
– 4 –
TABLE OF CONTENTS
Section Title Page Section Title Page
Feature Difference ................................................................... 3
SERVICE NOTE ...................................................................... 5
1. GENERAL
Getting Started .............................................................. 1-1
Basic Operations ........................................................... 1-4
Additional Operations.................................................... 1-8
Editing............................................................................ 1-11
Additional Information ................................................... 1-12
2. DISASSEMBLY
2-1. Upper Case Removal.................................................... 2-1
2-2. GK-12, NK-11, RJ-82 Board Removal .......................... 2-1
2-3. Rear Panel Removal ..................................................... 2-1
2-4. Front Panel Section Removal ....................................... 2-1
2-5. Power Block Removal ................................................... 2-2
2-6. Mechanism Deck Removal ........................................... 2-2
2-7. MA-350 board Removal ................................................ 2-2
2-8. Internal Views................................................................ 2-3
2-9. Circuit Boards Location................................................. 2-4
3. BLOCK DIAGRAMS
3-1. Overall Block Diagram .................................................. 3-1
3-2. Servo/System Control Block Diagram .......................... 3-3
3-3. Video Block Diagram..................................................... 3-5
3-4. Audio Block Diagram..................................................... 3-7
3-5. Tuner Block Diagram..................................................... 3-9
3-6. Mode Control Block Diagram ........................................ 3-11
3-7. Power Block Diagram.................................................... 3-13
4. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
4-1. Frame Schematic Diagram ........................................... 4-3
4-2. Printed Wiring Boards and Schematic Diagrams ......... 4-5
MA-350 Printed Wiring Board ....................................... 4-5
MA-350 (Video, Audio) Schematic Diagram ................. 4-9
MA-350 (System Control) Schematic Diagram ............ 4-13
MA-350 (Servo Control) Schematic Diagram ............... 4-15
MA-350 (Hi-Fi Audio) Schematic Diagram.................... 4-17
MA-350 (I/O) Schematic Diagram................................. 4-19
MA-350 (Tuner) Schematic Diagram ............................ 4-21
MA-350 (FL Drive) Schematic Diagram........................ 4-23
MA-350 (Mode Control) Schematic Diagram ............... 4-25
MA-350 (Power Supply) Schematic Diagram............... 4-27
NK-11 Printed Wiring Board and
Schematic Diagram....................................................... 4-29
GK-12 Printed Wiring Board and
Schematic Diagram....................................................... 4-31
DM-85 Printed Wiring Board and
Schematic Diagrams ..................................................... 4-33
MF-317 Printed Wiring Board and
Schematic Diagram....................................................... 4-35
KK-19 Printed Wiring Board and
Schematic Diagram....................................................... 4-37
DS-85, KK-18 Printed Wiring Boards and
Schematic Diagrams ..................................................... 4-39
RJ-82 Printed Wiring Board and
Schematic Diagram ....................................................... 4-41
HS-921SF/921SF1 Printed Wiring Board ..................... 4-43
HS-921SF/921SF1 Schematic Diagram ....................... 4-45
SR-708/718 Printed Wiring Board ................................ 4-47
SR-708/718 Schematic Diagram .................................. 4-49
5. INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1. System Control-Video Block Interface
(MA-350 BOARD IC161)............................................... 5-1
5-2. System Control-Servo Peripheral Circuit Interface
(MA-350 BOARD IC161)............................................... 5-1
5-3. System Control-Mechanism Block Interface
(MA-350 BOARD IC161)............................................... 5-2
5-4. System Control-Audio Block Interface
(MA-350 BOARD IC161)............................................... 5-3
5-5. Servo/System/Tuner/Timer/MODE Control,
OSD Microprocessor Pin Function
(MA-350 BOARD IC161)............................................... 5-4
5-6. NICAM Processor Pin Function
(NK-11 BOARD IC1)...................................................... 5-5
5-7. ZWEITON Processor Pin Function
(GK-12 BOARD IC001) ................................................. 5-5
6. ERROR CODES ....................................................... 6-1
7. ADJUSTMENTS
7-1. Mechanical Adjustments ............................................... 7-1
7-2. Electrical Adjustments ................................................... 7-1
2-1. Pre-Adjustment Preparations........................................ 7-1
2-1-1. Instruments to be Used............................................ 7-1
2-1-2. Connection ............................................................... 7-1
2-1-3. Set-up of Adjustment................................................ 7-1
2-1-4. Alignment Tapes ....................................................... 7-1
2-1-5. Specified I/O Level and Impedance......................... 7-1
2-1-6. Adjusting Sequence ................................................. 7-2
2-2. Power Supply Adjustments ........................................... 7-2
2-2-1. Power Supply Check................................................ 7-2
2-2-2. +6 V Adjustment ....................................................... 7-2
2-3. Servo System Adjustment............................................. 7-2
2-3-1. RF Switching Position Adjustment........................... 7-2
2-4. Audio System Adjustments ........................................... 7-3
2-4-1. Hi-Fi Audio System Adjustment ............................... 7-3
1. AF Switching Position Adjustment ........................... 7-3
2. Frequency Response Check.................................... 7-3
3. Overall Level Characteristic and
Distortion Factor Check ........................................... 7-4
4. Overall S/N Check.................................................... 7-4
2-4-2. Normal Audio System Adjustment ........................... 7-4
1. ACE Head Adjustment ............................................. 7-4
2. E-E Output Level Check .......................................... 7-4
3. Frequency Responce Check.................................... 7-4
4. Overall Level Characteristic and Distortion
Factor Check ............................................................ 7-5
5. Overall S/N Check.................................................... 7-5
2-5. Tuner System Adjustment ............................................. 7-5
2-5-1. Separation Adjustment............................................. 7-5
2-6. Parts Arrangement Diagram for Adjustments ............... 7-6
8. REPAIR PARTS LIST
8-1. Exploded Views............................................................. 8-1
8-1-1. Front Panel and Cabinet Assemblies
(ED10/EZ10) ............................................................ 8-1
8-1-2. Chassis Assembly (ED10/EZ10).............................. 8-2
8-1-3. Front Panel and Cabinet Assemblies
(ED40/ED60/ED70/EZ40/EZ60/EZ70) .................... 8-3
8-1-4. Chassis Assembly
(ED40/ED60/ED70/EZ40/EZ60/EZ70) .................... 8-5
8-1-5. Mechanism Chassis Assembly (1)........................... 8-6
8-1-6. Mechanism Chassis Assembly (2)........................... 8-7
8-1-7. Mechanism Chassis Assembly (3)........................... 8-8
8-2. Electrical Parts List........................................................ 8-9
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TEL 13942296513 QQ 376315150 892498299
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