Little Mark III CHII_Service_Manual 电路图.pdf

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1、2009 EDITION LITTLE MARK III COMBO HEAD II SERVICE MANUAL RadioFans.CN 收音机爱好者资料库 How to disassemble the LMIII / CHII preamp 1. Remove the six black knobs and the three yellow knobs pulling out as indicated in the picture (red arrow). 2. Remove the nine silver hexagonal nuts using a 10 or 11 mm nut

2、screwdriver. 3. Remove the black hexagonal nut using a 15 mm nut screwdriver (see yellow arrow). 4. Remove the four connectors from the preamp (yellow arrows). 5. Remove the three screws (red arrows). RadioFans.CN 收音机爱好者资料库 How to disassemble the LMIII / CHII poweramp 1. Remove the four connectors

3、(yellow arrows). 2. Cut the two ties (green arrows). 3. Remove the six screws (red arrows). How to disassemble the LMIII / CHII front panel components 1. Remove the two screws with a 2.5 mm hexagonal wrench (red arrows). 2. Remove the four faston connectors (red circle). 3. Press on the top and bott

4、om ends of the power switch (red arrows) to remove it from the panel. RadioFans.CN 收音机爱好者资料库 How to Disassemble the LMIII / CHII rear panel components 1. Remove the four hexagonal nuts using a 15 mm nut screwdriver (green arrows). 2. Using a screwdriver, remove the two screws of the line out jack a

5、nd the two screws of the speaker out speakon combo jack (yellow arrows). 3. Using a screwdriver, remove the four screws of the fan (red arrows). 4. Using a screwdriver, remove the screw of the back panel (red arrow) and remove the 20-pin flat connector (yellow arrow). 5. Remove the ground hexagonal

6、nut (red circle) using a 7 mm nut screw driver. 6. Press on the top and bottom (red arrows) ends of the AC power jack to remove it from the panel. Effects Loop Modification The images below show how the effects loop in your amp can be modified to run in series. The default factory setting is paralle

7、l. PARALLEL CONNECTION REAR PANEL SECTION SERIAL CONNECTION REAR PANEL SECTION LMIII / CHII PREAMP SECTION LMIII / CHII PREAMP SECTION 12345678 A B C D 87654321 D C B A 5 Parsek s.r.l. via Aterno, 30 66020 S. Giovanni Teatino Chieti Italy5 Supply - DA510 18-Dec-200812:40:39 I:PSRKAmplifierDA510Edizi

8、one_ed.BDA510_ed_B.DDB - Supply.Sch Title Size:Number: Date: File: Revision: SheetofTime: A3 1 23 T22 IRFP27N60K 1 23 T23 IRFP27N60K D31 BYV27-200 VCC 1 Rt 2 Ct 3 COM 4 LO 5 Vs 6 HO 7 Vb 8 IC5 IR21531D 3 1 4 2 BR1 800V/5A C39 1000uF/200V C40 1000uF/200V 1 2 CN9 110/220 Vdc C68 1uF/250V 2 1 3 D25 RF2

9、001T2D 2 1 3 D26 RF2001T2D 2 1 3 D24 RF2001T2D R78 270K R76 10 D34 BYV27-200 D39 BYV27-200 C67 10nF/63V C51 1uF/63V C72 330pF R74 18K 2 1 3 D27 RF2001T2D C47 1000uF/100V C48 1000uF/100V R80 47 D32 BYV27-200 R77 10 C69 10uF 35V D21 12V/1W C70 100uF 35V D40 1N4148 Vin 1 GND 2 +15V 3 RG1LM7815CT Vin 2

10、GND 1 -15V 3 RG2 LM7915CT + C64 2200uF + C65 2200uF C57 1uF/63V C58 1uF/63V + C61 100uF/25V + C62 100uF/25V C13 100nF/63V C54 100nF/63V 35V D29 BYV27-200+ C66 100uF 1 J3 1 J8 1 J6 1 J7 C52 1uF/63V C56 1nF/63V F1 1 2 3 4 5 6 7 8 9 10 CN7 + +15V -15V +15V -15V +18V R73 2,7K 12 D1 -15V 1 J9 1 J10 Input

