LG lg precision goldstar os5020 free download

File name lg_precision_goldstar_os5020.pdf

OSCILLOSCOPE OS-9020G SERVICE MANUAL @ LG Precision Co., Ltd. Servicing Precautions Please read all instructions in the service manual throughly before servicing. Disconnect power cord from power source before opening the enclosure. Instructions 1. To maintain the precision and reliability of the product use it in the standard setting (temperature 10 o -35 o centigrade, humidity 45%-85%) 2. After turning on power, please allow a 15-minute pre-heating period before use. 3. Triple-line power cord is to be used for the product. But when you are using the doubleline cord, make sure to connect the earth terminal of the product to the earth at the power source for safety. 4. For quality improvement the exterior design and specifications of the product can be changed without prior notice. Warranty Warranty service covers a period of one year from the date of original purchase. In case of technical failure within a year, repair service will be provided by our service center or sales outlet free of charge. We charge for repairs after the one year warranty period expires. When the failure is a result of user's neglect, natural disaster or accident, we charge for repairs regardless of the warranty period. Notice This Serivce Manual describes the most typical product of this model. If there are any specific differences between this Manual and the servicing unit, please contact Goldstar Precision sales office in your area. LG Precision Co-, IdtcA CONTENTS G E N E R A L . . ... 4 S P E C I F I C A T I O N S ... 5 A C C E S S O R I E S ... a P R E V E N T I V E M A I N T E N A N C E ... 9 C I R C U I T D E S C R I P T I O N . . ... 10 C A L I B R A T I O N . . ... 14 6-l. Calibration Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6-2. Test Equipment Required.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 6-3. Preliminary Procedure.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6-4. Preliminary Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6-5. Initial Starting Procedure.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7,