Technics SU 7300 Service Manual

Page 1

ORDER NO. 807704-1216

Service Manual

Stereo Integrated Amplifier

SU-7300

(M), (MC)

Simulated wood cabinet

0 The model SU-7300 (M) is available in America only.
I The model SU-7300 (MC) is available in Canada only.

TECHNICAL SPECIFICATIONS

AMPLIFIER SECTION
Rated minimum sine wave RMS power output

(Specifications are subject to change without notice for further improvement.)

Frequency response

PHONO HIAA standard Curve 10.3 dB

20 Hz ~ 20 kHz
both channels driven
0.08% total harmonic distortion
48W per channel (4 ohms)
41W per channel (8 ohms)
1 kHz continuous power output
both channels driven
0.08% total harmonic distortion55W per channel (4 ohms)
43W per channel (8 Ohms)
Total harmonic distortion
0.08% at rated power (20 Hz ~20 KHZ)
004% at half power (20 Hz ~20 kHz)
0.02% at half power (1 kHz)
0.08%
20 (4 ohms),40 (8 ohms)

lntermodulation distortion
Damping factor
Input sensitivity and impedance

FHONO 2.5mV/47 kilohms

TUNER IBOmV/47 kilohms

TAPE 1, 2 (PLAVBACK) IBOmV/47 kilohms
PHONO maximum input voltage (1 kHz, RMS) 150mV
S/N (IHF, A)

PHONO 78 dB

TUNER 97 dB

Residual hum and noise 0.6mV

TUNER 7Hz~80kHZ,A3dB
20 Hz ~20 kHz, 10.5 dB

Tone controls

BASS 50 Hz,+12 dB~712 dB

TREBLE 20kHZl+12dB~712dB
High filter 8 kHz, 76 dB/oct.
Loudness control (volume at -30 dB) 100 Hz, +8 dB
Output voltage

TAPE 1, 2 (REC OUT) 150mV
Load impedance

MAIN or REMOTE 4~160hms

GENERAL
Power consumption 140W (only for America)
ZBOVA (only for Canada)
AC 120V 60 Hz
17%" X57." X13%"
(441 X146 X 334) mm
20.1 lb. (941 Kg)

Power supply
Dimensions (W x H x D)

Weight

Weights and dimensions shown are approximate

'Ibchnics

Panasonic Company

Division of Matsushita Electric
Corporation of America

One Panasonic Way, Secaucus,

byPanasonic
New Jersey 07094

Matsushita Electric of Hawaii, Inc. Matsushita Electric of Canada Ltd,
320 Waiakamilo Road, Honolulu,
Hawaii 96817

40 Ronson Drive, Rexdale,
Ontario, Canada M9W 185

Page 2

I LOCATION OF CONTROLS

TREBLE VOLUME

LEFT RIGHT

BASS

a

z:::::§£<32: A I

ll

HEADPONES JACK
POWERJ-i l

SPEAKERS SELECTORP"
.-

ii

ll '

_l J L
METER RANGE SELECTOR REC MODE TUNEEI INPUT SELECTOR
HIGH FILTER TAPE MONITOR PHONO

Front Panel View

TAPE DECK 2

MAIN SPEAKER TERMINALS
AC OUTLET
(switched)

AC OUTLET
(unswflched)

REMOTE SPEAKER TERMI

Rear Panel View

NOTE:

The unit is provided with the speaker
circuit protection fuses at the right and
left channels respectively.

The fuse is to prevent the power tranr . _ LEFT CHANNEL
sister from destruction, should the i . ¢ POWER AMPLIFIER

. _ - - , . M ~ RIGHT CHANNEL
speaker-terminals be shOEtcIrCUIfted. _ Ehggmogéglc . { . __ POWER AMPLIFIER
Accordingly, If the unit an s to unctlon 8200mfd(><2) ,.

upon completion of the speaker conA ' . fl . ' ; EQUALIZER LC.
nections, check the speaker protection
fuses first of all for possible blowing.

CIRCUIT PROTECTION FUSES-

I TO REMOVE CABINET

1. Remove four (4) cabinetrmounting screws, nos.
CD ~ @,asshown in fig. 1.

2. Remove cabinet from chassis.

3. To reassenble, reverse above procedure.

Fig. 1

su-73oo