Read Sony HS-JM400 Service Manual online
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TABLE OF CONTENTS
HS-JM400
1. SERVICE NOTE
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2. GENERAL
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3. DISASSEMBLY
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3-1. Front Cabinet ASSY ······································································· 5
3-2. MAIN Board ··················································································· 6
3-3. Mechanism Deck (MT-WMGX221-175) ······································· 6
3-4. Belt (Cap), M601, HRP901, HE901 ··············································· 7
3-5. Cassette Holder Sub ASSY ····························································· 7
3-2. MAIN Board ··················································································· 6
3-3. Mechanism Deck (MT-WMGX221-175) ······································· 6
3-4. Belt (Cap), M601, HRP901, HE901 ··············································· 7
3-5. Cassette Holder Sub ASSY ····························································· 7
4. MECHANICAL ADJUSTMENT
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5. ELECTRICAL ADJUSTMENT
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6. DIAGRAMS
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6-1. Block Diagram – Tuner Section – ················································· 11
6-2. Block Diagram – Main Section – ················································· 12
6-3. Printed Wiring Boards (Side A) ···················································· 13
6-4. Printed Wiring Boards (Side B) ···················································· 14
6-5. Schematic Diagram – MAIN Board (1/2) – ·································· 15
6-6. Schematic Diagram – MAIN Board (2/2) – ·································· 16
6-7. IC Block Diagrams ······································································· 17
6-2. Block Diagram – Main Section – ················································· 12
6-3. Printed Wiring Boards (Side A) ···················································· 13
6-4. Printed Wiring Boards (Side B) ···················································· 14
6-5. Schematic Diagram – MAIN Board (1/2) – ·································· 15
6-6. Schematic Diagram – MAIN Board (2/2) – ·································· 16
6-7. IC Block Diagrams ······································································· 17
7. EXPLODED VIEWS
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7-1. Overall Section ············································································· 19
7-2. Cabinet (Front) Section ································································· 20
7-3. Mechanism Deck Block-1 (MT-WMGX221-175) ······················· 21
7-4. Mechanism Deck Block-2 (MT-WMGX221-175) ······················· 22
7-2. Cabinet (Front) Section ································································· 20
7-3. Mechanism Deck Block-1 (MT-WMGX221-175) ······················· 21
7-4. Mechanism Deck Block-2 (MT-WMGX221-175) ······················· 22
8. ELECTRICAL PARTS LIST
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Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
• Keep the temperature of 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.
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