TA-FE370, TA-FE570 - Sony Audio Service Manual (repair manual). Page 2

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2
TA-FE370/FE570
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  PUB-
LISHED  BY  SONY.
TABLE  OF  CONTENTS
1.
SERVICING  NOTES
...............................................
2
2.
GENERAL
Location of Controls .......................................................
3
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
4
3-2. Case .................................................................................
4
3-3. Front Panel Assy .............................................................
5
3-4. MAIN Board ...................................................................
5
4.
DIAGRAMS
4-1. Note for Printed Wiring Boards
and Schematic Diagrams ................................................
7
4-2. Printed Wiring Board  – MAIN Board – ........................
8
4-3. Schematic Diagram – MAIN Board – ............................
9
4-4. Printed Wiring Boards  – CONTROL/SPEAKER SW/
VOLUME/Boards – ........................................................ 10
4-5. Schematic Diagram  – CONTROL/SPEAKER SW/
VOLUME Boards – ........................................................ 11
4-6. Printed Wiring Boards
– AC OUTLET/HEADPHONE/LOUDNESS/
POWER SW/STANDBY Boards – ................................. 12
4-7. Schematic Diagram
– AC OUTLET/HEADPHONE/LOUDNESS/
POWER SW/STANDBY Boards – ................................. 13
4-8. IC Pin Function Description ........................................... 14
5.
EXPLODED  VIEWS
5-1. Case Section .................................................................... 15
5-2. Front Panel Section ......................................................... 16
5-3. Chassis Section ............................................................... 17
6.
ELECTRICAL  PARTS  LIST
............................... 18
SECTION  1
SERVICING  NOTES
IN
RECOUT
IN
PHONO
IN
TUNER
IN
IN
RECOUT
IN
CD
AUX
TAPE2/MD
TAPE1/DAT
EON CONTROL
AC  OUTLET
SPEAKERS
L
R
IMPEDANCE USE 4 - 16 
SWITCHED 100W MAX
+
+
R
L
SIGNAL GND
U
IN
PART No.
Model
PART No.
TA-FE570: AEP model
4-233-359-0
[]
TA-FE570: UK model
4-233-359-1
[]
TA-FE370: AEP model
4-233-359-2
[]
TA-FE370: UK model
4-233-359-3
[]
MAIN BOARD SETTING
On AEP model of this set, AC outlet is mounted onto the AC OUT-
LET board holding the back panel between. Since removing the
MAIN board alone is difficult, in repairing the MAIN board, handle
the MAIN board with the back panel connected as shown in the
figure below.
back panel
MAIN board
MODEL  IDENTIFICATION
– Back Panel –
Ver 1.1  2001.07
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 ˚C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 ˚C .
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur
such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
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