Alto MS1, Service Manual

Page 1: ...MODEL MS1 ...

Page 2: ...CONTENT 1 INTRODUCTION 1 2 TECHNICAL SPECIFICATION 1 3 BLOCK DIAGRAM 2 4 SCHEMATIC DIAGRAM 3 5 PCB LAYOUT 4 6 TEST PROCEDURE 5 7 EXPLODED VIEW MECHANICAL PARTS LIST 15 8 BOM 17 ...

Page 3: ...FLAT S N 110dB unweighted 22Hz to 22kHz SYSTEM SPECIFICATIONS THD 0 005 typ 0 dBu 1khz unity gain FLAT INDICATORS Input level CLIP LED display 7dBu AC adaptor USA Canada 120V 60Hz U K Australia 240v 50Hz Europe 230V 50Hz POWER SUPPLY Power consumption 5W Dimension 130 W 117 D 45 H mm 5 1 4 6 1 7 PHYSICAL Net weight 0 8kg z 16 effects preset z 2 channel input and output connectors are compatible wi...

Page 4: ...2 3 4 5 6 J2 OUTPUT LCH 1 2 3 4 5 6 SW1 4BIT ENCODER 12V SIGNAL SENSE G CLIP POWER SUPPLY AC 15V 200mA INPUT 12VDC 12VDC AC ADAPTOR 1 2 3 4 5 6 J3 INPUT RCH INPUT GAIN 12V ENCODER 4BIT CONTROL 1 2 3 4 5 6 J4 OUTPUT RCH A0 A1 A2 A3 A0 A1 A2 A3 3 BLOCK DIAGRAM 2 ...

Page 5: ...078 C21 0 1u cer C27 0 1u cer C36 47U 25V R14 1 10K C10 22P 5 6 7 U3B MC33078 C52 220nF R29 30 0K C2 100nF R23 10 0K R27 150 0K R6 15 0K R34 1 0K R38 220 0K R36 1 20K R40 1 50K C54 10nF C4 27nF 5 6 7 U4B MC33078 R46 100K 1 2 3 4 5 6 SW1 288S0366 VCC VCC VCC VCC L3 FL5R L4 FL5R ZD5 12V 1W ZD8 12V 1W ZD6 12V 1W ZD7 12V 1W VCC R55 9 1K IN CH2 IN CH2 IN CH2 IN CH2 C46 2 2U 25V C47 2 2U 25V C49 2 2U 25...

Page 6: ...PCB MS1 Bottom Layer Bttom Overlay Bottom Solder PCB MS1 Top Overlay 5 PCB LAYOUT 4 ...

Page 7: ...n LCH RCH OUTPUT SPECIFICATION Test Frequency dBu Corresponding Function Encoder Setting Binary System 20HZ 70HZ 100HZ 1KHZ 8KHZ 20KHZ FLAT 0000 1 0 1 0 0 5 0 5 0 5 0 5 0 5 0 5 1 2 0 8 5 0 3 0 DRUM KICK 0001 9 5 11 5 7 5 9 5 6 0 8 0 0 5 1 0 1 2 0 8 5 0 3 0 ANTIRUMBLE 0010 11 5 9 5 3 5 1 5 2 5 0 5 0 5 0 5 1 2 0 8 5 0 3 0 CONCERT HALL 0011 0 5 1 5 5 0 7 0 4 5 6 5 0 5 1 0 1 2 0 8 5 0 3 0 ARENA SUB 01...

Page 8: ...GAIN VR to maximum the output is 20 2dbu the distortion 0 01 It must select the corresponding filter when test the distortion 4 Adjust INPUT GAIN VR set the output to 6 5 8 5dbu make sure the CLIP LED lights up slightly at the moment 5 Adjust INPUT GAIN VR set the output to 0 0 2dbu at the same time make sure the scale of GAIN VR at 0dB position 6 According to the following table to test the frequ...

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Page 17: ...7 EXPLODED VIEW MECHANICAL PARTS LIST 15 ...

Page 18: ...10 5 5mm RF 011 4 6 NI00002 T plastic nut HC00108 accessories φ7 16 G20 15 4 8 2 7 ME00081 T nut HI00107 φ7 1 8 MF00014 shakeproof washer φ3 φ6 5 0 5t 3 9 MG00036 screw M3 4 7 10 NC00131 T wooden washer 1 φ11 3 φ15 3 red 2 11 MC00769 ZC top cover ALTO MS1 1 12 NI02386 plastic knob φ14 13mm 1 13 NI00363 plastic knob φ21 16mm 1 14 MG00386 screw M3 4 2 15 MG00058 screw M2 4 1 MECHANICAL PARTS LIST 18...

Page 19: ...ramic capacitor 0603 0 22uF 25V X7R 10 C1608X7R1E224KT TDK C51 C52 17 CI00175 SMD ceramic capacitor 0603 1 0uF 16V X7R 10 C1608X7R1C105KT TDK C65 C66 C67 C68 18 CI00047 SMD ceramic capacitor 0603 10PF 50V C0G 0 25PF C1608C0G1H100CT TDK C25 C26 19 CI00062 SMD ceramic capacitor 0603 330PF 50V NPO 5 C55 C56 20 SF00049 transistor PMBFJ176 SOT23 PHI TR1 TR2 TR3 TR4 TR5 TR6 TR7 TR8 21 RD00282 SMD precis...

Page 20: ... electrolytic capacitor 2 2uF 50V φ5 11mm C46 C47 C48 C49 C50 50 CB00256 electrolytic capacitor 1000uF 25V φ10 20mm 5mm C42 C43 51 AC00179 tin without lead RS M705E Sn 3Ag 0 5Cu 52 HA01919 jump 5mm W10 W14 W16 W17 W22 W25 W26 W27 W29 W30 W31 W33 W35 W38 W39 W42 L5A L5B 53 HA02249 wire φ0 6_tin plating 54 HA01925 jump 10mm W1 W2 W3 W4 W5 W6 W7 W8 W9 W11 W12 W13 W15 W18 W19 W20 W21 W23 W24 W28 W32 W...

Page 21: ...er case MS1 ALTO_V1 1 90 NB04291 barrier MS1 164 84mm _V1 0 91 NB04290 barrier MS1 215 183mm _V1 1 92 HA05010 wire RS φ6 3 STCO φ4 2C 1250mm 93 TG00195 adaptor RS 230V 50Hz_AC15V 200mA_EI 41_UL CSA 94 NA00120 PE bag 0 04t 220 200mm 95 NE05004 label ALTO 96 NH00334 cone paper 0 040 1m 97 AD00012 twin adhesive RS 90 120mm_V1 0 98 NE15702 lable MS1_V1 0 99 NI00014 membrane 0 035 1M 100 NH00012 bond p...