Supro_S-6424 电路图 维修原理图.pdf

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1、Supro S-6424 Drawn by Steve Luckey C C .047 270K.01 470K .01 270K 270K 1 2 3 8 7 6 V2 12AX7 135V 168V 1.2V 35F 250 100/3W SPEAKER (8 OHMS) 3,6 7 9 1,8 7 3,6 9 1,8 V4 6973 V5 6973 A 26.5V 340V 347V 347V Hammond AO-24158-0 from AO-43 (7.1K:8) B 12K 1.7V 3.9K 2.2K 500pF VOL 2 500K-A .005500pF 270K 2.2K

2、 270K 6 7 8 V1 12AX7 C 470K 110V 1.0V 132 645 2.2K 100K .05 TONE 2 500K-L .0033 VOL 1 500K-A .005500pF 270K 1.5K 270K 1 2 3 C 209V 2.3V 2.2K 100K .05 TONE 1 500K-L .0033 35F Z .005 270K Channel Select C&K-7211 ON-ON-ON Input circuit modified to allow either or both channels to be selected. 1K 270K 6

3、 7 8 1 2 3 V3 12AX7 C 98V 2.3V 288V C Z 2.2K .047 500K-L INT 2.2M .022 Footswitch 1M .0047 10VAC RMS 3.6Hz 7.2Hz 2.2K .01.022 .033 500K-L SPEED 1.5M1M 100K 0.7V X Y 15K / 2W A 350v B 340v C 288v 22F 6.3 VAC 5 VAC 320 VAC 320 VAC 6 8 2 4 5 4 V2 4 9 5 V3V4 Line voltage is 120 VAC 5 4 4 9 5 V1 4 9 5 V5

4、 V6 5Y3 2 1 3 POWER LINENEUTRAL GROUND Hammond AO- 24157-1 from AO-43 1K / 2W 10F10F 340V Ground this point to disable oscillator so all V3 voltage readings will be steady. Latest revision date 08/25/2017 Check for latest revision at All voltages measured with Fluke 87V Original used 250 which biase

5、d the tubes at 24 watts. I used 470 to bias at 18 watts. NOTE! Footswitch jack must be isolated. Use Cliff style jack or Switchcraft L12A with two fiber bushings. NOTE! 1M pot with push/pull switch works just fine for INT. 1 Amp SLO BLO tremolo signal to V1 pin 3 tremolo signal from V3 pin 3 收音机爱好者资

6、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 9 234 1 2 3 4 5 6 7 8 9 4 5 6 7 8 1 2 3 + + 33F 50V 125 0.047F 0.01F 0.01F C C C + + 22F 500V OT OT XY X Y Volume 1 500K-A T S G Tone 1 500K-L Volume 2 500K-A Tone 2 500K-L Intensity 500K-L Speed 500K-L 500p

7、 .0033F.0033F 500p 1 3 2 6 4 5 500p T S G Footswitch (isolate from chassis) 0.022F Preamp Ground 0.047F 0.0047F 0.0047F 0.047F 0.047F 0.0047F Z A B + + 10F 500V + + 10F 500V + + 33F 50V Latest revision date 08/25/2017 Check for latest revision at 250 ohm 10 watt FUSE 1 2 3 N L G OT Classictone 40-18

8、062 305-0-305V 150mA Chassis Chassis Power Ground Chassis Safety Ground 1 A SLO Illuminated Power Switch .0047F 630v .022F 630v .01F 630v .033F 630v 收音机爱好者资料库 Ra d i o Fa n s .CN INSTRUCTIONS FOR PRINTING DRILL GUIDE NOTE This drawing contains layers. Turn off any layers that you dont want to print.

9、 Board size is 3 1/8 X 8 1/2. Print this drill guide FULL SIZE on letter sized paper. Measure the board length of the printout to verify it is 8 1/2. Attach to blank board using double sided carpet tape. Use a center punch to put a mark at the cross hairs of each turret, standoff, and hole. Use a 3/

10、32 drill bit to drill all holes. Then enlarge holes as needed for screws and wire pass thru. DRILL GUIDE 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 收音机爱好者资料库 Ra d i o Fa n s .CN INPUTCHANNEL SELECTPOWERVOLUMETO

11、NEVOLUMETONESPEEDINTENSITYFOOTSWITCH CHANNEL 2INSTRUMENT BOTH 2 1 CHANNEL 1 Dual Tone Model S-6424 Pull ON Y X C C .047 270K.01 470K .01 270K 270K 1 2 3 8 7 6 V2 12AX7 130V 170 1.3V 35F 250 100/3W SPEAKER (8 OHMS) 3,6 7 9 1,8 7 3,6 9 1,8 V4 6973 V5 6973 A 23V 350V 350V 350V Hammond AO-24158-0 from AO-43 (7.1K:8) B 12K 2V 3.9K 2.2K 500pF 500K-A 500K-A .1 .1 MV mod MV Mod I dont have this mod in my amp and really dont think its necessary. But I know someone will ask, so this is how I would do it.