LabGruppen-FP3400-pwr-sm 维修电路原理图.pdf

《LabGruppen-FP3400-pwr-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《LabGruppen-FP3400-pwr-sm 维修电路原理图.pdf（60页珍藏版）》请在收音机爱好者资料库上搜索。

1、 mPQMM=pbosfb=jkri=s=O iK=_=d=NSI=pbJQPQ=QQ=hrkdp_hI=ptbabk=mW=HQS=PMM=RS=OU=MM=cW=HQS=PMM=RS=OU=VV=K=KK=RadioFans.CN 收音机爱 好者资料库= =p=j=mPQMM=m=N=EUF= fP3400 Functional description for class TD amplifiers.3 Functional description schematics .5 Internal connections.6 Component list.7 Variant specific

2、components.7 Description for variant dependent components.7 Sparepart list for fP3400.8 A20TDH Schematics for A20TDH.2 Board placement for A20TDH.3 Component list for A20TDH-32-2 - rev 02.4 A20TDL Schematics for A20TDL.2 Board placement for A20TDL.3 Component list for A20TDL - rev 02A.4 Variant spec

3、ific components.7 Description for variant dependent components.8 IN2GTD Schematics for IN2GTD .2 Board placement for IN2GTD .3 Component list for IN2GTD - rev 02A.4 Variant specific components.7 Description for variant dependent components.8 LD92 Schematics for LD92 .2 Board placement for LD92.3 Com

4、ponent list for LD92 - rev 01.4 Variant specific components.5 Description for variant dependent components.6 SP80CB Schematics for SP80CB.2 Board placement for SP80CB.3 Component list for SP80CB-2x32-2 - rev 01A.4 SP80FA / SP80FB Functional description for switch mode powersupply SP80FA & SP80FB.2 S

5、chematics for SP80FA & SP80FB.4 Schematics for SP80FA, SP80FB & PIND.5 SP80FA.6 Board placement for SP80FA - rev 04.6 Board placement for SP80FA - rev 06.7 Component list for SP80FA - rev 06.8 Variant specific components for 230V versions - rev 06.9 RadioFans.CN 收音机爱 好者资料库= =p=j=mPQMM=m=O=EUF= = = V

6、ariant specific components for 115V versions - rev 06.10 Description for variant dependent components.11 SP80FB.12 Board placement for SP80FB & PIND.12 Component list for PIND, SP80FB - rev 01A.13 Variant specific components for 230V versions - rev 01A.15 Variant specific components for 115V version

7、s - rev 01A.16 Description for variant dependent components.17 = =p=j=mPQMM=m=P=EUF= = = c=qa= Theory of function The input signal is connected to the balanced amplifier and gain switch U1, U201 on the IN2GTD-board. The signal is then passing the gain control on the front panel, going to amplifier U

8、2 (IN2GTD). The gain in this amplifier can be reduced by opto resistor U5 to prevent clipping in the output amplifier. Limiter Q1, Q2 together with the phase linear lowpassfilter U3, U4 limits the slewrate of the signal going to the output amplifier A20TDL, preventing intermodulation in this amplifi

9、er if signals of too high frequencies are presented on the input terminal. The output amplifier A20TDL works as an ordinary power amplifier with the difference that the collector voltage to the output transistors is supplied from the switch mode amplifier A20TDH. The base voltage of the output trans

10、istors Q26-Q28, Q31-Q33 (A20TDL) is sensed by voltage divider R36-R38 and is then sent to the adjustable limiter U3, U4 on the IN2GTD-board, before it reaches the input of the switch mode amplifier (A20TDH) . Limit level is set by the MLS switches S1 and S2. This limiter is used to limit the maximum

11、 output voltage from the amplifier. These switches also change the sensitivity for the led bars on the front panel. The amplifier U1 (U2) on the A20TDH-board makes sure that the output signal on terminal CP4 (CP8) is a copy of the input signal on terminal CP12, by giving correct control voltage to p

12、ulse width modulator U3. U3 compares this voltage with an 614kHz triangular wave giving a pulse width modulated output signal from Q1 (Q7) which is filtered by L1, C1 (L4, C10). The gain from the base of the output transistors on the A20TDL-board to the output of the A20TDH-board is equal to one. VR

