American Audio Q 2422PRO Service Manual

SERVICE MANUAL

Q-2422 Pro

MODEL NO.: Q-2422 Pro

Contents

Specification 1-2

Block Diagram 3

Packing View 4

Packing View Part List 5

Point To Point Wiring Diagram 6

Exploded View 7

Exploded View Part List 8-9

Electrical Part List 10-18

Schematic Diagram 19-22

Printed Circuit Board Diagram 23-29

IC Block Diagram 30-34

Trouble Shooting 35

General Specification

1. APPLICATION Model Q-2422PROA/B/C

2. POWER SOURCE AC 115/230V, 50/60Hz, 29Watts

3. DIMENSIONS 482.6(W) x 177(D) x 109.6(H)mm

4. WEIGHT 3.4Kgs

5. FEATURES (1) Level meter for each channel. (2) Power on/off muting. (3) Low Distortion (0.003%), Low noise(S/N=114dB). (4) CD play control by crossfader.

6. INPUT/OUTPUT IMPEDANCE & SENSITIVITY: ( LOAD=100KOHM, MAXIMUM GAIN, EQ FLAT) 6-1. INPUT IMPENDANCE & REFERENCE LEVEL

LINE: 10K OHM /-14dBV (200mV) AUX: 47K OHM /-14dBV (200mV) PHONO: 47K OHM /-54dBV (2mV) MIC1: 2.2K OHM /-54dBV (2mV) MIC2: 2.2K OHM /-60dBV (1mV)

6-2. OUTPUT IMPEDANCE & SENSITIVITY:

MASTER: 600 OHM / 0dBV (1V) +/- 2dB ZONE: 1K OHM / 0dBV (1V) +/- 2dB MASTER XLR: 600 OHM /+2.21dBm (1V) +/-2dB REC: 2.2K OHM /-10dBV (316mV) +/-2dB PHONES (load=32 ohm) 33 OHM / 0dBV (1V) +/-2dB (CUE MIXING AT CENTER)

7. FREQUENCY RESPONSE: (MASTER OUTPUT, EQ FLAT) LINE, AUX: 20 - 20KHz +/- 2dB. PHONO: 20 - 20KHz +2/-3dB (RIAA) MIC: 20 - 20KHz +2/-3dB

8. THD + N: ( MASTER OUTPUT, MAXIMUM GAIN, W/ 20KHz LPF, EQ FLAT) LINE, AUX: LESS THAN 0.02% 20 - 20KHz

NOTE: 0dBV=1V rms.

9. MAXIMUM INPUT: (1KHz, MASTER OUTPUT, THD=10 %, MAXIMUM GAIN, EQ FLAT) LINE, AUX: MORE THAN +4dBV PHONO: MORE THAN -36dBV MIC1: MORE THAN -36dBV MIC2: MORE THAN -42dBV

10. MAXIMUM OUTPUT: (THD=10 %, MAXIMUM GAIN, EQ FLAT)

MASTER, ZONE: MORE THAN +18dBV (8.0V) at load=100K OHM PHONES: MORE THAN +4dBV (1.6V) at load =32 OHM

11. SN RATIO: (MAXIMUM GAIN, W/ 20KHz LPF, A-WEIGHTED, EQ FLAT)

LINE, AUX: MORE THAN 90dBV PHONO: MORE THAN 66dBV MIC1: MORE THAN 64dBV MIC2: MORE THAN 60dBV

General Specification

12. CROSSTALK: (MAXIMUM GAIN, EQ FLAT)

LINE: MORE THAN 60dB AT 1KHz BETWEEN L AND R. MORE THAN 70dB AT 1KHz BETWEEN CHANNELS.

13. EQ

MIC AND CHANNEL: Hi: +12 +/-2dB AT 13KHz

-14 +/-3dB AT 13KHz

MID: +12 +/-2dB AT 1KHz BELOW -23dB AT 1KHz

LOW: +12 +/-2dB AT 70Hz BELOW -23dB AT 70Hz ZONE: Hi: +12 +/-2dB AT 10KHz

-15 +/-3dB AT 10KHz

LOW: +12 +/-2dB AT 100Hz

-22 +/-3dB AT 100Hz

14. MIC TALKOVER -14 +/-2dB

15. FADER KILL:

CHANNEL FADER: MORE THAN 80dB AT 1KHz. CROSSFADER: MORE THAN 70dB AT 1KHz.

