Marantz-2225L-rec-sm 电路图维修手册.pdf

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1、RadioFans.CN 收音机爱好者资料库 TABLE OF CONTENTS SECTION PAGE Introduction . 1 Service Notes . 1 Test Equipment Required for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 AM Alignment Procedure . 3 AM (LW, MW) IF Alignment . 3 LW Frequency Range and Tracking Alignm

2、ent . 3 MW Frequency Range and Tracking Alignment . . . . . . . . . . . . . . . . . . . . . . . . 3 FM Alignment Procedure . 3 Stereo Separation Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Muting Threshold Adjustment . . . . . . . . .

3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Power Amplifier Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Power Supply Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . . 4 Parts List . 22 Technical Specifications . 31 Voltage Conversion . 33 RadioFans.CN 收音机爱好者资料库 LIST OF ILLUSTRATIONS FIGURE PAGE 1. Dial Stringing . 1 2. Front Panel Adjustments and Component Locations . 5 3. Main Chassis Component Locations (Top View) . 5 4. Rear Panel Adju

5、stment and Component Locations . 6 5. Main Chassis Component Locations (Bottom View) . 6 6. FM AM Front End Assembly (Pl00) Schematic Diagram . 7 7. FM AM Front End Assembly (Pl00) Component Locations . 7 8. FM I F Amplifier, Detector, Muting Control and Meter Amplifier Unit Assembly (P200) Schemati

6、c Diagram . 8 9. FM I F Amplifier, Detector, Muting Control and Meter Amplifier Unit Assemby (P200) Component Locations . 8 10. FM MPX Stereo Decoding Amplifier Assembly (P300) Schematic Diagram . 9 11. FM MPX Stereo Decoding Amplifier Assembly (P300) Component Locations . 9 12. EQL. Amplifier Assem

7、bly (P400) Schematic Diagram . 10 13. EQL. Amplifier Assembly (P400) Component Locations . 10 14. Power Supply Assembly (P800) Schematic Diagram . 10 15. Power Supply Assembly (P800) Component Locations . , 10 16. Main Amplifier Assembly (P700) Schematic Diagram . 11 17. Main Amplifier Assembly (P70

8、0) Component Locations . 11 18. Dial Lamp Assembly (PZ01) Schematic Diagram . 12 19. Dial Lamp Assembly (PZ01) Component Locations . 12 20. Filter Assembly (PH01) Schematic Diagram . 12 21. Filter Assembly (PH01) Component Locations . 12 22: Pre-Tone Amplifier Assembly (PE01) Schematic Diagram . 13

9、23. Pre-Tone Amplifier Assembly (PE01) Component Locations . 13 24. Main and Remote Switch Assembly (PT01) Schematic Diagram . 14 25. Main and Remote Switch Assembly (PT01) Component Locations . 14 26. Exploded Mechanical Diagram . 16 27. Wiring Diagram . 18 28. Schematic Diagram . 20 29. Packing .

10、J2 30. Voltage Conversion Chart . l3 RadioFans.CN 收音机爱好者资料库 1 INTRODUCTION This service manual was prepared for use by Authorized Warranty Stations and contains service information for Marantz Model 2225L Stereophonic Receiver. Servicing information and voltage data included in this manual are inte

11、nded for use by the knowledgeable and experienced technician only. All instructions should be read carefully. No. attempt should be made to proceed without a good understanding of the operations in the receiver. The parts list furnishes information by which replacement parts may be ordered from the

12、Marantz Company. A simple description is included for parts which can be usually be obtained through local suppliers. 1. SERVICE NOTES As can be seen from the circuit diagram, the chassis of Model 2225L consists of the following units. Each unit mounted on a printed circuit board is described within

13、 the square enclosed by a bold dotted line on the circuit diagram. 1. FM Front End .:.:=-!-, HI05 2SC644(T) HI06 2SC828 (S) L. _ _ Figure 6. FM AM Front End Assembly (PlOD) Schematic Diagram Figure 7. FM AM Front End Assembly (PlOD) Component Locations . I ,0 u JI35 r J203 C201 .1 H201 H202 _ O H203

14、 2SC829(C) A R216 2.4V 75 R2443.3k C234 .04 r-+Iz 100 H204 2SC829(C) 32V C214 c,tl- R221 2.5v R224 t50 Ik (13.7V J C218 R268 t3.8V lO/t6V 0 _ F- H 207 H2031 R257 47k MUTtNG ADJ - RZ63 100 lQU, I J205 JZ06 J207 I (Ol/J I _ 0V+r7.IVR_Z66wrOJZl_ g 1 2SC373 R264 R265 I tOO tOOk -:Il Figure 8. FM IF Ampl

