WARNING: 180VDC IS BETWEEN POWER SUPPLIES.
| LIMITER DRIVE | |||
FOP_DRV | AMP_OUT |
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| R3 |
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| BAT85 |
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| 560K |
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| R1 |
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| R6 |
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D5 | D6 | 1K | R4 | R5 |
| 56K |
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| D7 |
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| TLO72 |
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BAT85 |
| BAT85 | 560R | 1K5 |
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D8 | D34 |
| 3 | 1/2 |
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| D9 |
| BAT85 |
| U2 |
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| BAT85 |
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| 10u |
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| 1 |
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| C9 |
| BAT85 | 2 |
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| FOP_OUT |
| C10 |
| R9 |
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| 470n | D20 |
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| 1K5 |
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| 6V |
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| R8 |
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| R2 |
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| R7 |
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| 1K |
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| 56K |
| 560K | LIMIT |
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| R89 |
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| Q22 |
| 1M |
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| Q1 |
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| BC550 | |
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| FLOATING OP AMP |
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| J108 |
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| R28 |
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| 2K49 |
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| 8 |
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| R26 |
| C16 |
| FOP_OUT |
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| BIAS | |
| 7 | AMPIN |
| 17K8 |
| 330p |
| PT1 | A | |||
TO M1019 |
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6 | LIMSIG |
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| CW |
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| 6 |
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| 4K7 |
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PREAMP BOARD | 5 | SG | U3 |
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| 7 |
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| 4 | VTL5C8 |
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| 5 |
| R29 |
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| FETCTL |
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| U2 |
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| 3 |
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| 68R |
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| 2 | +15V | AMP_OUT |
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| 1/2 |
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| TLO72 |
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| 1 | LG | LIMIT |
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| R27 |
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| R30 |
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CONN2 |
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| 17K8 |
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| 2K740 |
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| C15 |
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| 100p |
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| FOP_DRV |
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| SG |
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| 2K2 |
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| R38 |
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| Q4 |
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| BC560 |
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| QUIET TURN ON/OFF |
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| 22V/.5W | C30 |
| 10K |
| C31 |
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| 1N5251B | 25V |
| R81 |
| 25V |
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| ZD7 | 1u |
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| 2u2 | |
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| 1M | |||
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| FETCTL | |
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| R82 | |
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| 2K2 |
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| D25 |
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| R80 |
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| D23 |
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| D24 | 1N4004 |
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| 1N4004 |
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| D26 | |
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| NORTH AMERICAN POWER SUPPLY |
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| MR752 | ||
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| T1 | TAB9 |
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| D27 | ||||
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BLACK | TAB1 | WC2 | WC4 | WC3 | TBKR1 | WC5 | TAB2 |
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| MR752 | |
| F1 |
| S2 |
| 13A/85C |
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| TAB6 | RED |
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| D28 | ||||||
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| 370VA |
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| MR752 |
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| C25 |
| TAB7 | YEL |
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| WC11 |
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| 120VAC |
| D29 | ||||
GREEN |
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| 250V |
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| 400V |
| 100n | #1202 |
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| MR752 |
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| TAB5 | RED |
