ITEM NO.QTY PART NO. DESCRIPTION VENDOR
CX 404 Replacement Parts
QSC part # Description Qty. Notes or Component Reference
Misc.
CH-000122-00 COVER, PLC 1
CO-000111-00 CONN PLUG 3-PIN EURO GRN 4
CO-000176-00 TERM SPADE SNAP #6 10/12AWG 16
TD-000077-00 OWNERS MANUAL CX 2CH 2RU 1
WC-000139-00 CORD SET 3 COND 15A 125VAC 1 (100V & 120V models)
WC-000054-00 CORDSET 3-COND 220-230 VAC 10A 1 (230V models)
WP-000404-00 CHASSIS ASSY, CX 404 (120V) 1 (120V models)
WP-000404-01 CHASSIS ASSY, CX 404 (100V) 1 (100V models)
WP-000404-02 CHASSIS ASSY, CX 404 (230V) 1 (230V models)
WP-000099-00 LOCKOUT PLATE ASSY, 4CH DCA/CX 1
WP-000404-00 (120V); WP-000404-01 (100V); WP-000404-02 (230V) Chassis Assembly
CH-000112-00 SHIELD, AC, PLX 1
CH-000118-00 RACK EAR, PL2 2SP 2
CH-000134-00 CHASSIS 4CH PLC 2RU 1
CO-000169-00 CONN IEC AC INLET 1
CO-000180-00 CONN BARRIER 6-POS W/COVER QD 2
HW-060090-SO #6-32 X 9/16" HEX STANDOFF 2
LB-000052-00 LABEL, UL/cUL APPROVAL 1
LB-000053-00 LBL, FRENCH, FUSE REPLACEMENT 1
LB-000077-00 LABEL,WARNING,HIGH ENERGY 1
LB-000285-00 LABEL, INPUT/OUTPUT CX 4CH 1
LB-000289-00 LABEL, FACEPLATE, CX 254 1
LB-160226-01 LABEL, FUSE, UL CAUT. 15A 250V 1 (230V models)
LB-160226-05 LABEL, FUSE, UL CAUT. 25A 125V 1 (100V & 120V models)
PL-000095-00 FAN INTERFACE PLX 1
PL-000136-00 KNOB, FAB, PLX PLATFORM 4
PL-000141-00 CABLE SUPPORT, 4 CHANNEL 1
PL-000144-00 INSULATOR, FAN DUCT PL2 1
SC-040041-PP #4-40 X 1/4" P/P BLACK 4
SC-060042-PP #6-32 X 1/4" P/P BLACK,SEMS,IT 3
SC-060060-PS SCREW 6-32 X .375 SEMS EXTL ZC 4
SC-060081-PP #6-32 X 1/2” P/P BLACK 4
SC-080122-HC SCREW HEX CAP 8-32 X 3/4" BLK 2
SC-082051-PL SCREW,TAP,PAN PH#8X5/16" “B”BK 13
SC-083081-PL SCREW 8-18X1/2" P/P BLK B STL 2
SW-000037-00 SWITCH, POWER, DPST ROCKER,BLK 1
WC-000138-00 CABLE ASSY AC DCA/CX 1
WP-000057-00 FAN ASSY, 3.15" 24VDC W/5.5L” 1
WP-000405-00 PCB ASSY, CX 404 (120V) 1 (120V models)
WP-000405-01 PCB ASSY, CX 404 (100V) 1 (100V models)
WP-000405-02 PCB ASSY, CX 404 (230V) 1 (230V models)
QSC Audio Products, Inc. Technical Services Group 1
QSC part # Description Qty. Notes or Component Reference
WP-000057-00 Fan Assembly
CO-000108-00 CONN PLUG 2-POS BLUE 26AWG 1
MS-000085-00 FAN, 3.15", 24VDC 1
WP-000405-00 (120V); WP-000405-01 (100V); WP-000405-02 (230V) PC Board Assembly
CA-033002-10 CAP CER 33PF 10% 500V NPO 4 C16, C54, C416, C454
CA-047002-30 CAP CER 47PF 5% 50V NPO SMT 4 C29, C66, C429, C466
CA-110002-30 CAP CER 100PF 5% 50V NPO SMT 16 C7, C8, C9, C21, C43–C45, C58, C407–C409, C421, C443–C445,
C458
CA-133001-10 CAP SM 330PF 5% 500V 2 C145, C146
