV-57 Printed Wiring Board .......................................... 4-29
AV-57 (VIDEO BUFFER) Schematic Diagram .............. 4-31
AV-57 (AUDIO AMP) Schematic Diagram .................... 4-33
ER-16 Printed Wiring Board (AEP, UK) ........................ 4-35
ER-16 Schematic Diagram (AEP, UK) .......................... 4-37
IF-81 Printed Wiring Board ........................................... 4-39
IF-81 Schematic Diagram ............................................. 4-41FL-119, FR-178, SW-353 Printed Wiring Boards ......... 4-43
FL-119 (FUNCTION SWITCH),
FR-178 (FUNCTION SWITCH),
SW-353 (FUNCTION SWITCH) Schematic Diagram ... 4-45
CN-142, LM-63 Printed Wiring Board ........................... 4-47
CN-142 (CONNECTION), LM-63 (LOADING MOTOR)
Schematic Diagram ....................................................... 4-49
SE-122, TM-125 Printed Wiring Board ......................... 4-51
SE-122 (SENSOR), TM-125 (TURNTABLE MOTOR)
Schematic Diagram ....................................................... 4-53
MPN4801 Printed Wiring Board (US, CND) ................. 4-55
MPN4801 Schematic Diagram (US, CND) ................... 4-57
MPN4901 Printed Wiring Board (AEP, UK, AUS, PX) .. 4-59
MPN4901 Schematic Diagram (AEP, UK, AUS, PX) .... 4-61
5. IC PIN FUNCTION DESCRIPTION
5-1. System Control Pin Function
(MB-98 Board IC103) .................................................... 5-1
6. TEST MODE
6-1. General Description ...................................................... 6-1
6-2. Starting Test Mode ........................................................ 6-1
6-3. Syscon Diagnosis .......................................................... 6-1
6-4. Drive Auto Adjustment .................................................. 6-5
6-5. Drive Manual Operation ................................................ 6-7
6-6. Mecha Aging ................................................................. 6-10
6-7. Emergency History ........................................................ 6-10
6-8. Version Information ....................................................... 6-11
6-9. Video Level Adjustment ................................................ 6-11
6-10. IF CON Self Diagnostic Function .................................. 6-11
6-11. Troubleshooting ............................................................. 6-18
7. ELECTRICAL ADJUSTMENT
7-1. Power Supply Check ..................................................... 7-1
1. MPN4801/MPN4901 Boards ......................................... 7-1
2. +11 V Adjustment .......................................................... 7-1
3. +5 V Adjustment ............................................................ 7-1
4. -“11 V Adjustment .......................................................... 7-1
7-2. Adjustment of Video System ......................................... 7-2
1. Video Level Adjustment (MB-98 Board) ....................... 7-2
2. Checking S Video Output S-Y ....................................... 7-2
3. Checking S Video Output S-C ....................................... 7-2
4. Checking Component Video Output Y .......................... 7-2
5. Checking Component Video Output B-Y ...................... 7-3
6. Checking Component Video Output R-Y ...................... 7-3
7. Checking RGB Output R ............................................... 7-3
8. Checking RGB Output G ............................................... 7-3
9. Checking RGB Output B ............................................... 7-4
7-3. Adjustment Related Par ts Arrangement ....................... 7-6
8. REPAIR PARTS LIST
8-1. Exploded Views ............................................................. 8-1
8-1-1. Main Assembly ......................................................... 8-1
8-1-2. Front Panel Assembly .............................................. 8-3
8-1-3. Table Assembly ........................................................ 8-4
8-1-4. Chassis Assembly .................................................... 8-5
8-2. Electrical Parts List ....................................................... 8-6
- Abbreviation
AUS : Australian
CND : Canadian
