Onkyo SKW-50, Service Manual

Page 1: ...ISK OF FIRE AND ELECTRIC SHOCK REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBER APPEAR AS SHOWN IN THIS MANUAL MAKE LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE MDD 120V AC 60Hz 072001 ...

Page 2: ...tion manual for low level inputjacks Other AUTO STANDBY ON OFF with CANCELLING Switch Sensitivity Speaker level 2V Line 45mV Accessory SKW 50 1 Replacing the fuse This symbol located near the fuses indicates that the fuse used is fast operating type For continued protection against fire hazard replace with same type fuse For fuse rating refer to the marking adjacent to the symbol Ce symbole indiqu...

Page 3: ...P RECEIVER AUTO STANDBY LINE INPUT L R OFF ON OUTPUT TO SPEAKERS MONO _ L _ R _ L _ Power switch and indicator Frequency adjusting knob Output level adjusting knob Speaker level input terminals Speaker level output terminals Low level input jacks Auto standby switch To AC outlet SKW 50 PANEL VIEW ...

Page 4: ...mplifier is equipped with a monaural subwoofer jack connect it to the SKW 50 Left LINE INPUT jack R SPEAKER LEVEL INPUT FROM AMP RECEIVER AUTO STANDBY LINE INPUT L R OFF ON OUTPUT TO SPEAKERS MONO _ L _ R _ L _ L R Connection with a preamplifier Preamplifier Output terminals R SPEAKER LEVEL INPUT FROM AMP RECEIVER OUTPUT TO SPEAKERS _ L _ R _ L _ R _ L _ Connection with receiver s amplifier s spea...

Page 5: ... LE VE L LIN E INPU T AU TO STA ND BY L R OF F ON B14 B28 B2 B23 B18 B27 B19 B20 B17 A18 A17 A13 A12 A8 U3 Q951 Q952 Q516 Q541 A1 Q515 R602 A3 A23 U1 T901 F901 U5 A19 A14 A20 P901 A16 A15 U2 U4 U9 U8 U7 B16 A11 B3 B10 B25 A6 A3 P535 A22 B8 B6 B14 B24 SKW 50 EXPRODED VIEW ...

Page 6: ...r 2A UL T 237 Fuse 252253 2A T UL ST2 Fuse P535 2009990611UL NSAS 2P0833 Socket P901 253272HIT AS UC 6 18 Power supply cord Q515 2203063 or 2SC5198 O Transistor 2203062 or 2SC5198 R Transistor 2202524 or 2SC4468 Y Transistor 2202526 or 2SC4468 P Transistor 2202523 2SC4468 O Transistor Q516 2203053 or 2SA1941 O Transistor 2203052 or 2SA1941 R Transistor 2202514 or 2SA1695 Y Transistor 2202516 or 2S...

Page 7: ... 3 0 2 1 2 L P F 1 2 D B O C T 5 0 2 0 0 H Z L P F 1 2 D B O C T 5 0 2 0 0 H Z B A L A U T O _ S T A N D B Y O N O F F C I R C U I T M U T E C I R C U I T T H E R M A L P R O T E C T I O N C I R C U I T C U T O F F F R E Q U E N C Y V O L U M E R C A I N S P E A K E R I N P U T O U T P U T N A E T C 6 8 6 7 2 N A E T C 6 8 7 0 2 2 1 d B N A A F 6 8 6 6 2 5 O H M S P E A K E R N A A F 6 8 6 5 2 N A...

Page 8: ... 5 8 6 4 7 C 3 3 9 0 1 C 3 4 0 0 1 C 5 0 2 1 5 1 C 5 0 5 0 2 0 C 5 0 3 1 5 1 C 3 6 6 2 2 3 Z C 3 1 8 1 0 2 K C 3 1 6 1 0 2 K C 3 1 5 1 0 2 K C 3 1 7 1 0 2 K C 6 3 0 1 0 4 C 3 0 6 1 0 1 C 5 2 7 4 7 5 0 C 3 2 2 4 7 1 6 C 5 0 1 2 2 0 6 3 C 5 0 4 4 7 0 6 3 C 6 2 1 1 0 5 0 C 9 5 2 2 2 0 1 6 C 9 5 1 2 2 0 1 6 C 9 5 4 2 2 0 1 6 C 9 5 3 2 2 0 1 6 C 3 0 2 4 7 1 6 C 3 0 1 4 7 1 6 C 3 2 0 4 7 1 6 C 3 0 5 4 7...

Page 9: ... 6 4 7 A C Q 5 1 6 2 S A 1 9 4 1 2 S A 1 6 9 5 0 5 A 9 3 3 S S Q 6 0 3 2 S A 9 3 3 S Q 5 4 1 2 S C 3 4 2 3 Q 5 0 6 2 S C 2 2 2 9 Y Q 5 1 0 2 S C 2 2 2 9 Y Q 5 1 5 2 S C 5 1 9 8 2 S C 4 4 6 8 Q 5 1 3 2 S C 4 7 9 3 Q 5 1 8 2 S D 6 6 7 A C Q 6 0 1 2 S C 1 7 4 0 S S Q 6 0 2 2 S C 1 7 4 0 S S P 5 0 1 A P 9 0 2 A P 9 0 1 A P 5 3 5 A P 5 3 1 D 9 3 1 D 9 3 2 D 6 0 1 1 S S 1 3 3 R 3 5 6 2 0 K B 2 2 R 3 5 6...

