Table Of Contents - Sony XR-L240 Service Manual

XR-L240
Ver 1.2

TABLE OF CONTENTS

1. GENERAL
Location of Controls ....................................................... 3
Setting the Clock ............................................................. 3
Installation ....................................................................... 4
Connections ..................................................................... 5
2. DISASSEMBLY
2-1. Disassembly Flow ........................................................... 8
2-2. Sub Panel ......................................................................... 8
2-3. Mechanism Deck (MG-36SZ12-32) ............................... 9
2-4. MAIN Board ................................................................... 9
2-5. Heat Sink ......................................................................... 10
2-6. Bracket (MD) .................................................................. 10
2-7. Motor (Capstan/Reel) (M901) ........................................ 11
2-8. Main Belt, Sub Belt (C) .................................................. 11
2-9. Head (Playback) (HP901) ............................................... 12
3. MECHANICAL ADJUSTMENTS
4. ELECTRICAL ADJUSTMENTS
Tape Deck Section .......................................................... 14
Tuner Section .................................................................. 15
5. DIAGRAMS
5-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 18
5-2. Printed Wiring Board - MAIN Board - ........................ 19
5-3. Schematic Diagram - MAIN Board (1/2) - .................. 20
5-4. Schematic Diagram - MAIN Board (2/2) - .................. 21
5-5. Printed Wiring Board - CONTROL Board - ................ 22
5-6. Schematic Diagram - CONTROL Board - ................... 23
5-7. IC Pin Function Description ........................................... 25
6. EXPLODED VIEWS
6-1. General Section ............................................................... 27
6-2. Front Panel Section ......................................................... 28
6-3. Mechanism Deck Section (MG-36SZ12-32) ................. 29
7. ELECTRICAL PARTS LIST
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
2
TYPE A/B DISCRIMINATION
In this set with following serial No. or later IC500 on MAIN board
has been changed in the midway of production. With the conse-
quence of this change, parts mounted on MAIN board have been
changed.
....................... 13
............................... 30
SERVICING NOTE
ILLUMINATION COLOR
AMBER
GREEN
TYPE SERIAL No.
A 2606838 or before
B 2606839 or later
A 2610738 or before
B 2610739 or later