Boss_GP-20_Effects_Processor_Service_Manual电路图.pdf

《Boss_GP-20_Effects_Processor_Service_Manual电路图.pdf》由会员分享，可在线阅读，更多相关《Boss_GP-20_Effects_Processor_Service_Manual电路图.pdf（15页珍藏版）》请在收音机爱好者资料库上搜索。

1、GP-20Mar. 2001 1 SERVICE NOTES First Edition Issued by RJA Nominal Input Level INPUT -20 dBu Input Impedance 1 M ohm Nominal Output Level OUTPUT -20 dBu Output Impedance 1 k ohm Recommended Load Impedance 10 k ohm or greater Dynamic Range 108 dB (IHF-A typ.) Controls ON/OFF Pedal MANUAL/MEMORY Pedal

2、 GAIN Knob BASS Knob MIDDLE Knob TREBLE Knob PRESENCE Knob MASTER Knob MODEL Knob SPEAKER CABINET Knob VARIATION Button MEMORY/WRITE Button OUTPUT Select Switch Indicators POWER Indicator(serves also as battery check indicator) ON/OFF Indicator MANUAL Indicator MEMORY Indicator VARIATION Indicator C

3、onnectors INPUT Jack (Normal type) OUTPUT Jack (Normal type) DIGITAL OUT Jack (RCA PIN type) AC Adaptor Jack Power DC 9V: Dry battery (AA type) x 6, AC Adaptor Power Consumption 85 mA (9 V max.) *Expected battery life under continuous use: Carbon: 9 hours Alkaline: 25 hours These figures will vary d

4、epend ing on the actual conditions of use. Dimensions 173 (W) x 158 (D) x 57 (H) mm 6-13/16 (W) x 6-1/4 (D) x 2-1/4 (H) inches Weight 1.1 kg / 2 lbs 7 oz (including batteries) Accessories Owners Manual English (#G6017290) Dry battery (AA type) x 6 (#*) Options AC Adaptor (PSA-series) * 0 dBu = 0.775

5、 Vrms *In the interest of product improvement, the specifica- tions and/or appearance of this unit are subject to change with- out prior notice. SPECIFICATIONS GP-20: Guitar Amp Processor Copyright 2001 ROLAND CORPORATION All rights reserved. No part of this publication may be reproduced in any form

6、 without the written permission of ROLAND CORPORATION. 17059082Printed in Japan A000 (DP) TABLE OF CONTENTS SPECIFICATIONS . LOCATION OF CONTROLS . EXPLODED VIEW . PARTS LIST . TEST MODE . RESTORING THE FACTORY SETTINGS . CIRCUIT BOARD (JACK) . CIRCUIT DIAGRAM (JACK) . CIRCUIT BOARD (PANEL) . CIRCUI

7、T DIAGRAM (PANEL) . Page .1 .2 .3 .6 .7 .11 .12 .13 .14 .15 RadioFans.CN 收音机爱 好者资料库 GP-20Mar. 2001 2 LOCATION OF CONTROLS HEXAGON BUTTON HEAD SCREW M46 (H5029850) Pot. RD901-40-125F-B54-00 (F3279802) Pot. RD901-40-125F-B54-11D (F3279803) VGA KEYTOP S BLACK WITH LENS RD901-40-125F-B54-00 (G247751001)

8、 PEDAL SHAFT (H5029851) LED L-34HDSL (1502928100) PEDAL L (G2187531) PEDAL R (G2187530) CASE (G2017146) GP-20 LED PANEL (G2217720) HEXAGON SOCKET BUTTON HEAD 4M3 (H5029852) PEDAL PLATE (G2357116) LED L-113GDT (F5029126) R-KNOB (G2477122) GP-20 PANEL (G2217716) Pot. RD901-40-125F-B54-06D (F3279804) V

9、GA KEYTOP S WITHOUT LENS (G247751301) Jack HTJ-064-12D (H13449150MF) GP-20 REAR PANEL (G2217718) Jack YKC21-3117 (ORANGE) (01343723) Switch SS037-P2230IH-PE9 (F3159707) BATTERY COVER (G2017621) BOTTOM COVER (G2017148) BOTTOM FOOT (G2357118) LABEL CAUTION (F2539803) GP-20 QUICK MANUAL LABEL (F2539804