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| 4n7 |
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| D30 | |
WHITE |
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| TAB8 |
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TAB4 |
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| TAB3 |
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| MR752 | |||
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| D31 |
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| EUROPEAN EXPORT POWER SUPPLY |
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| MR752 | |||
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| T1 |
| TAB9 |
| D32 | |
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BROWN | TAB1 | T2.5A | WC2 | WC4 | WC3 | TBKR1 | WC5 | TAB2 |
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| MR752 |
| F1 |
| S2 |
| 13A/85C |
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| TAB6 |
| D33 | ||
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| RED | ||||||
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| 370VA |
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| MR752 |
GRN/YELL | WC11 |
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| 250V | 230VAC |
| TAB7 | YEL | NOTE: XFMR FOR SEMKO UNITS | |
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| 250V |
| 100n | #1207E |
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| IS #1202S WHICH HAS A RESETTABLE |
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| TAB5 |
| BREAKER IN THE PRIMARY WINDINGS | |||
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| RED | |||
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| 4n7 |
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BLUE | TAB4 |
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| TAB3 |
| TAB8 |
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THIS PRESENTS A SIGNIFICANT SHOCK HAZARD. | PLEASE, USE EXTREME CAUTION WHEN SERVICING! |
| +FLOATV |
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| +90V |
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| J108 |
| MJ15022 |
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| MTA2955 | MJF15031 | ||||||
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| (U2) |
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| MTA3055E | MJF15030 | ||||||
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| +FLOATV | +FOPV |
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| MJ15023 |
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| D | Q14 |
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| R33 |
| R35 | 16V/1W | G N |
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1K8 |
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| S | MTA3055E |
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1K |
| 220R | 1N4745 |
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| D S G |
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R31 |
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| +40V |
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| R77 |
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| ZD5 |
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| Q15 |
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| D14 |
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| 270R |
| MBS4992 |
| B BOTTOM | E |
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| MJ15022 |
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| 0.5W |
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| 2K87 |
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| 0.5W | R50 |
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| 5W | R62 |
| R73 |
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| VIEW |
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| R34 |
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| BAV21 |
| 22R |
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| D1 |
| 0.5W |
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| 390R |
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| D10 |
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| MR854 |
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| 270R |
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20K0 | C17 |
| Q3 |
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R32 | 3n3 |
| BC550 | BAV21 |
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| R72 |
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| G D S |
| B C E | |
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| 100V |
| C19 |
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| 0.5W |
| MT1 NC MT2 |
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| Q2 |
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| Q13 |
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| R51 |
| 220n |
| R63 |
| 270R |
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| 5W |
| R71 |
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| BC550 |
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| MJE15030 |
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| 33K |
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| 390R |
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| D15 |
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| 0.5W | R52 |
| 0.5W |
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| 7915 | 7815 | ||||||||||
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| MAC224 |
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| MBR160 |
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| Q12 |
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| 270R |
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| BC550C |
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| 1R |
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| D11 |
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| C35 |
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| MJ15022 |
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| MR854 |
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| R70 |
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| D21 |
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| 0.5W |
| BC560C |
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| R36 |
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| AGND |
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| 270R |
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| 33R2 |
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| 100V | C22 |
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| 10R |
