Vox_nt15 电路图 维修原理图.pdf

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1、5 5 4 4 3 3 2 2 1 1 EE DD CC BB AA 6V3 AC 6V3 AC 6V3 AC 6V3 AC TAG 9 TAG 10 TAG 2 TAG 14 TAG 13 TAG 11 TAG 12 TAG 8 TAG 7 TAG 6 TAG 3 TAG 1 TAG 5 TAG 4 Title SizeDocument NumberRev Date:Sheetof PCB_NT15H_1001_ISS2C VOX Night Train NT-15 D 11Friday, August 14, 2009 Volume Gain Treble Bass Mid Thick B

2、right 16 Ohms 8 Ohms Speaker Input YEL YEL YEL WHT WHT RED BLU VIO BLK WHT ORG BLU BLK GRN / Y RED YEL GRY YEL WHT WHT VIO VIO ORG ORG Dn Triode Up Pentode C Standby VIO GRY VIO ORG ORG BLK WHT Power MOF 400V400V 400V400V 400V 400V 400V 400V FB1 CW CW CW CW CW CW +226V +46V7 +45V5 B= +177V T= +176V

3、B= +3V15 T= +2V85 B= +1V35 T= +0V B= +0V92 T= +0V75 B= +124V T= +112V +246V+255V+273V+323V +323V+325V 287 VAC 299 VAC 299 VAC 287 VAC 6V14 AC 6 VDC +3V -3V B= +1V97 T= +1V67 +10V3 +330V +330V +321V +321V NOTES; All voltages measured in Pentode Mode AC inlet voltage held constant at 120VAC 60 Hz for

4、measurements No signal applied. Gain and Volume set at Minimum CCW B = Bright mode voltage T= Thick Mode voltage Toggle Pos. 12AX7A12AX7A12AX7A 12AX7A +0V8 +128V Chassis Ring Terminal R24 6K8 12 R3 560 / 1/2W 12 VR 3 250K B 13 2 C30 0.1uF 12 +C18 22 uF / 450V 12 V1 6BQ5/EL84 2 3 4 5 7 9 R37 56K 12 +

5、C11 3300 uF 10V 12 C28 4700 pF 12 R34 1MEG 12 S2 SW 3P3T On Off On 2 1 3 5 4 6 7 9 8 o o o D4 LED 12 R21 10K 12 C24 .01 uF 12 +C7 2.2 uF 50V 12 FS2 FUSE T6.15A 12 C8 .01uF 12 +C23 10 uF / 35V 12 R2 220 / 5W 12 C27 47 pF 12 + C5 220uF 35V 12 C29 250 pF 12 +C14 22 uF / 450V 12 T1 PWR TX DUAL SEC 3 1 2

6、 4 6 7 5 JP1 CON 2 1 2 V4B 2 3 5 1 +C1 22 uF / 450V 12 R38 10K 12 Q2 1N4007 12 C4 .01uF 12 VR1 A 200K A 13 2 R32 56K 12 V3A 7 8 4 6 9 R14 100 / 1/2W 12 X1 UL SL22 12 VR 5 1 MEG B 13 2 R6 3K3 12 +C12 3300 uF 10V 12 R20 1 Meg 12 C16 0.1uF 12 R33 470K 12 J2 12 34 C17 .01uF 12 R7 220 / 5W 12 JP1 CON 2 1

7、 2 C31 .022 uF 12 C22 2200 pF 12 +C6 22 uF / 450V 12 R10 1K5 12 C2 .01uF 12 R27 150K 12 R8 470 / 1W 12 R18 1K5 12 C20 1000 pF 12 +C21 1.0 uF / 50V 12 R13 9K1 / 1W 12 R15 100 / 1/2W 12 R9 220K 12 R35 150K 12 R5 3K3 12 +C13 3300 uF 10V 12 C25 0.1uF 12 R22 27K 12 C26 0.1uF 12 R34 470K 12 C9 100 pF 12 V

8、R 4 20K B 13 2 C19 10 pF 12 R36 1 MEG 12 C32 .022 uF 12 FS3 FUSE T1.25A 12 R16 9K1 / 1W 12 V2 6BQ5/EL84 2 3 4 5 7 9 -+ BR1 W04M 1 2 3 4 J3 12 34 R11 100K 12 T2 OUTPUT TX 5200 OHMS P-P 5 6 1 3 4 2 SM1DPDT Mini Toggle 2 1 3 5 4 6 R25 1K5 12 R7 470 / 1W 12 R4 120 / 5W 12 R31 56K 12 R23 1K5 12 J1 12 34 C15 0.1uF 12 J4 AC FEMALE IEC INLET 12 3 R26 220K 12 C10 0.1 uF 12 VR 2 1 MEG A 13 2 V4A 7 8 4 6 9 FS1 160 mA 12 R1 1K / 2W 12 R36 10 MEG 12 R18 18K / 1W 12 +C3 47 uF / 450V 12 R28 2K7 12 Q1 1N4007 12 VR1 B 200K A 13 2 S3 SW DPST 13 24 V3B 2 3 5 1 R19 1 MEG 12 收音机爱好者资料库 Ra d i o Fa n s .CN