11、 C50 270pF R85 100 C49 270pF R83 100 C71 270pF R86 10 1 1 2 2 3 3 4 4 L1 3.3mH/6A C33 1uF/275Vac_X2 C354.7nF/Y1_X2 C36 4.7nF/Y1_X2 C34 47nF/275Vac_X2 t MV-RT22.5Ohm 1 2 CN5 Rete R69 330K R71 330K +80VDC -80VDC 1 +15V 1 -15V MV-VR1 275L40 INPUT 15 15 8 8 3 3 14 14 13 13 12 12 11 11 10 10 2 2 1 1 7 7

12、6 6 18 18 16 16 17 17 9 9 Shield Tr1 TRANS5_2_1 1 2 CN6 12V +20V +20V Text 12345678 A B C D 87654321 D C B A 1 Parsek s.r.l. via Aterno, 30 66020 S. Giovanni Teatino Chieti Italy2 Ampli Lineare e Protezioni - DA510 18-Dec-200812:40:37 I:PSRKAmplifierDA510Edizione_ed.BDA510_ed_B.DDB - Ampli.Sch Title

13、 Size:Number: Date: File: Revision: SheetofTime: A3 1 23 T1 MMBT5551 1 23 T3 MMBT5401 1 23 T5 MMBT5401 1 23 T2 MMBT5551 1 23 T6MMBT5551 1 23 T13 MMBT5551 1 23 T12 MMBT5401 R6 100 R4 100 R5 100 R7 100 R37 1K R9 4.7K R8 4.7K R12 1K R11 4.7K R10 4.7K R13 1K R39 1K R14 4.7K 12 3 T7 MJE350 12 3 T11 MJE35

14、0 12 3 T8 MJE340 12 3 T10 MJE340 R15 220 R16 220 C3 47pF C5 47pF 1 23 T9 BC846 1 2 3 TRIM1 R17 8.2K R38 15 C4 1uF R18 732 R19 680 R20 680 D4 6.2V D3 6.2V D6 6.2V D5 6.2V TI1 IRFP240 TI2 IRFP240 TI3 IRFP240 TI6 IRFP9240 TI5 IRFP9240 TI4 IRFP9240 R22 220 R23 220 R21 220 R24 220 R25 220 R26 220 R27 0.3

15、3 R28 0.33 R29 0.33 R30 0.33 R31 0.33 R32 0.33 R35 47K R33 820K C80.1u R34 715 C7A 100uF C7B 100uF R36 4.7 C6 47nF/250V R65 15k +12PROT 12 3 T18 BD681 + C32 47uF/35V R681M 1 23 T21 BC856 1 32 T19 2N7002 1 32 T20 2N7002 1 2 CN1 Speaker Out1 1 2 3 45 RL1 RL_OUT_1 +18V D18 MUR120 OUT SourceH SourceL CT

16、LB 11 CTLA 3 RST A 4 RST B 10 THR A 2 THR B 12 TRIGA 6 TRIGB 8 OUT A 5 OUT B 9 DISC A 1 DISC B 13 VCC 14 GND 7 IC3 NE556N R59 100 C19 0.1uF/63V C20 0.1uF/63V C21 0.1uF/63V R70 10K +12PROT +12PROT C22 0.1uF/63V R58 10K R57 10K t MV-RT1 10K R53 1.8K +12PROT D131N4148 D14 1N4148 1 23 T16 BC846 Prot_I S

