Magnatone_M10A_Restoration 电路图 维修原理图.pdf

收音机爱好者资料库 Ra d i o Fa n s .CN DE 47K 4.7M 470 WW 100K V1-B High Gain Input 220K 2.7K 6 7 8 1 2 3 V1-A Low Gain Input CHANNEL 1 47K 33pF 220K .047 330K 47K 1M Bass 470pF 120K .0047 .0047 1M Treble 470pF 1M Volume 470K .01 68K .022 470K100K 330K 330K .047 47K 100pF 1 2 3 1.5K 470K C Tone Boost Bright Mellow DE 47K 4.7M 470 WW 100K V2-A High Gain Input 120K 1 2 3 6 7 8 V2-B Low Gain Input CHANNEL 2 47K 33pF 220K .047 330K 47K 1M Bass 470pF 120K .0047 .0047 1M Treble 470pF 1M Volume 22M .01 470K .01 68K .022 470K100K 330K 330K .047 47K 100pF 6 7 8 2.7K 270K C Tone Boost Bright Mellow V1 12AX7 or 7025 V2 12AX7 or 7025 STEREO INPUT 22K A 47K B C D F 1 2 3 6 7 8 2.2M 100K 100K .047 .047.0022 47K H 1 2 3 100K 100K .047 .047.0022 270 22K E G 820pF 1M 7 6 8 5K 10W B 1F 450V Reverb Spring Assembly 270K E .047 1 2 3 47K 2.7K Reverb Footswitch 1M Reverb 6 7 8 2.7K15K 270K C To Power Amp 1 2 3 47K 47K B D D I JVibrato Footswitch 6 7 8 270K B 1M Vibrato Intensity 500k Vibrato Speed 220K 820K 3.3M 5% .01.01 .02.068 47K330K330K.047 8.2M1M .0047.0047 V4 12DW7/7247 .1 .1 820pF MAGNATONE ESTEY MUSICAL INSTRUMENT AMPLIFIER MODEL M-10A 66-3121 159 2610 3711 4812 P1-S1 KEY VARISTOR V5 12AU7V6 12AU7 V7 12AX7 T1 LYTIC PS CHASSIS AC POWER FUSE V3A 12AX7 V3B 12AX7 To Power Amp Modified to run both preamps through the effects circuits. Just install a jumper from V3 pin 1 to V3 pin 6. See minor change on Power Amp page also. CONE BOARD WIRE COLOR CHART ARED YELLOW YELLOW BWHITE RED RED CWHITE YELLOW DBLACK EWHITE ORANGE FWHITE GREEN GWHITE GREY HWHITE VIOLET IWHITE BLUE JWHITE BROWN V4 V5 V1V2 V6 V3 V7 V8 V9 V10 S2 S1 7189A 7189A 12AU7 T2 12AX7 12AX7 12AX7 12AU7 12AU7 12AX7 12DW7 7247 MAIN AMPLIFIER CHASSIS 收音机爱好者资料库 Ra d i o Fa n s .CN DE 47K 4.7M 470 WW 100K High Gain Input 220K 2.7K 6 7 8 1 2 3 Low Gain Input CHANNEL 1 47K 33pF 220K .047 330K 47K 1M Bass 470pF 120K .0047 .0047 1M Treble 470pF 1M Volume 470K .01 68K .022 470K100K 330K 330K .047 47K 100pF 1 2 3 1.5K 470K C Tone Boost Bright Mellow DE 47K 4.7M 470 WW 100K High Gain Input 120K 1 2 3 6 7 8 Low Gain Input CHANNEL 2 47K 33pF 220K .047 330K 47K 1M Bass 470pF 120K .0047 .0047 1M Treble 470pF 1M Volume 22M .01 470K .01 68K .022 470K100K 330K 330K .047 47K 100pF 6 7 8 2.7K 270K C Tone Boost Bright Mellow V1 12AX7 V2 12AX7 STEREO INPUT To Power Amp MODEL M-10A PREAMPS To Effects V3A 12AX7 V3B 12AX7 Modified to run both preamps through the effects circuits. Just install a jumper from V3 pin 1 to V3 pin 6. See minor change on Power Amp page also. 256V212V316V 316V256V212V 收音机爱好者资料库 Ra d i o Fa n s .CN 22K A 47K B C D F 1 2 3 6 7 8 2.2M 100K 100K .047 .047.0022 47K H 1 2 3 100K 100K .047 .047.0022 270 22K E G 820pF 1M 7 6 8 5K 10W B 1F 450V Reverb Spring Assembly 270K E .047 1 2 3 47K 2.7K Reverb Footswitch 1M Reverb 6 7 8 2.7K15K 270K C To Power Amp 1 2 3 47K 47K B D D I JVibrato Footswitch 6 7 8 270K B 1M Vibrato Intensity 500k Vibrato Speed 220K 820K 3.3M 5% .01.01 .02.068 47K330K330K.047 8.2M1M .0047.0047 V4 12DW7/7247 .1 .1 820pF MUSICAL INSTRUMENT AMPLIFIER VIBRATO AND REVERB V5 12AU7 V6 12AU7 V7 12AX7 C From CHNL 1 Preamp V3 pin 1 Dry signal path 338V338V 338V 316V 212V316V MODEL M-10A POWER SUPPLY AND POWER AMP OFF STANDBY ON ON ANTIHUM-1 ANTIHUM-1 NOTE: ANTIHUM FEATURE DISCONNECTED 100/1W 270K .047 270K 100K 1K 12 SPEAKER (16 OHMS) 2 1,2 3 7 6,9 3 1,2 7 6,9 V9 V10 1 3 6 7 8 220K 5.6K .012 1M 15K 100K 1K V8 12AU7 7189A CC 1M 7189A -16V S2 P2 1 2 3 1 2 3 EXTERNAL SPEAKER 10K T2 10K:16 .047 F A F NEUTRALLINE GROUND 2 AMP SLO BLO 6.3 VAC 30uF 2K / 10W1.5K / 1W 50uF 10K / 1W 30uF HEATERS 40uF40uF R OR R/V R 9610248731112 N/C 1 100uF + 22K + 12K 96102487311121 10K 1uF BCDE P1 S1 S1B INTERLOCK S1A 5 5 From CHNL 2 Preamp From CHNL 1 Effects A .047 1M 1M BLK (ZIP) BRN BLK (ZIP) BRN BRN BLK BLUE RED RED/YEL RED/BLK RED/WHT Blue Yellow Brown Black Red Modified to run both preamps through the effects circuits. See minor change on Preamp page also. Combined Preamps from Effects 220K 212V256V316V338V410V -16V 410V 316V316V CONE BOARD WIRE COLOR CHART ARED YELLOW YELLOW BWHITE RED RED CWHITE YELLOW DBLACK EWHITE ORANGE FWHITE GREEN GWHITE GREY HWHITE VIOLET IWHITE BLUE JWHITE BROWN 159 2610 3711 4812 P1-S1 KEY VARISTOR MODEL M-10A NOTES AND EXTRAS Pot codes: 304-6532 Mfg is Stackpole Date is 32th week of 1965 AC POWER FUSE T1 LYTIC PS CHASSIS TUBE VOLTAGE CHART V4 V5 V1V2 V6 V3 V7 V8 V9 V10 S2 S1 7189A 7189A 12AU7 T2 12AX7 12AX7 12AX7 12AU7 12AU7 12AX7 12DW7 7247 MAIN AMPLIFIER CHASSIS 123456789 V1 V2 V3 V4 V5 V6 V7 V8 V9 12102HTRHTR7200.9HTR 6500.8HTRHTR84-1.00HTR 7501.2HTRHTR7501.6HTR 2565690HTRHTR104-0.50HTR 2737586HTRHTR2667095HTR 22606.2HTRHTR22606.2HTR 12201.1HTRHTR21102HTR 2414982HTRHTR8504HTR -15.3-15.33.3HTRHTR405404X405 V10-15.3-15.33.3HTRHTR405404X405 Voltages measured with Fluke 87 DMM referenced to chassis. All controls set to max CCW. V4 phase shift oscillator was disabled by shorting out the 820K resistor.