General-Electric-Co-RP2142 电路原理图.pdf

VOLUME R-25, MOST-OFTEN-NEEDED 1965 RADIO SERVICING INFORMATION GENERAL ELECTRIC Models RP2040A, RP2041A, RP2140, RP2142, RP2143 RIGHT CHANNEL OUTPUT 3SEHS LEFT CHANNEL r-i 150 rak_ OUTPUT 35EH5 CHANGER PWG & CAP (RUSTIC) I V.WJJIJ TO REMOVE RECORD CHANGER Open record changer compartment and place record changer into playing position. Remove two (2) screws from the back cover and remove back cover. Place the shipping screw clips to a ver tical position. Lift the record changer and tilt upwards, until the plastic power plug and signal plugs are accessible. Remove plugs from record changer. Remove record changer from compartment. TO REMOVE AMPLIFIER Follow Steps 1 through 4 as described under TO REMOVE RECORD CHANGER. Remove knobs from control panel. Free all wires from the metal lead dres ser tabs. Slide the AC power receptacle from the bracket. LKj rightchannel To phase speakers Place a one and one-half 000, meg |.000.000 50DC4 Arrows indicate clockwise rotation. DC voltages measured with 20,000 ohms per volt meter. Line voltage maintained at 120VAC. Remove tape and wire nuts connecting the speaker leads. Be sure to label speaker leads to assure proper phasing when re assembling. Remove screw holding electrolytic. Remove all tubes from amplifier. Remove nuts holding amplifier to cabinet and remove amplifier. TO REMOVE SPEAKER Unclasp speaker wing clamp and swing out speaker enclosure. Lift wing enclosure off hinges and place grille front on a soft cloth. Remove six (6) screws from speaker enclo sure back and remove back. Unsolder and label speaker leads to as sure proper phasing when reassembling. Remove nuts holding speaker to grille and remove speaker. TEST-BAIS POINTS FOR Vl * V2 CATHODES BALANCE VOLUME 43 收音机爱 好者资料库 RadioFans.CN