Admiral-528 电路原理图.pdf

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1、VOLUME R-19, MOST-OFTEN-NEEDED 1959 RADIO SERVICING INFORMATION R2I C20 R27 Cl I C2I SI R2Q CI9 CIS 1 RIO /C9 R22. VfiA V I I f A RI5 R9 Rll C8 T2 R7 2NI39 I CIS 1 RIO /C9 /d/Rfi/ C7/1N295 4R0 AJK X R26 /R29 / 1N295 / T3 RI2 CIO R5 2NI39 2N217 R25 R14 CI7 A) Ri3 CI3 R4 7 Admiral -C31B -R30 C3G CI L3

2、 R32 CHASSIS 6T2 MODELS 521 528 I.F. 455 KC. TOTAL com AT OOA/O APTAOHAAATILT IO.SMA mnmom COATML AT OH AW* A AO AO S/COAL AfTUCO REMOVING THE CHASSIS Remove Tuning knob and Volume control knob by working them forward and off the shaft. Open cover on rear of cabinet. Remove the battery case. CONVERT

3、ER 1 ZN139 I 1ST IF 1 02 On the front of the cabinet, loosen the two Phillips head screws adjacent the tuning shaft. Loosen the hex nut that secures the Volume control to front of case. Hold the printed circuit board while removing the two screws and hex nut, to prevent damage. Gently lift the circu

4、it board from within cabinet. /F /* ,NZ95 T2 vL/ T3 vA) VOLUME - - _L/ pffll Q) , 3 2 6 Py 1 r - wpV 7 CSlA ,ir 1 1 Jci2 V J?3 cJ Jci -IS3If Co J r? E 7 1 lC30 c =t5. =fcl2 15.6MMF 2sv y C3I8 MMF - oi v BlC! , 1 1 IN295 _| i(5?_5Lii_ _osico_ _i ACC 1 -H- 05 05 11 1? 04 TOS 060 15 -15s 15011 To5 110

5、-!? i i (im T05 R22 f4n0 1000 4 3V ir“ 100 |l50 IE jv 3- f2200 MT3 SPEAKERS 8 SC0NNECTE8 FROM T5 SECONDARY T0.T5_ ARED A BLACK R2I -_ LUEi 1RED 1 BLACK ARED B + OMO eP T ICT A CI7 T B-BUSE oe*. -1 rSn 1 Jrw V r 03 *-vvv- =pC41 *LifjP I :R2 T3 C.- R|5 t MM, 3W1 C A ?6f C5 rvS*-!BT, 3 T2 vCI2 R2305 %

6、eIFJaI ,*c9 C,9T+ cw *R, L %PiRe/*! View of Printed Wiring Boord NOTE; Groy area represents printed wiring; black symbols and lines represent components and wiring on opposite side. B-BUSS R 32 TR23”Q5 iiNi SI OFF-ON * L3 w St. -g+I P27 frczo * V0LUME f- -r Ct9rJ JRIO P7 #-Wv*7 R3t MCE jREEN UIANT. COMMON GROUND 收音机爱 好者资料库 RadioFans.CN