15、ifier, Detector, Muting Control and Meter Amplifier Unit Assembly (P200) Schematic Diagram Figure 9. FM IF Amplifier, Detector, Muting Control and Meter Amplifier Unit Assembly (P200) Component Locations 8 en C E CI ,p E en . . u CI -I is u . ,p c . c c CI E a. c E .c CI S t.J S Q Q M M !:. !:. :is

16、E :is 51 E 51 en en C C . c . c Q. E Q. C E R407 m J403 R40B R402 22. Figure 12. EUL. Amplifier Assembly (P400) Schematic Diagram Jell IOC35V I IDC 13.7) J806 ?80:.:.7 _ . .:-. _+c:,0_4.J,.,.:.J.;.;_Jall Re0210 .000 ov 7.2V J815 J60l Je03 , peoo POWER SUPPLY -uv - Figure 14. Power Supply Assembly (P

17、800) Schematic Diagram Figure 13. EUL. Amplifier Assembly (P400) Component Locations Figure 15. Power Supply Assembly (800) Compone!1t Locations 10 11 o R767S6k 1/2WI.: I R772 150 1/2W R769 18k 1/2W Rn3 18Dk 1 IsHl4T: :I- J723 Rna Ir H727 0.7V -, t : I;:-O-:,-j-j-+=,- C72;f;-) ,.O-:-:-:L7-02-t_-+_-f

18、J7-24?- 47 :fR771 220 R774.68 v H728 cYQ39 .J nrn7f) J72! 16v 6.Sk IOV 39t( OV -r I y!. )77V I I . I R714 4 l T I H726,H727 2SC945(Oi H728 2SCI31B (RorS) R71r, R712 DC OFFSET R733, R734 lORING CURRENT SET I L C 706 +47116V R722 33 R766 1/2W 2 1/2W J722 E R730 L-J S2 R734.3OCl J70S J706 - - Figure 16

19、. Main Amplifier Assembly (P700) Schematic Diagram Figure 17. Main Amplifier Assembly (P700) Component locations Figure 18. Dial Lamp Assembly (PZ01) Schematic Diagram Figure 19. Dial Lamp Assembly (PZ01) Component Locations H07(R) L _ . TAPE I MONITOR MONO - LOWR _ .J PHOI FILTER MONO MONI fle Q, f

20、iltel Assembly PH01 Schematic Diagram Figure 21. Filter Assembly (PHD1) Component locations I I JJE02 RE02 470k R06 1M REI2 Ik C04 IQ/35V RE147.5K RE42 6,. I RE20 I RE26 I N 2 5 _5 :; _ .,. I I zg N RE3G RE48 220 t-w.-f-CHE06O-J I D I Q. 470k HE06 (R)I V n,;!;?JI IG.7V lOOp r , ,. ,- HEOI HE02 26.7

21、) e : 0 B; -rv) HE05,HE06 HE04 0-;-:;-L-.:l.: N L 4 2.IV la=02 4.7/:08 Sn i .I.;g8+lHE30VB :i6 1 25Cl328 (SorTorU) 27.3V ,I a: a: a: N 2. V HE03,HE04 REID 16 RI2 .Ol RE28 Rg8 .01 ctr.tI 4f.c;n pf_0_v+-.6-_ - fiE51 ,R(JD2 0121 140B JUOi 1902 :002 17 0605 LOOI 2228 WOOl ,0307 JOl8 0313 031 t C004 1180

22、2 Figure 26. Exploded Mechanical Diagram _ :.r. . r-BlK OAG ,j, BLU GAN IvOl i:Oci, TAPE I r I I I i5 1 Jl14 I . . I = -, PIOO FM FRONT. EN D.AM TUNER . DC 35V) Oi III -, I r- , R r- lot-!- - Lr, MAIN _ -.-, IOfh- Ol r- I I I I I -+-O J727 P700 MAIN AMP - :005 HOOI J712 4 1 ,OOS J716 OIO H002 J718 J

23、720 J723 III J722 OUT I fJ Lal. H02 ,. HO J701 I J12411IR;IE ;: I- JOII WOOl IH-+- JOl8 HQJ!l+-:+-y,oov-+-H-t 1 P800 SOOI-.IRIi 12 IIIIJ-i i= : I J , i ., : 808 IOCI4VI .:.;: .;: -.J _ _ , I I ,:.(i: ,-I -I J i :=n rri: II : I VEL 805 I II TERI 0 N 2 . 1-.-,2.2M I 8 1 SI: GRN I I I-Jr J: - h LI; I :