10、) Adaptor Jack DJ-0711B-020 (F344940301) Screw PAN P-TITE M38 (40011201) RadioFans.CN 收音机爱 好者资料库 GP-20Mar. 2001 3 EXPLODED VIEW 1 2 5 3 i 4 g h RIGHT SIDE LEFT SIDE 9 6 7 8 Parts No. Part CodePart NameQty 1G2017146CASE1 2G2357111CUSHION R2 3H5029851PEDAL SHAFT2 42215770201PEDAL GUIDE BUSH2 522177109

11、00COIL SPRING2 6G2357116PEDAL PLATE2 7G2357115PEDAL FOOT2 8G2187530PEDAL R1 9G2187531PEDAL L1 10G2017148BOTTOM COVER1 11G2357118BOTTOM FOOT2 12G2017621BATTERY COVER1 13G2017620BATTERY CASE V61 14G2177308BATTERY TERMINAL(+)1 15G2177309BATTERY TERMINAL(-)1 16G2177307BATTERY TERMINAL(+/-)1 17G2257130BA

12、TTERY INSULATING SHEET1 18F2539803LABEL CAUTION1 19F2539804QUICK MANUAL LABEL1 21G2477122R-KNOB8 23G2257131INSULATING SHEET BOTTOM1 24G2217716PANEL1 25G2217718REAR PANEL1 26G2217720LED PANEL1 32G247751301KEYTOP S WITHOUT LENS1 33G247751001KEYTOP S BLACK WITH LENS1 Screws No. Part CodePart NameQty aH

13、5019115SCREW 3x8 PAN HEAD TAPTITE-2 BZC2 bH5019110SCREW 3x6 PAN HEAD TAPTITE-2 FEZC7 cH5029850SCREW M4x6 HEXAGON SOCKET BUTTON HEAD FENI4 d40011923INTERNAL TOOTH WASHER M9.5x12.5x0.5 FENI2 e40016467JACK WASHER M9.2x14x0.5 FENI2 f40123545JACK NUT M9x11x2 NI2 gH5029852SCREW 4M3 HEXAGON SOCKET BUTTON H

14、EAD FEBZC2 hH5039413NYLON WASHER M4.1x7.5x0.5 BLACK2 iH5039414NYLON WASHER M5.1x9.5x0.5 BLACK2 jH5019430SCREW 2.6x5 BINDNG HEAD TAPTITE P FEZC2 kH5039521VR ACCESSORY NUT M78 l40011201SCREW 3x8 PAN TAPTITE P BZC1 mH5029325SCREW 3x6 PAN HEAD TAPTITE-2 BZC5 CAUTION An M2.5 hex wrench is required for as

15、sembly and disassembly. Use caution not to scratch the LED during assembly or disassembly. RadioFans.CN 收音机爱 好者资料库 GP-20Mar. 2001 4 EXPLODED VIEW 33 32 26 24 c k 21 25 23 d b l e f GP-20Mar. 2001 5 EXPLODED VIEW a 11 18 19 m 12 18 19 11 16 j 14 15 17 10 13 * IMPORTANT CAUTION ITEMS Be sure to connec

16、t the battery terminals securely. Use caution not to pinch the battery terminal wires between the bottom cover and the case. Align this part with the edge surface. GP-20Mar. 2001 6 PARTS LIST CASINGQty #G2017620BATTERY CASE V61 #G2017621BATTERY COVER1 #G2017148BOTTOM COVER1 #G2357118BOTTOM FOOT2 #G2

17、017146CASE1 #G2217720LED PANEL1 #G2217716PANEL1 #G2187531PEDAL L1 #G2357116PEDAL PLATE62x532 #G2187530PEDAL R1 #H5029851PEDAL SHAFTM52 #G2217718REAR PANEL1 KNOB, BUTTON #G2477122R-KNOB8 #G247751001KEYTOP S BLACK WITH LENS1 #G247751301KEYTOP S WITHOUT LENS1 SWITCH 01780101SKQKABTACT SWITCHSW1,SW2 on

