Sony xr 7180 service manual

Page 1

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US Model
Canadian Model

X37780

A EP Model

X 3-7080/7082

E Model

X R7080

Photo: XR-7180

SPECIFICATIONS

. = owner-m

POWER OUTPUT AND TOTAL HARMONlC DISTORTION
14 watts per channel minimum continuous average power into
4 ohms, both channels driven, from 40-20000 Hz with no more
than 1% total harmonic distortion.

Power amplllier section
Outputs Speaker outputs

(sure seal connectors)
Speaker impedance 4-8 ohms
Maximum power output
27 W x2 (at 4 ohms)
9 W x 4 (at 4 ohms)
Measured at 144 V

Cassette player section
Tape track 4-traok 2-channel stereo
Frequency response 3048.000 Hz

Signal-to-noise ratio

Cassette Dolby C
type mm B tXR-7180) my °
TYPE 11, IV 66 dB 76 dB 58 dB
TYPE I 63 dB 73 dB 55 dB

Wow and llutter 0.1% (WRMS)

Tuner section
FM
Tuning range XR-7180: 879-1079 MHz
XR-7080/7082: 875A108.0 MHz
Antenna terminal External antenna connector
Usable sensitivity 12 dBl (75 ohms)
Selectivity 75 dB at 400 kHz
Signal-tavnoise ratio 65 dB (stereo), 70 dB (mono)
Harmonic distortion at 1 kHz

05% (stereo), 0.3% (mono)

Separation 35 dB at 1 kHz
Frequency response $045,000 Hz
Capture ratio 2 dB

Model Name Using Similar Mechanism XR-7200
MGv55D-31

Tape Transport Mechanism Type

AM
Tuning range XR-7180: 530-1,710 kHz
XRo7080/7082:
531-11502 kHz (at 9 kHz step)
530~1,620 kHz (at 10 kHz step)
Antenna terminal External antenna connector

Sensitivity 35 MV
General
Output lead Power antenna relay control lead

Line output connector
Remote control output lead
(for auxiliary input)
Amplifier remote conlrol lead
input lead Auxiliary Input connector
Remote control input lead
(for auxiliary Input)
Bass :10 dB at 100 Hz
Treble :10 dB at 10 kHz
Loudness + 10 dB at 100 Hz
+6 dB at 10 kHz
Power requirements 12 V DC car battery (negative
ground)
Dimensions (without bracket)
Approx. 178 x 50 x153 mm (wlh/d)
(71/23 x 2 x Bi/a inches)
not incl. projecting parts and controls

Tone controls

- Continued on next page -

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the doubleD symbol DI] are trademarks of
Dolby Laboratories Licensing Corporation.

FM/AM CASSETTE CAR STEREU

SONE

Page 2

XR-7080/7082/7180

Mountlng demensions

Weight

Approx. 182 x 53 x145 mm (w/h/dl
(7/.. x 2/S x 53/. inches)
not incl. projecting parts and controls

Approx. 1.9 kg (4 lb 3 oz)

Accessory supplied Mounting hardware (1 set)

TABLE OF CONTENTS

Section Title Page
Specifications ....................... 1
Note on Repairing .................... 2
1. GENERAL
Location and Function of Controls ..... 3
Installation ..................... 5
Connections .................... 6
Tape Playback ................... 8
Automatic Tuning ................ 8
Manual Tuning ................... 9
Memory Preset Tuning .............. 9
Maintenance .................... 9
2. DISASSEMBLY .................. 10

[NOTE ON REPAIRING]
0 Note on Repairing AMP Board

When repairing AMP Board removed from the
chassis as shown in Fig. 1, check or repair it con-
nected with lead wires and such like.

When Checking AMP Board separately, connect
with a lead wire between ground patterns as shown
in Fig. 2.

a After repairing, remove the lead wire.

Section Title Page
3. ADJUSTMENTS
3-1. Mechanical Adjustment ............. 12
3-2. Electrical Adjustments .............. 12
4. DIAGRAMS
4-11 IC301 (uPD75108G-E61) Description . . . 17
IC Block Diagrams ................ 22
4-2. Tuner Section Schematic Diagram ...... 23
4-3. Printed Wiring Boards .............. 26
4-41 Main Section Schematic Diagram ....... 31
5. EXPLODED VIEWS ............... 37
6. ELECTRICAL PARTS LIST ......... 42

AMP board

Ground lead wire

Fig. 7

lead wire (between ground patterns)

Fig. 2

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