Yamaha MR1642 Service Manual - Page 14

MR842/MR1242/MR1642 MR842/MR1242/MR1642 •MR-I Circuit Board MR- I C34.1 . :k373 • 8375 • R377. • . --t4-- D301 -44D303 C343 p • L301 SW3C13 D305 C339 C340 R.367 R368 1365 a 8366 R363 Q303Q304: ::1:164. R361 8359 8362 R360 8357. C346 -4 /- 1371 R369 --4)- C345 mu *358 R372 R370 C337 C338 VR303 VR304 GROUP1/AUX1 03.06 j/ soI L302 E4W304 C342 C441 R374 .1473 • R378 R475: WM C344 C443 R477 D34044-7 D302 D401 13403 -- J-T5 \ L401 D405 C439 C440 • R467 R465 0. • R463 . Q403 1461 .1468 R466• •:• Q404 • R464 R462 . R459 •• 8457 :•R471 R469 Q401 Q402 R410 • C446 -4 . R458 R472. R470.. C445 tq.r; EAN405 C437 VR403 VR404 0438 D4 WI7 L402 SW406 C442 R474 *478 R476 13Z1D402 ' C444 Notes) CircOt Board: MR-I (NX806730) VU meters (AUX/CUE) 1. IC IC 307, 407: NJM4558DV (IG001390) OP AMP. 2. Transistor Q 301, 302, 401, 402: 2SC1313 (IX802930) Q 303, 304, 403, 404: 2SA726 (IX802920) 3. Diode D 301-304, 401, 404: 1N6OP (IF000620) 4. LED D 305, 306, 405: 103HD 02 RED (IX802980) PEAK 5. Potentiometer VR 303, 304, 403, 404: 50KB 3P (HX802040) PEAK adj. 6. Slide Switch SW 303, 304, 405, 406: SSSB222NF1-PJ (KX801910) GROUP 1-4 7. Analog Meter L 301, 302, 401, 402: TN-72-8656 (CX804430) GROUP2/AUX2 GROIJP3/AUX3 GROUP4/CUE Pattern side -:410) •MR-J, MR-J1 & MR-J2 Circuit Boards SUB IN L, 1, 3 R, 2, 4 J201 M J202 •MR-K Circuit Board AUX RTN 1 •-F4dB L R J801 J802 AUX RTN J85I J852 R203 T211W.-GTG223W R202 R201 Irmo R204 Components side (firilf&IHJ) Notes) " Circuit Board: MR-J (NX806740) GROUP SUB IN 1, 2 " Circuit Board: MR-J1 (NX807650) GROUP SUB IN 3, 4 " Circuit Board: MR-J2 (NX807660) ST SUB IN 1. MIC Jack J 201, 202: RDJ-245 (LX801230) SUB IN " The J1 (J2) circuit board is essentially the same as a J circuit board. The difference of J1 (J2) circuit board from J is only the length of wires of connector assembly. ( J , J 1, J - \ - irroODAnODROW.,Li3