16. CHANNEL BALANCE WITHIN 3dB

17. ACCESSORIES

(1) AC power cord 1 pc (2) Operating instruction 1 pc

18. NOTES

(1) The specifications are subject to change to any improvement by negotiations in advance. (2) The parts are subject to change to any improvement within the range of the specifications.

Block Diagram

Packing View

Packing View Part List

REF NO. DESCRIPTION PART NO. Q'TY REMARK

1 POLYFOAM L 506-Q2422-259L 1 2 POLYFOAM R 506-Q2422-259R 1 3 SOFT BAG 509-Q2422-110A 1 4 UNIT Q-2422PROA/B/C 1

I/B ASS’Y 701-2422PROA-3907 1 America

6A AC CORD(L=1900+/-50mm,UL) 409-DJ2-069A 1 6B AC POWER CORD(L=1900+-50mm,VDE TYPE) 409-DJ2-070A 1 6C AC POWER CORD(SAA) 409-DJ2-072A 1 Australia

7 GIFT BOX 507-2422PRO-2164 1

I/B ASS’Y 701-2422PROB-3908 1 Europe I/B ASS’Y 701-2422PROC-4097 Australia

America

Europe

Point to Point Wiring Diagram

CN501

405-2422MK2-1266A OUTPUT PCB

CN502 CN101 CN201

CN01 CN02 CN03

7815 7915

W501

405-2422MK3-1814 MIC PCB

W101

W103 W203 W303

W201

CN301

W301

7805

CN901

W901

CN981

CN03

IC03

IC02

IC01

CN02 CN01

411-2422MK2-354 TRANSFORMER

115 / 230V , 50 / 60 Hz

W02

W01

W502

CN103A CN203A CN303A

405-2422MK3-1939 ADAPTOR PCB

405-2422MK3-1813A

MIXER PCB

CN402

405-2422MK3-1924 FADER PCB

CN03

W401

CN01

405-2422MK3-1815

W03W981W402

AUX PCB

CN01

405-SA12-596 PHONE PCB

Exploded View

Exploded View Part List

Europe

REF NO. DESCRIPTION PART NO. Q'TY REMARK

1 AC JACK ASS'Y

2 PHONE PCB ASS'Y 704-T1-2845 1

3 MIXER/ADAPTOR/LED PCB ASS'Y 704-2422PRO-6793 1 3-1 LED PCB ASS'Y 704-QSPRO-6866 5 3-2 MIXER PCB ASS'Y 704-2422PRO-6791 1 3-3 ADAPTER PCB ASS'Y 704-2422PRO-6792 1 3-4 3-5 PLASTIC SCREW(S-306-N66) 602-SPANDMK2-536 10

4 OUTPUT PCB ASS'Y 704-2422PRO-6794 1

5 MIC PCB ASS'Y 704-2422PRO-6795 1

6 AUX PCB ASS'Y 704-2422PRO-6796 1

7 IC PCB ASS'Y 704-2422PRO-6797 1 7-1 3P SOCKET(B3B-XH-A,P=2.5mm,180DEGREE) 404-HV3500K-623A 1 7-2 IC PCB(BARE,94V0,140*121.5*1.6t) 405-MACH2-1880 1 7-3 IC(NJM-7805FA,TO-220F) 417-KC730-123 1 7-4 IC(NJM-7815FA,TO-220F) 417-DV330-216 1 7-5 IC(NJM-7915FA,TO-220F) 417-RCC955A-291 1 7-6 HEAT SINK 425-QFX-110 1 7-7 ISOLATION(PC,140*16.5*0.3t) 501-M2-1984 1 7-8 7-9 SOCKET 404-HT8015-328 1

7-10 SOCKET 404-HT8015-329 1

8 FADER PCB ASS'Y 704-2422PRO-6798 1

9 POWER KNOB 100-HDJ2000-1641 1

10 KNOB PROTECTOR 100-HDJ2000-1642 1 11 SHEET 100-Q2221-1677 4 12 PUSH KNOB 100-QFX-1736A 6 13 THROW BOARD 100-Q3433-2209 5 14 PROJECTION RING 100-QFX-2430 6 15 PUSH KNOB 100-QFX-2431 6 16 ROTATE KNOB 100-QFXR-2441 6 17 ROTATE KNOB 100-QFXW-2441 19 18 JOG TUNING KNOB 100-QFX-2442 2 19 GROUND PIN 200-DJ100-231 2 20 BRACKET TRANSFORMER 300-DV300B-443 2 21 VR BOARD 300-QFX-695 1 22 FIXED PLATE 300-QMX2BPM-696 1 23 FRONT PANEL(AL) 300-Q2422-709B 1 24 FRONT BOARD 300-Q2422-710C 1 25 BOTTOM BASE 300-Q2422-711E 1 26 POWER SW(SDDLB1017U-HF,2PIN) 403-A100-005 1 27 SLIDE SW(L21-22A8,6PIN) 403-HS100-042 1 28 BNC SOCKET 404-DJ2000B-628 1

SPACER SUPPORT(H-17,WHITE,H=17.1,∮5.5)

SCREW(SAE1018,BTB,∮3*L8)

704-NT2000A-2590 1 America 704-NT2000-2399 1

504-SPANDMK2-156 5

602-HP1010K-175 3

Exploded View Part List

Europe

REF NO. DESCRIPTION PART NO. Q'TY REMARK

29A AC CORD(L=1900+/-50mm,UL) 409-DJ2-069A 1 America 29B AC POWER CORD(L=1900mm+/-50mm,VDE,TYPE) 409-DJ2-070A 1 Europe 29C AC POWER CORD(SAA) 409-DJ2-072A 1 Australia

30 TRANSFORMER(AC115/230V,60/50Hz,EI-48) 411-2422MK2-354 1 31 AC SAFETY CAPACITOR(0.01uF/250V,M,BULK,Y5V) 413-S250-747 1 32 RCA ADAPTOR PLUG(A028) 420-Q3433-106 4 33 LABEL(BARE,36*8mm,t=1.2mm) 501-DV300-1067 0

34 FUSE LABEL(46*6mm,t=0.08mm)

35 PROTECTIVE SHEET 501-QMX2BPM-1374 1 36 SPACER SUPPORT(SCB-5.5,WHITE,H=5.5) 504-HDJ2000-087 3 37 CNR COVER(HU-12-ULY) 504-CDC2050-105 1 38 39 40 HIMILON 612-HDJ100-045 2 41 PROTECTIONMAT 612-HMD5000-065 4 42 FOOT 612-DCM370-067 4 43 44 45 SCREW(3*5 P=0.5) 602-B300-041 11 46 SCREW(SAE1018,PTP,M3*10) 602-MK7-131 11 47 48 49 50 SCREW(ISO,4*8*P0.7) 602-HT8023K-209 2 51 52 SCREW(SAE1018,ISOP,M3*5L*P0.5) 602-MP3-324 2 53

WASHER(∮8*3.2*1t,NI) SPRING WASHER(∮7*4.3*1t)

CUSHION(∮20*9.2*0.3t) CUSHION(∮28*4.8*0.5t)

SCREW(SAE1018,WJMP,∮2.6*L4*P0.45,CAP∮6.5) SCREW(SAE1018,BTF,∮3*L8) SCREW(SAE1018,ISOB,∮3*L8*P0.5)

SCREW(SAE1018,BTB,∮3*L5)

SCREW(SAE1018,STB,∮3*L7*P0.5)

501-DJ2500-1298 1 America 501-DJ2500-1298A 1

606-Q2221-122 2 606-STR830-141 2

612-Q2422-101 28 612-Q2422-102 4

602-MK7-134 2 602-KMD510-161 8 602-HP1010K-178 4

602-QMX2BPM-322 18

602-STB3007-619 2

Mixer & Adaptor & Led PCB Ass'y Part List

REF NO. DESCRIPTION PART NO. Q'TY REMARK

MIXER/ADAPTER/LED PCB ASS'Y 704-2422PRO-6793 1 SPACER SUPPORT 504-SPANDMK2-156 5 PLASTIC SCREW(S-306-N66) 602-SPANDMK2-536 10 MIXER PCB ASS'Y 704-2422PRO-6791 1