CA-147003-30 CAP 470PF 5% 50V 1206 SMT 26 C1, C3, C4, C18, C25, C38, C40, C41, C55, C62, C119, C121,
C148, C181, C182, C186, C401, C403, C404, C418, C425, C438,
C440, C441, C455, C462
CA-168003-30 CAP CER 680PF 5% 50V NPO SMT 4 C24, C61, C424, C461
CA-210005-30 CAP .001UF 5% 50V 1206 SMT 13 C2, C32, C37, C120, C124
CA-210005-30 CAP .001UF 5% 50V 1206 SMT 13 C68, C75, C81, C85, C402, C432, C437, C468
CA-222001-00 CAP CER Y .0022UF 20% 125VAC 2 C122, C127
CA-227001-30 CAP CER .0027UF 10% 100V 0805 7 C34, C71, C108, C109, C128, C434, C471
CA-233001-10 CAP MYLAR .0033UF 10% 100V 1 C113
CA-233002-00 CAP CER Y .0033UF 20% 125VAC 2 C115, C118
CA-256001-30 CAP CER .0056UF 10% 200V 1206 4 C26, C63, C426, C463
CA-347001-10 CAP MYLAR .047UF 5% 50V 4 C11, C48, C411, C448
CA-347003-10 CAP MYLAR .047UF 10% 250V 4 C30, C70, C430, C470
CA-410001-00 CAP MET POLY X.1UF 20% 250VAC 1 C126
CA-410002-10 CAP MYLAR .1UF 5% 100V 4 C15, C51, C415, C451
CA-410003-10 CAP MET POLY .1UF 10% 250V 6 C27, C64, C156, C157, C427, C464
CA-410006-30 CAP CER .1UF 10% 50V X7R SMT 23 C17, C20, C31, C42, C53, C57, C67, C116, C125, C135, C155,
C162, C163, C183, C185, C191, C417, C420, C431, C442, C453,
C457, C467
CA-410011-00 CAP MMYL .1UF 10% 400V 2 C107, C123
CA-422001-10 CAP MYLAR .22UF 5% 50V 4 C13, C49, C413, C449
CA-447001-00 CAP MET POLY X.47UF 20% 250VAC 1 C117
CA-447003-00 CAP POLYP .47UF 10% 400V 1 C144
CA-510005-30 CAP LYTIC 1UF 20% 50V SMT 4 C12, C50, C412, C450
CA-510006-00 CAP MPOLY X 1UF 20% 250VAC 2 C110, C112
CA-610002-10 CAP LYTIC RL 10UF 20% 35V 8 C5, C39, C80, C86, C114, C192, C405, C439
CA-610006-30 CAP LYTIC 10UF 20% 16V SMT 1 C184
CA-647001-10 CAP LYTIC RL 47UF 10% 10V NP 22 C6, C10, C28, C35, C36, C46, C47, C65, C69, C72, C84, C87,
C406, C410, C428, C435, C436, C446, C447, C465, C469, C472
CA-647002-10 CAP LYTIC RL 47UF 20% 50V 9 C22, C23, C59, C60, C89, C422, C423, C459, C460
CA-710002-10 CAP LYTIC RL 100UF 20% 25V 10 C19, C56, C78, C79, C90, C139, C142, C143, C419, C456
CA-710004-10 CAP LYTIC RL 100UF 20% 25V 3 C138, C149, C150
CA-747001-10 CAP LYTIC RL 470UF 20% 16V 7 C131, C73, C74, C76, C77, C82, C83
CA-747004-00 CAP LYTIC RL 470UF 20% 100V 12 C152, C153, C159, C160, C165, C166, C169–C174
CA-822200-AE CAP LYTIC RL 2200UF 20% 200V 4 C132, C133, C136, C137
CH-000102-00 HEATSINK, AUDIO, PLX 4
CH-000103-00 SPRING, CLAMP, 2 HOLE 9
CH-000104-00 HEATSINK PS PLX 2
CH-000114-00 CLAMP, 2 FINGER PLX 2
CO-000106-00 CONN HD15 PIN RT ANGLE PC MT 2 J406, J6
CO-000155-00 HEADER PCB .100 2-POSITION 1 J13
CO-000161-00 CONN BLK HDR 3-PIN EURO OPEN 4 J1, J7, J401, J407
