Philco-Radio-and-Television-Corp-P1710 电路原理图.pdf

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1、VOLUME R-26, MOST-OFTEN-NEEDED 1966 RADIO SERVICING INFORMATION ALL VOLTAGES MEA- PHILCO Chassis P10ST, continued sured with vtvm x AXX-1wiiuukiiki DDcricmu unnri QI5 HR2 I A M F.M. RP C32 TUNING CONDENSER t QI3 HR26 Q17 FM. IF AW HR26 MIXER IF AMP QI6 HR27 LIMITER * r.Sr.f . . : ALL VOLTAGES MEA SU

2、RED WITH VTVM PRECISION MODEL 88 WITH SELECTOR SWITCH IN FM STEREO POSITION, AFC SW. ON AND NO SIGNAL. r-W: Q6 HR22 F M MIXER Jgr Vl- J JU. T* QI4 HR 11 R.H. OUTPUT Q11 -HR 11 R H OUTPUT Q7 HR 11 L H OUTPUT Q4 -HR 11 LH. OUTPUT * THESE VOLTAGES VARY WITH SIGNAL. S I FUNCTION SW h I QZ 05 HR I 7 HR 1

3、5 RH AUDIO LI 36KC AMP k AMP T 01 VRI HRI7 LOUDNESS LH010 Q10 HR 13 R.H. DRIVER TRANSISTOR BASING BOTTOM VIEW Q 3 HR I 3 L.H. DRIVER Bottom View - Top Component Location PIOST Chassis Q4, Q7, Q6, 09. QI3 Oil. 014 015, QI7, QI6 AM SET FUNCTION SWITCH FOR AM FM STEPS I THRU STEP I 10.7 MC TOP AND BOTT

4、OM FM SET FUNCTION SWITCH FOR FM AND AFC OFF TO MATCHING TRANS VRI LOUDNESS FM STEPS 4 THRU 8 STEP 4 STEP 2 87.5 MC 535 KC * C3I CHASSIS PIOST C4I P25ST COOE 124 C40 PD25ST COOE 126 C37 PDIOOST AM STEP 3 * 1620 KC VC 2 J a - Xrz. step 1 ar 10.7 MC 74 J- TOP AND - AM ( S BOTTOM - STEP 51 er1 K 1 1150

5、0KC I Zll TYPICAL VOLTAGES Q | E | B | C j 7 T3 27 2 7 I 3 2.7 3 2 I 2 7 26 4 O_7 15 5 2_7 315 6 * 5 *1 2 16 7 15 15.8 32 8 6 I 79 0 9 7 e e_ o 10 2 I 2.7 26 11 0 7 15 12 1 6 2 l2J5 i3 86 8 2 0 14 15 IS 8 32 15 66 63 O 16 2 0 20 5 31 5 17 6.2 6 O 16 5.4 5 2 O ATTACH SCOPE GROUND HERE g MATCHING ( O

6、TRANS, DUMMY SPEAKER LOAD RESISTOR AM FM Alignment Points SPKR.TERM. PANEL ALIGNMENT INFORMATION PIOST, P25ST, PD25ST, see also the preceding two pages) Ql 02 03 Q4|Q5 oj oF _Q8 09 010 QM 0l2 015 014 015 0J6 QlS Y Y Y YY .1 .3 0 245 jJJ 23 _J|_ J3 103 243 108 203 103 53 TTT7T7aIY|528 .7 2.1 10.6 25 104 21 10 53 c 23 YY YY YT YY YY 4 .2 O 29 24 12 .3 48 0 323 .4 .2 AM VOLTAGES 104 收音机爱 好者资料库 RadioFans.CN