17、ourceH SourceL INPUT R2 1K C1 1uF C2 180pF R3 47K 12 3 T14 J112 DIS R60 180K R63 220K -15V DISProt_I D7 1N4007 D8 1N4007 C9 33uF C11 33uF C10 47n/250V C12 47n/250V +80VDC -80VDC +15V -15V R62 2.2K 12 D16 R61 2.2K 12 D15 R1 1M 1 2 CN3 1 2 CN4 C7 10uF/35V +12PROT -80Vamp +80Vamp 1 2 3 4 CN-Test CON4 1

18、 12VP R66 150 2W 1 32 T26 2N7002 R55 10K C28 10uF/25V C42 100nF I-I Prot_I R41 10K +12PROT 1 2 5 4 IC10 H1AA1 R43 100 R44 100 R67 180/2W +18V R90 8.2K +C31 100uF/35V 12 3 T25 MJE340 1 2 3 4 CN2 FAN2 R42 47K 3 2 1 84 IC4A NE5532 +15V C73 0.1uF/63V -15VC63 0.1uF/63V R82 220 R40 22K R81 4.7K R46 4.7 +1

19、5V C53 1uF/63V +15VVin 1 GND 2 +12V 3 RG3 LM7812CT I-I RL_Out RL_Out Input 5 6 7 IC4B NE5532 C14 47nF/63V C15 47nF/63V C16 47nF/63V R472.2K R48 2.2k 1 23 T4 MMBT5401 D9 1N4148 D2 1N4148 D10 1N4148 R45 4.7k D11 1N4148 R50 100 R49 3.9K +15V t MV-RT3 10K C17 0.1uF/63V D12 1N4148 R51 47K +12PROT C30 100

20、uF + C29 1uF/35V +12PROT 123456 A B C D 654321 D C B A 2 Parsek s.r.l. via Aterno, 30 66020 S.Giovanni Teatino Chieti ITALY3 Little Mark III 22-Jan-200917:47:04 Sheet2.Sch Title Size:Number: Date: File: Revision: SheetofTime: B R46 47K C32 33p R45 47K C31 47n R61 15K C64 15n R62 15K R48 47K C38 47p

21、R47 47K C35 6.8n R50 47K C42 33n C41 33n R58 2.2kR49 47K R60 15k C37 6.8n C36 6.8n R57 2.2K V1 -V1 R52 47K C34 33p IN-EQL LEVEL5 1 2 3 P3 MID_L 1 2 3 P4 MID_H 1 2 3 P5 LOW 1 2 3 P6 HIGH LEVEL5 C63 3.3n C66 2.2n R51 47K C65 470p R75 68K OUT-POST OUT-POST C33 33p R64 15K C76 22n C72 4.7n R81 100K 1 2

22、3 P9 VPF C77 R78 27K R76 68K R77 27K C71 4.7n R63 15K R72 100 R67 220 C4410n R68 220 R69 47k C43 10n 1 2 3 P8A VLE 4 5 6 P8B VLE R65 220 R70 4.7 R71 4.7 C47 100u C48 100u C49 0.1u C55 0.1u C50 0.1u C57 0.1u V+15 V-15 V1 -V1 C51 0.1u C58 0.1u C52 0.1u C59 0.1u C53 0.1u C60 0.1u C54 0.1u C61 0.1u C69

23、100uF 35V C70 100uF 35V C56 0.1u C62 0.1u R80 1.5K 12 D14 ON V-15 V+15 1 2_8 LEVEL4 1 2_14 1 4_1 R79 100 1 4_7 1 +V1 1 -V1 1 4_8 1 TP5 GND 1 TP6 GND 1 TP3 GND 1 TP4 GND 1 TP1 GND 1 TP2 GND C4510n C39 1uF C6710u C40 1uF 8 9 10 IC2C 12 13 14 IC2D 1 4 2 3 11 IC4A 5 6 7 IC4B 8 9 10 IC4C 123456 A B C D 6

