Sony str n 500 k service manual

Page 1

STR-N500K

SERVICE MANUAL EModel

Chinese Model

STR-NSDOK ls tuner and amplifier
section In LBT-NSOOK.

SPECIFICATIONS

Tuner a. Preamplifier input Jack type
System FM stereo AUX Phone

FM / AM superheterodyne tuner PHONO (MM) phone
FM tuner section L Phone
Tuning range 87.5 - 108.0 MHz
Antenna 75 ohms unbalanced _____. -
Intermediate frequency input Sensitivity Impedance

10-7 MHZ AUX 245 mV 47 kilohms

AM tuner section PHONO (MM) 33 mV 47 kilohms
Tuning range MIC 1, 2 1 mV 10 kiiohms

AM: 531 - 1,602 kHz -_ -" fl
Antenna AM loop antenna Mass . Approx. 2'6 kg

Dimenswns

External antenna terminals
Intermediate frequency
450 kHz

Approx. 355 x 105 x 315 mm
(w / h/ d, including projections)

Design and specifications are subject to
change without notice.

FM-AM TUNER/PRE-AMPLIFIER
S O N E

Page 2

TABLE OF CONTENTS

Section Title Page
Specifications .................................. 1

1. GENERAL
1-1. Index to Pans and Controls ----------------- 3

2. ELECTRICAL ADJUSTMENTS ---------- 4

3. DIAGRAMS

3-1 Schematic Diagram - Tuner Section - ------ 5
3-2. Schematic Diagram - Main Section - ------- 8
3-3. Printed Win'ng Boards

- Tuner, Main Section - --------------
3-4 Printed Wiring Board - Panel Section - -
3-5. Schematic Diagram - Panel Section -

3-6. IC Pin Function Description ---------------- 19
4. EXPLODED VIEW ...................... 21
5. ELECTRICAL PARTS LIST ------------ 22

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A OR DOTI'ED
LINE Wl11-I MARK A ON THE SCHEMA'RC 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.