Section
SERVICE NOTE ...................................................................... 4
1.
Play Timer ...................................................................... 1-1
Connections .................................................................. 1-2
2.
2-1.
2-2.
2-3.
2-4.
2-5.
2-6.
Internal Views ................................................................ 2-3
2-7.
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.
Power Block Diagram .................................................... 3-9
4.
PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
4-1.
4-2.
MA-370 Printed Wiring Board ....................................... 4-5
MA-370 (Head Amp) Schematic Diagram .................... 4-7
MA-370 (Video, Audio) Schematic Diagram ................. 4-9
MA-370 (Servo/System Control)
Schematic Diagram ....................................................... 4-13
MA-370/QP-1 (Kids Sound) Printed Wiring Board
and Schematic Diagram ................................................ 4-17
MA-370 (Mode Control) Schematic Diagram ............... 4-19
MA-370 (Power Supply) Schematic Diagram ............... 4-21
5.
INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1.
System Control-Video/RP Block Interface
(MA-370 BOARD IC160) ............................................... 5-1
5-2.
System Control-Servo Peripheral Circuit Interface
(MA-370 BOARD IC160) ............................................... 5-1
5-3.
System Control-Mechanism Block Interface
(MA-370 BOARD IC160) ............................................... 5-2
5-4.
System Control-System Control Peripheral
Circuit Interface (MA-370 BOARD IC160) .................... 5-3
5-5.
System Control-Audio Block Interface
(MA-370 BOARD IC160) ............................................... 5-3
5-6.
Servo/System Control Microprocessor Pin Function
(MA-370 BOARD IC160) ............................................... 5-4
TABLE OF CONTENTS
Title
Page
Section
6.
6-1.
6-2.
2-1.
2-1-2. Connection ............................................................... 6-1
2-2.
2-3.
2-4.
2-4-1. Normal Audio System Adjustment ........................... 6-3
1.
ACE Head Adjustment .................................................. 6-3
2.
E-E Output Level Check ............................................... 6-3
3.
Frequency Response Check ......................................... 6-3
2-5.
Parts Arrangement Diagram for Adjustments ............... 6-4
7.
7-1.
Exploded Views ............................................................. 7-1
7-2.
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Title
Page