13、1 (VR2) is used to add a DC-offset on the input of U1 (U2) giving +7,5V (CP4) -7,5V (CP8) relative output of the LF-amplifier (CP6A), which is the same as collector-emitter voltage for the output transistors Q26-Q28 and Q31-Q33. Repairing instructions REQUIRED MEASUREMENT EQUIPMENT: -Audio generator

14、 -Dummy load, 16 ohm -AC-voltmeter/THD-meter -2 digital voltmeters -Two channel oscilloscope for audio 1. Without changing any fuses check the power supply +155V, -155V, +16V, -16V and +45V. If these arent OK go to the service manual for the power supply. (The +45V voltage is not regulated and can v

15、ary between 30 and 60V depending on the load of the power supply.) 2. If all fuses are OK, follow the signal from input to output, and repair in normal way. The best way is to place the amplifier on the front handles, loosen the rear panel, and mount it back on distances (delivered with this manual)

16、 to make it possible to measure. 3. If there is a fault in the power amplifier stage do as follows: 3:1 Turn VR1, VR2 (A20TDH) and VR3 (SP80FB) counter clockwise. 3:2 Short-circuit R38 on A20TDL-board. 3:3 Disconnect cables from CP23 and CP24 (A20TDL) (Q26-Q28 and Q31-Q33 collectors). 3:4 Replace br

17、oken fuses. (only for the channel you repair) 3:5 Connect DC-voltmeter (200V) to the positive (negative) rail voltage. 3:6 Connect another DC-voltmeter (20V) to the cable disconnected from CP23 (CP24). 3:7 Turn VR3 (SP80FB) slowly clockwise, and watch the voltmeters. Rail voltage should increase rap

18、idly, collector voltage should read 0. After turning VR3 maximum 30, rail voltage should be 155V. = =p=j=mPQMM=m=Q=EUF= = = a) If the rail voltage is zero or very low, check Q1, D1A, D1B (Q7, D5A, D5B) (shorted) on the A20TDH-board. If Q1 (Q7) is broken, also replace R3 (R16) and D2 (D6). b) If the

19、rail voltage is OK, turn VR1 (VR2) on the A20TDH-board slowly maximum clockwise. Voltage measured on the disconnected collector cable should stop at about 7,5V. c) If OK turn VR1 (VR2) (A20TDH) and TP3 (SP80FB) counter clockwise. 3:8 Repeat from 3:5 for the negative side. 3:9 Reconnect cable to CP23

20、 (Q26-Q28 collector). 3:10 Connect dummy load 16 ohm to output, and connect an oscilloscope (10V/div) across the load. 3:11 Slowly turn VR3 (SP80FB) for 155V (-155V) rail voltage. 3:12 Slowly turn VR1 (VR2) (A20TDH) clockwise and look at the oscilloscope. There should be no DC on the oscilloscope. I

21、f there is DC (1V) repair the positive (negative) output section on the A20TDL-board. 3:13 Turn back VR1 (VR2) (A20TDH) and VR3 (SP80FB), and disconnect the cable from CP23 (Q26-Q28 collector). 3:14 Reconnect cable to CP24 (Q31-Q33 collector) and repeat from 3:11 for the negative side. 3:15 Reconnec

22、t cables to CP23 and CP24. Turn VR3 for 155V rail voltage. Turn VR1 clockwise, no DC on the oscilloscope. Then slowly turn VR2 clockwise. There can be some oscillation with VR2 in middle position, but it will stop at further turning. 3:16 Connect 1kHz sine wave to the input of the amplifier. Adjust

23、gain until there is signal on the output. It should be a 7V PK sine wave with no distortion. 3:17 Disconnect short circuit from R38, and the amplifier will work. = =p=j=mPQMM=m=R=EUF= = = c= =p=j=mPQMM=m=S=EUF= = = f= =p=j=mPQMM=m=T=EUF= = = = - Safety critical component. Should only be replaced wit

