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Summary of Contents for Dr. Rhytm DR-550 MK II

Page 1: ...urce Battery Life Current Draw g Dimensions Weight Accessories Options J 40 to 250 Audio Cassette Tape MIDI Max 6 5 Vp_p L or R Max 0 35 Vp_p Tape Save Less than 82 5 dBm L or R DC 9V SUM 3 Battery x...

Page 2: ...y non Top Cas Rubber Switch 22495241 LCD RCD 1 013R 15029506 Rubber Connector for LCD 23365653 e1 Main Board Assy 7316903000 NOTE 1 Replacement Main Board Assy consists of the following 2 PCBs 1 jfe M...

Page 3: ...l h non c b i iz ml tt l o b Main Board 1 2 2 2 LCD dA Xd y l o la M LCD DM 9 P 3 LT fc l o c Soldering point P 2 3r EB ft 1 L TT l o V DR 550mk2 Precautions when removing the main board 1 2 The LCD a...

Page 4: ...ft To 22015963 Battery Case 23455182 Terminal Spring 23455180 Terminal Spring 23455181 Terminal Spring Display Cover KNOB BUTTON 7 V 22485211 Knob JACK SOCKET y r j 7 Uhr j h 13429642 M S2 3P 1344942...

Page 5: ...ows Supply of master clock Access to memories RAM and ROM Envelope operation and pan operation Output of digital operation results to DAC IC103 Receiving MIDI information and Transmitting to the CPU D...

Page 6: ...550mk2 APRIL 1992 NOTE Replacement Main Board Assy consists of the following 2 PCBs Main Board Assy TIB 2 To Main Board Assy 1 2 pcb 2292586803 1 2 Main Board Assy 2 2 pcb 2292586803 2 2 WOtl GNflOS...

Page 7: ...Wn n 40 JK2 IC2 MB076O4PF G BND 17 L_ nJ 24 1 4 31 6 30 a 2 6 3 a 29 11 28 7 4 22 25 lo 23 21 26 23 27 9 5 12 6 13 2 7 14 B 15 9 19 10 IB 11 16 12 RA2 1Kx4 MNR34J5A1C 31 B 12 1 21 32 7 wv 20 33 6 3 1...

Page 8: ...e to the warble 3 While pressing the SHIFT button press 10 on the keypad Start playback on the tape recorder D Press the START button Press the START button before the tape playback sound changes from...

Page 9: ...ss the ACC button to exit the test 5 If normal the LED will go out and the LCD will show OK PATTERN VOICE II U L H L I DIL U 2 lLl ls k 3 STOP CONT tt t MLCD D X h 4 ACC tt 5 LED AT LCDII TOKJ tltt 3...

Page 10: ...Manual or check the following points while referring fc 01 11 LT TIE Cl to the circuit diagram frolic Tl S no Is there a signal IC fft a1II iIES o Is the power supply for the ICs etc correct 9 a y 9 T...

Page 11: ...S5 15 S26 35 P51 55 XT1 75 S6 16 S27 36 P52 56 XT2 76 S7 17 S28 37 P53 57 N C 77 S8 18 S29 38 POO 58 XI 78 S9 19 S30 39 SCK 59 X2 79 S10 20 S31 40 SBO 60 P60 80 111 Gate Array IC2 on MB2 MB87604PF G...

Page 12: ...o return to the Song STOP CONT y NTt V y 4 E K CR U Play mode lto H 0 _ 1 L 1 Cause 1 During the process of verification the correct data was not received Remedy Readjust the volume on the tape record...

Page 13: ...1 9 94 06 1 7 ER00118 DR 5 5 Omk H SERVICE NOTES ERRATA SUPPLEMENT JE H ifffi Small errors are ignored fi C U x i7...

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