Page 10: ...7A C Q519 2215173 2SB647A C Q601 Q602 2213284 or 2SC1740S R or 2213285 or 2SC1740S S or 2215864 KTC3199 GR Q604 2215780 or KRA103M or 2212600 or DTA124ES or 2213580 RN2203 Q605 Q606 2213354 or 2SA933S R or 2213355 or 2SA933S S or 2215995 KTA1267 GR Q621 2215810 or KRC103M or 2213160 or DTC124ES or 2214220 RN1203 Q622 2213285 or 2SC1740S S or 2213284 or 2SC1740S R or 2215864 KTC3199 GR Diodes D601 ...

Page 11: ...7A C Q519 2215173 2SB647A C Q601 Q602 2213284 or 2SC1740S R or 2213285 or 2SC1740S S or 2215864 KTC3199 GR Q604 2215780 or KRA103M or 2212600 or DTA124ES or 2213580 RN2203 Q605 Q606 2213354 or 2SA933S R or 2213355 or 2SA933S S or 2215995 KTA1267 GR Q621 2215810 or KRC103M or 2213160 or DTC124ES or 2214220 RN1203 Q622 2213285 or 2SC1740S S or 2213284 or 2SC1740S R or 2215864 KTC3199 GR Diodes D601 ...

Page 12: ...20 374722244 0 22uF 5 50V Plastic C630 374721044 0 1uF 5 50V Plastic C903 C904 374731044 0 1uF 5 100V Plastic Resistors R533 453630334 RNU1WCJ 3 3 R531 R532 4500018 BPR58FK 0 22 R526 443521514 RS1 2WBJ 150 R528 443523314 RS1 2WBJ 330 R615 443521234 RS1 2WBJ 12K R934 443521024 RS1 2WBJ 1K R953 R954 443526824 RS1 2WBJ 6 8K R931 R932 443628214 RS1WBJ 820 R544 5210359 N06HR100BC Clamp E812 260224 CP 1...

Page 13: ...SCT 5P876 JL953B 25051090 NSCT 6P877 OP AMPLIFIER PC BOARD NAAF 6867 2D ICs Q303 Q305 22240369 M5218AP Capacitors C322 C344 354744709 47uF 16V Elect C339 C340 374721044 0 1pF 5 50V Plastic C341 C343 374721244 0 12pF 5 50V Plastic C345 C347 374721244 0 12pF 5 50V Plastic Sockets P304 2009990672UL NSAS 6P0935 P305 2009990601UL NSAS 12P0814 Plags P304A 25055234 NPLG 3P218 P305A 25055237 NPLG 6P221 P5...

Page 14: ...9990603UL NSAS 2P0817 Terminal P901A 25060092 NTM 1S33 Plug P902A 25055676 NPLG 2P632 Fuse holders F901A F901B 25052133 NSCT 1P2031 Cover C902A 27301216 SB1925A VOLUME CIRCUIT BOARD NAETC 6870 2D CIRCUIT NO PART NO DESCRIPTION Resistors R328 5132475 N14RGL20KA25Z R356 5132476 N14RGL20KB25Z STANDBY CIRCUIT BOARD NAETC 6873 2D CIRCUIT NO PART NO DESCRIPTION LED D641 225295 SML1216W ...

Page 15: ...ndicator changes from red to green c Next short circuited the terminal of P604 䇭䋲䋮Adjustment of idling current a Adjust the trimming resistor R544 so that the voltage of P531 becomes 0 25mV Auto Standby Switch is OFF position No input and no load 䋩 b After 5 minuters read just R544 so that the voltage becomes 4mV 䇭 ADJUSTMENT PROCEDURES R544 4 4 P531 P623 P604 Confirm that indicator changes from g...

Page 16: ...O SP EA KE RS MO NO SP EA KE R LE VE L LIN E INPU T AU TO STA ND BY L R OF F ON B33 B36 B32 B31 B43 B35 B34 B37 B40 B39 B44 B45 The setting position before shimpment FRONT PANEL OUTPUT LEVEL RIGHT ABOVE CROSSOVER FREQUENCY RIGHT ABOVE POWER SW OFF REAR PANEL AUTO STANDBY SWITCH ON The set is put for side SKW 50 PACKING VIEW ...

Page 17: ...ot B33 80 000 470 01 Cushion B34 80 000 470 11 Cushion B35 84 001 923 01 Carton box B36 85 000 400 11 500x1550x0 5t Protection sheet B37 85 000 354 21 Protection sheet B39 29100097 1A 250x350 Poly bag B40 29365090 Warranty card B43 87 000 996 01 Instruction manual B44 89 000 482 01 Label B45 85 000 376 61 700 x 950 Poly bag ...

Page 18: ...A CORPORATION 18 Park Way Upper Saddle River N J 07458 U S A Tel 201 785 2600 Fax 201 785 2650 E mail onkyo onkyousa com Sales Product Planning Div 2 1 Nisshin cho Neyagawa shi OSAKA 572 8540 JAPAN Tel 072 831 8111 Fax 072 833 5222 ONKYO CORPORATION ...