Dell 20030125151045333_1700FP_A[1].SG061.E.02 free download

File name 20030125151045333_1700FP_A[1].SG061.E.02.pdf

1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings 1. For continued safety, do not attempt to modify the (READING SHOULD circuit board. NOT BE ABOVE 0.5mA) 2. Disconnect the AC power and DC Power Jack before servicing. DEVICE LEAKAGE CURRENT UNDER TESTER 3. When the chassis is operating, semiconductor TEST TEST ALL heatsinks are potential shock hazards. EXPOSED METAL SURFACES 1-1-2 Servicing the LCD Monitor 2-WIRE CORD 1. When servicing the LCD Monitor, remove the static charge by connecting a 10k ohm resistor in series ALSO TEST WITH PLUG REVERSED with an insulated wire (such as a test probe) (USING AC ADAPTER PLUG AS REQUIRED) between the chassis and the anode lead. EARTH GROUND (Disconnect the AC line cord from the AC outlet.) 2. It is essential that service technicians have an Figure 1-1. Leakage Current Test Circuit accurate voltage meter available at all times. Check the calibration of this meter periodically. 4. With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the 1-1-3 Fire and Shock Hazard unit's AC switch first in the ON position and then Before returning the monitor to the user, perform the OFF, measure the current between a known earth following safety checks: ground (metal water pipe, conduit, etc.) and all exposed metal parts, including: metal cabinets, 1. Inspect each le