Ampeg_ba115_schematic 电路图 维修原理图.pdf
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Ampeg_ba115_schematic 电路图 维修原理图.pdf
DCBA 4 3 2 NOTES: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 1) CAUTION: SHOCK HAZARD! 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER. SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. DCBA 1 FE 1 Signatures: Checked: Drawn: Sheet Class Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Drawing Size: Drawing Type: Schematic Tolerance: Released: REVDateDESCRIPTION E 0 7/01/99 1 - OK CONTROL ISSUE SWAPPED J21 PINS 1 SET AP1 BIAS ADJUST CONTROL FOR 5mV ACROSS R61 WITH NO SIGNAL APPLIED, NO LOAD. NOTE: R11 & C7 DESIGNATORS ARE NOT USED. R13 100K 100K R12 L R J3 22 uF C5 50V 22K R16 22K R15 C4 22 uF 50V 270 R3 270 R2 R10 22K 22K R17 P4 50K LIN P5 50K LIN 2 3 1 U1:A TLO-72 6 5 7 TLO-72 U1:B CW CW P3 50K LIN U2:A TLO-72 47K R24 C16 .0022 uF 100V C8 56 pF 200V PAGE_NEXT CCW CW P2 20K RA R20 100K TLO-72 U2:B 3.3K 1/2W R7 R14 100K 10uF C9 35V D3 1N9141N914 D5 +40V-40V VTL-5C7 R8 1K D2 1N914 R23 47K R25 10K 33 pF C12 200V NE5532 U3:A C11 10uF 35V S D G Q6 J112 1N914 D4 R4 1K R59 1M50V 1 uF C44 R6 3.3K 1/2W R22 1K -16V 820 1W R5 33K R19 33 pF C10 200V C17 .1 uF 100V R28 3.3 1W +40V 47 R33 D7 1N4744 ZENER Q4 MJE-340 +16V R34 220 1K R50 10uF C31 35V R41 220 D6 1N4744 ZENER Q2 ASSY P/N 07-103-02 C2 .047 uF 100V 1 3 2 XLR M H J5 R26 47 330 pF C13 100V U3:B NE5532 R9 220 SLVE_SW SLEEVE TIP_SW RING RING_SW TIP J4 T/R/S C20 1 uF 50V D8 1N4744 ZENER R49 47 SEE NOTE. MPS-A06 Q3 R44 4.7K 1K R43 R35 220 Q1 MJE-350 -16V -40V 220 R31 1K R42 500 AP1 CW 1 2 J21 .1 3W R61 -40V D9 1N4744 ZENER Q5 IRFP-140R 收音机爱好者资料库 Ra d i o Fa n s .CN
