Akai DV-R4025VSS, Service Manual

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5. DESCRIPTION OF THE INTEGRATED CIRCUITS
5.1 SMPS TRANSFORMER
1.
GENERAL INFORMATION
Main Voltage Operations:
Main Drop-out Voltage:
Mains STart-up Voltage:
Operating Frequency:
90Vac - 265 Vac
Max. 90 Vac
Max. 90 Vac
60 KHz
2. ELECTRICAL CHARACTERISTICS
WINDING
PrimaryInductance
PIN.NO
2-4
INDUCTANCE 6DESCRIPTION
1.5mH10% <0.50W
1. Primary Leakage inductance (Pin 2-4) L1.5mH
2.2 WITHSTANDING VOLTAGE
The transformer shall sithstanding a voltage of 4 Kvms for 1 minute and 1 mA between
primary and seconday winding and also 2 Kvms for 1 minute and 1 mA between
primary winding with core and secondary winding with core.
2.3 INSULATION RESISTANCE
The insulation resistance shall be ore than 500M between primary and seconday
windings when the applied voltage 300 Vdc for 1 minute
2.4 ELECTRICAL CHARACTERISTICS
1. Before taking measurement Pp01 will be to give 5.0Vdc on 5.0Vdc line at Minimum
setting of controls and a mains voltage 220 Vac.
2. Before taking a measurement, DVD set should be working at least 5 minutes on
Normal condition
2.1 STATIC CHARACTERISTICS
DVD
Service Manual
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