HW-000001-FC FUSE CLIPS 2 REF: F1
HW-040001-00 BRACKET,#4-40 THD,RT ANGLE 4
IC-000024-00 IC REG PWM 40V 0.1A SG3525A 1 U19
2 CX 404 replacement parts list
QSC part # Description Qty. Notes or Component Reference
IC-000046-30 IC LIN DUAL OP AMP TLO72 SO-8 4 U4, U7, U404, U407
IC-000047-30 IC LIN DUAL COMP LM393 SO-8 1 U10
IC-000048-30 IC LIN DUAL OP AMP MC33078 8 U1, U2, U5, U6, U401, U402, U405, U406
IC-000051-00 IC OPTO-ISO TCDT1101 2 U15, U17
IC-000053-30 IC LIN SMT DUAL TIMER LM556 1 U14
IC-000054-30 IC LIN SMT QUAD COMP LM339AM 1 U13
IC-000073-30 IC LIN DUAL OP AMP LM13600 2 U3, U403
IC-000134-00 IC CMOS HV DRVR IR2110 1 U18
IC-000135-00 IC LIN PWM SWITCH TOP 210 1 U16
MS-000048-HS HEAT SINK, ISOL TO-220 1 REF: Q91
MS-000112-00 FUSE 25A 125V 3AG FAST CER 1 F1 (100V and 120V models)
MS-150250-FU FUSE 15A 250V 3AG FAST CER 1 F1 (230V models)
MS-000115-30 FUSE 0.5A 32V SMT 1206 FAST 2 F2, F402
PA-000017-00 LED, GRN, SPACER ASSEMBLY 13 LD2–LD4, LD7–LD9, LD11, LD402–LD404, LD407–LD409
PA-000018-00 LED, YEL, SPACER ASSEMBLY 4 LD1, LD6, LD401, LD406
PA-000019-00 LED, RED, SPACER ASSEMBLY 4 LD5, LD10, LD405, LD410
PC-001825-00 PCB, PLC, 4CH 1
PL-000114-00 INSULATOR, IGBT/RECT HS, PLX 2
PL-000126-00 SPRING, SEAT, PLX 9
PL-000128-00 SPACER, LED, .276" 4 REF: R35, R143, R435, R543
PL-000135-00 INSULATOR, MICA 1.25" X 1.75" 1 REF: Q96, Q97
PT-210000-AT RES VAR IT 1K 20% 0.15W CARB 4 VR2, VR4, VR402, VR404
PT-310004-00 RES VAR IT 10K 20% 0.2W 11MM 4 VR1, VR3, VR401, VR403
QD-000014-QD DIODE TO220 ULTRAFAST 200V 15A 4 D74, D75, D80, D81
QD-000042-00 DIODE RECT ULTRAFAST 400V 3A 2 D70, D71
QD-000076-00 XISTOR NPN TO-220 250V 4 Q25, Q58, Q425, Q458
QD-000077-00 XISTOR PNP TO-220 250V 4 Q24, Q57, Q424, Q457
QD-000080-20 DIODE ZNR 11V 1W 5% 1N4741A 2 D87, D88
QD-000102-30 DIODE SW 1N4148 SMT 75V 75MA 64 D1–D3, D6–D8, D11–D14, D17, D18, D20–D25, D28–D30, D32,
D33, D35, D48–D52, D55, D57, D59, D63–D65, D67, D69, D73,
D84, D90, D91, D401–D403, D407, D408, D411–D414, D417,
D418, D420–D425, D428–D430, D432, D433, D435
QD-000103-30 XISTOR NPN SMT 40V .2A .2W 39 Q5, Q7–Q9, Q12, Q17, Q21, Q23, Q37, Q38, Q40–Q42, Q45, Q49,
Q51, Q56, Q89, Q90, Q92 Q93, Q95, Q405, Q407–Q409, Q412,
Q417, Q421, Q423, Q437, Q438, Q440–Q442, Q445, Q449, Q451,
Q456
QD-000104-30 XISTOR PNP SMT 40V .2A .2W 56 Q1–Q4, Q10, Q11, Q13, Q16, Q20, Q22, Q30, Q31–Q36, Q39, Q43,
Q100, Q401–Q404, Q406, Q410, Q411, Q413, Q416, Q420, Q422,
Q430
QD-000104-30 XISTOR PNP SMT 40V .2A .2W 56 Q6, Q44, Q46, Q50, Q54, Q55, Q87, Q88, Q94, Q98, Q99, Q431–
Q436, Q439, Q443, Q444, Q446, Q450, Q454, Q455
