Sony xr u 551 rds service manual

Page 2

XR-U550/U550RDS/U551RDS/U660/U660RDS/U661RDS

Antenna terminal

External antenna connector

Intermediate frequency 450 kHz

Sensitivity

XR-usso/UssuRoS/useo/useonos
30w

XR-U551RDS/U861RDS
MW: 30 uV
Lw: 50 iv

Power amplifier section

Outputs

Speaker Impedance

Speaker outputs
(sure seal connectors)
3.2 - 8 ohms

Maximum power output

20 WX4 (at 4 ohms)I
' Measured at 14.4 V

General

Output lead

Tone controls
Loudness
Power requirements

Dimensions

Power antenna relay control

lead

Power amplilier control lead

Bass :10 dB at 100 Hz

Treble 110 dB at 10 kHz

+10 dB at 100 Hz

+6 dB at 10 kHz

t2 V DC car battery

(negative ground)

Approx, 186 x 57 x174 mm
(wlhld).

not incl. projecting parts and

controls

Mounting dimensions

Weight
Accessories supplied

Approx 182 x 53 x154 mm
(will/d).

not inclt projecting pans and

contnrcls

Approx. 13 kg

Mounting hardware (1 set)

Power connecting cord (1)

Front panel case (1)

Optional accessory

Remote commander

nM-xao (except the model for
XR-USSOHDS/U551RDS)

Design and specifications subject to change without

notice.

TABLE OF CONTENTS

Section M fig;

Specifications .................................. 1

1 . GENERAL
Installation ............................................. 3
Connections ............................. 5
Precautions .............................. 7
Location and Function of Controls ---------------- 7
Detaching and Attaching the Front Panel ----- 8
Setting the Clock ......................... 8
Listening to the Tape Playback -------------- 9
Locating a Desired Track ----------------- 9
Playing in Other Modes -------------------- 10
Searching for the Stations Automatically ----- 10
Tuning in by Adjusting the Frequency ----------- ll
Memorizing the Stations Automatically ------ ll
Memorizing Only the Desired Stations ------- ll
Receiving Stations Stored in the Memory ~~~~~ 12
Overview of the RDS Function ------------- 12
StationName Display - -
Automatic Re-tuning l3
Receiving Traffic Information 13
Listening to the CD Play ------ 14

Locating a Desired Disc, Track or
Part ofaTrack - -
Playing in Other Modes ---------

Displaying the Title of Each Disc 16
Playing Selected Tiacks on 3 Disc ~ - l7
Editing a Custom File -------- 17
Maintenance ~~~~~~~~~ - 18
Troubleshooting Guide ------------------ l8

Section M Page
2. DISASSEMBLY
2.1. Cover ................................................... 19
2-2. Front Panel Assy ---------------- - 19
2-3. Mechanism Deck Block - - - 20
2.4. Power Board ........................................... 20
3. ADJUSTMENTS
3-1. Mechanical Adjustment --------------- 21
3,; Test Mode ...................... 21
33. Electrical Adjustments -------------------- 23
4. DIAGRAMS
4_1. Pin Descriptions ....................... 27
4.2. Block Diagram ........................ 34
4-3. Printed Wiring Boards and Schematic

Diagram (AMP Section) ------- : ----------- 37
4-4. Printed Wiring Boards (Main Section) - - - 42
4-5. Schematic Diagram (Main Section) ------ - 47
4-6. Printed Wiring Boards and Schematic

Diagram (Key Section) ------------------- 51
4-7. Printed Wiring Boards and Schematic

Diagram (EQ, Reel, PL Section) ------------------ 55
5. EXPLODED VIEWS -------------------- 57
6. ELECTRICAL PARTS LIST ~~~~~~~~~~~~ 62