| Q11 |
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| R53 |
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| 100n |
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| R37 |
| BC550 |
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| 270R |
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| 1 |
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| 16V/1W |
| C21 |
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| R90 |
| R54 |
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| 0.5W |
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| 1N4745 |
| 25V |
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| 180R | 6K8 |
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| R58 |
| R59 |
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| ZD3 |
| 470u | AGND |
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| 5W | 5W |
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| C B E |
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| 10u |
| D16 |
| 27R |
| 0R18 |
| 0R18 |
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| AMP_OUT |
| MT1 | MT2 | G |
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| REF | IN | OUT | OUT REF IN | |
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| C32 |
| BAV21 | R57 |
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| L1 |
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| 6V |
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| 680R |
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| |
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| R40 | 10u |
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| 5uH |
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| C33 |
| BAV21 |
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| R92 | R74 |
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| |
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| 6V |
| D17 |
|
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| R60 |
| R61 |
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| 2W | 0.5W |
|
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| |
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| AGND | 5W | 5W |
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| 3R9 |
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| ||||||
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| 18R |
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| |||||||
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| 0R18 |
| 0R18 |
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| AGND |
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| |||
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| R91 | 0.5W | R55 |
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| 16V/1W |
| C24 |
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| R75 |
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| ||
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| C36 |
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| ||||||
|
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| 180R | 6K8 |
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| 0.5W |
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| ||||
|
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| R56 |
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| 2 |
|
| 1N4745 |
| 25V |
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| ||||
| 10R |
| Q7 |
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| ZD4 |
| 470u |
|
| 220n | 18R |
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| ||
|
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| WC6 |
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| ||||||
| R39 |
| BC560 |
|
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| 270R |
|
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| AGND |
|
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| |||
| R41 |
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| C23 |
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| |||
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| 100V |
|
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| WC7 |
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| ||
| 33R2 |
|
| C38 |
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| MR854 |
|
| R69 | 100n |
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| |
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| |||||
| D12 |
|
| 15n |
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| Q9 |
|
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| R49 | D22 |
|
| 0.5W |
|
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|
|
| 5 | 3 | 1 | JB2 |
|
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| 0.5W |
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| ||||
| MBR160 |
|
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| MJ15023 |
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| 270R |
|
|
| Q17 MT2 |
|
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|
| OUTPUT |
|
| ||||
|
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| 1R |
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| T | R | S |
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| ||||||||
|
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| D18 |
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| R68 |
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| MAC224 |
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| |||||||
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| Q5 |
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| R48 |
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| 6 | 4 | 2 |
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| |||||
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| Q8 |
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| 0.5W |
|
|
| G | MT1 |
|
|
| |||||||
|
| BC560 |
|
|
|
| MJ15031 |
|
|
| 33K |
| C26 | 5W | R64 |
| 270R |
| R78 |
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
| BAV21 |
|
|
|
|
|
|
| 100V |
| 220n |
| 390R |
| R67 |
| R79 |
|
|
| 5 | 3 | 1 | JB1 |
|
|
| |
|
|
|
|
|
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|
|
|
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|
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| 39K |
|
|
|
|
|
| ||||||||
20K0 | C18 |
| Q6 |
|
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|
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|
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| 0.5W |
| 10R |
|
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| ||||||
