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The product was good and just what I needed, however I had moderate difficulty with the down load because the sight would not recognize my pass word. I was finally given a direct link to the manual and that worked.
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Very quick and easy website to use and fast download of manual, quality of manual is excellent and will be pleased to use this service again in the future, thanks so much!
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It is an very good and clear scanned service manual.
very recommended.
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Easy to order the manual. Good quality and fast delivery.
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The Service Manual for Sansui AU-9500 was very helpfull, in complete and in good printable condition.
Thanks.
Touch current check
(After completing the work, measure touch current to prevent an electric shock.) �Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check..
�Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure D.1
�The potential at any point(TOUCH CURRENT) expressed as voltage U1 and U2 does not exceed the following value:
The part or contact of a TERMINAL is not HAZARDOUS LIVE if: a) the open-circuit voltage does not exceed 35 V (peak) a.c or 60 V d.c., or,if a)is not met, b) the measurement of the TOUCH-CURRENT shall be carried out in accordance with IEC 60990, with the measuring network described in annex D of this standard. The TOUCH CURRENT expressed as voltages U1 and U2, does not exceed the following values: - for a.c.:U1= 35 V(peak)and U2=0.35 V (perk); - for d.c.:U1= 1,0 V, NOTE 5 -The limit values of U2=0.35 V (peak) for a.c. and U1=1.0 V for d.c. correspond, to the values 0,7mA (peak) a.c. and 2,0 mA 2,0mA d.c. The limit value U1= 35 V (peak) for a.c. corresponds to the value 70mA (peak) a.c. for frequencies greater than 100 kHz.
Annex D (normative) Measuring network for TOUCH CURRENTS
A
Test TERMINALS
Rs= 1 500Ω
Cs= 0.22uF 10kΩ
B
Rb = 500Ω
U1
0.022uF
V
U 2 (V)
IEC 802/96
Resistance values in ohms(Ω) V: Voltmeter or oscilloscope (r.m.s or peak reading) Input resistance: �1 MΩ Input capacitance: � 200 pF Frequency range: 15 Hz to 1 MHz and d.c. respectively NOTE-Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms. The measuring instrument is calibrated by comparing the frequency factor of U2 with the solid line in figure F.2 of IEC 60990 at various frequencies. A calibration curve is constructed showing the deviation of U2 from the ideal curve as a function of frequency. TOUCH CURRENT=U2/500(peak value)
Fig.D.1
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