Noblitt-Sparks-Industries-Inc-175401 电路原理图.pdf

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1、VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION A Models 53R05, 53R07, Code 1.74401, Models 53R17, 53R19, Code 1.75401, Models 53R27, 53R28, Co.de 1.76001, and electrically similar Models 13R35, 13R37, Code 1.74501, which use dual speakers and are less clock. 32ET5OR 34GD5 eS-lIB3P 5

2、 GiLLl-G? / r # -it-j L,r + 90V = -0-JV I6FY6 I8FX6 I8FW6 32ET5 36AM3 0 REPEAT BUT TON - AUTO BTME SET (REAR) X_ 9 =3305*0 3 p ON-OFF-AUTO SWITCH The small knob (2) below clock face operates a tbree position switch. When the knob is turned to the center position the radio will be turned off. With th

3、is knob in the left position, the radio receiver is turned on. After allowing about 30 seconds for warm up, the radio receiver will be in operation if the TUNING (3) and the VOLUME (4) CONTROLS have been properly adjusted. When this (2) knob is turned to the right position, the radio will be turned

4、on automatically when the hands of the clock indicate the time for which the AUTO POINTER is set. I-/1_ PLUG “li-1 105-120 VOLTS 1 ! AC -1 30 WATTS E) EXTERNAL CONNECTIONS TO PRINTED BOARD VOLTAGES MEASURED WITH A V.T.V.M. CAPACITANCE VALUES LESS THAN (DARE IN MICROFARADS Uf ), AND VALUES OF ( I ) O

5、R GREATER ARE IN M|CROMlCROFARADS Uul ), UNLESS OTHERWISE INDICATED. ON-OFF-AUTO lv OUWE KNOB jwtch MiTOPOMira alignment procedure PRELIMINARY : Output meter connection.Across speaker voice coil Output meter reading to indicate 500 milliwatts (standard output). 1.0 volts Connection of generator grou

6、nd lead.Floating ground Generator modulation.10% 400 cycles of Trimmer I. F. Oscillator Antenna * Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6 in dia meter placed about one foot from the set loop. The alignment procedure should be repeated in the original order for greatest acc

7、uracy. Always keep the output from the signal generator at its lowest pos sible value to make the AVC action of the receiver ineffective. Position of Variable F requency of Generator Dummy Antenna Generator Output Connection Trimmers Adjusted in Order Shown for Maximum Output Open 455 Kc .05 p fd Pin 7 18FX6 Al. A2, A3. A4 Open 1670 Kc * Test Loop A5 1400 1400 Kc * Test Loop A6 1000 1000 Kc * Test Loop Fan CIA Plates 600 600 Kc * Test Loop Fan CIA Plates 收音机爱 好者资料库 RadioFans.CN