JCA22H SERVICE MANUAL[1] - Starin

1 MODEL: Revised on Dec 2011 CONTENTS 1. 2. BLOCK 3 SCHEMATIC 4. WIRING EXPLODED VIEW & MECHANICAL PARTS 5. EXPLODED VIEW & MECHANICAL PARTS JCA22H is a guitar power amplifier designed for guitarists rehearsals and concert. Rear panel: AC input adopting wide voltage design controls via voltage switch; speaker enclosure interface features 4 ohms, 8 ohms and 16 ohms at outputs for connecting different loads; External effects: control the switchable channels via the footswitch input Front panel: 1 MIC IN(mono)with EQ(bass, middle and treble controls) for guitar signal Power SW; JCA22H also equipped clean, overdrive channels and the footswitch Specification Power output: 20W/8 Ohms Distortion: 32% Input sensitivity: -45dBV Frequency response: 50Hz~ 5 KHz SNR: -61DB 1. INTRODUCTION--- 1 --- JCA22H BLOCK DIAGRAM2. BLOCK DIAGRAM--- 2 ---HK12443 P-JCA22H_OUT3. SCHEMATIC DIAGRAM--- 3 ------ 4 ------ 5 --- JCA22H WIRING DIAGRAM4.

2 WIRING DIAGRAM--- 6 ---5. EXPLODED VIEW & MECHANICAL PARTS LIST--- 7 ------ 8 ---S/N Part NoDescriptionSpecificationQty1 HK12442 K-PCBP-JCA22H_MAIN-DIP12 HK12443 K-PCBP-JCA22H_OUT-DIP13 ME00304 *f *f T-0664-N74 NC00424 T-wood *f *f 145 NI03489 T-plastic *f *f T-664-D0176 MA08801 ZC-front panel-RSJCA22H JET TF00125 output transformer-RSOT-JC2018 TC00473 constant voltage transformer-RS PT-JC22_100/120/240V_50/60Hz19 MF00039 spring washer-RSij5*ij8* MG00477 T-nut-RS6mm411 MG00599 white screw-RSM5* * NI04105 rubber plug-RSGA-20 f 16*f 27*10 213 NI00171 rubber plug-RS9*f 20*10mm 114 NI05689 plastic *15815 MF00189 washer-RS12*f * ME00303 nut-RS10*f 7* HC00008 AC inlet-RS3515 A TYPE( )118 HD00013 glass tube 250V *20mm CSA/S/UL/VDE219 MG00042 black screw-RSM3*10220 HI00455 power supply SW-RS4P 16A R595 KFIT2FA 121 HI00022 power supply SW-RS4PR13-69A122 NI03205 protection *44* HI00345 sliding SW-RSL21-22A2 10A/250V 124 HB03159 PCB-RSJCA-SW(4*5)_VER100225125 MG00566 black screw-RSM3*10* MG00269 nickel screw-RSM3*6827 MG00846 copper pillar-RSM3*10* 828 ME00016 multicolored nut-RS4mm129 MF00038 spring washer-RSf 4*f 7*1t230 MF00048 star washer-RSf 4*f 8* HD00137 vacuum tube-RSEL84232 HD00063 vacuum tube-RS-ACT12AX7WA533 MH01859 separating hood-RS-ACTTUBE RETAINER2-1(BELTON)