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| |||||
R42 | 4n7 |
| BC560 | D13 |
|
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|
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| 270R |
|
| MT1 |
|
|
| T | R | S | OUTPUT |
|
| |
|
| C34 |
|
|
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|
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|
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| D2 |
|
|
| R66 |
|
|
|
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|
|
| |||||||
| 2K87 |
| BAV21 |
| 0.5W | R47 |
|
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| Q18 |
|
|
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| |||
|
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|
|
| MR854 |
| R65 |
| 0.5W |
|
|
|
|
| 6 | 4 | 2 |
|
| |||||||
| R44 | 4n7 |
|
|
| 22R |
|
|
|
|
|
| 5W |
|
| MBS4992 | G |
|
|
|
| ||||||||||
|
| R83 | D19 |
|
|
|
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|
|
| 390R |
| 270R |
|
| MT2 |
|
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| |
|
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|
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|
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| Q10 |
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| |||||
|
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| R76 |
|
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| |
|
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| 270R |
|
|
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|
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|
|
|
| 10u |
|
|
|
|
|
|
|
|
|
| 8R/200W | |
1K8 |
|
| 16V/1W |
|
|
|
|
| MJ15023 |
|
|
|
|
|
|
| 0.5W |
|
|
|
|
|
|
|
|
|
|
| |||
|
|
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|
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| C29 |
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
| 1N4745 |
|
|
|
|
|
|
|
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| 270R |
|
|
|
|
|
|
|
|
|
|
| 15" | ||||||
R43 |
|
|
|
| S |
|
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|
|
|
|
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|
|
| |||||||
|
|
| ZD6 |
|
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|
|
|
|
|
|
| 25V |
|
|
|
|
|
|
|
|
|
| ||||
| R45 |
| 220R | G P | Q16 |
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
| #7333 | ||||
|
|
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|
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|
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|
|
|
|
|
|
|
|
|
| ||||||
| 1K |
| R46 |
|
| D | MTA2955 |
|
|
|
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|
|
| WC8 |
|
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| |
|
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|
|
| DC PROTECTION |
| PHONE JACK + |
|
|
| ||||||||||
|
|
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|
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|
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|
|
| PHONE JACK - |
|
|
| ||||||||||
|
|
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|
|
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|
| |||||||||
|
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| (U2) |
|
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| ||||||
|
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|
| ||
|
|
| POWER AMP |
|
|
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|
|
| AGND |
|
|
|
|
|
|
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| |||
|
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|
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| TC1 |
| ||
|
|
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|
|
|
|
|
| 3u3 |
| ||
|
|
|
|
|
|
|
|
|
|
|
|
| LOW VOLTAGE POWER SUPPLY |
|
|
|
|
| ||
|
|
|
|
|
| +90V |
|
| +40V |
|
|
|
|
|
|
| 100V |
| ||
| C3 |
|
|
|
|
|
|
| R10 |
|
|
| +15V |
|
|
|
|
| ||
|
|
|
| C5 |
|
|
| 1W |
|
|
|
|
|
|
| TR1 |
| |||
| 100V |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 5W | 10R |
| |
|
|
|
| 100n |
|
|
| 470R |
|
|
|
|
|
|
|
|
|
| ||
| 5600u |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
| Q20 | 7815 | 7915 | Q21 |
|
|
|
|
| ||
|
|
|
|
|
|
|
|
| R11 |
|
|
|
| R14 |
|
| ||||
|
|
|
|
|
| +40V |
|
| 1W |
|
| 1 IN | OUT 3 | 3 OUT | IN 2 |
|
| 1W |
|
|
|
|
|
|
|
|
|
|
| 16V/1W | REF | REF |
|
|
|
| |||||
|
|
|
|
|
|
|
|
| 470R |
|
|
| 470R |
|
| |||||
C1 |
|
|
|
|
|
|
|
|
| 1N4745 |
| 2 | 1 |
|
|
|
|
| ||
0.5W | R85 | 0.5W | R88 | C6 |
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
| 1W |
| ZD1 | 35V | 35V | 35V | 35V | 0.5W |
| 1W |
| LE_SON | ||||||
4700u |
|
| 100n |
|
|
|
|
|
| |||||||||||
50V |
| 27K |
| 27K |
|
|
|
| R12 |
| C11 | C13 | 1u | 1u |
| R20 | R16 |
| 8R/30W | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
| WC9 | WC12 WC14 | 470R |
| 16V/1W | 1u | 1u | C14 | C12 |
| 4K7 | 470R |
| #7417 | |
|
|
|
|
|
|
| 1N1745 | TANT | TANT | TANT | TANT |
|
|
| ||||||
C2 |
| R86 |
| R87 | C7 | AGND |
| LED1 | R18 | R13 | ZD2 |
|
|
|
|
| R15 | R19 |
|
|
50V | 0.5W | 0.5W |
|
| RED | 0.5W | 1W |
|
|
|
|
|
| 1W | 0.5W |
|
| |||
4700u | 27K | 27K | 100n |
|
|
| 1K | 1K8 |
|
|
|
|
|
| 1K8 | 1K |
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
| R17 |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
| 1K5 |
|
|
|
|
| SG |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
| WC13 | WC15 | ZD8 |
|
|
|
|
|
|
|
|
|
|
|
|
| C4 |
|
|
| C8 |
|
| 22V/.5W |
|
|
|
|
|
|
| M1018.SCH_DATABASE_HISTORY |
| |||
| 100V |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
| 1N5251B |
|
|
|
|
|
|
|
|
|
|
|
|
| 5600u |
|
|
| 100n |
|
|
|
|
|
|
|
| MODEL(S):- |
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
| # DATE | VER# DESCRIPTION OF CHANGE |
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
| NOTES: |
|
|
| 1 | SEP/13/94 | 2.70 | PC#4665_XFMR_FOR_SEMKO_TO_#1202S |
|
| ALL UNMARKED DIODES 1N4148 |
|
| 2 | APR/02/96 | 2.80 | PC#5050_ADD_470R+4N7_AT_Q6_R83,C34 | |
|
| ADJUST PT1 FOR 1.5 TO 2.5mV BETWEEN TP1 AND TP2 WITH AMP COLD |
| 3 | JUN/28/96 | 2.90 | |||
|
| SG AND LG CONNECTED TO AGND AT POWER SUPPLY |
|
| 4 | OCT/15/96 | 3.00 | ||
|
|
|
|
|
| 5 | APR/10/97 | 3.10 | PC#5355_ADD_R92_C36 |
|
|
|
|
|
| 6 | DEC/04/97 | 3.20 | PC#5545_ADDED_TWEETER |
|
|
| BM400 |
|
| 7 | FEB/02/99 | 3.30 | XFMR_WIRE_COLOURS_UPDATED |
| DATE: JUN/28/2000 | MODELS: | SCH ISSUE: | 3.40 | 8 | JUN/28/00 | 3.40 | ||
| BM400E | ||||||||
|
|
|
|
| 9 | D | V | N | |
|
|
|
|
|
| ||||
YORKVILLE | NAME: M1018V33.SCH | PCB#: | M1018 | TITLE: BASS_AMP_400W |
| 10 | D | V | N |