24、h the specified type. Position Partnumber Description Comment FAN201 F80 x25-24HS Fan 80 x80 x25mm 24VDC high speed FAN202 F80 x25-24HS Fan 80 x80 x25mm 24VDC high speed K201 3K4FUI9330_LAB Trafo. 3,4KW flyback U93/76/30 I93/28/30 core LAB. Rev01 P1 NL4MP_NEU Connector speakon 4pole NEUTRIK NL4MP P2

25、 CASOC5P270_LAB Cable assembly socket crimp terminal 5pole L270mm LAB. Rev01 P3 SOIDC3P1M_AMP Socket IDC terminal 3pole 1module AMP 640441-3 P101 NL4MP_NEU Connector speakon 4pole NEUTRIK NL4MP P102 CASOC5P270_LAB Cable assembly socket crimp terminal 5pole L270mm LAB. Rev01 P103 SOIDC3P1M_AMP Socket

26、 IDC terminal 3pole 1module AMP 640441-3 P201 Variant dependent, see separate list P201A Variant dependent, see separate list S201 Variant dependent, see separate list S202 Variant dependent, see separate list VR1 VR10KLIN31_TOK Potentiometer 10K LIN 31step TOKOS B103 TP96N08 Y4929 Rev1 VR101 VR10KL

27、IN31_TOK Potentiometer 10K LIN 31step TOKOS B103 TP96N08 Y4929 Rev1 s= Position 230V 115V P201 MLEU3x1.52.5mBLK SJOOW-3xAWG12 P201A - MP5-15P15A125V S201 RK2-0-10A15x21 - S202 - RK1-1-6A15x21 a=Partnumber Description MLEU3x1.52.5mBLK Mains lead EU Plug type CEE7/VII 3x1.5mm2 2.5m Black MP5-15P15A125

28、V Mains plug type 5-15P 15A 125V RK1-1-6A15x21 Switch Rocker Single Pole Double Trough on - on 6A 15x21mm RK2-0-10A15x21 Switch Rocker Double Pole Single Trough on - off 10A 15x21mm SJOOW-3xAWG12 Cable SJOOW 3xAWG12 UL style 817 = =p=j=mPQMM=m=U=EUF= = = p=mPQMM= Completed modules Partnumber Descrip

29、tion A20TDH-32-2 Amplifier high frequency 2kW class TD, variant 32-2 A20TDL-17-2 Amplifier low frequency 2kW class TD, variant 17-2 IN2GTD-2x17-2 2 channel input amplifier and gainswitch class TD, variant 2x17-2 LD92-2x32-2 Led display 9 x led 2 channel, variant 2x32-2 SP80CB-2x17-2 Switch mode powe

30、rsupply 8kW capacitor bank, variant 2x32-2 SP80FA-2x17-2 Switch mode powersupply 8kW flyback board A, variant 2x17-2, 230V SP80FA-2x17-2U Switch mode powersupply 8kW flyback board A, variant 2x17-2U, 115V SP80FB-2x17-2 Switch mode powersupply 8kW flyback board B, variant 2x17-2, 230V SP80FB-2x32-2U

31、Switch mode powersupply 8kW flyback board B, variant 2x17-2U, 115V Mecanical parts - Safety critical component. Should only be replaced with the specified type. Partnumber Description TCA20TDA-PBLK Top / bottom cover FP-FP3400 Front panel SPLA20TDA-A Side panel left SPRA20TDA-A Side panel right RP-F

32、P3400 Rear panel 230V RP-FP3400U Rear panel 115V HDL2HEM5_MEN Handle DCSL1-PBLK Dustfilter clip left DCSR1-PBLK Dustfilter clip right DF139x62x5-20 Dustfilter left DF115x62x5-20 Dustfilter right KNBD18.5_TAI Gain potentiometer knob Screws Partnumber Description MRX3x10SV Machine screw, pan head, phi

33、llips, M3x10, black MFX3x12SV Machine screw, countersunk head, phillips, M3x12, black MFX3x20SV Machine screw, countersunk head, phillips, M3x20, black RTS-HST2.9x9.5SV Self tapping screw, pan head, torx, 2.9x9.5mm, black MC6S4x10FBB-SV Hexagon socket screw, cap head, M4x10 with spring washer, black

