Dual_Lite_(British) 电路图 维修原理图.pdf

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1、2 X 32F 6.3 VAC filaments 2.2K / 5W8.2K / 2W A 325 VDC B 297 VDC C 268 VDC 315 VAC 315 VAC 4 8 6 V5V4V2V1 455 449 5 V6 5Y3 2 5 VAC V3 4 9 5 D 266 VDC 1K / 2W 5 4 Vox AC-15 Lite plus 18W Lite IIB Drawn By Steve Luckey 02/16/2015 4 SPEAKER A .01uF 150/5W 470K .01uF 470K 100K 8.2K 7 2 3 7 9 3 2 7 9 B 6

2、 8 50uF 8.2K V3 12AX7 V5 EL84 V4 EL84 C 100/3W C 2 3 1 820 47K 470K 470K .022uF .022uF 100K 317 295 10.0 318 194 195 68 0 0 D 2.2K 220K 25F 3 33K V2 EF86 8 9 .1F 6 1 Pins 2 and 7 are grounded 1M VOL 500KA 180pF 100 98 2.0 3 2 1 82050uF 100K V1 12AX7 D 33K 6 7 8 .005uF 470pF Volume 500K-A Tone 500K-A

3、 .005uF 144 1.0 0 Line voltage is 120 VAC 2 1 3 2 AMP SLO BLO POWER LINENEUTRAL GROUND 22F22F .1F .005uF Cut 250KA 1M 67 Transformers donated from Hammond AO-39. Hammond AO-23279-1 from AO-39 Hammond AO-23281-0 from AO-39 500pF .001F .0022F .0047F .01F 6 5 4 3 2 1 C CW CCW 2 Pole 6 Position MBB (sho

4、rting) 6 5 3 2 CW CCW 4 C NOTE! All terminals for half the switch are jumpered together and just used as a tie point for the caps. 1 .022F 收音机爱好者资料库 Ra d i o Fa n s .CN 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 V1 12AX7V2 EF86V3 12AX7V5 EL84 1 2 3 4 5 6 7 8 9 + + 47F 0.

5、1F 0.0047F DC 0.022F 0.022F + + 25F + + 22F 500V + + 22F 500V T S G Cut 250K-A Volume 500K-A Tone 500K-A Volume 500K-A 500p 4 5 6 7 8 1 2 3 V6 5Y3 B Power Ground 0.01F 0.01F + + 50F Brilliance 0.0047F 150 ohm 5 watt 180p Channel Instrument V4 EL84 0.1F B A FUSE 1 2 3 N L G 500p .001 .0022 .0047 .01

6、.022 OT Filaments .0047 Layout by Steve Luckey 收音机爱好者资料库 Ra d i o Fa n s .CN 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 V5 EL84 C + + 22F 500V B Power Ground 0.01F 0.01F + + 50F 150 ohm 5 watt V4 EL84 A Top Cut 250K-A PPIMV Dual 500K-A PPIMV mod 1. Remove two 470K grid resistors. 2. Relocate .0047F cap to

7、pots. 3. Connect PPIMV ground to PA Gnd. 4. Use shielded cable if wires are long. 0.0047F I dont have a Master Volume in this amp, but if I wanted one, this is how I would do it. 收音机爱好者资料库 Ra d i o Fa n s .CN 1 2 3 4 5 6 7 8 9 4 5 6 7 8 1 2 3 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 1/211 1/21 1/21 3/4

8、1 3/41 1/2 Chassis Dimensions 12 X 6” X 2” 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 V1 12AX7V2 EF86V3 12AX7V4 EL84V5 EL84 V6 5Y3 T S G Cut 250K-A Volume 500K-A Tone 500K-A Volume 500K-A 1 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/4 Brilliance 2 5 3/8 3 1/8 1-1/2 1 1/8 1 1/8 INSTRUCTIONS FOR PRINTING

9、 DRILL GUIDE Board size is 3 1/8 X 5 3/8. Print this drill guide FULL SIZE on letter sized paper. Use one template as a drill guide. The other template will be used for installing jumpers. Measure the board length of the printout to verify it is 5 3/8. Attach to blank board using double sided carpet

10、 tape. Use a center punch to put a mark at the cross hairs of each turret, standoff, and hole. Use a 3/32 drill bit to drill all holes. Then enlarge holes as needed for screws and wire pass thru. Turret - drill size is 3/32 Hole for wire pass thru drill size to fit Standoff drill size to fit Dashed

11、lines are underboard jumpers + + 47F 0.1F 0.0047F DC 0.022F 0.022F 5 3/8 + + 25F + + 22F 500V + + 22F 500V B 0.01F 0.01F + + 50F 0.0047F 150 ohm 5 watt 0.1F A 1-1/2 6 8 10 0 2 46 8 10 0 2 46 8 10 0 2 46 8 10 0 2 46 8 10 0 2 4 6 8 10 0 2 46 8 10 0 2 46 8 10 0 2 46 8 10 0 2 46 8 10 0 2 4 VOLUMETONECHANNELVOLUMEBRILLIANCECUTINSTRUMENTPOWER MARSHALL 18W VOLUMETONECHANNELVOLUMEBRILLIANCECUTINSTRUMENTPOWER 1 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/41 1/4 VOX AC-15 MARSHALL 18WVOX AC-15 1-1/2 2 AMP SLOW4 SPEAKERPOWER 1 3/41 1/21 5/81 1/2 FUSE 2 AMP SLOW4 SPEAKERPOWER Cut to fit