krell_kav-300i_sm 电路图.pdf

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1、THE i-I=Arll=l:i IN AUI:III:I ENI:-INEI:I:ilNI KAV-300i Integrated Amplifier Service Manual v99.0 Juhe, 1999 RadioFans.CN 收音机爱 好者资料库 14.Burn-in Procedure Allow unit to sit, turnedon, for 1 day. b)Switch off the unit and let sit for five or ten minutes. Tun unit on. After 2 minutes continue with test

2、 proceddre starting at Step 8c). At Step 8e) readjust the bias for 12mV. Note: The bias should not be readjusted again. Check all the voltages stated in Step 8a). Table of Content Specifications Unit Test Procedure Test Equipment Required Special Instructions Reference Documents Amplifier Test Proce

3、dure (Functional) Amplifier Specification Test Preamplifier Test Procedure (Functional) Preamplifier Specification Test Memory and Mute Control Test Burn-in Procedure 2 3-8 3 3 3 4 5 5 6 7 8 8 Schematic Diagrams and Bill of Materials are separately attached RadioFans.CN 收音机爱 好者资料库 KAV-300i Integrate

4、d Amplifier Specifications Frequency Response 1 Hz-100KHz +0dB,-3dB Signal to Noise Ratio -95dB. A weighted Distortion 1KHz 0.06% THD 20KHz 0.3% THD Gain 36.1 dB Input Impedance 21 Ok Ohms Output Power each channel driven 8 Ohms150W 4 Ohms300W Power Consumption Idle 50W Inputs 1 balanced, 3 single-e

5、nded Outputs 1 pair speaker outputs via five way binding posts 1 single-ended Tape Monitor 1 single-ended Dimensions 19w x 3.7h x 15.5d inches 47.5w x 9.25h x 38.75d centimeters Weight Unit Shipping 25 Ibs., 11.4 kg 33 Ibs., 14.9 kg 12. Carefully reposition the input configuration back to the Jli/$3

6、 position. Power down to STAND-BY, then press POWER. After a slight delay observe that you are out of the processor mode. (See step 1 lg) a)Proceed to perform the volume tracking, input balance, mute and remote tests. Volume Tracking Input Balance Mute Remote Test that each channels ,volume matches.

7、 Balanceis tested in l dB increments. Left Balance button adjusts the right channel and vica-versa. Test that each channels balance works. Press MUTE key to prove functionality. Press Remote keys to prove functionality. Note: The input balance function can only be obtained through the remote control

8、. When performing the input balance test, observe that the volume control will extinguish, the balance LED will illuminate, the center position LED will illuminate and the left and right LEDs will illuminate as you toggle the balance controls. The volume LEDs double as the balance LED indicators. If

9、 no balance operation is being performed after a short time, the balance LED indicators will extinguish and the volume LED indicators will resume. Note: The mute function may be activated through an input select button on the second depression of the switch, then deactivated by the third depression

10、of the switch, or from the remote control. 13.HC705 Memory and Mute Control Test a) b) With a signal passing through the S3 input with the output set for 2V, and the balance control set for 3dB down, switch to STAND-BY, then power back up. Observe that after a slight delay of approximately 3-4 secon

11、ds, a signal will pass and the same settings that were previously set are retained. Press the POWER button to place the unit back to a STAND-BY condition. Disconnect all connections, turn the Variac off and set the dial to the 0 position and then remove the AC cord from the unit. 27 RadioFans.CN 收音机

12、爱 好者资料库 c)Select the $1 input, then press and hold the up arrow button until full volume. Observe a signal passin_g through both channels. Adjust the ATS-1 outputs for 2 Vrms. Check for corresponding LED illumination. 11.Preamplifier Specification Test a) Adjust the preamp outputs for 2 Vrms 1KHz. b

13、) Proceed to measure for the below requirements for both channels: 1KHz THD 0.005%GAIN = 8.7dB +/- 0.2dB 20KHz THD 0.01%NOISE -93dB DCO = 0.000V +/- 0.1V c)Proceed to check $2 leaving its output voltage set per step 8a). c)Make the proper connections between the KAV-300i and the test equipment to pa

14、ss a balanced signal through the left channel amplifier. No Load. d)Turn the Variac and observe the STAND-BY LED illuminate. Press the POWER button and observe the STAND-BY LED extinguish and the POWER LED illuminate. e) Adjust the bias for 12mY, and the dco for 0.000V +/- 20mY for both channels. Se

15、lect the B1 input, then press the up arrow until full volume and observe a smooth signal passing. Check for corresponding LRD illumination. g) Move the proper connections to monitor a smooth sinewave passing out the right channel amplifier. 9.Amplifier Specification Test a) Apply an 8 Ohm load 1KHz

