– 4 –
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
Feature Difference ................................................................... 3
SERVICE NOTE ...................................................................... 5
1.
GENERAL
Getting Started .............................................................. 1-1
Basic Operations ........................................................... 1-8
Search Operations ........................................................ 1-12
Additional Operations .................................................... 1-14
Additional Information ................................................... 1-16
2.
DISASSEMBLY
2-1.
Case Front Panel Block Assembly ................................ 2-1
2-2.
DM-98, DI-81 Board and FJ-31 Board .......................... 2-1
2-3.
Rear Panel ..................................................................... 2-2
2-4.
MA-402 Board ............................................................... 2-2
2-5.
Mechanism Deck ........................................................... 2-3
2-6.
Internal Views ................................................................ 2-4
2-7.
Circuit Boards Location ................................................. 2-5E
3.
BLOCK DIAGRAMS
3-1.
Overall Block Diagram ................................................... 3-1
3-2.
Video Block Diagram ..................................................... 3-3
3-3.
Servo/System Control 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-402 Printed Wiring Board .................................. 4-5
•
MA-402 (Video, Audio) Schematic Diagram ............ 4-9
•
MA-402 (System Control) Schematic Diagram ....... 4-13
•
MA-402 (Servo Control) Schematic Diagram .......... 4-17
•
MA-402 (Hi-Fi Audio) Schematic Diagram .............. 4-19
•
MA-402 (Tuner) Schematic Diagram ....................... 4-21
•
MA-402 (I/O) Schematic Diagram ............................ 4-23
•
MA-402 (Mode Control) Schematic Diagram .......... 4-25
•
MA-402 (Power Supply) Schematic Diagram .......... 4-27
•
GK-12 Printed Wiring Board and
Schematic Diagram .................................................. 4-29
•
NK-11 Printed Wiring Board and
Schematic Diagram .................................................. 4-31
•
FJ-31 Printed Wiring Boards and
Schematic Diagrams ................................................ 4-33
•
DM-98 Printed Wiring Boards and
Schematic Diagrams ................................................ 4-33
•
DI-81 Printed Wiring Board and
Schematic Diagrams ................................................ 4-35E
5.
INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1.
System Control-Video Block Interface
(MA-402 BOARD IC101) ............................................... 5-1
5-2.
System Control-Servo Peripheral Circuit Interface
(MA-402 BOARD IC101) ............................................... 5-1
5-3.
System Control-Mechanism Block Interface
(MA-402 BOARD IC101) ............................................... 5-2
5-4.
System Control-Audio Block Interface
(MA-402 BOARD IC101) ............................................... 5-3
5-5.
Servo/System Control,
OSD Microprocessor Pin Function
(MA-402 BOARD IC101) ............................................... 5-4
5-6.
NICAM Processor Pin Function
(NK-11 BOARD IC1) ..................................................... 5-5E
5-7.
ZWEITON Processor Pin Function
(GK-12 BOARD IC001) ................................................. 5-5E
6.
ERROR CODES
.................................................... 6-1E
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. Alingment 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 Adjustment ............................................. 7-2
2-2-1. Power Supply Check ................................................ 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 ............... 7-6E
8.
REPAIR PARTS LIST
8-1.
Exploded Views ............................................................. 8-1
8-1-1. Front Panel and Upper Case Section ...................... 8-1
8-1-2. Chassis Section ....................................................... 8-3
8-1-3. Mechanism Deck Section-1 ..................................... 8-5
8-1-4. Mechanism Deck Section-2 ..................................... 8-6
8-1-5. Mechanism Deck Section-3 ..................................... 8-7
8-2.
Electrical Parts List ....................................................... 8-8