SW401,SW402 ROTARY SW(SR2512F-0204-19K0A-C9-S-097) 403-2422MK3-296 2

SW103,SW203,SW303,SW4 03,SW981,SW982

SW102,SW202 LEVER SW(LBC22B-20KB,6PIN) 403-CDMIX1-114B 2 SW501,SW302 LEVER SW(LBC23M-20K,8PIN) 403-CDMIX1-115B 2 W03 W502 W981 W103,W203 3P 2.5 CONNECTOR WIRE(UL2468#26*3C L=65mm) 404-2422MK3-2508 2 W303 2P 2.5 CONNECTOR WIRE(UL2468#26*2C L=65mm) 404-2422MK3-2509 1 W01 W402 W401 W901 W101,W201 W301 W02 CN02 TO CN02A 6P WIRE(P=2.5,L=160mm,AWM2468,AWG26) 406-Q2422MK2-753 2

PUSH SW(SPEA12MC05-HF) 403-AK4-196 6

8P 2.5 CONNECTOR WIRE(L=150mm,AWM2877,AWG26)

3P 2.5 CONNECTOR WIRE(L=220mm,AWM2468#26*3C)

6P 2.5 CONNECTOR WIRE(L=270mm,AWM2468,AWG26,WHI/BLA*5,+/+)

3P 2.0 CONNECTOR WIRE(UL2547#28*2C TS GREY,L=320mm)

5P-7P2.5 CONNECTOR WIRE(L=75mm,AWM2877 AWG26)

3P2.5 CONNECTOR WIRE(L=100mm,AWM1007 AWG26)

9P2.5 CONNECTOR WIRE(L=200mm,AWM2877 AWG26)

6P2.5 CONNECTOR WIRE(L=140mm,AWM2877 AWG26)

6P2.5 CONNECTOR WIRE(L=160mm,AWM2877 AWG26)

6P2.5 CONNECTOR WIRE(L=200mm,AWM2877 AWG26)

404-2422MK2-1831 1 404-2422MK3-2454 1 404-2422MK3-2491 1

404-2422MK3-2510 1 404-HPM6-1640 1 404-HPM6-1681 1 404-QFX19-1667 1 404-SA12-1404 2 404-SA12-1406 1 404-T2-1693 1

D111,D211,D311,D111A,D2 11A,D311A

LED (6224-10ID-A,RED ) 410-CD6000-122 6

D401,D401A LED ( GREEN ) 410-CD6000-124 2 LED981,LED982 INFRARED EMITTONG MODULE( LTE-302-M ) 410-CDMIX1-147 2

D901,D901A,D902,D902A

LED ( LTL-16KA ) 410-HDJ2650-163 4

D821 LED ( LTL42UB5N,BLUE ) 410-NT2000-149 1

C535,C153,C115,C116,C25 3,C215,C216,C353,C315,C3 16,C805,C806,C431,C432

C151,C251,C351

C154,C254,C354,C807,C808

C122,C222,C322,C136,C23 6,C336,C335,C904

ELEC. CAPACITOR(4.7uF/50V,M,105℃,TAPING 4*7,MINI)

ELEC. CAPACITOR(0.47uF/50V,M,105℃,TAPING 4*7,MINI)(Cd,Pb,Hg

ELEC. CAPACITOR(10uF/25V,M,105℃,TAPING 4*7,MINI)(Cd,Pb,Hg,C

ELEC. CAPACITOR(22uF/16V,M,105℃,TAPING 4*7,MINI)

413-HT801K-191 14

413-SPPW3-233 3 413-SPPW3-235 5

413-SPPW3-236 8

D982,D984 PHOTO TRANSISTOR(LTR-301) 416-DCM270X-120 2 IC406 INTEGRATED CIRCUIT(NJM-4556AD) 417-3113-018 1

IC104,IC105,IC204,IC205,IC 304,IC305,IC801,IC802,IC8 03,IC804

VR401

VR101,VR201,VR301,VR402,VR903

IC(LB1423N,SIP-9) 417-RMX40DSP-694 10

SLIDE VR(20KB,RA3030-20-21D1-B20K)(Cd,Pb,Cr,Hg)

418-2422MK2-215 1

VR(20KB*2,RK16K12D0023-20KB*2(HF)) 418-Q2221-084 5

VR501,VR502 VR(10KB,RK16K1150014-10KB(HF)) 418-Q2221-086 2

VR102,VR103,VR104,VR20 2,VR203,VR204,VR302,VR3 03,VR304,VR904,VR905

VR(100KC*2,RK16K124A044-100KC*2(HF)) 418-Q2422-092 11

+ 25 hidden pages

American Audio Q 2422PRO Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual