Admiral-HT2236 电路原理图.pdf

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1、VOLUME R-17, MOST-OFTEN-NEEDED 1957 RADIO SERVICING INFORMATION Admiral Chassis 3K1 MODEL HT2236 HT2237 COLOR Mahogany B lond CHASSIS COMMON GROUND -4- CHASSIS GROUND RlJ t 500*5 TloudnessI 12AU6 R6 50L6GT t NEC V2 R| - ,A/W-/; %jgf _Lc _L iR8 C/ 7 ? T* csT r500,1 8 TV P ll x l1 tCI2 ClOB BLAC!j CIO

2、C MS M6 35Z5GT V3 - CIOD - CIOA Tt1o to I2AU6 50L6GT VI V SI REJ-0N-0FF SWITCH PIN VIEW OF N5 2(0 0)3 H .047 I9VAC 59 VAC 99 VAC 117 VOLTS AC 60 CYCLES 50WATTS TO REMOVE THE CHASSIS After removing the line cord plug from the wall outlet, clamp the TONE ARM to the tone arm rest. Carefully turn the ph

3、ono graph upside down on a soft, padded sur face. Remove the two screws mounting the chassis to the cabinet. Then turn the pho nograph upright and remove the screw countersunk in the rear of the cabinet. Re move the speed-nuts holding the speaker to the cabinet. The output transformer leads are sold

4、ered to the speakers. Speakers and chassis must be removed as a unit. Dis connect the record changer motor plug (M5) and carefully lift the chassis and speaker assembly from the cabinet. mVAC MS A/VC CS TOTAL 150MME All VOLTACf REAOISCS takes with a vacuum tube VOITHETES All CAPACITOR VALUES IS MICR

5、OfABACS USIESS OTHERWISE SPECIEIEC To Remove the Record Changer: The record changer and its mounting board come out as a unit. Fasten the TONE ARM to the tone arm rest. Remove the six mounting board screws. Tilt the right edge of the mounting board until the rec ord changer and mounting board clear

6、the cabinet lid stay-arm mounting bracket. It should not be necessary to remove this bracket. If, however, it is ever necessary to remove this bracket, care must be taken to avoid damaging the cabinet lid hinges. Carefully lift the record changer and mount ing board from the cabinet. For conven ienc

7、e, the motor plug and audio input plug may be disconnected from the chassis, and the record changer set aside. Service Note: The REJ-ON-OFF switch (SI) on the record changer operates both amplifier and record changer motor. To operate the am plifier and measure voltages with the rec ord changer disc

8、onnected, a short, tem porary jumper wire must be connected be tween common ground and the single lead from one side of the AC line on socket M6 See schematic. Amplifier voltage readings may also be taken by connecting the record changer motor plug (M5) to the socket (M6) on the tone arm rest and move the REJ-ON-OFF switch to the ON position. Set LOUDNESS control for minimum and the TONE control to the center of its range. Do not play record while taking readings. 3 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN