Laney_MXD65,_120_Schematics电路图.pdf

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1、Newlyn Road, Cradley Heath, West Midlands. B64 6B www.laney.co.uk Laney Classic British Amplification MXD120 Service InformationService Information RadioFans.CN 收音机爱 好者资料库 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 DD CC BB AA Title NumberRevisionSize A3 Date:10/10/2003Sheet of File:C:Documents and Settings.93

2、87_6.SchDrawn By: MXD65 / MXD120 PREAMP 93876 119387_6.Sch Rich Thompson MJACK SK1 SJACK SK3 4N7 100V C4 47P 50V C2 10K R1 1M R2 GG G GG TL072 U1A TL072 U1B 22K R4 4K7 R6 G +15v -15V 10N 100V C9 100N 63V C19 100K R19 12 147 CD4069UBE U2A 2N3819 Q2 100K R18 10N 100V C17 G 47K R20 1M R24 34 CD4069UBE

3、U2B 100KA6SD VR5A 100KA6SD VR5B 100N 63V C20 100N 63V C18 22N 100V C22 G 47K R22 1M R25 220K R26 56 CD4069UBE U2C 98 CD4069UBE U2D 1M R23 47P 50V C21 3N3 50V C32 3K3 R36 220N 63V C23 220N 63V C28 100N 63V C31 22KB6S VR9 100KA6S VR7 2K2B6S VR8 G TL072 U3A -15V +15V 10K R35 10K R33 2P2WPS SW2B G 2P2WP

4、S SW2A 10K R34 10K R32 10K R29 15K R30 15K R37 22K R31 100N 63VC25 4N7 100V C27 TL072 U3B GG 47N 100V C24 100KA6S VR6 G 220K R27 220K R3847P 50V C29 TL072 U4A 2N3819 Q3 +15V -15V G 100K R40 100K R39 47P 50V C30 TL072 U4B G Bot Top G PHONOSTV SK2 22K R43 1N4148 D10 1N4148 D9 +15V-15V 1N4148 D8 1N4148

5、 D7 G 100K R8 10K R3 33K R5 3N3 50V C12 10K R9 220N 63V C14 220N 63V C13 100N 63V C10 22KB6S VR4 100KA6S VR2 2K2B6S VR3 G G G 100N 63V C8 1N 100V C5 100KA6S VR1 220K R7 2N3819 Q1 G 1N4148 D3 100N 63V C11 100K R10 100K R14 470K R12 10K R16 1K R13 3V9 ZD0.5W D4 2P2WPS SW1B 2P2WPS SW1A G -15V 2K2 R15 B

6、C307 TS2 BC307 TS1 LED3MMG D5 -15V G G 100N 63V C15 G G G G 22K R46 G 10K R11 -15V 22KB6S VR10 G 100K R41 1 2 3 4 5 6 HD6WL HD3 560R 5W R45 560R 5W R44 15V ZD1.3W D12 15V ZD1.3W D11 47U 50V C36 47U 50V C37 +15V -15V GG GG G 1N4148 D1 1N4148 D2 +15V -15V 2U2 63V C7 150K R21 1K R42 2U2 63V C35 100K R4

7、7 G 270P 250V C6 Input Clean Channel Treble Mid Bass Drive Channel Treble Bass Mid Tape/CD In Max On/Off Master Volume DSP Level TO OUTPUT PCB 9353/9391 FootSwitch Channel Select Drive On G Line Out -15V 4K7 R49 LED3MMR D13 GPower 0R0 LN1 0R0 LN2 +15V 1K R17 5V1 ZD0.5W D6 G 470U 16V C16 G VDD VDD G

8、0R0 LN9 0R0 LN3 0R0 LN5 0R0 LN8 0R0 LN7 100N 63V C3 100N 63V C1 G G 1N 100V C26 NOTE: All capacitors to be rated at 16V or higher NOTE: All resistors to be 1/4W unless otherwise stated 6K8 R28 0R0 LN6 G +5VDSP Programming Header PTA2/IRQ PTA0 PTA4 PTA1 PTA5/OSC 1 2 3 4 5 6 HD2 1 2 3 4 5 6 HD1 PTA3 +

9、15V -15V 1 2 3 4 C 16PGRY SW3 G DSP Program Select FX Return FX Send GND INOUT 7805 U5 G +5VDSP 100N 63V C34 10U 50V C33 FXSEND FXRETURN FXRETURN FXSEND MJACK SK4 G 0R0 LN12 0R0 LN11 0R0 LN10 +15VDSP 1K R50 330R 5W R51 15V ZD1.3W D14 G 10U 50V C38 100K R52 10K R48 G 0R0 LN14 0R0 LN15 0R0 LN16 Hard w

10、ire on top side of pcb AA NOTE: NOTE: MXD65 / R51 = 270R NOTE: MXD120 / R51 = 330R RadioFans.CN 收音机爱 好者资料库 12345678 A B C D 87654321 D C B A Title NumberRevisionSize A3 Date:11-Jun-2003Sheet of File:D:9391_39391_3.DdbDrawn By: MXD120 OUTPUT 93913 119391_3.Sch Rich Thompson BLT Industries G +45V -45V

11、 Extension Loudspeaker FP Flame proof resister Must only be replaced with same type and rating Indicates safety critical component Must only be replaced with approved type C9 4700U 63V C12 4700U 63V AC AC -V +V BR1 6A 200V SP2 SPADE4.8 SP3 SPADE4.8 SP1 SPADE4.8 C15 220N 250V G Mains Switch Mains In

12、Black(Brown) Green/Yellow White (Blue) ChassisTransformer Primary AC Line(Live) AC Input (Neutral) These items not on pcb IEC Inlet Fuse Integral to IEC Fuse MAINS FUSE 230V =T2A, 115V = T5A MAINS TRANSFORMER R3 1K R4 10K C1 2U2 63V C5 100U 25V Gmu Q1 2N3819 Gmu D2 3V9 ZD0.5W D1 3V9 ZD0.5W Gi C2 1N

13、100V Gi Gi TS1 MPSA92 TS3 MPSA92 TS2 MPSA92 TS4 MPSA92 TS5 MPSA42 TS10 MPSA92 R7 220R R9 100R R8 1K R6 100R C3 47U 50V Gi R15 10K C4 100P 100V R5 100K D7 1N4148 D3 1N4148 R10 2K2 TS6 MPSA92 R11 220R TS9 MPSA42 C11 2U2 63V TS7 SAP16N TS11 SAP16P R17 330R R20330R R18 6K8 R196K8 C10100N 63V C13 100N 63

14、V D6 1N4148 D8 1N4148 R22 220R VR2 470RH D9 1N4007 D5 1N4007 G G C16 47N 100V R23 10R 2W5 R24 10R 2W5 L1 COIL20T G +45V -45V C14 100N 63V C8 100N 63V TS8 MPSA42 R12 10K R13 33K C6 1U 63V Gmu Gmu D4 1N4148 Gmu D11 1N4007 D10 1N4007 SK4 MJACKSJ LN3 LN6 TestPoint1 TestPoint2 Set VR5 to give 20mV across

15、 TP1 and TP2 NOTE: Refer to service manual before adjusting bias preset BIAS ADJ LN7 0R0 Gmu VR1 1KH R1 100R R2 100R OFFSET ADJ R16 330R C7 47P 50V LN5 Head Version Only! SK2 MJACKGSJ FX Send FX Return Gi LN8 0R0 LN9 0R0 -45V2 -45V2 R14 0R22 5W R21 0R22 5W LN4 0R0 SP4 SPADE4.8 SP6 SPADE4.8 Internal Loudspeaker R29 0R22 5W G R28 220R R25 10R 2W5 R26 10R 2W5 +40V -40V G G Gi LN10 0R0 HARDWIRED SOCKET Wired Direct to Output PCB 1 2 3 4 5 6 HD1 HD6WL +40V-40V To Preamp PCB G -45V2 RadioFans.CN 收音机爱 好者资料库