16、and adjust the output for 150 Watts. b) Proceed to measure for the requirements (below) for both channels. c) d) e) THD 20Hz 0.1% THD 1KHz 0.1% THD 20KHz 0.3% THD 50mV OUTPUT 0.25% GAIN = 35.8 dB +/- 0.2dB NOISE -89dB DCO = 0.000V +/- 20mV BIAS = 12mV Check for Stability with and without an 8 Ohm lo

17、ad for both channels using a 0.015uf cap and the 0.1 uf cap. Observe that there is no oscillation. Momentarily connect the 2 Ohm load to unit. The unit should not blow a fuse, or turn off. Proceed to check that the unit clips 185 Watts or better, not below, into an 8 Ohm load for both channels 0.5 T

18、HD. f) Readjust the output for 150 Watts. Note: Turn the ATS-1 or equivalent off. g)Disconnect the amplifier from the outPut/Ioadbank and the balanced input from the unit. 10.Preamplifier Test Procedure (Functional) a) Set the ATS-1 as follows: Select the level function to read in Volts. Select the

19、generators output impedance for 50 Ohm unbalanced configuration. Adjust the generators output for approximately 0.732 Vrms 1 KHz. b)Make the proper single-ended connections to the input and the preamp outputs for both channels. 4 5 THIP- I.RAraiR IN AUralO IN(DHNiERINI: .KAV-300i Integrated Amplifie

20、r Service Manual Schematics and Bill of Materials 2 D! I.1: Component Side Artwork P7 057D58D55054 PIO 052D51 DSO D49 048 047 048 045 044 03 042 D41 I t I I I I I I i 1 I I KAV-;OOi. Faceplote Board 100-087-0; Rev. D Feb. 10, 1997 Copyrijht (.cI 1996 KRELL Induatrlee Pll D53 P5 Pe P4 5 I ower Level

21、Down Level Up Tape Monitor $3 .$2 $1 B1 01oo MP$8599 Power Toggle .,-5 11-7 ,11-10 4.7k 1N914 I 01 1N91# O4. 1N914 ,4,7 t, (:,5 0,1 uF 0.1 uF :2 ,4.7k R3 1Ok ,i IR LED REVISION RECORD COMMENTS lodified output Oarlington Added 0ATI; 12/94 TffLEt Milford! CT 064|0 RemoLe Con(rol TronsmiLLer or RLL Pre

22、amplifiers SIZORAWING NOt C D C A REY: CT, 08-JAN-93ss,l o, 1 D C B 65 White (Neutral) ,l. , RI Voltage IO0 120 2OO 22O 24O 3 Orange Greel Black Yellow Red (12o) (o) (12o) (loo) (o) Jumpers JlO-JS, JlO-JS, J11-J#, J11-J, J12-J3, J11-J, J12-JS, JS-J7 JS-J6 JS-J6 REVISION RECORD COMMENTS Added WAGOs a

23、nd lucJs rlTLE E L=L ,lu,!ries Ulfur, I CT OI4.D, KAV-300i Power Board DRAWN DSG ONAWINI; NO: 100-087-09 I SleET: 1 OF D O B lndul OV .O0-AV)I ap!s luouodLuo3 D C B A 65 Black (Hot) White (Neutral) 3 .? R1 Orange(120) - Green(100) Block(0) White(120) . Ye,o. (lOO) Red(0) Voltage 100 120 2OO 22O 240

24、Jumpers JlO-J5, JlO-JS, J11-J4, J11-J4, J12-J3, J11-J4, J12-J3, JS-J7 J5-J6 JS-J6 J8-J7 J9-J6 LTR A REVISION RECORD COMMENTS Added WAGOe ond luDe DATE: e/7 ELL Industries Milford. CT DD4DO KAV-300i Power Board DSG C100-087-09 D C B A oa 1 O- 6- 9 5srr; 1 or 1 D 02O 5 O7 !MPSW9Z Rvtolon wcord (ELL In

25、dustries KAV-300i Right Phase Combiner lsh. s+, o , Drown By: i Orowing lift R, Ciorvo Rgg Revision Record, - Original Orawlng KAV-300i Right Phase Combiner DrawnR. C|ervaBY: Drawing i: 03/18/94 Shoat l: 3 of 7 Sheet Size D cz, o , /STANDBY 2 +1V Revision Record F E D C B - Original Drawing KAV-300i

26、 Volume Control Sehematic Drown By: Drawing R. Ciervo O,/18/9-!Sheet i: - ot 7 Sub Assembly Sub Assembly Part No i Description 181O8787O1O0 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 !18_1087_8701_00 181087870100 181087870100 181087870100 181087870100