3 2--- 9 ---RankPart NoDescriptionSpecificationInsert LocationPI02475 AMPLIFIERJCA22H_JET CITY_230V_CHINA 0001MG00063 screwM3*12 0002MG00489 screwM3*20 0003MG00511 screw-RSM4* 0004HA00861 power cord Europe 3 PLT-312+LT-501 0005MG00670 SCREW-RSM6*40 0006MF00155 washer-RSij18* * 0007NE12597 lableASHDOWN 0008NA00875 PE *820* 0009NA00858 PE *240* 0010NI05676 label-RS-CT-ABSJC-20 * 0011MD01431 iron net-RS93*389 PH=25* 0012NE19827 label-RSJET CITY 0013NA01048 silk 0014HK12252 faceplateFOOTSWITCH_JET CITY_JCA50H | 0001RA00805 fixed resistor 1/4W68K | 0002SA00379 blue(TY-30BL5TM70-250) | 0003NI00559 bushing5P-4 | 0004NI02952 lamp coverLC3-1 3 LED | 0005MG00025 screw-RSM3*6 | 0006HI00295 foot-switch-RS-C01-690C | 0007HC00038 MIC (metal) | 0008HA01710 MIC wire-RSij6*1C*20 +30 *15FT | 0009ND00619 EV *70*105 | 0010NA00860 PE *280* | 0011NB06512 inner | 0012MA08125 panel-RSJCA-100H JET CIYT | 0013MB04441 chassisABM SINGLE *45*110* 0015NC03051 box-RSJCA20H 23# 0016HK13066 faceplateJCA22H_JET CITY_230V | 0001NI03489 plastic * * T-664-D01 | 0002NI00252 sleeveij4*20mm | 0003NI00267 sleeveij6*18mm | 0004NI00171 rubber stopperij9*ij20*10mm | 0005NI00218 cable tieALT-102SB | 0006NI03205 protective *44* | 0007NC00424 * * red | 0008MF00039 washerij5*ij8* | 0009MF00038 washer-RSij4*ij7*1t | 0010MF00048 washer-RSij4*ij8* | 0011ME00016 color nut4m/m | 0012MH01859 separating shadeTUBE RETAINER2-1(BELTON)

4 | 0013MG00566 screwM3*10* | 0014MG00477 nut6mm | 0015MG00269 screw-RSM3*6 | 0016HI00022 power switch-RS4p black frame red key | 0017HD00009 glass tube 250V *20mm CSA/S/UL/VDE | 0018HD00063 vacuum tube12AX7WA | 0019HC00008 AC socket3515 A TYPE( ) | 0020HA01138 signle terminal wiring CF:W08170 red | 0021HA00587 wire70mm yellow L5R5 | 0022HA00436 wire150mm blue L5R5 | 0023HA03943 signle terminal wiring120mm UL1015 18 AWG | 0024HA03752 wire-RS200mm UL1015 18 AWG blue | 0025HA03751 wire-RS200mm UL1015 18 AWG plam | 0026HA02324 signle terminal wiring160mm UL1015 18 AWG blackEUROPE6. BOM--- 10 ---RankPart NoDescriptionSpecificationInsert Location | 0027HA02382 wire-RS55mm black L5R5 | 0028HA04142 wire100mm UL1015 18 AWG green roll yellow | 0029NI04105 hole stopperGA-20 ij16*ij27*10 black | 0030MG00042 screwM3*10 | 0031HD00137 vacuum tube-RSEL84 | 0032MG00846 iron pillar-RSM3*10* | 0033MF00189 washer-RSij12* * | 0034ME00303 copper nut-RSij10*ij7* | 0035ME00304 copper * * T-0664-N | 0036NI05689 * | 0037TF00125 Output Transformer-RSOT-JC20 | 0038HA05417 wire-RS300mm grey LG5RG5 | 0039HK13508 PC board-RSP-JCA-SW | | 0001HB03159 PCB-RSJCA-SW(1*5)

5 _VER110809 | | 0002HI00345 slide switch-RSL21-22A2 10A/250 VSW1 | | 0003AC00603 lead free soldering barS100 | 0040HI00455 power switch-RS4P 16A R595 KFIT2FA | 0041HK12443 PC board-RSP-JCA22H_OUT-DIP | | 0001AC00603 lead free soldering barS100 | | 0002HC01135 stereo MIC S-6351-4PJ2,J3,J4,J5,J6,J7 | | 0003HB03201 PCB-RSJCA22H_OUT(1*5)_VER100809 | 0042HK12442 PC board-RSP-JCA22H_MAIN-DIP | | 0001RA01606 precise metal-oxide-film resistor-RS 1W 470 R38 | | 0002RA00808 metal-oxide-film resistor R3,R15,R23 | | 0003RA01596 precise metal-oxide-film resistor-RS 1W 100 K R7,R13,R14,R24,R25,R36 | | 0004RA01601 precise metal-oxide-film resistor-RS 1W 10K R33,R40,R49,R50 | | 0005RA01884 precise metal-oxide-film resistor-RS 2W 1%R53 | | 0006RA01605 precise metal-oxide-film resistor-RS 1W 15K R8,R11,R54,R29 | | 0007RA00062 metal-oxide-film resistor RSS P typeR52 | | 0008RA01593 precise metal-oxide-film resistor-RS 1W 1M R1,R5,R9,R10,R18,R27,R37,R39 | | 0009RA01595 precise metal-oxide-film resistor-RS 1W R4,R28,R31,R45,R46 | | 0010RA01886 precise metal-oxide-film resistor-RS 1W 1%R19,R20 | | 0011RA01599 precise metal-oxide-film resistor-RS 1W 220K R6,R21,R43.

6 R44 | | 0012RA01539 metal-oxide-film resistor-RS 3W220K P typeR51 | | 0013RA01882 precise metal-oxide-film resistor-RS 1W 330k 1%R22 | | 0014RA01847 precise metal-oxide-film resistor-RS 1W 39K R16 | | 0015RA01604 precise metal-oxide-film resistor-RS 1W R30,R41 | | 0016RA01883 precise metal-oxide-film resistor-RS 2W 1%R47,R48 | | 0017RA01598 precise metal-oxide-film resistor-RS 1W 470K R12,R17,R34 | | 0018RA01594 precise metal-oxide-film resistor-RS 1W 47K R26,R42 | | 0019RA01881 precise metal-oxide-film resistor-RS 1W 68k 1%R2,R32 | | 0020RA01603 precise metal-oxide-film resistor-RS 1W 82K R35 | | 0021CA00117 ceramic Y5PC5,C10 | | 0022CF00212 metal-oxide-film 10%C2,C4,C19,C23,C9,C11,C15,C16,C17,C24 | | 0023CF00033 metal-film capacitor 10%C21,C22 | | 0024CB00366 electrolytic capacitor-RS10uF/450V ij13*21mmC3,C12,C30 | | 0025CF00046 metal-film capacitor 10%C1,C8,C13,C18 | | 0026CB00326 electrolytic capacitor-RS22000uF/25V 30*35mmC29 | | 0027CB00415 electrolytic capacitor-RS22uF/450V 105 C ij16*25mmC27,C28 | | 0028CB00327 electrolytic capacitor-RS22uF/100V ij8*12mmC25 | | 0029CA00137 ceramic capacitor-RS270PF/500V Y5PC20 | | 0030CA00134 ceramic capacitor-RS470PF/1000V Y5PC6,C7,C14 | | 0031CB00416 electrolytic capacitor-RS47uF/450V 105 C ij18*25mmC26 | | 0032RC00381 potentiometerA1M RV16A-20-15K-A1M-3VR1,VR2,VR3,VR6,VR7--- 11 ---RankPart NoDescriptionSpecificationInsert Location | | 0033RC00502 potentiometerB25K RV16A-20-15K-B25K-3VR4,VR8 | | 0034RC00501 potentiometerB250K RV16A-20-15K-B250K-3VR5 | | 0035RC00591 precise metal-oxide-film resistor-RSB50K T1502N-AI-B503-0H03VR9 | | 0036SA00159 rectifier diode1A/1000V IN4007D1,D2,D3,D4,D5.

7 D7 | | 0037SA00005 bridge rectifier4A/400V RS405D6 | | 0038HC01135 stereo MIC S-6351-4PJ1 | | 0039HC00890 vacuum tube holder-RS9 PIN PCB (GZC9-B)V1,V2,V3,V4,V5,V6,V7 | | 0040RA00157 fixed resistor 1/4W0 JPO1 | | 0041HI00008 relayRY-12W-K 12 VRLY1,RLY2 | | 0042AC00603 lead free soldering barS100 | | 0043HB03200 PCB-RSJCA22H_MAIN_VER100809 | 0043MA08801 panel-RSJCA22H JET | 0044TC00473 transformer-RSPT-JCA22H_100/120/240V_50/ 60Hz | 0045MH01857 separating shadeTUBE SHIELD-1(BELTON) | 0046MG00909 screw-RSM5*12* 0017NF03556 user manual-RSJCA22H JET 0018NE21047 0019NE21046 0020NB06922 carton-RS-CTJCA22H JET 0021NA00270 sponge-RSASHDOWN 140*140* 0022NA00706 silk 12 ---RankPart NoDescriptionSpecificationInsert LocationPI02567 AMPLIFIERJCA22H_JET CITY_120V_CHINA 0001MG00063 screwM3*12 0002MG00489 screwM3*20 0003MG00511 screw-RSM4* 0004HA00841 power cord(America 3P)LT-202+18A*3C(SVT) 6FT+LT-501 0005MG00670 SCREW-RSM6*40 0006MF00155 washer-RSij18* * 0007NA00875 PE *820* 0008NA00858 PE *240* 0009NI05676 label-RS-CT-ABSJC-20 * 0010MD01431 iron net-RS93*389 PH=25* 0011NE19827 label-RSJET CITY 0012NA01048 silk 0013HK12252 faceplateFOOTSWITCH_JET CITY_JCA50H | 0001RA00805 fixed resistor 1/4W68K | 0002SA00379 blue(TY-30BL5TM70-250) | 0003NI00559 bushing5P-4 | 0004NI02952 lamp coverLC3-1 3 LED | 0005MG00025 screw-RSM3*6 | 0006HI00295 foot-switch-RS-C01-690C | 0007HC00038 MIC (metal)

8 | 0008HA01710 MIC wire-RSij6*1C*20 +30 *15FT | 0009ND00619 EV *70*105 | 0010NA00860 PE *280* | 0011NB06512 inner | 0012MA08125 panel-RSJCA-100H JET CIYT | 0013MB04441 chassisABM SINGLE *45*110* 0014NC03051 box-RSJCA20H 23# 0015HK13065 faceplateJCA22H_JET CITY_120V | 0001NI03489 plastic * * T-664-D01 | 0002NI00252 sleeveij4*20mm | 0003NI00267 sleeveij6*18mm | 0004NI00171 rubber stopperij9*ij20*10mm | 0005NI00218 cable tieALT-102SB | 0006NI03205 protective *44* | 0007NC00424 * * red | 0008MF00039 washerij5*ij8* | 0009MF00038 washer-RSij4*ij7*1t | 0010MF00048 washer-RSij4*ij8* | 0011ME00016 color nut4m/m | 0012MH01859 separating shadeTUBE RETAINER2-1(BELTON) | 0013MG00566 screwM3*10* | 0014MG00477 nut6mm | 0015MG00269 screw-RSM3*6 | 0016HI00022 power switch-RS4p black frame red key | 0017HD00063 vacuum tube12AX7WA | 0018HC00008 AC socket3515 A TYPE( ) | 0019HA01138 signle terminal wiring CF.

9 W08170 red | 0020HA00587 wire70mm yellow L5R5 | 0021HA00436 wire150mm blue L5R5 | 0022HA03943 signle terminal wiring120mm UL1015 18 AWG | 0023HA02324 signle terminal wiring160mm UL1015 18 AWG black | 0024HA02382 wire-RS55mm black L5R5 | 0025HA04142 wire100mm UL1015 18 AWG green roll yellow | 0026NI04105 hole stopperGA-20 ij16*ij27*10 black | 0027MG00042 screwM3*10 | 0028HD00137 vacuum tube-RSEL84 | 0029MG00846 iron pillar-RSM3*10* 13 ---RankPart NoDescriptionSpecificationInsert Location | 0030HK12442 PC board-RSP-JCA22H_MAIN-DIP | | 0001RA01606 precise metal-oxide-film resistor-RS 1W 470 R38 | | 0002RA00808 metal-oxide-film resistor R3,R15,R23 | | 0003RA01596 precise metal-oxide-film resistor-RS 1W 100 K R7,R13,R14,R24,R25,R36 | | 0004RA01601 precise metal-oxide-film resistor-RS 1W 10K R33,R40,R49,R50 | | 0005RA01884 precise metal-oxide-film resistor-RS 2W 1%R53 | | 0006RA01605 precise metal-oxide-film resistor-RS 1W 15K R8,R11,R54,R29 | | 0007RA00062 metal-oxide-film resistor RSS P typeR52 | | 0008RA01593 precise metal-oxide-film resistor-RS 1W 1M R1,R5,R9,R10,R18,R27,R37,R39 | | 0009RA01595 precise metal-oxide-film resistor-RS 1W R4,R28,R31,R45,R46 | | 0010RA01886 precise metal-oxide-film resistor-RS 1W 1%R19,R20 | | 0011RA01599 precise metal-oxide-film resistor-RS 1W 220K R6,R21,R43,R44 | | 0012RA01539 metal-oxide-film resistor-RS 3W220K P typeR51 | | 0013RA01882 precise metal-oxide-film resistor-RS 1W 330k 1%R22 | | 0014RA01847 precise metal-oxide-film resistor-RS 1W 39K R16 | | 0015RA01604 precise metal-oxide-film resistor-RS 1W R30,R41 | | 0016RA01883 precise metal-oxide-film resistor-RS 2W 1%R47.

10 R48 | | 0017RA01598 precise metal-oxide-film resistor-RS 1W 470K R12,R17,R34 | | 0018RA01594 precise metal-oxide-film resistor-RS 1W 47K R26,R42 | | 0019RA01881 precise metal-oxide-film resistor-RS 1W 68k 1%R2,R32 | | 0020RA01603 precise metal-oxide-film resistor-RS 1W 82K R35 | | 0021CA00117 ceramic Y5PC5,C10 | | 0022CF00212 metal-oxide-film 10%C2,C4,C19,C23,C9,C11,C15,C16,C17,C24 | | 0023CF00033 metal-film capacitor 10%C21,C22 | | 0024CB00366 electrolytic capacitor-RS10uF/450V ij13*21mmC3,C12,C30 | | 0025CF00046 metal-film capacitor 10%C1,C8,C13,C18 | | 0026CB00326 electrolytic capacitor-RS22000uF/25V 30*35mmC29 | | 0027CB00415 electrolytic capacitor-RS22uF/450V 105 C ij16*25mmC27,C28 | | 0028CB00327 electrolytic capacitor-RS22uF/100V ij8*12mmC25 | | 0029CA00137 ceramic capacitor-RS270PF/500V Y5PC20 | | 0030CA00134 ceramic capacitor-RS470PF/1000V Y5PC6,C7,C14 | | 0031CB00416 electrolytic capacitor-RS47uF/450V 105 C ij18*25mmC26 | | 0032RC00381 potentiometerA1M RV16A-20-15K-A1M-3VR1,VR2,VR3,VR6,VR7 | | 0033RC00502 potentiometerB25K RV16A-20-15K-B25K-3VR4,VR8 | | 0034RC00501 potentiometerB250K RV16A-20-15K-B250K-3VR5 | | 0035RC00591 precise metal-oxide-film resistor-RSB50K T1502N-AI-B503-0H03VR9 | | 0036SA00159 rectifier diode1A/1000V IN4007D1,D2,D3,D4,D5,D7 | | 0037SA00005 bridge rectifier4A/400V RS405D6 | | 0038HC01135 stereo MIC S-6351-4PJ1 | | 0039HC00890 vacuum tube holder-RS9 PIN PCB (GZC9-B)V1,V2,V3,V4,V5,V6,V7 | | 0040RA00157 fi