Table Of Contents; Location Of Parts And Controls - Sony WM-GX400 Service Manual

WM-GX400
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Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270°C during
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.
TE
L 13942296513

Location of parts and controls

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SPEAKER
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SECTION 1
GENERAL
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REW/REVIEW
FF/CUE
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FM
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TABLE OF CONTENTS

8
Specifications ........................................................................... 1
1. GENERAL
Location of Parts and Controls .......................................... 2
2. DISASSEMBLY
2-1. Cabinet (Front)Cabinet (Rear),
"Lid, Cassette ASSY" ............................................... 3
2-2. Main Board ................................................................. 4
2-3. Mechanism Deck ........................................................ 4
2-4. HRPE301 (REC/PB/ERASE head),
M601 (Capstan/reel motor), Belt (AR) ....................... 5
2-5. Display Board ............................................................. 5
3. ADJUSTMENTS
3-1. Mechanical Adjustments ............................................. 6
3-2. Electrical Adjustments ................................................ 6
4. DIAGRAMS
4-1. Explanation of IC Terminals ....................................... 7
4-2. Block Diagrams -Tape Section- ................................ 8
4-3. Block Diagrams -Tuner Section- ............................... 9
4-4. Printed Wiring Board -Main Section (Side A)- ....... 10
4-5. Printed Wiring Board -Main Section (Side B)- ....... 11
4-6. Schematic Diagram -Main Section (1/2)- ............... 12
4-7. Schematic Diagram -Main Section (2/2)- ............... 13
4-8. Printed Wiring Board -Display Section (Side A)- ... 14
4-9. Printed Wiring Board -Display Section (Side B)- ... 15
4-10. Schematic Diagram -Display Section- .................. 16
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5. EXPLODED VIEWS
3 6 7 1 3
5-1. Cabinet (Rear) Section .............................................. 20
5-2. Cassette Lid Section ................................................. 21
5-3. Mechanism Section-1 (MT-WMGX400-175) .......... 22
5-4. Mechanism Section-2 (MT-WMGX400-175) .......... 23
6. ELECTRICAL PARTS LIST ................................ 24
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This section is extracted from
instruction manual.
TUNING MODE
m
VOL
co
MIC (PLUG IN POWER)
FM MODE ST/MONO
z
(or/ou/oder)
FM MODE DX/LOCAL
z
TUNING
9 9
2 8 9 9