Sony EXRC-205 Service manual

EXR-C205/XR-C340

SERVICE MANUAL

US Model

Canadian Model

EXR-C205

E Model

XR-C340

Refer to RM-X2S/X3S SERVICE MANUAL (9-960-039-∏) issued previously for information of remote commander (RM-X2S) supplied with XR-C340.

Specifications Cassette Player section

Tape track 4-track 2-channel stereo Wow and flutter 0.08% (WRMS) Frequency response 30-18,000 Hz Signal-to-noise ratio 58 dB

Tuner section

Tuning range EXR-C205:

87.5-107.9 MHz XR-C340: FM tuning interval: 50 kHz/200 kHz switchable

87.5-108.0 MHz (at 50 kHz step)

87.5-107.9 MHz

(at 200 kHz step) Antenna terminal External antenna connector Intermediate frequency 10.7 MHz Usable sensitivity 8 dBf Selectivity 75 dB at 400 kHz Signal-to-noise ratio 65 dB (stereo),

68 dB (mono) Harmonic distortion at1 kHz

0.5% (stereo),

0.3% (mono) Separation 35 dB at 1 kHz Frequency response 30-15,000 Hz Capture ratio 2 dB

Photo : XR-C340

Model Name Using Similar Mechanism NEW T ape Transport Mechanism T ype

Power amplifier section

Outputs Speaker outputs

(sure seal connectors)

Speaker impedance 4-8 ohms Maximum power output 35 W × 4 (at 4 ohms)

General

Outputs Power antenna control

lead/Power amplifier control lead/Telephone mute control lead (XR-C340 only) Rear line out (1)

Tone controls Bass ±8 dB at 100 Hz

Treble ±8 dB at 10 kHz

Power requirements 12V DC car battery

(negative ground)

Dimensions Approx. 188 × 58 × 184 mm

(w/h/d)

Mounting dimensions Approx. 182 × 53 × 164 mm

(w/h/d) Mass Approx. 1.3 kg Supplied accessories Parts for installation and

connections (1set)

Front panel case (1)

Rotary remote RM-X2S

(XR-C340 only)

Design and specifications are subject to change without notice.

MG-25A-136

Tuning range EXR-C205

530-1,710 kHz XR-C340 AM tuning interval: 9 kHz/10 kHz switchable 531-1,602 kHz (at 9 kHz step) 530-1,710 kHz

(at 10 kHz step) Antenna terminal External antenna connector Intermediate frequency 10.71 MHz/450 kHz Sensitivity 30 µV

MICROFILM

FM/AM CASSETTE CAR STEREO

TABLE OF CONTENTS

SERVICING NOTES

1. GENERAL ................................................................... 3

Location of Controls ........................................................ 3

Resetting the Unit ............................................................ 3

Detaching the Front Panel ............................................... 3

Preparing the Rotary Remote .......................................... 3

Setting the Clock ............................................................. 4

Using the Rotary Remote ................................................ 4

Adjusting the Sound Characteristics ............................... 5

Muting the Sound ............................................................ 5

Changing the Sound and Beep Tone................................ 5

Installation ....................................................................... 6

Connections ..................................................................... 7

2. DISASSEMBLY.......................................................... 10

3. ASSEMBLY OF MECHANISM DECK ........... 12

4. MECHANICAL ADJUSTMENTS ....................... 15

5. ELECTRICAL ADJUSTMENTS ...................... 15

6. DIAGRAMS

6-1. IC Pin Function Description ............................................ 16

6-2. Printed Wiring Board –MAIN Section– ......................... 20

6-3. Schematic Diagram –MAIN Section–............................ 23

6-4. Printed Wiring Board –KEY Section– ........................... 27

6-5. Schematic Diagram –KEY Section– .............................. 29

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur-

ing 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

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.

7. EXPLODED VIEWS .......................................... 31

8. ELECTRICAL PARTS LIST ................................ 34

– 2 –

SECTION 1

GENERAL

This section is extracted from instruction manual.

– 3 –

– 4 –

– 5 –

– 6 –

– 7 –

– 8 –

– 9 –

SECTION 2

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

FRONT PANEL ASS’Y

Push the button (release).

Remove the front panel ass’y to the direction of the arrow A.

COVER ASS’Y

cover ass’y

– 10 –

SUB PANEL, MECHANISM DECK (MG-25A-136)

connector (CN302)

sub panel

three screws (PTT2.6 × 8)

screw (PTT2.6 × 6)

mechanism deck (MG-25A-136)

flexible flat cable (CN301)

three screws (PTT2.6 × 8)

MAIN BOARD, HEAT SINK

two ground point screws

main board

heat sink

eight screws (PTT2.6 × 10)

screw (PTT2.6 × 8)

– 11 –

two screws (PTT2.6 × 8)

SECTION 3

ASSEMBLY OF MECHANISM DECK

Note: Follow the assembly procedure in the numerical order given.

HOUSING

Fit claw on B part.

Install the hanger onto two claws of the housing.

Put the housing under A part.

housing

part

Fit projection on C part.

part

Hold the hanger by bending the claw.

Install the catch to the hanger.

hanger

Fit projection on D part.

Hold the hanger by bending the claw.

part

ARM (SUCTION)

projection

part

Move the arm (suction) in the arrow direction and fit on projection.

Fit the arm (suction) on the shaft.

– 12 –

LEVER (LDG-A) / (LDG-B)

shaft

Fit the lever (LDG-A) on shafts A – C and install it.

shaft

type-E stop ring 2.0

Pull the lever in the arrow direction.

shaft

Fit the lever (LDG-B) on shafts A and B and install it.

GEAR (LDG-FT)

hole

gear (LDG-D)

lever (LDG-A)

gear (LDG-FB)

gear (LDG-FT)

polyethylene washer

Move the lever (LDG-B) in the arrow direction.

tension spring (lever LDG)

Align hole in the gear (LDG-D) with hole in the lever (LDG-A).

– 13 –

GUIDE (C)

three claws

guide (C)

– 14 –

+ 31 hidden pages