JBL-PB12-sub-sch 电路图 维修手册.pdf

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1、123456789101112131415 A B C D E F G H I 151413121110987654321 I H G F E D C B A Part No: Date: Drawn: Rev.a MBD-30040901 (PREAMP) 16-Aug-2001 MS/LL 1 Sheet: 1of2 6 5 4 3 2 1 Un-designated Connector NOT USED U1 U2U1 TLO64 U1 R16 NOT USED C9 1k C8 0r C7 0r R15 NOT USED R17 56k2 R14 68k1 R35 137k R13 3

2、3k2 R9 2k7 C5 220pF C3220pF C2 200uF C1 200uF 8 10 9 R27 604r R34 120k R24 604r R2833k2 C19330pF C18330pF R10 10k R11 59k C6 220p R In GND L In R6 R5 R4 R3 100k R8 2k7 C4 220pF Phase Switch SW SPDT LEVEL 5k POT R12 45k3 U2 LM324 U2 C17 150nF C16 100nF R30 10k R26 4k7 R33 12k1 1 3 2 2 3 1 R18 6k8 R20

3、 6k8 U1 U2 C10 100nF C12 100nF C13 100nF C11 100nF R21 0r R19 6k8 R22 6k8 R23 0r LoPass Defeat Sw. SW SPDT 13 12 14 13 14 12 3 2 17 6 5 6 5 7 8 10 9 1 3 2 1 2 3 1 2 3 4 5 6 7 8 9 11 12 10 R1 4k7 R2 4k7 +15V -15V C21 100nF C20 100nF C23 100nF C22 100nF +15V GND GND SIG -15V mute To/From PWRAMP R2533k

4、2 3rd Order Hi-Pass 2nd Order LO-PASS 2nd Order LO-PASS GAIN STAGE RCA CONNECTOR DUAL RCA 1 2 3 REMOTE NOT USED R L B-POST HiLev I/O IN R L OUT C30 NOT USED 2nd Order Hi-Pass To Pin 11 U1/U2 To Pin 14 U1/U2 +15V -15V LO PASS CONTROL 1 20k POT LO PASS CONTROL 2 20k POT LO PASS CONTROL 3 NOT USED LO P

5、ASS CONTROL 4 NOT USED +15V -15V From PwrAmp From PwrAmp 1 2 LED1 1 2 LED 2 MOLEX 2 D50 1N4148 D51 1N4148 D52 1N4148 D53 1N4148 D54 1N4148 D55 1N4148 LEVEL On Harness 2 Clr LED On Harness 2 Clr LED MOLEX 2 1 2 LED HARNESS SOCKETHEADER NOT USED RadioFans.CN 收音机爱 好者资料库 123456789101112131415 A B C D E

6、F G H I 151413121110987654321 I H G F E D C B A Part No: Date: Drawn: Rev.a MBD-30040901 (PWRAMP) 16-Aug-2001 MS/LL 1 Sheet: 2of2 6 5 4 3 2 1 Un-designated Connector NOT USED BR RECT RS604 R40 1k R41 1000k U1 TLO64 C41 1uF D12 1N5242B D14 1N4148 C42 100uF R43 1000k D11 1N4148 U1 TLO64 R44 100k R46 1

7、000k R47 10k Q1 2N5457 R45 470K C40 10uF D6 1N5234B C6 100nF R7B 10k R6 47R D1 1N4744A D2 1N4744A C21 100nF C22 100nF D3 1N5265B R3 8M2 R1A 7k5 C32 22uF U1 TLO64 R34 10k 4 11 C27 3n3F R33 23k7 C26 10nF R32 47k R31 47k U1 TLO64 R22 42K2 R23 187k R26 6k8 R30 10k R29 1k2 R28 1k2 C20 220nF C3 100nF R5 5

8、3k6 L2 8u5H L1 220uH C10 4u7F C11 330nF R15 NOT USED L3 8u5H L4 8u5H R10B 0.1R R10C 0.1R R10A 0.1R Q10 2N5401 R11 1k Q11 2N5401 R13 47k R14 3k3 R12 1k Q12 2N4401 CZ 100nF CW NOT USED V+ V- CMC 3m6H C7A 100nF C7B 100nF R2B 7k5 C1 2200uF C2 2200uF 9 8 10 R8A 10k R8B 10k R1B 7k5 R1C 7k5 R2C 7k5 R2A 7k5

9、 12 13 14 R27 10k 4 11 R7A 10k +15V GND GND SIG -15V mute 2 1 5 6 7 R21 4K7 D7 1N4148 D8 1N4148 R50 2k2 R100 NOT USED 4 11 4 11 To U1 Pin 4 To U1 Pin 11 SHORT CIRCUIT PROTECT SIGNAL LED & AUTO MUTE To/From PREAMP D4 1N4938 R4 33k UVLO +15 -15 R24 NOT USED R25 NOT USED CONNECTOR C24 330nF C25 NOT USE

10、D R7C 10k R9 8M2 1 2 3 AV SW NOT USED +6V V+ V- +15V S/D FR I/P GND -15V O/P MODULE S64 D5 1N4735A R48 4k7 D13 1N4148 R49 4k7 LED1/2 Preamp LED1/2 Preamp R48 & R49 changed to 4k7 SPK 1 QUICK FIT TERMINAL SPK 2 QUICK FIT TERMINAL AC QUICK FIT TERMINAL GND QUICK FIT TERMINAL AC QUICK FIT TERMINAL R ad

11、d 220k L5 8u5H L6 8u5H 1 2 3 V+ LED CX 220nF 400V R42 22k D10 1N5242B On Faceplate SW SPST 5 X 20mm 800mAL To AC To GND To AC 80130 TRANSFORMER IS MOUNTED ON FACEPLATE TRANS. PRI. QUICK FIT TERMINAL QUICK FIT TERMINAL LIVE C add10nF TRX AMXT003F ! ! ! ! ! ! ! ! ! ! 70153 30713 80141 80137 30521 3052

12、1 Power Cord 30535 *ALL SAFETY PRECAUTIONS IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED WITH THE IEC SYMBOL DESIGNATED COMPONENTS IN WHICH SAFTETY CAN BE OF SPECIAL SIGNIFICANCE WHEN REPLACING A COMPONENT IDENTIFIED WITH . IN THE SCHEMATIC DIAGRAM ARE RadioFans.CN 收音机爱 好者资料库