Table Of Contents; General - Sony DXA-H2750 Service Manual

| DXA-H2750
TABLE OF CONTENTS
Section Title Page Section ' Title Page
1. GENERAL 5. DIAGRAMS
j-l. Part Identification .............-.. 02. e eee ee ee eee ee 3 5-1. Semiconductor Lead Layouts ................660. 13
5-2. Ciaucuit Boards Location ....................006- 14
2. DISASSEMBLY 5-3. Printed Wiring Boards -Deck Section-.......... 16
2-1. Front Panel ............... cece cece e eee eee eaee 4 5-4. Schematic Diagram -Deck Section- ............ 19
2-2. Control Board, HP Board .....................05. 4 5-5. Schematic Diagram -Main Section- ............ 24
2-3. Cassette Lid Assy ............ cece eee e centre eee 5 5-6. Printed Wiring Boards -Main Section- ........ 29
2:4, MD Bl0ck® occ cen secvanivdeae ern eaienldse ai aciiens 5 5-7. Printed Wiring Boards --Panel Section- ........ 34
2:5.. "Back Panel: tee .cneia ce cexiwints alee evse Uieeet e 6 5-8. Schematic Diagram -Panel Section- ............ 37
2-6. Power Transformer .............. cece e scence eeees 6
2-7. TC Main Board ............0cc ccc ce cece ne ee ences 7 6. EXPLODED VIEWS
2-8. Joint (Upper) ........... 0. cee cece e eee eens 7 6-1. Cabinet Section ............. s c h e NE dep Wa ae Bh ch ane 42
2-9. Capstan/Reel Motor .............-.. sees eee eee eee 8 6-2. Chassis Section............0ccc cece ee eee n cea eeeee 43
2-10. Head Base ASSY........... sce e eee e ee eee eee eens 8 6-3. Cassette Holder Section................. cee eee 44
6-4. Mechanism Deck Section 1] .................00005 45
3. MECHAINICAL ADJUSTMENTS .................. 9 6-5. Mechanism Deck Section 2 ..............0:e sees 46
4. ELECTRICAL ADJUSTMENTS .................... 9 7. ELECTRICAL PARTS LIST ...................... 47
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SECTION 1
GENERAL
1-1. -_PARTS IDENTIFICATIONS This section is extracted from
instruction manual.
(1) HEADPHONES jack (stereo minijack)
[2] SYSTEM POWER switch and STANDBY
indicator
The indicator remains lit as long as the
AC power cord is connected to a wall
outlet.
[3] DISPLAY button @
[4] DIRECT button and indicator @
(5) FUNCTION button and function
indicators @ @
[6] PRESET button @
VOLUME control @
TOTAL EFFECT CONTROL
-/+ buttons @
[8] Cassette holder (Deck B)
EJECT & button (Deck 8B)
[13] Tape operation buttons (for Deck 8)
Q: Stop button
(>: Forward play button and indicator
<]: Reverse play button and indicator
<4 p>: Fast winding buttons
PAUSE [f: button and indicator
REC @: button and indicator
[12] DOLBY NR (Dolby Noise Reduction)
switch @
[3] CD SYNCHRO button @ @
TAPE DUBBING buttons @
NORMAL SPEED button
HIGH SPEED button
[is] DIRECTION mode selector @ @
Tape operation buttons (for Deck A)
©: Stop button
>: Forward play button and indicator
<j: Reverse play button and indicator
<4 p>: Fast winding buttons
EJECT & button (Deck A)
Cassette holder (Deck A)