24、54321 D C B A 1 Parsek s.r.l. via Aterno, 30 66020 S.Giovanni Teatino Chieti ITALY3 Little Mark III 22-Jan-200917:47:05 Sheet1.Sch Title Size:Number: Date: File: Revision: SheetofTime: B R6 18K V1 -V1 R2 1M CN1R16 2.2K C5 100p 1 2 3 P147K LOG R7 33K C1 47n C3 100p R35 2.2K R8 22K R15 22K LEVEL1 R9 2

25、2K C4 100p R1 1M R14 22K C8 0.1u 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 CN3 SEND-EFF RETURN S-MIX(+) S-MIX(-) TUNER OUT-POST IN-EQL IN-DIRECT OUT-POST 1 2 3 CN5 C7 4.7u D1 9.1V 1/4W R5 470 D2 9.1V 1/4W R32 56K C12 47p R33 56K R22 22K V1 -V1 R21 33K C10 0.47u RETURN IN-EQL LEVEL3 1 2 CN2

26、IN-EQL R20 18K C24 0,47u C23 0,47u R18 18K Sub R34 100 LEVEL2 R23 22K R36 3.3K SEND-EFF TUNER C9 0.1u R37 10K C11 0.33u R17 4.7K C25 10u D7 D6 D10 LEVEL1 LEVEL3 D5 LEVEL2 R38 10K R43 1.5K C30 0.1u R29 22K V+15 12 D13 LED D12 6.2V 1/4WD9 OUT-POST LEVEL4 1 23 T2 BC846 D11 LEVEL5 1 1_1 1 1_8 1 1_14 1 2

27、_1 1 Tuner 1 Send 1 2_7 1 T1 1 Return 1 Input R19 18K C18 1u D3 12V D4 12V C2 330p C13 47n C14 47n C15 47n R44 330 1 32 T3 2N7002 R4 1M C22 1u D8 C21 1u R3 1M V+15 V+15 R12 100K R13 100K C6 33p R10 100K R11 100K 1 2 3 4 CN4 C16 1u C17 1u 1 4 2 3 11 IC1A 5 6 7 IC1B 8 9 10 IC1C 12 13 14 IC1D 5 6 7 IC2

28、B 1 4 2 3 11 IC2A R28 22K R25 22K R27 22K R30 22K R31 22K R24 22K R26 22K R40 1K R39 1K C27 33p C26 33p 1 2 3 P2 LINE_OUT S-MIX(+) S-MIX(-) C20 1u R41 1M C19 1u R42 1M 1 MIX(+) 1 MIX(-) C28 33uF 63V C29 33uF 63V V1 -V1 3 2 1 84 IC3A TL072 5 6 7 IC3B TL072 123456 A B C D 654321 D C B A 3 Parsek s.r.l

29、. via Aterno, 30 66020 S.Giovanni Teatino Chieti ITALY3 Little Mark III 22-Jan-200917:47:05 Sheet3.Sch Title Size:Number: Date: File: Revision: SheetofTime: B C68 10u C46 10n C73 4.7n R87 8.2K R88 8.2K 12 3 T4J112 -V1 1 2 5 4 IC6 H1AA1 R56 47K R90 820K C78 2.2u R92 820K C79 1u R91 820K R59 2.2K R93

30、120 R86 1K R66 220 R55 47K C81 47p C74 1n C75 1n R89 22k R94 47K R84 10K R95 6.8K R85 10K C82 220p R82 4.7K R74 100 1 2 3 CN6 Bib Mono 1 2 3 CN7 Bib Mono 1 2 3 P7 POT1-S 1 2 3 4 CNP7 MASTER Output 1 5_1 1 5_7 1 5_14 1 5_8 R83 3.3K D15 D16 12 13 14 IC4D V1 -V1 1 4 2 3 11 IC5A 5 6 7 IC5B 8 9 10 IC5C 12 13 14 IC5D OUT-POST OUT-POST 1 2 3 4 5 6 7 8 9 10 CN8 + V+15 V-15 V+22 R54 47K C80 47pF 1 4_14 R53 47K R73 100