QD-000105-30 XISTOR NPN SMT 300V .2A .2W 4 Q14, Q47, Q414, Q447
QD-000106-30 XISTOR PNP SMT 300V .2A .2W 4 Q15, Q48, Q415, Q448
QD-000108-30 DIODE SMT SWITCH 200V .2A 50NS 12 D9, D10, D31, D34, D409, D410, D431, D434
QD-000110-30 DIODE ZNR 6.2V 5% .3W SMT 3 D19, D56, D419
QD-000113-30 DIODE ZNR 10V 5% .3W SMT 1 D66
QD-000115-30 DIODE SMT RECT 600V 1A 3 D58, D60, D86
QD-000116-30 DIODE RECT SMT 200V 1A 13 D4, D5, D26, D27, D62, D76, D77, D82, D83, D404, D405, D426,
D427
QD-000154-00 XISTOR NPN TO-220 230V 4 Q18, Q52, Q418, Q452
QD-000155-00 XISTOR PNP TO-220 230V 4 Q19, Q53, Q419, Q453
QD-000156-00 XISTOR PNP TO-220 100V 3A 40W 1 Q91
QD-000157-10 DIODE RECT DO15 1000V 1.5A 8 D15, D16, D36, D37, D415, D416, D436, D437
QD-000169-00 XISTOR IGBT TO-247AC 600V 55A 2 Q96, Q97
QD-000170-00 DIODE BRIDGE RECT 600V 50A 1 BR1
QSC Audio Products, Inc. Technical Services Group 3
QSC part # Description Qty. Notes or Component Reference
QD-001302-PN XISTOR PNP TO-3P 200V 15A 8 Q26, Q28, Q59, Q61, Q426, Q428, Q459, Q461
QD-003281-NP XISTOR NPN TO-3P 200V 15A 8 Q27, Q29, Q60, Q62, Q427, Q429, Q460, Q462
QD-004744-ZA DIODE ZNR 15V 5% 1W 1N4744A 2 D53, D54
RE-.04703-10 RES MOFP .47 5% 2W MINI 32 R76, R77, R80, R81, R83–R86, R183–R186, R188, R190–R192,
R476, R477, R480, R481, R483–R486, R583–R586, R588, R590,
R591, R592
RE-.27001-10 RES MOFP 2.7 5% 2W MINI 1 R224
RE-.56002-10 RES MOFP 5.6 5% 2W MINI 7 R82, R189, R354, R355, R373, R482, R589
RE-000210-NR THERMISTOR NTC 15A CUR LIM 1 R324
RE-000230-NR THERMISTOR NTC 10K 5% 4 R35, R143, R435, R543
RE-001003-30 RES SMT 10 OHM 1% 1/8W 1206 4 R353, R356, R358, R359
RE-001008-10 RES MOFP 10 5% 2W MINI 8 R75, R79, R182, R187, R475, R479, R582, R587
RE-003921-30 RES SMT 39.2 OHM 1% 1/8W 1206 22 R65, R68, R174, R175, R220–R223, R225, R249, R226–R228,
R230, R231, R233, R349, R357, R465, R468, R574, R575
RE-004752-30 RES SMT 47.5 1% 1/10W 100V 10 R98, R99, R202, R205, R209, R498, R499, R602, R605, R609
RE-005606-10 RES MOFP 56 5% 2W MINI 1 R372
RE-007502-30 RES SMT 75 1% 1/10W 100V 8 R2, R3, R108, R109, R402, R403, R508, R509
RE-010001-30 RES SMT 100 OHM 1% 1/8W 1206 8 R73, R74, R180, R181, R473, R474, R580, R581
RE-010002-30 RES SMT 100 1% 1/10W 100V 18 R19, R24, R57, R58, R127, R132, R166, R167, R334, R364, R419,
R424, R457, R458, R527, R532, R566, R567
RE-020002-30 RES SMT 200 1% 1/10W 100V 8 R69, R70, R176, R177, R469, R470, R576, R577
RE-027401-30 RES SMT 274 1% 1/10W 100V 8 R59, R60, R164, R165, R459, R460, R564, R565
RE-038301-30 RES SMT 383 1% 1/10W 100V 4 R39, R146, R439, R546
