HCD-FX350I - Sony Audio Service Manual (repair manual). Page 2

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HCD-FX350i
2
1. 
SERVICING  NOTES
  .............................................   3
2. DISASSEMBLY
2-1. Disassembly 
Flow 
...........................................................   5
2-2.  Panel (Rear) Block ..........................................................   5
2-3.  Top Panel Block ..............................................................   6
2-4.  Front Panel Block ...........................................................   6
2-5. Knob 
(VOL) 
....................................................................   7
2-6.  Module (DAB Tuner) Block, MAIN Board ....................   7
2-7. Base 
Unit 
.........................................................................   8
2-8.  Optical Pick-up Block (DA11MMVGP) ........................   8
3. 
TEST  MODE 
 ............................................................   9
4. 
ELECTRICAL  CHECK 
 .........................................   10
5 DIAGRAMS
5-1.  Block Diagram - CD, TUNER Section - ........................   12
5-2. Block 
Diagram 
- OUTPUT, PANEL, POWER SUPPLY Section - .........   13
5-3.  Printed Wiring Board - BD73 Board - ............................   16
5-4.  Schematic Diagram - BD73 Board - ...............................   17
5-5.  Schematic Diagram - MAIN Section (1/2) - ...................   18
5-6.  Schematic Diagram - MAIN Section (2/2) - ...................   19
5-7.  Printed Wiring Boards - MAIN Section - .......................   20
5-8.  Printed Wiring Board - IP Board - ..................................   21
5-9.  Schematic Diagram - IP Board - .....................................   21
5-10.  Schematic Diagram - PANEL Board (1/2) - ...................   22
5-11.  Schematic Diagram - PANEL Board (2/2) - ...................   23
5-12.  Printed Wiring Board - PANEL Board - .........................   24
5-13.  Printed Wiring Board - PT Board - .................................   25
5-14.  Schematic Diagram - PT Board - ....................................   25
6. 
EXPLODED  VIEWS
6-1. Overall 
Section 
...............................................................  28
6-2.  Top Panel Section ...........................................................   29
6-3.  Front Panel Section .........................................................   30
6-4. Chassis 
Section 
...............................................................  31
7. 
ELECTRICAL  PARTS  LIST
  ..............................   32
TABLE  OF  CONTENTS
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.
FLEXIBLE  CIRCUIT  BOARD  REPAIRING
•  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.
SAFETY-RELATED  COMPONENT  WARNING!
COMPONENTS  IDENTIFIED  BY  MARK  
0  OR  DOTTED  LINE  
WITH  MARK  
0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS 
 
WHOSE  PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  
MANUAL  OR  IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
This appliance is classifi ed as 
a CLASS 1 LASER product.
This marking is located on the 
rear exterior.
CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous radia-
tion exposure.
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