Sansui T-80 Service Manual

--T-80/60
SPECIFICATIONS
SOHAACMUANNIOU |.
FM Section
Tuning range ...... 88 to 108 MHz
Usable Sensitivity
“FM/AM
STEREO
TUNER
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StereotHF ..... 21.0 dBf
: a 50 dB Quieting Sensitivity
; = Mono ........ 15.0 dBf
Stereo 37.0 dBf
ware
Signal to noise ratio at 65 dBf
MONO) 2 bie aoe ce x 72 dB
Stereo .. 1.2... 68 dB
Distortion at 65 dBf
Mono ........ less than 0.2 % at 1,000 Hz
Stereo ........ less than 0.25 % at 1,000 Hz
Alternate channel selectivity (at 400 kHz)
ad ~ Te MB hs hated Sota, 60 dB
Stereo separation... . 40 dB at 1,000 Hz
Frequency response .. 30 to 15,000 Hz
+1.0 dB, —2.0 dB
Antenna input impedance
Beapihak “wad sh gecaert it 300 ohms balanced
75 ohms unbalanced
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: AM Section
Tuning range
fJoable -anait
Sa SOT
530 to 1,600 kHz
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Mes hatele up coe OU ETE Qo ae tty
Signa! to noise ratio 45 dB
image response ratio. 45 at 1,000 Hz
Others
Output voltage and impedance
ihe Bhit Me aha GE 775 mV/2.2 kitohms
Power requirements .. 110 ~ 120, 220 ~ 240 V
50/60 Hz
For U.S.A. and Canada
BD cates tight Ge OL te ue 120 V (60 Hz)
Power consumption .. 13 W (T-60)
19 W (T-80)
Weight .......... 4.1 kg (9.0 Ibs) net
5.1 kg (11.2 tbs) packed (T-60)
4.8 kg (10.6 Ibs) net
5.8 kg (12.8 lbs) packed (T-80)
Dimensions ....... 430 mm (16-15/16") W
147 mm (5-13/16") H
251 mm (9-15/16") D
* Design and specifications subject to change withou
notice for improvements.
* In order to simplify the explanation illustrations ma\
sometimes differ from the originals.
SANSUI ELECTRIC CO., LTD.

Sansui T-80 Specifications

General

Tuning Scale	Analog
Frequency Range FM	87.5 - 108 MHz
Frequency Range MW	530 - 1605 kHz
Signal to Noise Ratio FM	70 dB
Total Harmonic Distortion FM	0.3%
Tuning Bands	FM, AM
Sensitivity MW	30 µV
Sensitivity AM	30 µV
Selectivity	60 dB (FM)
Signal to Noise Ratio AM/MW	50 dB
Frequency Response	30 Hz - 15 kHz
Dimensions	430 x 240mm

Summary

Specifications

FM Section Specifications

AM Section Specifications

Block Diagrams

T-80 Model Block Diagram

Overall block diagram for the T-80 model, illustrating signal flow and component interaction.

T-60 Model Block Diagram

Overall block diagram for the T-60 model, illustrating signal flow and component interaction.

Adjustment Procedures

FM Adjustment

Steps for FM IF, RF adjustment, discriminator coil adjustment, AFC voltage, and dial calibration.

FM Stereo Adjustment

Procedures for adjusting PLL VCO, stereo separation, and muting level for FM stereo reception.

AM Adjustment and Dial Calibration

Steps for adjusting AM IF coils and dial calibration for 600 kHz and 1400 kHz frequencies.

Component Identification

Dial Cord Maintenance

Threading the Dial Cord

Attaching the Dial Pointer

Schematic Diagrams

Tuner Section T-80 Schematic

Detailed schematic diagram for the tuner section of the T-80 model, showing component connections.

Tuner Section T-60 Schematic

Digital Display Section T-80 Schematic