34、 LAB_T3x8-SV Top / bottom cover screw, torx, M3x8, black = =p=j=OMqae=m=N=ETF= = = A20TDH Schematics for A20TDH.2 Board placement for A20TDH.3 Component list for A20TDH-32-2 - rev 02.4 = =p=j=OMqae=m=O=ETF= = = p=OMqae= =p=j=OMqae=m=P=ETF= = = _=OMqae= =p=j=OMqae=m=Q=ETF= = = =OMqaeJPOJO=J=MO= - Saf

35、ety critical component. Should only be replaced with the specified type. Position Partnumber Description Comment Side C1 330n250VMMK15 Capacitor polyester 330n 250V MMK 15mm Top C2 330n250VMMK15 Capacitor polyester 330n 250V MMK 15mm Top C3 330n250VMMK15 Capacitor polyester 330n 250V MMK 15mm Top C4

36、 3u3160VMKP27.5 Capacitor polypropylene 3u3 160V MKP 27.5mm May have different value Top C5 1u50VMMK5 Capacitor polyester 1u 50V MMK 5mm Top C6 4n7200VX7R5%5 Capacitor ceramic 4n7 200V X7R 5% 5mm Top C7 470u10V10 x18A Capacitor electrolytic 470u 10V 10 x18mm axial Top C8 100n63VMMK5 Capacitor polyes

37、ter 100n 63V MMK 5mm Top C9 10u50V Capacitor electrolytic 10u 50V 5mm Top C10 330n250VMMK15 Capacitor polyester 330n 250V MMK 15mm Top C11 330n250VMMK15 Capacitor polyester 330n 250V MMK 15mm Top C12 330n250VMMK15 Capacitor polyester 330n 250V MMK 15mm Top C13 3u3160VMKP27.5 Capacitor polypropylene

38、3u3 160V MKP 27.5mm May have different value Top C14 1u50VMMK5 Capacitor polyester 1u 50V MMK 5mm Top C15 4n7200VX7R5%5 Capacitor ceramic 4n7 200V X7R 5% 5mm Top C16 470u10V10 x18A Capacitor electrolytic 470u 10V 10 x18mm axial Top C17 100n63VMMK5 Capacitor polyester 100n 63V MMK 5mm Top C18 10u50V

39、Capacitor electrolytic 10u 50V 5mm Top C19 100n63VMMK5 Capacitor polyester 100n 63V MMK 5mm Top C20 10u50V Capacitor electrolytic 10u 50V 5mm Top C21 100n63VMMK5 Capacitor polyester 100n 63V MMK 5mm Top C22 10u50V Capacitor electrolytic 10u 50V 5mm Top C23 2n2250VMMK5 Capacitor polyester 2n2 250V MM

40、K 5mm Top C24 100p200VNP05%5 Capacitor ceramic 100p 200V NP0 5% 5mm Top C25 39p200VNP05%5 Capacitor ceramic 39p 200V NP0 5% 5mm Top C26 270p100VNP05%5 Capacitor ceramic 270p 100V NP0 5% 5mm Top C27 2n2250VMMK5 Capacitor polyester 2n2 250V MMK 5mm Top C28 100p200VNP05%5 Capacitor ceramic 100p 200V NP

41、0 5% 5mm Top C29 39p200VNP05%5 Capacitor ceramic 39p 200V NP0 5% 5mm Top C30 270p100VNP05%5 Capacitor ceramic 270p 100V NP0 5% 5mm Top C31 68p200VNP05%5 Capacitor ceramic 68p 200V NP0 5% 5mm Top C32 1n200VNP05%5 Capacitor ceramic 1n 200V NP0 5% 5mm Top C33 100n63VMMK5 Capacitor polyester 100n 63V MM

