Crate_BFX-25a_(07S446)_Schematic电路图.pdf

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1、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、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 S

3、ignatures: Checked: Drawn: Sheet Class Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Drawing Size: Drawing Type: Schematic Tolerance: Released: REVDateDESCRIPTION E A 10/21/99 1 - REM VALUE CANGES CONTROL ISSUE 0 B 1/31/2000 12/21/99 INITIAL ISSUE R00278 C of Drawing Title: Drawi

4、ng Number: NONE 1 Ecr(s)/Ecn(s) First Used On: ST. LOUIS MUSIC, INC Date: 7/16/99 11880 Borman Drive, St. Louis, MO 63146 Chgd ByAppvd by F BFX25a 07S446-XX 2 PWA - BASS AMPLIFIER Date 4 3 DCBA 4 3 2 NOTES: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: TO AVOID RISK OF ELECTRIC

5、 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) VOLTAGE

6、S 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 Drawin

7、g Size: Drawing Type: Schematic Tolerance: Released: REVDateDESCRIPTION E A 10/21/99 1 - REM VALUE CANGES CONTROL ISSUE 0 B 1/31/2000 12/21/99 INITIAL ISSUE R00278 C of Drawing Title: Drawing Number: NONE 1 Ecr(s)/Ecn(s) First Used On: ST. LOUIS MUSIC, INC Date: 7/16/99 11880 Borman Drive, St. Louis

8、, MO 63146 Chgd ByAppvd by F BFX25a 07S446-XX 2 PWA - BASS AMPLIFIER Date 4 3 R31 1K 1/2W R32 100 SLVE_SW SLEEVE TIP_SW RING RING_SW TIP TRS HEADPHONE J4 T/S J3 EXT SPEAKER D-GND JWOPT1 R24 680 BROWN BROWN 2 1 J5 156-2V D10 1N4002 D11 1N4002 J9 WHITE BLUE AC NEUTRAL GRAY/WHT AC NEUTRAL AC VOLTS TO S

9、WITCH J9 WHITE AC VOLTS TO SWITCH BLACK D13 1N4002 D-GND C3 100V 220 pF 50V 2.2 uF C4 C2 200V 56 pF T/S J1 INPUT R1 22K R3 15K R2 220K C1 100V .047 uF D1 1N914 D2 1N914 2 3 1 TLO-72 C6 100V .001uF 100V 10 uF C5 50V 1 uF C10 6 5 7 TLO-72 CCW CW 50K L CONTOUR P1 R6 2.2K R7 10K R5 1K R10 100K 1 2 3 4 5

10、 6 7 8 9 10 11 12 RC1A Value 1 2 3 4 5 6 7 8 9 10 11 12 RC1 Value R4 1K R9 220 50V 1 uF C8 CCW CW 10K L P4 R11 4.7K R8 1K R12 15K C7 100V 0.0047 C I O SW1:A C I O SW1:B C9 200V 56 pF D-GND 50V 2.2 uF C19 C21 100V .22 C20 100V 220 pF 2 1 4 TDA2050 R17 22K R25 4.7 D12 1N4002 C14 200V 56 pF C27 100V .1

11、 uF C13 100V .0022 uF C11 100V .01 uF 2 3 1 TLO-72 CCW CW 50K L P6 HIGH CCW CW 50K L P5 HI MID CCW CW 50K L P3 LO MID R21 22K R22 47K D-GND R14 10K 1 2 3 4 5 6 7 8 ECONO-CON RC2 CCW CW 50K L P7 DSP MODE J10 .187 TAB C12 50V .1 uF 1/4W 5% R16 100K CCW CW 50K L P2 LOWR19 1K R18 1K R20 15K C16 0 C15 0

12、R13 10K C25 50V .1 uF 6 5 7 TLO-72 CCW CW P9 50K L LEVEL R41 100K R44 10K C36 100V 0.01 R38 470 R39 1.5K 1W OC4 VTL-5C7 100V 10 uF C18 D6 1N914 D7 1N914 D3 1N914 D8 1N914 G S D Q1 J175 R37 470 R40 33 R23 1M R15 47K D9 1N914 C17 200V 100 pF CCW CW 10K L P8 TO SWITCH AC VOLTS BLACK BLACK GRAY/WHT BLUE

13、 J9 WHITE AC NEUTRAL BLUE GRAY/WHT BROWN D-GND C28 100V .1 uF 50V 2.2 uF C31 J7 .187 TAB J6 .187 TAB J9 .187 TAB J8 .187 TAB C35 250V UL .0033 23-926-02 FC2 23-926-02 FC1 1 A SB F1 J14 J13 .187 TAB J12 .187 TAB J11 .187 TAB J16 .250 TAB .250 TAB J15 D15 1N5401 D14 1N5401 D17 1N5401 D16 1N5401 D19 1N4744 D18 1N4744 25V 4700 uF C26 25V 4700 uF C32 35V 100 uF C33 35V 100 uF C34 D4 RED R46 100 R45 100 C24 50V .1 uF 1.5K R33 R43 220 R42 220 RadioFans.CN 收音机爱 好者资料库