27、181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181087870100 181O8787O100 181087870100 181087870100 181087870101 181087870200 181087870200 181087870200 181087870200 181087870200 1

28、81087870200 181087870200 181087870200 11087870200 181087870200 181O8787020O 181087870200 181087870200 181087870200 181087870200 Face Plate Board CV Face Plate Board CV Face Plate Board CV _Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate

29、Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV #ace Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate

30、Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV Face Plate Board CV !Component No 110000087003 1113010053025 1132004721008 1132004721010 121100100011 121200301012 121200511012 1212201063505 121300475013 1213201015017 1213201085000 121400100014 1217101045005 1

31、251014001000 1310207805022 1411040574010 1411044514010 14i1060148010 Component Description KAV-300i FACEPLATE BD 10 MEG 1/4 WATT 5% 4.7K RES PACK 8 PIN 4.7K RES PACK10 PIN 10 OHM CMF-60-70 DALE 301 OHM CMF 60-70 511 OHM CMF60-70 10 UF 35V TANTALUM 4.75K OHM CMF60-70 10 UF/50 V E CAP RL 1000UF/50V 10

32、K OHM CMF60-70 .1 UF 50V CERAMIC IN4001 DIODE 3 TERM.+FIXED5V REG. SN74HCT574N MC 74 HC 4514 N 8-3 PRIORITY ENCODER 1473400004000 .4.0 MKS ESONATOR 148600080099 148600085099 1510301102042 161404014002 1711500023004 1740110100020 1730510161420 1750102861100 181087870101 185000000005 Face Plate Board

33、CV 1860214400000 Face Plate Wl Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV .Amp Board CV . Amp Board CV Amp Board CV _A. m_p Board CV Amp Board CV Amp Board CV Amp Board CV 1450903004010 110000087001 1i14018701050 1114249001200 121000000010

34、 121100100011 121100475011 121200100012 121200150012 121200374012 121200511012 121200681012 121200750012 121300121013 121300178013 121300249013 MPS 8099 RLRA MPS 8599 RLRA F/PLATE SWITCH 4/40 X 1/4 PHMS JUMPER 10 PIN HEADER SAMTEC 16 PIN DUAL ROW HEADER 28 PIN DiP SOCKET KAV-300i FACEPLATE WI SMALL

35、BLK H.S. 1 1/2 4-40 S.S KEPNUT MICRO CONTROLLER KAV 3001 AMP BD 187 OHM 1/2 WATT 1% 24 OHM W RESISTOR O OHM RESISTOR 10 OHM CMF-60-70 DALE 47.5 OHM CMF60-70 100 OHM CMF60-70 150 OHM CMF60-70 374 OHM CMF60-70 511 OHM CMF60-70 681OHMCMF60-70 750 OHM CMF60-70 1.21 K OHM CMF 60-70 1.78K OHM CMF60-70 2.4

36、9K OHM CMF60-70 L Qty Per 4 2 2 8 6 4 8 1 2 4 4 1 2 2 1, 2 28 28 2 1 1 1 1 5 1 1 1 2 1 2 5 1 1 11 1 2 1 1 2 14 6 1 5 2 Sub Assembly Level t 3 Reference Designators =148 3R49 : 3 3R47 R50 R52 R58-60 3R1 U1 R2 C12 C40-41 C99 C97 R23,199-200 Cll,22,39,58-60 D8-11 U9 Ull U13 U10 X1 Q27 3 3 Q100 3 SW1-8

37、3 3 3 3 3 3 3 3 J1 4 R113-114,R117-118,R161-162,R165-166 R125-126,R173-174 3R202,204 3R129-136,R177-184 3R103-104,R151-152 R1-2,R38-39 R16,R18,R69,R71,R119,R121,R145 R124,R150,R172,R198 R148-149,R196-197 R105-108,146,153-156,194 R199,R200 R167,R169,R193 R4-5,R10-.11 ,R14-15,R53,R55,R63-64,R67,R68 R8

38、-9,R12-13,R61-62,159-160 ,R163-164,R65-66,R111-112,R115-116 R21 ,R24,R74,R77 Sub Assembly Part No 1810878702O0 181087870200 181087870200 181087870200 181087870200 181087870200 181087870200 181087870200 !18108780200 181087870200 181087870200 181087870200 181O8787O2OO 18108787O200 18108787020O Sub Ass

39、embly .LDescription !Amp Board CV Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Board CV Board CV Board CV Board CV Board CV Board CV Board CV Board CV Board CV Board CV Board CV Board CV Board CV Board CV 181087870200 181087870200 181087870200 181087870200 18108787O2OO 1810878702O0 181087