42、K 5mm Top C34 100n63VMMK5 Capacitor polyester 100n 63V MMK 5mm Top C35 100n63VMMK5 Capacitor polyester 100n 63V MMK 5mm Top C36 100n63VMMK5 Capacitor polyester 100n 63V MMK 5mm Top C37 10u50V Capacitor electrolytic 10u 50V 5mm Top C38 1n200VNP05%5 Capacitor ceramic 1n 200V NP0 5% 5mm Top C39 220p200

43、VNP05%5 Capacitor ceramic 220p 200V NP0 5% 5mm Top C40 - Not used Top C40A 2u2100VMMK15 Capacitor polyester 2u2 100V MMK 15mm Top C41 1n200VNP05%5 Capacitor ceramic 1n 200V NP0 5% 5mm Top C42 100n50VY5W5%5 Capacitor ceramic 100n 50V Y5W 5% 5mm Bot. C43 - Not used Top C44 1n5200V_MUR Feed trough capa

44、citor 1n5 200V Murata TF418454E152P Bot. C45 1n5200V_MUR Feed trough capacitor 1n5 200V Murata TF418454E152P Bot. = =p=j=OMqae=m=R=ETF= = = Position Partnumber Description Comment Side C46 1n5200V_MUR Feed trough capacitor 1n5 200V Murata TF418454E152P Bot. C47 1n5200V_MUR Feed trough capacitor 1n5

45、200V Murata TF418454E152P Bot. C48 1n5200V_MUR Feed trough capacitor 1n5 200V Murata TF418454E152P Bot. C49 220p200VNP05%5 Capacitor ceramic 220p 200V NP0 5% 5mm Top C50 220p200VNP05%5 Capacitor ceramic 220p 200V NP0 5% 5mm Top C51 1n200VNP05%5 Capacitor ceramic 1n 200V NP0 5% 5mm Top C52 1n200VNP05

46、%5 Capacitor ceramic 1n 200V NP0 5% 5mm Top C53 470p200VNP05%5 Capacitor ceramic 470p 200V NP0 5% 5mm Top C54 470p200VNP05%5 Capacitor ceramic 470p 200V NP0 5% 5mm Top C55 - Not used Top C56 - Not used Top D1 - Not used Bot. D1A BYW81PI200LY Diode power BYW81PI200 lying Bot. D1B BYW81PI200LY Diode p

47、ower BYW81PI200 lying Bot. D2 BZW06P15B Diode transient voltage suppression BZW06P15B Top D3 5V6.4W2% Diode zener 5V6 .4W 2% Top D4 BYW100-200 Diode power switch BYW100-200 Top D5 - Not used Bot. D5A BYW81PI200LY Diode power BYW81PI200 lying Bot. D5B BYW81PI200LY Diode power BYW81PI200 lying Bot. D6

48、 BZW06P15B Diode transient voltage suppression BZW06P15B Top D7 5V6.4W2% Diode zener 5V6 .4W 2% Top D8 BYW100-200 Diode power switch BYW100-200 Top D9 12V.4W5% Diode zener 12V .4W 5% Top D10 12V.4W5% Diode zener 12V .4W 5% Top D11 12V.4W5% Diode zener 12V .4W 5% Top D12 12V.4W5% Diode zener 12V .4W

49、5% Top D13 18V1.3W5% Diode zener 18V 1.3W 5% Top D14 27V.4W5% Diode zener 27V .4W 5% Top K1 T5WFE20-10-6_LAB Transformer 5W flyback E20-10-6 LHM core LAB.GRUPPEN Rev 01 Top L1 13uHRM14_LAB Inductor 13uH RM14 LAB.GRUPPEN Rev 01 Top L2 u5HD1.18ST_LAB Inductor u5H Lab.gruppen Rev 01 Top L3 u5HD1.18ST_L

50、AB Inductor u5H Lab.gruppen Rev 01 Top L4 13uHRM14_LAB Inductor 13uH RM14 LAB.GRUPPEN Rev 01 Top L5 u5HD1.18ST_LAB Inductor u5H Lab.gruppen Rev 01 Top L6 u5HD1.18ST_LAB Inductor u5H Lab.gruppen Rev 01 Top L7 47uHA6M Inductor 47uH axial 6 modules Top L8 47uHA6M Inductor 47uH axial 6 modules Top L9 47