Western-Auto-Supply-Co-D2634 电路原理图.pdf

MANUAL OF 1948 MOST-OFTEN-NEEDED RADIO DIAGRAMS TRUETONE MODEL D-2634 ALIGNMENT-Sets are properly aligned at the factory with precision equipment and the adjustments should not be disturbed unless a coil, tuning condenser or IF transformer has to be replaced or the set has been subject to damage or tampering. Alignment should only be done with the oid of an accurate signal gen erator and output indicating instrument. TO PROPERLY ALIGNRemove chassis from cabinet, and align I. F. Transformers in the conventional man ner with a Signal Generator adjusted to 455 KC, con nected to the grid of the 6SA7 through a .1 Mfd. con denser, with the tuning condenser set at minimum capacity. To align tuning condenser, carefully place loop in normal relation to chassis, connect Signal Generator to antenna clip through a .0001 Mfd. con denser. Adjust oscillator trimmer condenser (located on left top) to 1620 KC with tuning condenser at mini mum capacity (complete out of mesh). The antenna ond R. F. sections are trimmed at 1400 KC. Antenna trimmer is top right; R. F. trimmer is below at right. Dial pointer may be adjusted to scale by slipping pointer coupling on dial cord. 2SGS2A L00* ONLY GftNDQ . ANT 25713 SPEAKER TRANSFORMER 25712 SPEAKER(MANTLE MOOCLS) OSC. TRIM. ANT. TRIM. 5Y36T RECTIFIER. PHONO-TONE CONTROL . END OF SEC0NOARY NEXT TO TERMINALS. vjM gkounc OOT, SLOT OR HOLE. OSCILLATOR COIL. 25724 j-H0- PHONO-TONE CONTROL SI SHOWN IN RADIO- HIGH POSITION. REAR VIEW. AVO O o ALL RESISTORS W. A 20% UNLESS OTHERWISE INDICATED. O O CAPACITORS IN MFO. UNLESS OTHERWISE IN0ICATC0. *J VJ GRIB GROUND I.F; 4S5 KC. VIEW LOOKING O VOLTAGES MEASURED WITH A 1000 OHMS PER VOLT O.C. AT PIN ENOOP METER SCTWEEN CHASSIS AN0 POINTS DESIGNATED. ANTENNA PLUG Cl, Ct, C3.-TUNING CONDENSER *26392 VIEW LOOKING AT PIN END OF PLUG ON SPEAKER. (ON CONSOLE ONLY.) 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN