Dual_Lite_(USA) 电路图 维修原理图.pdf

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1、1M 2-3,5-6 LEFT 2-3,5-4 CENTER 2-1,5-4 RIGHT C&K 7211 (ON-ON-ON) switch. Center position selects both channels. 132 645 Phoenix 10K / 3W10K / 3W 1N4007 BIAS 50K-L 15K BIAS RANGE 220K / 1W +10F 50/50F PlatesScreensPhase InverterPreamp +10F 47KA 423v B 420v C 351v D 319v 50/50F 6.3 VAC 340 VAC 340 VAC

2、 4 8 2 6 7 2 V2 4 9 5 V3V4 Line voltage is 120 VAC 7 2 4 9 5 V1 4 9 5 V5 V6 SS-5R4 2 1 3 2 AMP SLO BLO POWER LINENEUTRAL GROUND Fisher 610 PT # T-686-115A E -50V 100 100 220K 5 VAC (none) Marshall style bias circuit All American Dual Lite Steve Luckey. May, 2019 4H 50mA 220K 150K 3.3K D 7 6 8 .1 220

3、K 120K 22K BASS 1M-A TREBLE 1M-A .001 .01 470pF .0047 270K D 4.7K 270K .1 VOLUME 1M-A 1 2 3 .1 Ampeg Gemini II Preamp 68K V1 12AX7 ULTRA HI 25pF 200 22 222 TREBLE 250KA 250pF .1 .022 100K 68K 1.5K 100K 6.8 6.8K VOLUME 1MA 120pF BRIGHT BASS 250KA 100K .047 1.5K6.8 1 2 3 6 7 8 220K DD Fender AB763 Pre

4、amp V2 12AX7 210 212 1.61.6 C C .001 .1 22K470 1M 1M 47 100K .047 1.5K 220K .047 220K 82K 1.5K R35 820 1 1 470/1W 470/1W 1 2 3 8 7 6 5 8 3 4 8 5 3 4 BA E Fender AB763 Power Amp V3 12AT7 V4 6L6 V5 6L6 Hammond 1760J 4K:4,8,16 SPKR16 8 4 WHT GRN BLK YEL 196 78 191 -41.5 413 415 415 416 200 200 76.4 319

5、319 319319 351 351 420423 -41.5 收音机爱好者资料库 Ra d i o Fa n s .CN Volume 1M-A Volume 1M-A P-CF22707 Same as 125C3A 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 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 Bass 250K-A Treble 250K-A NFB 10K 3W BCD 4 5 6 7 8 1 2 3 470 3W A B C D D C B OT Bias 50K 10K 3W 470 3W

6、 3 1 2 4 6 5 .1F 100v 0.1F 0.1F 0.1F Bass 1M-A Treble 1M-A 0.0047F 0.01uF 120K 22K 270K 0.001F T S G + + 6.8F 250p 0.1F 0.022F + + 6.8F 1M 15K 220K 220K 47 22K 820 100K100K 1M 470 1.5K 3.3K 4.7K 270K 1.5K 1.5K 68K 0.001uF 220K 1.5K 47K 100K 1M 6 7/8 220K 470p 6.3VAC PT pulled from Fisher 610 PT # T-

7、686-115A 120VAC 100 100 1 2 3 220K 3W 68K 150K 2 Watt resistor used ONLY to provide support for ground buss + + 10F 100V + + 10F 100V 0.047F 0.047F 0.047F 220K 1 1 82K 100K 220K 3W 1N4007 VOL 1M-A 25p 470p VOL 1M-A 收音机爱好者资料库 Ra d i o Fa n s .CN INSTRUCTIONS FOR PRINTING DRILL GUIDE Board size is 3 1

8、/8 X 6-7/8. 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 6-7/8. Attach to blank board using double sided carpet tape. Use a center punch to p

9、ut 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 lines are underboard jumpers 6

10、 7/8 10K 3W 1N4007220K 3W BCD 1 1 10K 3W .1F 100v 0.1F 0.1F 0.1F + + 25F 25V 250p 0.1F 0.022F + + 25F 25V 15K 220K 220K 47 22K 820 82K 100K 100K100K 1M 470 1.5K 3.3K 4.7K 270K 0.001uF220K 220K 1.5K 0.047F 0.047F 47K 100K 1M 220K 470p 0.047F 150K + + 10F 100V + + 10F 100V 收音机爱好者资料库 Ra d i o Fa n s .CN