RE-047502-30 RES SMT 475 1% 1/10W 100V 4 R25, R133, R425, R533
RE-053602-30 RES SMT 536 1% 1/10W 100V 10 R20, R130, R210, R211, R361, R374, R420, R530, R611, R612
RE-063402-30 RES SMT 634 1% 1/8W 1206 1 R370
RE-093101-30 RES SMT 931 OHM 1% 1/10W 0805 5 R38, R147, R379, R438, R547
RE-110006-30 RES SMT 1.00K 1% 1/8W 1206 18 R1, R7, R37, R102, R103, R111, R145, R232, R250, R252, R369,
R401, R407, R437, R502, R503, R511, R545
RE-115002-30 RES SMT 1.50K 1% 1/10W 100V 30 R21, R28, R32, R33, R36, R42, R44, R131, R138, R140, R141,
R144, R149, R151, R270, R273, R421, R428, R432, R433, R436,
R442, R444, R531, R538, R540, R541, R544, R549, R551
RE-116202-30 RES SMT 1.62K 1% 1/10W 100V 8 R61, R64, R168, R171, R461, R464, R568, R571
RE-117401-30 RES MF 1.74K 1% 1/10W 0805 5 R96, R200, R272, R496, R600
RE-120002-30 RES SMT 2.00K 1% 1/10W 100V 1 R266
RE-122103-30 RES SMT 2.21K 1% 1/10W 100V 17 R43, R97, R110, R150, R204, R240, R247, R264, R265, R267,
R347, R348, R443, R497, R510, R550, R604
RE-134802-30 RES SMT 3.48K 1% 1/10W 100V 4 R88, R195, R488, R595
RE-146401-30 RES SMT 4.64K 1% 1/10W 100V 8 R78, R87, R193, R194, R478, R487, R593, R594
RE-147502-30 RES SMT 4.75K 1% 1/10W 100V 25 R4, R23, R107, R112, R113, R128, R155, R327, R330, R362,
R404–R406
RE-147502-30 RES SMT 4.75K 1% 1/10W 100V 25 R5, R6, R48, R90, R423, R448, R490, R507, R512, R513, R528,
R555
RE-156202-30 RES 5.62K 1/10W .1% 0805 16 R10, R11, R13, R14, R117, R118, R120, R121, R410, R411, R413,
R414, R517, R518, R520, R521
RE-159002-30 RES SMT 5.90K 1% 1/10W 100V 16 R26, R53, R56, R93, R134, R160, R163, R201, R426, R453, R456,
R493, R534, R560, R563, R601
RE-162002-00 RES MOFP 6.2K 5% 2W 5 R251, R257, R269, R274, R275
RE-175002-30 RES SMT 7.50K 1% 1/10W 100V 8 R12, R105, R114, R123, R412, R505, R514, R523
RE-178701-30 RES SMT 7.87K 1% 1/10W 100V 2 R208, R360
RE-190902-30 RES SMT 9.09K 1% 1/10W 100V 18 R8, R34, R100, R101, R119, R142, R206, R207,R248, R258,R408,
R434, R500, R501, R519, R542, R606, R607
RE-210003-30 RES SMT 10.0K 1% 1/10W 100V 12 R89, R95, R106, R336, R338, R363, R366, R375, R376, R489,
R495, R506
RE-210005-EM RES MOFP 10K 5% 2W 4 R256, R276, R277, R278
4 CX 404 replacement parts list
QSC part # Description Qty. Notes or Component Reference
RE-212702-30 RES SMT 12.7K 1% 1/10W 100V 37 R9, R17, R40, R41, R46, R52, R66, R67, R115, R116, R125, R148,
R153, R159, R172, R173, R241, R245, R259, R329, R337, R409,
R417, R440, R441, R446, R452, R466, R467, R515, R516, R525,
R548, R553, R559, R572, R573,
RE-215002-30 RES SMT 15.0K 1% 1/10W 100V 2 R262, R365
RE-216501-CM RES MF 16.5K 1% 1/2W 4 R27, R135, R427, R535
