General-Electric-Co-T140A 电路原理图.pdf

tBUPLATE TWO SPURS 3 2a AT OOjv OA SET VOLUME CONTROL AT MAXIMUM COMCCT OUTPUT MITER OR SCORE ACROSS VOICE COIL MOUCTIVELT COUPLE SIGNAL CEMERATO* to RECEIVER STIR St SET SIG CEN AT A9SMC WITH RECEIVER TIMMS CANO OR N STER S SET SIG SEN AT HJOIC. WITH RECEIVER TIMMS GANG OREM. STIRS-SET SIG GEN AT 1900KC TUNE RECEIVER TO I900RC V5 33W4 VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION GENERAL ELECTRIC MODELS T-140A, T-141A TO REMOVE CABINET BACK Place cabinet on end using a soft cloth to protect the finish. insert a screw driver between cabinet bottom and cabinet back next to one of the slots in the cabinet bottom. Turn screw driver, forcing tab on bottom of cabinet back out of its slot. Repeat procedure with other tab on cabinet back. Slide out and down, releasing top tabs from top slots. TO REMOVE CHASSIS After removing cabinet back, remove fishpaper chassis support. Then remove the screw on cabinet bottom holding metal chassis support. Pull off loud ness control knob and loosen hex nut on loudness con- TO VOLUME CONTROL TO SWITCH trol shaft. The tuning knob is a captive knob and remains in the cabinet front. Unsolder speaker leads. Close the tuning gang to prevent any possible damage to the plates. Slide one hand under the printed chassis board placing the fingers over the front edge. Slide the board back out of the grooves on both ends, simultaneously removing the tuning gang shaft from the tuning knob. When replacing the chassis, close the tuning gang and line the flat side of the gang shaft up with the flat side of the tuning knob opening. Place the ends of the board in the grooves and push on the edge of the board, not on the components. The tuning shaft will enter the tuning knob and the front edge of the board will seat itself in the grooved bosses inside the cabinet front. Replace the board supports. TO ANTENNA LI TO INTERLOCK TO VOLUME I I CONTROL 44 收音机爱 好者资料库 RadioFans.CN