Sony str lv 500 service manual

Page 2

STR-LV5OO

AM tuner section
Tuning range

Antenna

Intermediate frequency
Usable sensitivity

531 - 1,602 kHz
Loop antenna

450 kHz

50 dB/m (at 999 kHz)

S/N 54 dB (at 50 mV/m)
Harmonic distortion 0.5% (50 mV/m, 400 Hz)
Selectivity
At 9 kHz: 35 dB
General
Power requirements 230 V AC, 50/60 Hz
Power consumption 95 W
Power consumption (during standby mode)
0.7 W
Dimensions 430 x 65 x 288 mm
including projecting parts and controls
Mass (Approx) 2.7 kg

Supplied accessories
FM wire antenna (1)

AM loop antenna (1)
Remote commander (1)
R6 (size-AA) batteries (2)
Speaker plug (5)

Wrench (1)

Design and specifications are subject to change without notice.

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 1C pins, etc.

Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solderi

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,

2

TABLE OF CONTENTS
Specifications 1
1. GENERAL ...................................................................... 3
2. SERVICING NOTES ................................................... 4
3. TEST MODE 7

4. DIAG RAMS

4-1. IC Pin Function Descriptions
4-2. Block Diagrams - Tuner/DSP Section

Block Diagrams A Display/Power Section ~ ......... 15
4-3. Printed Wiring Boards

- Digital Section (Side A)~ ................................... 16

Printed Wiring Boards

~ Digital Section (Side B)#
4-4. Schematic Diagram ~ Digital Section (1/3)
4-5. Schematic Diagram - Digital Section (2/3)
4-6. Schematic Diagram - Digital Section (3/3)
4-7. Schematic Diagram ~ Power Section~ .....
4-8. Printed Wiring Boards

- Power Section (Side A)~ 22

Printed Wiring Boards

e Power Section (Side B)- .................................... 23
4-9. Printed Wiring Boards

~ Amp Section (Side A)~ ....................................... 24

Printed Wiring Boards

~ Amp Section (Side B)~ ......................
3-10, Schematic Diagram ~ Amp Section (1/2)
3-11. Schematic Diagram e Amp Section (2/2)
3-12. Printed Wiring Boards 4 Display Section
3-13. Schematic Diagram ~ Display Section~ ..
3-14.1C Block Diagrams

5. EXPLODED VIEWS

5-1. Front Panel Section ................................................. 31
5-2. Cabinet Section 32
6. ELECTRICAL PARTS LIST .................................... 33

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINE
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE
THESE COMPONENTSWITH SONY PARTSWHOSE PART NUM-
BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY.