LG MC021AADJ free download

File name MC021AADJ.pdf

ADJUSTMENT INSTRUCTIONS 1.Safety Precautions 5. Purity & convergence Adjustment 1. It is safe to adjust after using insulating transformer between the power supply line and chassis input to prevent the risk of 5-1. Preparation for Adjustment electric shock and protect the instrument. Adjustment should be operated when using the CPT(without 2. Never disconnect leads while the TV receiver is on. ITC from CPT manufacturing place) 3. Don't short any portion of circuits while power is on. 4. The adjustment must be done by the correct appliances. *This adjustment must follow the sequence as shown picture 5. Unless otherwise noted, set the line voltage to 220Vac!10%, below. 50Hz. 5. The adjustment of TVshould be performed after warming up 5-2. Purity Adjustment for 15 minutes. 1) Degauss the CPT and CABINET enough. CPT Assembling As preparatory operations before 2.Test Equipment required assembling CPT, wind cotton Tape for 1. RF signal generator (with pattern generator) protecting to CPT NECK and DY, CPT 2. DC Power Supply connection parts. At this moment, end of 3. Multimeter (volt meter) tape should be over-lapped and wound in 4. Oscilloscope direct route to the NECK. 5. Color analyzer Assembling DY to CPT Fix the Magnet to the position as shown 3.DVCO Adjustment picture below. Be careful not to make CPT neck shadow while adjusting DY. 1) This is for adjustment of VPC9407,crystal oscillator HEAT RUN frequency after receiving a company Digital pattern.(PAL:EU05CH,NTSC:13CH) 6pole 4 2 2) When entering adjustment mode by pressing IN-START Degaussing button,DVCO adjustment is operating automatically. (T/X doesn't operating occassionally during DVCO adjustment.) STC Adjustment