SECTION 1 SERVICE MANUAL TABLE OF CONTENTS I. II. III. IV. V. VI. VII. TECHNICAL DATA DISMANTLING OF UNIT CONTROLS PRINCIPAL PARTS LOCATION LEVEL DIAGRAM MAIN AMP ADJUSTMENT .......................... CLASSIFICATION OF VARIOUS P.C BOARDS.................................... 1. RELATION OF P.C BOARD TITLE AND IDENTIFICATION NUMBER 2. COMPOSITION OF VARIOUS P.C BOARD 2 3 4 4 5 5 6 6 .
I. TECHNICAL DATA 1. Power Amplifier Section Continuous Power Output POWER BANDWIDTH (1HF) SIGNAL TO NOISE RATIO (1HF) RESIDUAL NOISE CHANNEL SEPARATION (1HF) DAMPING FACTOR OUTPUT 20 watts per channel, minimum RMS, at 8 ohms from 20 to 20,000 Hz with no more than 0.5% total harmonic distortion 10 to 45,000 Hz/8 ohms (Total Harmonic Distortion 0.5%) Phono: Better than 85 dB Aux: Better than 95 dB Less than 0.
II. DISMANTLING OF UNIT In case of trouble, etc. necessitating disassembly, please disassemble in the order shown in photograph. Reassemble in reverse order.
VII. CLASSIFICATION OF VARIOUS P. C BOARDS 1. RELATION OF P.C BOARD TITLE AND IDENTIFICATION NUMBER P.C Board Number of P.C Board Main Amp P.C Board MFC P.C Board LED P.C Board m icro M2-5018/A M2-5019 M2-5019A VR P.C Board M2-5019B Headphone P.C Board M2-5019C M2-5022 Tone Control P.
1) MAIN AMP P.C BOARD M2-5018/A, LED P.C BOARD M2-5019A 2. COMPOSITION OF VARIOUS P.
3) VR P.C BOARD M2-5019B WHT/CROSS BLK M2-50.9 M2-5022 VOLUME LOUDNESS 4) HEADPHONE P.C BOARDM2-5019C ISPBl 5) TONE CONTROL P.
2) MFC P.
SECTION 2 PARTS LIST TABLE OF CONTENTS RECOMENDED SPARE PARTS LIST .............. ...17 MAIN AMP P.C BOARD (M2-5018) BLOCK........... 18 MFC P.C BOARD (M2-5019) BLOCK ...... ................ 18 VOL P.C BOARD (M2-5019B) BLOCK................ .18 HEADPHONE P.C BOARD (M2-5019C) BLOCK.....................................18 TONE CONTROL P.C BOARD (M2-5022) BLOCK ..................18 ASSEMBLY BLOC...........................................................................................19 FINAL ASSEMBLY BLOCK..
HOW TO USE THIS PARTS LIST 1. This parts list is compiled by various individual blocks based on assembly process. 2. When ordering parts, please describe parts number, serial number, and model number in detail. 3. How to read list. The reference number corresponds with illustration or photo number of that particular parts list. This number corresponds with the Figure Number. This number corresponds with the individual parts index number in that figure.
1. RECOMMENDED SPARE PARTS LIST Parts No. BA211263 BA211252 BA211274 BA211285 BA211432 BC224807 BD211230 BT225178 BT2 15043 BT215054 BT239591 ED656357 ED551733 ED656278 ED219903 EI697871 EJ650272 EJ698051 EJ225022 EJ240581 E0650823 ES225055 ES225088 ES224965 ES225044 ES219846 ES224436 ES239218 ES242346 ET219870 ET2 19881 ET223446 ET219868 ET219857 ET539987 EV573366 EV224943 EV224954 EV219835 SK224886 SK646817 SK634410 SK225090 SP224662 SZ645243 Parts Nomenclature Multi Function P.C Board Comp.
2. MAIN AMP P.C BOARD (M2 5018) BLOCK Symbol No. 2 1 Parts No. BA211252 2 2 BA270764 2 3 BA27077S 2 TR1.2 ET245790 2 TR3 ET219868 2 TR4 ET219857 2 TRS ET219868 2 TR6 ET219857 2 TR7 ET219868 2 D1 ED656278 2 D2 to 5 ED219903 2 VR1 EV245823 2 L1 2 4 2 5 2 6 2 7 E0650823 EA233932 EA233943 EJ514822 EJ592503 2 R18.19 ER219914 2 C10 EC557155 2 C13 EC474671 Description Main Amp P.C Board Comp. (M2 5018) Main Amp P.C Board Comp. (M2 S018XCEE) Main Amp P.C Board Comp.
Symbol 7.) ASSEMBLY BLOCK Ref. No. Parts No. 7 1 7 2x 7 3x 7 4x 7 Sx 7 6x HEAT SINK BZ211241 ET219870 ET219881 ZS379350 ED551733 ZS608332 7 7x ZS447840 Description No Schematic No. BLOCK Heat sink Block Comp. Transistor 2SD586 (Q)(R) Transistor 2SB616 (Q)(R) Screw, pan head 3x6 Varistor STV 4H Screw, pan head 3x8, w/washer Tapping Screw #2 3x8(BR) 45 1 236 45 1 237 45 10 10 Q'ty: 1 2 2 8 2 Parts No.
8. PHOTO OF FINAL ASSEMBLY BLOCK 8.) FINAL ASSEMBLY BLOCK Ref. No. Parts No. 8-lx 8-2 8-3 BD211230 MZ224627 SE613888 8-4x 8-5x 8-6 8-7x 8-8 8-9 8-10 8-11 8-12 8-13 SZ64S243 ZS214997 BC224807 BC266782 ZW548010 ZS510344 SK224886 SK634410 SK22S090 SK646817 Description Schematic No. Q'ty FRONT PANEL BLOCK Front Panel Block Comp.
9. LIST OF INTERCHANGEABLE SEMICONDUCTORS As far as service is concerned, in case the original parts cannot be obtained, the interchangeable parts listed below can be substituted. 2SB560(E)(F) 2SB616(Q)(R) 2SC1312(F)(G) 2SC1517NP(G)(H) 2SD438(E)(F) 2SD586(Q)(R) LA3122 1S2472VE GP15D SEL105R STV-4H ET2 19868 ET2 19881 ET539987 Utilizing P.C Board M2-5018 M2-8018A M2-5019B M2-5018 M2-5018 M O R Description Original Parts Parts No. Interchangeable Parts Description Parte No.
INDEX Ref. No. & Ref. No. & No. Parts No.
COMPOSITION OF VARIOUS P.C BOARD MAIN AMP P.C BOARD M2-5018/A, LED P.
M2-50I9B
VR P.C BOARD'M2-5019B WHT/CROSS BLK M2-50I9 M2-5018 -5019 5022 BALANCE LOUDNESS VOLUME HEADPHONE P.C BOARD M2-5019C SPA HEAD PHONE TONE CONTROL P.