18、PB2 13129778SKQKAHTACT SWITCHSW3,SW4 on PB2 #F3159707SS037-P223OIH-PE9SWITCHSW5 on JB1 JACK, EXT TERMINAL #F344940301DJ-0711B-020ADAPTOR JACKJK4 on JB1 13449150MFHTJ-064-12DPHONE JACK (STEREO)JK1,JK2 on JB2 01343723YKC21-3117(ORANGE)RCA(PIN) JACKJK3 on JB1 PWB ASSY #75D4130100JACK PWB ASSY(EXG)1 #75

19、D4130200PANEL PWB ASSY1 IC #02455067MN101C427 VER1.00IC (8BIT CPU)IC9 on JB1 01235190TC203C040AF-001(FP)IC (MR2 CHIP)IC7 on JB1 #F5179127TLC320AD77CIC (CODEC)IC5 on JB1 #F5179604CAT24WC02JIC (EEPROM)IC11 on JB1 15189210BA15218F-T2IC (OP AMP)IC3 on JB1 00452301NJM2100MIC (OP AMP)IC1,IC2 on JB2 #02455

20、056S-80930ALMP-DAT-T2IC (RESET)IC13 on JB1 01906156S-8520E33MC-BJS-T2IC (DC-DC REGULATOR)IC12 on JB1 15169569TC74HC4053APIC (ANALOG MULTIPLEXER)IC100 on PB1 15249104TC7S04F(TE85L)IC (CMOS)IC6 on JB1 01785178TC9271FSICIC4 on JB1 TRANSISTOR 153091102SA1312GR(TE85R)TRANSISTORQ7 on JB1 153191082SC3324GR

21、(TE85R)TRANSISTORQ3,Q4 on JB2 153191072SC4116GR(TE85R)TRANSISTORQ10 on JB1 #F51396072SJ278FET TRANSISTORQ12 on JB1 15329103T02SK880GR(TE85R)FET TRANSISTORQ1,Q2,Q5 on JB3 15329521RN1307(TE85R)TRANSISTORQ6,Q8 on JB2 E DIODE 15339119T01SS352(TPH3)SWITCHING DIODED1,D2,D5 on JB3 F5339137SS14 VF=0.45VDIOD

22、ED3,D4 on JB2 15019523RD-5.1EB-3ZENER DIODED6 on JB1 F5029117L-312LRDLEDLED1 on PB1 #F5029126L-113GDTLEDLED2 on PB1 1502928100L-34HDSLLED (RED)LED3-LED5 on PB3 RESISTOR F542936510KFCHIP RESISTOR(1608TYPE)R43 on JB1 #F5429386150K FCHIP RESISTOR(1608TYPE)R36 on JB1 00566867RPC05T 100 JCHIP RESISTOR(16

23、08TYPE)R50,R52 on JB2 00567023RPC05T 101 JCHIP RESISTOR(1608TYPE)R49,R68,R71 on JB3 00567156RPC05T 102 JCHIP RESISTOR(1608TYPE)R7 on JB1 00567289RPC05T 103 JCHIP RESISTOR(1608TYPE)R1,R3,R11,R69,R70 on JB5 00567412RPC05T 104 JCHIP RESISTOR(1608TYPE)R6,R12 on JB2 00567556RPC05T 105 JCHIP RESISTOR(1608

24、TYPE)R2,R4,R5,R31,R34,R47,R60 on JB7 00567290RPC05T 123 JCHIP RESISTOR(1608TYPE)R8,R10,R13-R16,R19,R22,R23,R25-R27, R29,R30,R37-R42,R44 on JB21 00567301RPC05T 153 JCHIP RESISTOR(1608TYPE)R18,R35 on JB2 00567190RPC05T 222 JCHIP RESISTOR(1608TYPE)R62 on JB1 00567334RPC05T 273 JCHIP RESISTOR(1608TYPE)R

25、28 on JB1 00567089RPC05T 331 JCHIP RESISTOR(1608TYPE)R57 on JB3 00567345RPC05T 333 JCHIP RESISTOR(1608TYPE)R17,R20,R32,R48,R58,R61,R66,R67 on JB8 00567112RPC05T 471 JCHIP RESISTOR(1608TYPE)R9,R21,R33,R45 on JB4 00567389RPC05T 563 JCHIP RESISTOR(1608TYPE)R24,R46 on JB2 00567134RPC05T 681 JCHIP RESIST

26、OR(1608TYPE)R53-R56 on JB4 00567001RPC05T 750 JCHIP RESISTOR(1608TYPE)R51 on JB1 POTENTIOMETER #F3279802RD901-40-125F-B54-00DROTARY POT. 50KBVR1-VR6 on PB6 #F3279804RD901-40-125F-B54-06DROTARY POT. 50KB W/6 CLICKS VR8 on PB1 #F3279803RD901-40-125F-B54-11DROTARY POT. 50KB W/11 CLICKSVR7 on PB1 CAPACI

27、TOR 02341489ECPU1C474MA5MYLAR CAPACITOR(SUBMICRON)C1 on JB1 F5367546100/16VCHIP CAPACITORC49,C51,C55,C76,C88 on JB5 F536754210/16VCHIP CAPACITORC4,C8,C10,C14,C15,C23,C29,C32, C39,C43,C44 on JB11 F536750347/6.3VCHIP CAPACITORC34,C36,C66,C70 on JB4 #01674312ECUV1H820JCVCHIP CAPACITOR(1608TYPE) C27 on

28、JB1 #01674112ECUV1H050CCVCHIP CAPACITOR(1608TYPE) C46,C47 on JB2 #F53696011/50VCHIP CAPACITORC2,C3,C16 on JB3 #F5367504100/6.3VCHIP CAPACITORC78 on JB1 13519641DD308-959F104Z50CERAMIC CAPACITORC100 on PB1 01674701ECJ1VF1E104Z 0.1UF/16VKCHIP CAPACITOR(1608TYPE) C11,C22,C24,C28,C30,C31,C33,C35,C37, C3

29、8,C41,C42,C45,C50,C52,C67,C68, C71-C75,C77,C79-C82,C84-C87 on JB31 01674534ECJ1VB1H332KCHIP CAPACITOR(1608TYPE) C5,C9,C60-C64 on JB7 01674478ECJ1VB1H122KCHIP CAPACITOR(1608TYPE) C20 on JB1 01674467ECUV1H102JCVCHIP CAPACITOR(1608TYPE) C7,C18,C25 on JB3 01674390ECUV1H271JCVCHIP CAPACITOR(1608TYPE) C12

30、,C17,C21,C26,C83 on JB5 01674378ECUV1H181JCVCHIP CAPACITOR(1608TYPE) C13 on JB1 01674334ECUV1H101JCVCHIP CAPACITOR(1608TYPE) C6,C19 on JB2 01674212ECUV1H220JCVCHIP CAPACITOR(1608TYPE) C65,C69 on JB2 INDUCTOR, COIL, FILTER #02563478NFM4516P13C204FEMI FILTERL5 on JB1 12449384SBT-0115WEMI FILTERL1 on J

31、B1 F2449210SLF7032T-4R7M1R7-2(4.7UH)SMD COILL2 on JB1 #F2449216SLF7045T-151MR40SMD COILL3 on JB1 CRYSTAL, RESONATOR 02560445CX-16F 33.8688MHZCRYSTALX1 on JB1 F529910849US SMD 8MHZCRYSTALX2 on JB1 CONNECTOR #F343916053015-0210 2P P=2MMCONNECTORCN1 on JB1 #F3439158A2001WV2-10P P=2MMCONNECTORCN20 on JB

32、1 #F3439159A2001WV2-9P P=2MMCONNECTORCN10 on JB1 SAFETY PRECAUTION: The parts marked have safety-related characteristics. Use only listed parts for replacement. CONSIDERATIONS ON PARTS ORDERING When ordering any parts listed in the parts list, please specify the following items in the order sheet. Q

33、TYPART NUMBERDESCRIPTIONMODEL NUMBER Ex.1022575241Sharp keyC-20/50 152247017300Knob (orange)DAC-15D Failure to completely fill the above items with correct number and description will result in delayed or even undelivered replacement. The parts marked # are new (initial parts). JB - JACK PWB ASSY, P

34、B - PANEL PWB ASSY GP-20Mar. 2001 7 WIRING, CABLE #G3477146RIBBON CABLE3P L=40X5X5 MM P=2MMCN30 on MB to CN31 on JB1 #G3487161WIRING 10PL=65MM P=2MMCN21 on PB to CN20 on JB1 #G3487162WIRING 9PL=65MM P=2MMCN11 on PB to CN10 on JB1 #G3487163WIRING BATTERYL=80MM 2P1 TRANSFORMER #02563501PT-10 (2280-T00

35、8)PULSE TRANSTR1 on JB1 SCREWS #H5019430SCREW 2.6x5BINDNG HEAD TAPTITE P FEZC2 #H5019110SCREW 3x6PAN HEAD TAPTITE-2 FEZC7 H5029325SCREW 3x6PAN HEAD TAPTITE-2 BZC5 40011201SCREW 3x8PAN TAPTITE P BZC1 #H5019115SCREW 3x8PAN HEAD TAPTITE-2 BZC2 #H5029850SCREW M4x6HEXAGON SOCKET BUTTON HEAD FENI4 #H50298

36、52SCREW 4M3HEXAGON SOCKET BUTTON HEAD FEBZC2 40123545JACK NUT M9x11x2NI2 H5039521VR ACCESSORY NUT M78 40016467JACK WASHER M9.2x14x0.5FENI2 40011923WASHER M9.1x13INTERNAL TOOTH2 #H5039413NYLON WASHER M4.1x7.5x0.5BLACK2 #H5039414NYLON WASHER M5.1x9.5x0.5BLACK2 PACKING #G2607212PACKING CASE LOWER1 #G26

37、27135PACKING CASE UPPER1 #H2679505POLYETHYLENE BAG220 x340 x0.031 #G2237614REAR PAD1 #G2237613SIDE PAD1 MISCELLANEOUS #G2257130BATTERY INSULATING SHEET1 #G2177308BATTERY TERMINAL(+)1 #G2177307BATTERY TERMINAL(+/-)1 #G2177309BATTERY TERMINAL(-)1 2217710900COIL SPRING2 G2357111CUSHION R2 #G2257131INSU

38、LATING SHEET BOTTOM1 #F2539803LABEL CAUTIONFCC/CE/C-TICK/EMC1 02123845LEAF A2 #G2197126LED GUIDE1 #G2357115PEDAL FOOTM82 2215770201PEDAL GUIDE BUSH215-7022 #F2539804QUICK MANUAL LABEL1 ACCESSORIES (Standard) #G6017292OWNERS MANUALJAPANESE1 #G6017290OWNERS MANUALENGLISH1 #*ALKALINE BATTERY GP15A3 TES

39、T MODE Test items 1. DSP and EEPROM check (and LED check) 2. Version check 3. Residual noise check 4. Switch check 5. Volume check 6. DSP Thru check (and SPEAKER CABINET volume check) 7. DAC check (and SPEAKER CABINET volume check) 8. AFAD Low check (and SPEAKER CABINET volume check) 9. AFAD High ch

40、eck (and SPEAKER CABINET volume check) 10. DAC Lch check (and SPEAKER CABINET volume check) 11. DAC Rch check (and SPEAKER CABINET volume check) 12. Analog switch check 13. Switching noise and shock noise check 14.Battery operation check Required equipment Oscillator Oscilloscope Noise meter 47k ohm

41、 short plug Monitor speaker Entering Test mode Turn all VRs to the far left. Set the rear panel OUTPUT SELECT switch to POWER AMP+SP. While pressing the left pedal (ON/OFF) and right pedal (MANUAL/ MEMORY), connect the +9V DC PLUG to the ADAPTOR JACK. Only the POWER LED will light. Release the left

42、pedal and right pedal. Within four seconds, press the left pedal and then the right pedal. The GP-20 will enter Test mode, and all LEDs will either be lit or blinking. Note: When the GP-20 enters Test mode, it will automatically per- form a DSP and EEPROM check. The state of the LEDs when Test mode

43、begins will depend on the result of this check. For details refer to 1. DSP and EEPROM check, below. Note: It is not possible to enter Test mode unless all volumes are turned to the minimum position. Note: For details on how to skip to a specific test item, refer to Skipping to a specific test item, which follows the details of each test item. Details of each test item 1. DSP and EEPROM check (and LED check) Enter Test mode. When you enter Test mode, the DSP and EEPROM will be checked automatically. Verify that the VARIATION LED is lit. If there are