24、 (g(.5 :2 I I lGRN (OS il.!E!:.!.o:j:t:Jrvt:OO001 JZl2(PiOtDiALLAMP -:-Zl:1 I il I p-,p- O i uo,;lali i 1, 1611 I I 4 120VI: I 810 814IOCI I Z02 -,0 ,06 JZ01 O I OM08004.tl002 I ,I-. f-dI, I ,OZ2 2 R -01 IIORG 8OZ 1 ( . ,(.,.(. -I L _ J._o.!. _ l _ J I I REI I I !:J: TAPE I MONITOR MONO LOW HI I I I

25、IOVI IGRY 815 (AC 7.7V I BRNI I br. :I IGI : : : ;:.4 : LPI L2 NO.!:!.0t!. _ .I I L_-,c-_ -I-!0!.LIc.J!Q801 Je04,80 81.!. _ -:-!=:.x=:.x=:;:-_,-_!IEc!.TERI-l I - _:.J:Z:L.: _ : _ : _ :J:Z:t!:J 6Bci,gv + +i/35V I L_OO -i+-_-_-_ -_-_-_-_-_ -_-_ -_ -_ -_1- Figure 27. Wiring Diagram 18 19 _ .-.,.-ew, _

26、- 20 tool GROUND L,oo, 1: PHONO I -+- AUX IN TAPE r r;o;-h. 500 21 -_.I , , , lauADouT I 7 J3 51 JIO I H304,H305 L-.J 25CI327(SorT) % I 8 2-26. 220k J30B_n H306 H301 2SA494IGorY) g R332 ell8 C324 t.k Figure 28. Schematic Diagram Parts List REF aTV DESCRIPTION REF DESCRIPTION DESIG. PART NO. DESIG. a

27、TV PART NO. A 1 297706340 Front Panel AssemblY 0308 4 51380305P R.H. Tapped Screw, R3 x 5 0404 1 297706301 Escutcheon 0311 8 51100314E B.H.M. Screw, B3 x 14 0405 1 285340101 Frame 0313 8 54040302N Spring Wahser 0406 1 293415801 Window 0316 2 282016007 Bracket 0407 8 288625901 Bushing 0317 8 51380306

28、P R.H. Tapped Screw, R3 x 6 0408 1 285425901 Bushing 0321 1 62030039W Lug 0410 1 281825905 Bushing 0322 1 62030039W Lug 0411 1 291510701 Sheet 0324 1 291526702 Heatsink 0415 1 291505301 Cover 0325 1 51100306E B.H.M. Screw, B3 x 6 0503 1 293416022 Bracket B 1 285327340 Flywheel Assembly 1304 2 257706

29、302 Escutcheon 0509 1 145525907 Bushing 1305 1 257727301 Flywheel 0511 4 51100308S B.H.M. Screw, B3 x 8 1306 1 285311201 Shaft 0512 4 53110303E Hexagon Nut 1310 1 53110603E Hexagon Nut 0514 2 51100308S B.H.M. Screw, B3 x 8 1312 1 54020601E flat Washer, P 0515 2 53110303E Hexagon Nut 0516 6 51100308S

30、 B.H.M. Screw, B3 x B C 1 291510341 Pointer Assembly 0517 6 53110303E Hexagon Nut 1404 1 291510301 Pointer 0519 1 54050400R T.L. Washer, OR 1405 1 282610301 Pointer 0524 1 62030039W Lug 1406 1 291510302 Pointer 0530 3 51100306S B.H.M. Screw, B3 x 6 1408 1 291526703 Heatsink M002 1 IN1008030 Lamp 053

31、1 1 282125901 Bushing 0532 2 53110303A Hexagon Nut D 1 120200640 Hook Assembly 0533 2 54050300R T.L. Washer 1504 1 120225801 Hook 0534 2 51060316A P.H.M. Screw, P3 x 16 1506 1 72080802A String 0535 2 55060305S T.R. Rivet 0605 1 281927103 Holder E 1 281915943 Drum Assembly 0606 1 257816052 Bracket, K

32、 0108 1 281915901 Drum 0611 2 51100310S B.H.M. Screw, B3 x 10 0110 1 71101689L Spring 0612 2 54050300R T.L. WAsher, OR 0113 2 51064019A Set Screw 0613 2 53110303E Hexagon Nut 0616 2 51100310S B.H.M. Screw, B3 x 10 0618 2 53110303E Hexagon Nut 0622 1 62041760W Lug 0627 1 62030039W Lug 0703 1 29151605

33、0 Bracket, K 0710 2 51100306A B.H.M. Screw, B3 x5 0713 2 51100306A P.H.M. Screw, P3 x 6 0716 1 281816003 Bracket 0121 1 293416001 Bracket 0717 1 281816004 Bracket 0122 2 51570306B P.H. Tapped Screw, P3 x 6 0718 4 51100405A B.H.M. Screw, B4 x 5 0123 2 289612501 Joint 0124 4 51064019A Screw 0721 4 511

34、00306A B.H.M. Screw, B3 x 5 0125 1 293411201 Shaft 0722 2 51100306A B.H.M. Screw, B3 x 5 0202 2 51440314A P.H.M. Screw S, P3 x 14 0723 2 51100305A B.H.M. Screw, B3 x5 0203 2 54020301 A Flat Washer 0724 1 257710602 Bearing 0204 2 53110303A Hexagon Nut 0725 1 141511801 Spacer 0209 4 51100306S B.H.M. S

35、crew, B3 x 6 0726 2 51040306A F.H.M. Screw, F3 x5 0212 1 121000501 Clamper 0727 2 51490306A B.H.M. Screw FS, B3 x5 0728 2 287105302 Cover 0214 2 281810104 Support 0729 1 291512004 Insulator 0215 2 51100306S B.H.M. Screw, B3 x 6 0731 1 281912005 Insulator 0220 2 116900502 Clamper 0221 2 51102606B B.H

36、.M. Screw, B2.6 x 6 0732 1 285326901 Protector 0222 2 53112603E Hexagon Nut 0733 2 51570305B P.H. Tapped Screw, P3 x 5 0226 1 282110901 Shield 0802 2 51570306B P.H. Tapped Screw, P3 x5 0227 1 295810901 Shield 0803 2 54050300R T.L. Washer, OR 0306 1 291526701 Heatsink 0806 2 51042608A F.H.M. Screw, F

37、2.6)( 8 0307 2 291516007 Bracket 0829 1 287105102 Guide 0833 4 288612002 Insulator 22 REF QTV PART NO. DESCRIPTION REF OTV DESCRIPTION DESIG. DESIG. PART NO. 0901 1 291516006 Bracket 2020 1 291516009 Bracket 0911 1 291516005 Bracket 2021 1 51570306B R.H. Tapped Screw, R3 x 6 0912 2 51060306A P.H.M.

38、Screw, P3 x 6 2022 1 54050300R T.L. Washer, OR 0920 3 292705502 Collar 2023 2 51570306B P.H. Tapped Screw, P3 x 6 1002 1 288627401 Reflector 2028 2 294212001 Insulator 1003 1 288627102 Holder 2029 1 51570306B P.H. Tapped Screw, P3 x 6 1005 2 51480306A B.H.M. Screw F, B3 x 6 2030 1 54050300R T.L. Was

39、her, OR 1006 2 51570305B P.H. Tapped Screw, P3 x 5 2033 1 51570306B P.H. Tapped Screw, P3 x 6 1007 1 138200503 Clamper 2102 4 51570306B P.H. Tapped Screw, P3 x 6 1016 2 288610701 Sheet 2106 1 51570306B P.H. Tapped Screw, P3 x 6 1026 1 291510903 Shield 2109 1 51570306B P.H. Tapped Screw, P3 x 6 1027

40、1 291512003 Insulator 2111 1 51570306B P.H. Tapped Screw, P3 x 6 1102 1 287127101 Holder 2123 1 291526250 Pulley, K 1103 2 51570305B P.H. Tapped Screw, P3 x 5 2128 2 51100306A B.H.M. Screw, B3 x 6 1106 2 287100501 Clamper 2130 1 295826250 Pulley, K 1107 2 51100306A B.H.M. Screw, B3 x 6 2135 2 511003

41、06A B.H.M. Screw, B3 x 6 1112 1 287127401 Reflector 2202 4 257711807 Spacer 1113 2 51480306A B.H.M. Screw F, B3 x 6 2203 1 281825701 Lid 1116 1 287425901 Bushing 2204 1 281825702 Lid 1203 1 285310650 Bearing, K 2205 1 291512001 Insulator 1208 1 516404100 Set Screw C.P. 2206 4 51480406S B.H.M. Screw

42、F, B4 x 6 1209 1 54040402N Spring Washer 2207 10 51100406S B.H.M. Screw, B4 x 6 1210 1 53110403E Hexagon Nut 2208 1 295805601 Buffer 1616 1 297730201 Dial 2225 1 257886101 Label, UL Caution 1620 1 285610701 Sheet 2226 1 293286101 Label, Do not remove. See marking . 1705 1 290825901 Bushing 2228 1 25062