40、870200 181087870200 181087870201 181087870201 181087870201 181087870201 181087870201 181087870201 Component No 121300619013 Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board CV Amp Board WI Amp Board WI Amp Board WI Amp Board Wl Amp .Board WI Amp Bo

41、ard WI Amp Board WI Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board WI Amp Board Wl Amp Board WI Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl Amp Board Wl 121400100014 121400121014 121400150014 1214001

42、62014 121400255014 121500301015 1217101045005 130000395000 130000625000 13O1OOO110O0 1421500973080 148600042000 148600092OO0 1487OO914OOO 148704746018 149000017002 151500345000 153700519000 1652919070610 1680200401051 i Component Description 16.19K OHM CMF60-70 10K OHM CMF60-70 12.1K OHM CMFS0-70 15

43、K OHM CMF60-70 16.2K OHM CMF60-70 25.5K OHM CMF60-70 301K OHM CMF60-70 .1 UF 50V CERAMIC 39 PF 500V S.MICA CAP 62 PF 500V S.MICA CAP .1 UF 100V RAD.CAP. OP97 FP MPSW42 MPS W92 1N 914 DIODE 1N 4746D DIODE 1% CNY17-20PTO ISOLATOR BRD MOUNT FUSE CARRIER TEST POINT FUSE CLIPS BUSSMAN WAGO X5 W/ENDCAP SI

44、LVER MICA SPACER Qty Per 28 2 4 4 6 2 24 4 2 3 6 13 Sub Assembly Level 3 3 3 3 3 3 3 3 3 3 3 3 18040312205093 181087870201KAV300i AMP BRD W.I13 D550003900100 390 UH INDUCTOR24 1100008700004 1114249001200 1213201015017 1213202275004 22 !KAV 300i SPACER BRD 1213203381600 24 OHM 2W RESISTOR 10 U F/50 V

45、 220 UF 50V RADIAL 3300UF/16V 1810878702011213233021006 330UF/100V4 4 1810878702011213268028000 6800 UF/80V RADIAL24 181087870201124000055005.5 OHM 5W 5%24 100 OHM TOP ADJ POT 200 OHM T.A. TRIM POT 181087870201 181087870201 181087870201 18108787O2O1 181087870201 181087870201 i81087870201 18108787020

46、1 087870201 i81087870201 330 PF 500V S.MICA CAP 47 UF 100V ELECT CAP 1292001010046 29 4 129200200004 130003300000 4 4 4 13010047100044 1310301302151 SJ715814 1310303281151 SJ7157 314 148500150030 148500150031 148705408000 29 4 i81087870201 181087870201 181087870201 181087870201 181087870201 18108787

47、0201 149003508000 MJF15030 XSTR MJF 15031 XSTR 5408 DIODE BRIDGE RECTIFIER 4 4 4 15150001203212 AMP 32V FUSE44 1614040140074-40 X 1/4 SHCS 64 1618032140136-32 X 1/4 PLSC64 KFH-632-10 PEM 6PIN SOCKET W/SPACER 169706321000 1730120061621 1730120081521 8PIN SOCKET W/SPACER 16 :fr:4nce Designators R123,R

48、127,R171 ,R175 R20,R25,R73,R78 R6-7,R56-57 R109-110,R157-158 R17,R19,RT0,R72,R120,R122,R168,R170 R3,R40 , C7-8,C27-28,C42,C47 C9-10,C17-18 C55,C61 ,C69-70 C43,C45,C71 ,C73,C75,C85,C87,C89,C97,C98,C99,C100 U1-2 Q3,Q9-11,Q14,Q28,Q32,Q34,Q36- Q7-8,Q 12-13,Q15,Q29-31 ,Q33 D1-3,D6-7,D12-13,D18-19 D39-40

49、U12,U15 F1-2 TP1-6 F3-6 J6 L1-4 R143-144,191-192 C3-4,19-21,32,34,46,C37 TP BOTTOM OF BRD C44,C48 C62-63, C78-79 C49-50,64-67,80-83 C92-95 R137-142,R185-190, R128,R176 R147.,R195 C76-77,C90-91 C72,C74,C86,C88 Q67-69,Q94-96 Q64-66,Q91-93 Q25,Q70,Q72,Q97,Q99, Q26,Q71 ,Q98 D78-79,D92-93 J9 -40,Q43,Q53,Q56,Q58-60,Q73, Q35,Q41-42,Q44,Q54-55,Q57, D24-25,D36-38,D68-69,D74-75 Q77-80,Q83,Q85-87 Q61-63,74-76,81-82,84,88-90 D82-83,D88-89 Sub Assembly iSub Assembly Part NoI Description !181087870201 181087870201 1818787