General-Electric-Co-T106 电路原理图.pdf

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1、VOLUME R-18, MOST-OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION GENERAL ELECTRIC Models T105 and T106 TO REMOVE CHASSIS FROM CABINET To remove chassis from cabinet, remove cabinet back. Unsolder the output transformer leads from the speaker. Remove the four self-tapping screws, (hex- heads) one on e

2、ach corner of the chassis, and the single hex screw just below the tuning gang capacitor. Pull off the volume control knob. The tuning control knob is held to the cabinet, so the chassis must be pulled out of the cabinet, at the same time pulling it off the tuning knob, which remains on the cabinet.

3、 When pulling out the chassis, it is best to grasp the tuning capacitor (Cl) by the thumb and forefinger of one hand, the tuning knob by the other hand and pull. CAUTION: It is important to use extreme care re placing parts and/or soldering on this chassis. Too much heat on the chassis will cause th

4、e copper plating to become unbonded. Only apply the soldering iron long enough to melt the solder and pull out the part to be replaced. TO REPLACE A TUBE SOCKET Cut the socket free by cutting all of the socket terminals at the chassis and unsolder the center terminal. Now, heat each terminal only en

5、ough to push it out. The new socket can now be inserted into place. TO REPLACE THE VOLUME CONTROL Remove the shaft nut and the fibre washer, then cut the center and lower terminals. Apply only enough heat to the upper terminal to pull out the control. Apply heat to the center and lower terminals so

6、they may be pushed out. The new control may now be in serted into place and soldered. Make sure the fibre washer is in place before installing the shaft nut. NOTE: The shield cans on T1 and T2can be removed by unfastening the two spring clips and lifting the cans off the transformers, thereby leavin

7、g the coils open for inspection or repair. ALIGNMENT CHART STEP CONNECT TEST OSCILLATOR TO V2.12BA6 grid (pin 1) in series with ,05mf. V1.12AU6 grid (pin 1) in series with . 05mf. TEST OSC. SETTING F. ALIGNMENT TUNING GANG SETTING ADJUST FOR MAX. OUTPUT Cores of 1st l.F. xformer T/ recheck adjustmen

8、t of T/ and T2 R. F. ALIGNMENT Inductively coupled 1620 KC to radio loop Tuning gang open C1D completely For Maximum Output C1B y1, Iadjust for| MAX9A55KC V3 i2Av 0ET- AUDIO AMP /is. Ic4 fi S =5 1 ADJUST FOR MAXJ I500KC WHILE I N ROCKING GANG. ( N adjust FOR MAX. (5H620KC GANG fully open cf 5 |C0_L i tfsanT lL rnirsLir UNLESS QTmE R*_SE NjTtD CAPACit0RS MOPE ThAN i WMF CAPACTORS LESS THAN |*MF. RESISTORS ARE Z *ATT Ki000 Mt,COO.O:C DC VOLTAGES l|7 v LINE TC 8- WTh 20.000n/V0LT VETtR. .vcin fj 5000 It) 1 R4C? I 65 收音机爱 好者资料库 RadioFans.CN