AO-39_conversion 电路图 维修原理图.pdf

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1、Hammond AO-39 conversion to modified Vox AC-15 Lite Drawn By Steve Luckey 09/25/2012 D 4 SPEAKER A .01uF 150/5W 470K .01uF 470K 100K 8.2K 2 2 3 7 9 3 2 7 9 B 1 3 50uF 8.2K V2 12AX7 V3 EL84 V4 EL84 C 140/5W C 7 8 6 82047K 470K 470K .01uF .022uF 100K 303 288 10 305 202 203 40 41 59 0 0 Hammond AO-2328

2、1-0 2 X 32F2 X 32F 6.3 VAC filaments 2.2K / 5W8.2K / 2W A 309 VDC B 288 VDC C 270 VDC 315 VAC 315 VAC 4 8 6 Voltages measured with Fluke 87V DMM. All controls max CCW. Line = 120VAC. V5V4V2V1 455 449 5 V5 5Y3 2 5 VAC V3 4 9 5 LINE VOLTAGE = 120VAC 2 AMP SLO BLO D 268 VDC 250 / 10W1K / 2W Hammond AO-

3、23279-1 1M 2.2K 220K 25F 3 47K V1 EF86 8 9 .1F 6 1 Pins 2 and 7 are grounded 1M 360pF 5.1M 5.1M 5.1M 5.1M 5.1M 500pF .0015F .0022F .0047F .01F VOL 500KA 180pF Cut 250KA .005uF 5 4 123456789 V18602.1htrhtr7302.10 V22024059htrhtr2034159htr V3nu010htrhtrnu303nu288 V4nu010htrhtrnu305nu288 TUBE VOLTAGE C

4、HART 73 86 2.1 5.1M resistors not needed if using a make-before-break switch 收音机爱好者资料库 Ra d i o Fa n s .CN 2 X 32F2 X 32F 4 SPEAKER 6.3 VAC filaments 2.2K / 5W8.2K / 2W A 309 VDC B 288 VDC C 270 VDC 315 VAC 315 VAC 4 8 6 Voltages measured with Fluke 87V DMM. All controls max CCW. Line = 121VAC. Hamm

5、ond AO-39 conversion to MARSHALL 18 WATT Lite Drawn By Steve Luckey 02/27/2011 V5V4V2V1 4455 4499 55 V6 5Y3 2 5 VAC V3 4 9 5 LINE VOLTAGE = 121VAC 2 AMP SLO BLO 3 2 1 82050uF 100K V1 12AX7 D 1M 33K 6 7 8 A .01uF 150/5W 470K .01uF 470K 100K 8.2K 2 2 3 7 9 3 2 7 9 B 1 3 50-500uF 8.2K V3 12AX7 V4 EL84 V5 EL84 C 140/5W C 7 8 6 .005uF 470pF Volume 500K-A Tone 500K-A .005uF82047K 470K 470K .01uF .022uF 100K D 268 VDC 250 / 10W1K / 2W 303 288 10 305 202 203 40 41 59 137 1.0 0 0 0 Hammond AO-23281-0 Hammond AO-23279-1 收音机爱好者资料库 Ra d i o Fa n s .CN 收音机爱好者资料库 Ra d i o Fa n s .CN