Service manual

39
Ripple & Noise :
The power supply shall not exceed 250mVrms on the indicated voltage for 60Hz or 50Hz
ripple, switching frequency ripple and noise dynamic load variations measured with a
20MHz bandwidth. Ripple & noise are measured at the end of output cables to which are
added a 0.1uf ceramic capacitor and a 10uF electrolytic capacitor.
Leakage Current:
0.75mA
Over Voltage Protection :
27V max.(do not test with external DC source).
Shutdown voltage protection:
10V max.
ITEM TOLERANCE OUTPUT CURRENT
Output voltage (Accuracy) Min Max
+20Vdc (main) +/- 5% 0 3.25A
VOLTAGE TOLERANCE REGULATION
+20Vdc (main) +/- 5 % 19 ~ 21 V
Adapter
Configuration :
3-wire input AC line (line, neutral, FG)
Input characteristics:
Input Voltage: 100 ~ 240
+10%vac,Full range
Input Frequency: 47 ~ 63 Hz
Input Current : 1.6A max @115VAC,at full load.
0.8A max @230VAC,at full load.
Efficiency: 80 % (min) .at full load .
Output characteristics:
Output power: 65W (max)
Output Current:
Regulation: