Marantz 2250B Service Manual Download Page 1 | Manualshive

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Summary of Contents for 2250B

Page 1: ......

Page 2: ... generator to the FM ANTENNA terminals and an oscilloscope and an audio distortion analyzer to the TAPE OUTPUT jacks on the rear panel 2 Set the FM SG to 87 MHz and provide about 3 to 5J 1 V Placethe tuning pointer at the low frequency end by rotating the tuning knob and adjust the core of oscillator coil L104 to obtain maximum audio output 3 Set the FM SG to 109 MHz and provide about 3 to 5J 1 V ...

Page 3: ... Set the FM SG to provide 1 kJ1V at 98 MHz Tune the receiver to the same frequency so that the center tuning meter pointer indicates its center 3 Turn on DOLBY FM push switch Set the semifixed resistors RC01 and RC02 so that the output of the TAPE OUTPUT terminals Rand L become 580 mVat VTVM 8 AUDIO ADJUSTMENT 1 Voltage adjustment Connect a DC voltmeter between pin terminal 804 and 805 and adjust ...

Page 4: ... Figure 1 Dial Stringing 5 ...

Page 5: ...OI I I PIOO 0 1 JU02 01 FM 0 1 JI02 l JIC1 7L 0 JUQ3 r 108 09 D 0008 O 1I r CU02 n I JI J 50 J J1S2 JI56 IRU04 J IJ 5 5 157 MUTING t lEVECC 1 I JU07 IJUO cOO2 AM Z 1_ I C I 06 J404 P400 PHONO J405 J l3 AMP tlJ c JCOe JC 02 XC PCOI JCO l JC06 J I I I IN DUBBIN JOO OU7 GOO t b o 0 I lj 0 JT03 31 Tor 0 rr02 LTOI f _ JT23A FM STOI 1 TO 2 T MONO MONO STOr 3 en ON MUTING STOf 4 2 STOI SOURCE llIPE PTOI ...

Page 6: ...19 J313 21 J307 J30 03 J316 H 1 J308 C0CJ2 r 1T 9JF I 0 iJ J207 J 06 J007 1 JIOO l ryJ2O JI05 J202 LOO3 JI60 JI03 JI6 J 58 PI50 1 I JJ02 JlO JI53 Jr5r JI01 108 JI09 52 r I PIOO II Itl I I I I nJ Lc I I U Ol r 406 J404 I 7 v P400 j Pore PHONO J405 I 1 AMP_ 402 I 5001 2 9 JC08 JC 02 tl JCOI JCOJ I i j r z 19 I flU l I FOOl J r RE J027 T1iNd T FOO3 t N CN Y lGN c J J J803 J802 JSOl J804 I J808 J807 J...

Page 7: ...704 J709 H006 o N r r RHl5 JOIO iSHOl 2 ISHO 3 J027 coo 1 I _ J I j i I PRE 0lIT MAIN IN r L L L LOW FILTER HI FILTER 5 PEOI L JY01T JY04l JY05 JY06 JY07 J l 08 LOUDNESS t SHO H JJ t JiI Cl I 1 I 8 i MOO M002 JYO TJYOI I I 1 I J808 7 J809 J8l0 i PYOI FUNCTION LAMP J022 J J021 SOO2 GOO r I I L J I r For CANAOAo I CN Y I I I r C J J020 FOOl i 1 Rf J027 I TON el FOO3 _ JlGN 9 j __l J803 J80I J804 PBO...

Page 8: ...8 _ _ _ _r_ _ _ _ _ _ Model2250B NOTE This schematic diagram applied to units manufactured for the U S A market 1 ...

Page 9: ...m applied to units manufactured for the U S A market 8 ...

Page 10: ...z 177 N l 2 T l3 1tT T05 ril 076319C H I0000312 2SA763 4 l 11I 1 13 2 I IT30e7 3e 1 I02OOO22 HT30904 IO HTI073 310 HK 64919A HI O 919A lSC87 E IS247 2 2SC94 Q 2547330 2S04I p Q 2S8 49P O R Figure 3 Schematic Diagram 9 ...

Page 11: ...2SC 3 8 CI19 rw C F 6V II I 20PF I Rloa 21K RIO TI e1l7 41 1 O JF I R l I CIOI I I I I I03 CI03 cr09 rOOt PF I ClIO I roooPF I I I RIOI I 61 r o A IFM FRONT END 2S 19Y C IL a I I L J102 Figure 9 FM Front End P100 Schematic Diagram Figure 10 FM Front End PlOD Component Locations 14 I j ...

Page 12: ..._ J HHOO00212 31027 1 41 3 I 4 HTI04942A 25A494Y G 2 HT313272A 25CI3275 T MI I HCIOOO 06 jJPC30C L r P150 I AM Tl NER I I I I 7 Figure 11 AM Tuner P150 Schematic Diagram Figure 12 AM Tuner P150 Component Locations 15 ...

Page 13: ...1 1 11 1111I 1 6 11 J10 1 II n 2e n l to lJ 111 IFM IF AMP HT308291C 25C829C HT30 44tB lSC644S HDIOOOrO IIN60 H0200110 ISI HOlOOO OZ 20A90M I I l IV H204 206 H207 U1II4 Allll I UloffillOl Ih nl Ill v CllO Hl e 1 0 101 IJO 820 IVol I lll v _ 0 11 02 1 0 44 lI rl J2 O czoe 1 n A14 r It Ill It IH UK PI I t 0161 0 _ CUt t O t O 0 01 T e J en ...

Page 14: ...r IU lC HF2003CIC 30 03 _3 I 2Sk30T HT 08Z810 a 25C8285 Figure 15 FM MPX P300 Schematic Diagram 17 Figure 16 FM MPX P300 Component Locations ...

Page 15: ... I Jcor CC03 2 I ce04 F I CC02 2 I He02 14 OV RC04 J L a _ peol DOLBY FM OUT r Ol Heoz HBI3272A I 2SC1327S T I RC03 JCOI Figure 17 Dolby FM Assembly peDl Schematic Diagram Figure 18 Dolby FM Assembly PCD1 Component locations ...

Page 16: ...07 408 HD2DOOl21 IS 2473C v H403 404 HT313442A 2SCI344D E r 4 I HT313441E 2SCI344E I I JOO P400 LP O P _ J402 I I J403 Figure 19 Phono Amplifier P400 Schematic Diagram Figure 20 Phono Amplifier P400 Component locations I 19 ...

Page 17: ...e 6 81 7V 704 R705 II 100 t J H7 04 P700 MAIN AMP R1 03 OK cro 133 v C102 01 I I_ro IJ702 r I I I Jro Figure 21 Main Amplifier P700 Schematic Diagram G F06 J P8 oV J t J710 1711 J1l2 G j G 1 1 G Figure 22 Main Amplifier P700 Component Locations 20 ...

Page 18: ...sIO I JOO J a06 coO 22 F ov H804 H803 7 0 1 3 cv I I I 1803 r H808 Q8Cl HeOI r 10 44 v J O r ri V i ca c I I at I Figure 23 Power Supply P800 Schematic Diagram Figure 24 Power Supply P800 Component Locations 21 ...

Page 19: ...r W CO 0 I HTI01212A ZSA 121S T I I I I I I I I I I I Figure 25 Pre Tone Amplifier PEOn Schematic Diagram Figure 26 Pre Tone Amplifier PEOn Component locations ...

Page 20: ...1 0 J 0 poo 1 Figure 27 Filter PH01 Schematic Diagram RH16 N RH15 JH13 JH18 JH12 JH16 0000 SHOl 5 lit Figure 28 Filter PH01 Component Locations Figure 29 Monitor PT01 Schematic Diagram 23 8Hl e 2 A lU J Figure 30 Monitor PT01 Component Locations ...

Page 21: ...Mm 10 1 l J l 7t7t g J L W j IOl _0 u ra I rUCII 1 Figure 31 Dial Lamp PZ01 Schematic Diagram Figure 32 Dial Lamp PZ01 Component Locations Figure 34 Function Lamps Assembly PY01 Component Locations Figure 33 Function lamps Assembly PY01 Schematic Diagram ...

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