RE-220002-30 RES SMT 20.0K 1% 1/10W 100V 22 R16, R29, R47, R51, R94, R124, R136, R154, R158, R196, R197,
R229, R242, R244, R246, R253, R271, R331, R346, R416, R429,
R447, R451, R494, R524, R536, R554, R558, R596, R597
RE-221502-30 RES SMT 21.5K 1% 1/10W 100V 4 R15, R122, R415, R522
RE-224901-30 RES SMT 24.9K 1% 1/10W 100V 5 R92, R199, R325, R492, R599
RE-229402-30 RES SMT 29.4K 1% 1/10W 100V 4 R45, R152, R445, R552
RE-230002-10 RES MOFP 30K 5% 2W MINI 2 R351, R352
RE-239202-30 RES SMT 39.2K 1% 1/10W 100V 16 R18, R54, R55, R126, R161, R162, R243, R261, R323, R332,
R418, R454, R455, R526, R561, R562
RE-247503-30 RES SMT 47.5K 1% 1/10W 100V 5 R30, R137, R343, R430, R537
RE-269801-30 RES SMT 69.8K 1% 1/8W (1206) 9 R71, R72, R178, R179, R279, R471, R472, R578, R579
RE-310002-30 RES SMT 100K 1% 1/10W 100V 7 R31, R104, R139, R234, R431, R504, R539
RE-310003-30 RES SMT 100K 1% 1/8W 1206 11 R62, R63, R169, R170, R268, R344, R345, R462, R463, R569,
R570
RE-315002-30 RES MF 150K 1% 1/8W 1206 12 R49, R50, R156, R157, R333, R335, R341, R342, R449, R450,
R556, R557
RE-339201-30 RES SMT 392K 1% 1/10W 100V 7 R22, R129, R260, R263, R340, R422, R529
RE-348702-30 RES MF 487K 1% 1/8W 1206 4 R321, R322, R326, R328
RE-375005-BM RES MF 750K 5% 1/2W 100PPM 2 R339, R371
RE-410001-30 RES SMT 1.0 MEG OHM 1% 1/8W 4 R91, R198, R491, R598
SC-040041-PP #4-40 X 1/4" P/P BLACK 4
SC-063100-PP #6-20 X 5/8" “AB” TYPE 1 XRECE 20
SC-081101-SP #8-18 X 5/8", TYPE 1 P/P BLACK 4
SW-000029-SW RELAY, SPKR PROTECT,SPDT,24VDC 1 K1
SW-000050-00 SWITCH DIP 10-POSITION RT 2 SW1, SW401
WC-0.5018-JW JMPR INS 0.5" 18AWG SLD WHT 1 W5 (100V and 120V models); W6 (230V models)
WC-000002-10 JUMPER 22GA BARE SOLID 2 W1, W2
WC-000115-00 AC SWITCH WIRE, BLK, LONG 1 REF: ES2, TO SWITCH
WC-000115-01 AC SWITCH WIRE, RED, SHORT 1 REF: ES1, TO SWITCH
WC-000118-00 WIRE ASSY, BLK, LONG 1 REF: EH1–EH2
WC-000118-01 WIRE ASSY, RED, SHORT 1 REF: EL1–E120A
WC-000141-00 CABLE ASSY, 26PPM 2 REF: J2 TO 4, J402 TO J404
WC-000142-00 CABLE ASSY, 34PPM 1 REF: J3 TO 5
WC-000143-00 SPKR WIRE ASSY, PLC 4CH 2RU 1
XF-000005-00 BEAD FERRITE W/20AWG LEAD 2 L9, L10
XF-000023-00 CHOKE COMMON MODE 2.2MH 2 L3, L4
XF-000061-00 INDUCTOR TORIOD 1.9UH 13GA 1 L6
XF-000064-00 XFMR AMP HOUSEKEEPING PLC 1 T1
XF-000066-00 INDUCTOR AIR 2UH 14/20GA 4 L1, L2, L401, L402
XF-000183-00 XFMR PWR DCA 3422 1 T2 (120V and 230V models)
XF-000188-00 XFMR PWR DCA 3422 (100V) 1 T2 (100V models)
QSC Audio Products, Inc. Technical Services Group 5
6 CX 404 replacement parts list
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