JBL PX300.4 User manual

PX300.4
4 CHANNEL
POWER AMPLIFIER
SERVICE MANUAL
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev1 2/2004

CONTENTS
Specifications………………………….…………………..……1
Features…………………………………………………………2
Test Conditions And Notes……………………………………2
Controls/connections…………………………………..………3
Mounting…………………………………………….…..………3
Applications………………………………………..……………4
Typical System Configuration…………………………………5
Troubleshooting……………………………………….……..…6
PCB drawings……………………………………..……………7
Parts List………………………………………………..………9
Block Diagrams……………………………………….………12
Semiconductor Pinouts………………………………………13
Exploded view…………………………………………………16
Schematics……………………………………………….……17
Packing…………………………………………………………26
SPECIFICATIONS
Power Output, 4 Ohms 75W x 4
Power Output, 2 Ohms 150W x 4
Power Output, .Bridged, 4 Ohms 300W x 2
MIN. Speaker Impedance 2 ohm
Frequency Response ..... 11Hz~45KHz, ±1dB
Input Sensitivity (RCA type) 250mV~6V
THD + Noise (4 Ohms) ..... 0.04%
Signal-to-Noise 95 dB
Maximum Current Draw 78A
Fuse Replacement 30Ax2
External Dimensions
Length 12 ¼” (312mm)
Width 17” (432mm)
Depth 2 9/16” (66mm)
JBL continually strives to improve its products. New materials, production methods and design refinements are introduced into existing
models without notice as a routine expression of our design philosophy. For this reason, Power Series Multichannel Automotive
Amplifiers may differ in some respects from their published specifications and descriptions, but will always equal or exceed the original
specifications unless otherwise stated.
PowerAmplifier
PX300.4

Px300.4
(rear panel)
POWER FUSES
GND REM BATT
Px300.4
SPEAKER OUTPUTS SPEAKER OUTPUTS
STEREO
REAR
FRONT
LRLR
BRIDGED
NEON NEON
-
+
+
-
LF
System
+
-
RF
System
Subwoofer
Set REAR
X-OVER MODE to LP
(on input panel)
FLAT HP LP
MODE
Set FRONT
X-OVER MODE to HP
(on input panel)
FLAT HP LP
MODE
Set FRONT
INPUT MODE to ST
(on input panel)
Set REAR
INPUT MODE to MO
(on input panel)
ST
INPUT
MODE
MO
Px300.4
(rear panel)
POWER FUSES
GND REM BATT
Px300.4
SPEAKER OUTPUTS SPEAKER OUTPUTS
STEREO
REAR
FRONT
LRLR
BRIDGED
NEON NEON
+
-
+
-
LR Speaker
RR Speaker
RF Speaker
LF Speaker
+
-
+
-
Set REAR and FRONT
INPUT MODE to ST
(on input panel)
Set REAR and FRONT
X-OVER MODE to FLAT
(on input panel)
FLAT HP LP
MODE
ST
INPUT
MODE
MO
Figure 6. The JBL Px300.4
amplifier is set to stereo mode
to drive front and rear pairs of
full-range speakers.
NOTE: To limit bass sent to
full-range speakers, set
X-OVER MODE to HP. See
page 6 to set FREQ and SLOPE.
Figure 7. The JBL Px300.4
amplifier is set to drive a stereo
component system and a
subwoofer with a nominal
impedance of 4 ohms or greater.
NOTE: To drive a pair of rear
midbass speakers (instead of
subwoofer), set INPUT MODE
to ST, X-OVER MODE to LP,
and use DBO to set HP filter.
APPLICATIONS – Px300.4
The JBL Px300.4 amplifier can be set
up for stereo or tri-mode operation, as
shown in Figures 6 and 7.
NOTE: For simplicity, Figures 6 and 7 do
not show power, remote and input
connections.
PowerAmplifier
PX300.4

TROUBLESHOOTING
SYMPTOM LIKELY CAUSE SOLUTION
No audio No voltage at BATT+ Check voltages at
(POWER LED or REM terminals, amplifier terminals
is off) or bad or no ground with VOM
connection
No audio DC voltage on Amplifier may need
(PROTECT LED amplifier output service; see enclosed
flashes every warranty card for
4 sec.) service information
No audio Amplifier is Make sure amplifier
(PROTECT overheated cooling is not blocked
LED is on) at mounting location;
verify speaker-system
impedance is within
specified limits (see
“Specifications” on the
next page)
No audio Voltage less than 9V on Check vehicle
(PROTECT BATT+ connection charging system for
and POWER defective voltage
LEDs flash) regulator
I-E/OPT LED Amplifier is being Check INPUT
is on all times overdriven LEVEL setting;
(not flashing) see previous page
No audio Voltage more than 16V Check vehicle
(PROTECT or less than 8.5V on charging system for
LED is on) BATT+ connection defective voltage
regulator
Distorted audio Input sensitivity is Check INPUT
not set properly, or LEVEL setting; or
amplifier or source check speaker wires
unit is defective for shorts or grounds
Distorted audio Short circuit in Remove speaker leads
and PROTECT speaker or wire one at a time to locate
LED flashes shorted speaker or
wire, then repair
Music lacks Speakers are not Check speaker
“punch” connected properly connections for
proper polarity
Power Amplifier
PX300.4

TRS-00-00087 TRANSISTOR SMALL SIGNAL PNP KTA1023Y 5 Q16,133,233,333,433
TRS-00-00088 TRANSISTOR SMALL SIGNAL NPN KTC1027Y 4 Q143,243,343,443
TRS-00-00090 TRANSISTOR SMALL SIGNAL PNP KTA1266GR 6 Q1,2,5,6,12.13
TRS-00-00091 TRANSISTOR SMALL SIGNAL PNP KTA1268GR 9 Q4,141,142,241,242,341,342,441,442
TRS-00-00110 TRANSISTOR SMALL SIGNAL NPN KTC3198GR 5 Q11,14,15,152,252
TRS-00-00109 TRANSISTOR SMALL SIGNAL NPN KTC3198BL 1 Q3
TRS-00-00111 TRANSISTOR SMALL SIGNAL NPN KTC3200GR 12 Q131,132,151,231,232,251,331,332,351,431
Q432,451
TRS-00-00073 F.E.T N-CH JFET KTK30AGR 5 Q61,101,201,301,401
DIO-00-00006 DIODE SWITCHING SIGNAL DIODE 1SS133 15 D2,3,4,9,10,61,62,151,251,351
D451,801,802,803,804
DIO-00-00003 DIODE RECTIFIER 1N4004 1 D1
DIO-00-00020 DIODE ZENNER DIODE 1W 15V 1N4744 4 D191,291,391,491
DIO-00-00108 DIODE FAST RECOVERY FR154 8 D51,52,53,54,55,56,57,58
RES-00-00523 RESISTOR METAL FILM 1/5WF 4.7KOHM 1 R27
RES-00-00545 RESISTOR METAL FILM 1/5WF 5.6K OHM 4 R127,227,327,427
RES-00-00589 RESISTOR METAL FILM 1/5WF 9.4K OHM 2 R112,312
RES-00-00399 RESISTOR METAL FILM 1/5WF 10.5K OHM 1 R26
RES-00-00425 RESISTOR METAL FILM 1/5WF 15K OHM 2 R212,412
RES-00-00421 RESISTOR METAL FILM 1/5WF 15.2K OHM 4 R111.211.311.411
RES-00-00467 RESISTOR METAL FILM 1/5WF 22K OHM 4 R131,231,331,431
RES-00-00537 RESISTOR METAL FILM 1/5WF 47K OHM 10 R102,103,113,202,203,302,303,313,402,403
RES-00-00556 RESISTOR METAL FILM 1/5WF 56K OHM 8 R107,108,207,208,307,308,407,408
RES-00-00591 RESISTOR METAL FILM 1/5WF 91K OHM 6 R101,201,301,401,213,413
RES-00-00610 RESISTOR CARBON FILM 1/5WJ 10 OHM 1 R5
RES-00-00660 RESISTOR CARBON FILM 1/5WJ 22 OHM 16 R135,136,145,146,235,236,245,246.335,336
R345,346,435,436,445,446
RES-00-00716 RESISTOR CARBON FILM 1/5WJ 47 OHM 16 R22,23,24,25,36,37,38,39,137,147
R237,247,337,347,437,447
RES-00-00622 RESISTOR CARBON FILM 1/5WJ 150 OHM 4 R151,251,351,451
RES-00-00662 RESISTOR CARBON FILM 1/5WJ 240 OHM 2 R381,481
RES-00-00741 RESISTOR CARBON FILM 1/5WJ 680 OHM 1 R6
RES-00-00756 RESISTOR CARBON FILM 1/5WJ 820 OHM 4 R110,210,310,410
RES-00-00633 RESISTOR CARBON FILM 1/5WJ 1K OHM 20 R7,20,21,34,35,42,109,134,144,209
R234,244,309,334,344,409,434,444,809,812
RES-00-00595 RESISTOR CARBON FILM 1/5WJ 1.2K OHM 6 R28,43,172,272,372,472
RES-00-00598 RESISTOR CARBON FILM 1/5WJ 1.5K OHM 4 R154,254,354,454
RES-00-00602 RESISTOR CARBON FILM 1/5WJ 1.8K OHM 2 R383,483
RES-00-00644 RESISTOR CARBON FILM 1/5WJ 2.7K OHM 4 R148,248,348,448
RES-00-00676 RESISTOR CARBON FILM 1/5WJ 3.9K OHM 5 R2,138,238,338,438
RES-00-00702 RESISTOR CARBON FILM 1/5WJ 4.7K OHM 3 R1,13,14
RES-00-00720 RESISTOR CARBON FILM 1/5WJ 5.6K OHM 16 R116,119,122,125,216,219,222,225,316,319
R322,325,416,419,422,425
RES-00-00734 RESISTOR CARBON FILM 1/5WJ 6.8K OHM 16 R118,124,133,143,218,224,233,243,318,324
R333,343,418,424,433,443
RES-00-00751 RESISTOR CARBON FILM 1/5WJ 8.2K OHM 1 R12
RES-00-00608 RESISTOR CARBON FILM 1/5WJ 10K OHM 38 R3,4,29,62,104,114,115,120,121.126
R128,130,204,214,215,220,221,226.228.230
R304,314,315,320,321,326,328,330.404.414
R415,420,421,426,428,430,805,810
RES-00-00623 RESISTOR CARBON FILM 1/5WJ 15K OHM 6 R10,33,155,255,355,455
RES-00-00630 RESISTOR CARBON FILM 1/5WJ 18K OHM 4 R171,271,371,471
RES-00-00658 RESISTOR CARBON FILM 1/5WJ 22K OHM 10 R8,16,117.123,217,223,317,323,417,423
RES-00-00733 RESISTOR CARBON FILM 1/5WJ 6.2K OHM 1 R807
RES-00-00663 RESISTOR CARBON FILM 1/5WJ 24K OHM 2 R105.205
RES-00-00666 RESISTOR CARBON FILM 1/5WJ 27K OHM 3 R17,806,811
RES-00-00687 RESISTOR CARBON FILM 1/5WJ 33K OHM 2 R9,808
RES-00-00697 RESISTOR CARBON FILM 1/5WJ 39K OHM 2 R382,482
RES-00-00724 RESISTOR CARBON FILM 1/5WJ 51K OHM 1 R31
RES-00-00730 RESISTOR CARBON FILM 1/5WJ 56K OHM 6 R44.45,156,256,356,456
RES-00-00748 RESISTOR CARBON FILM 1/5WJ 75K OHM 4 R801,802,803,804
RES-00-00604 RESISTOR CARBON FILM 1/5WJ 100K OHM 3 R63,106,206
RES-00-00647 RESISTOR CARBON FILM 1/5WJ 200K OHM 2 R380,480
RES-00-00654 RESISTOR CARBON FILM 1/5WJ 220K OHM 1 R61
RES-00-00706 RESISTOR CARBON FILM 1/5WJ 430K OHM 1 R11
RES-00-00278 RESISTOR CARBON FILM 1/4WJ 10 OHM 1 R15
RES-00-00312 RESISTOR CARBON FILM 1/4WJ 220 OHM 2 R18,19
RES-00-00053 RESISTOR CARBON FILM 1/2WJ 4.7 OHM 4
R161,261,361,461

ELC-00-00116 CAPACITOR ELECTROLYTIC "SE" 2.2uF/50V
2
C801,802
ELC-00-00626 CAPACITOR ELECTROLYTIC "SE" 10uF/50V
1
C62
ELC-00-00160 CAPACITOR ELECTROLYTIC "SG" "SMS" 4.7uF/50V
10
C103,107,131,203,207,231,307,331,431,407
ELC-00-00125 CAPACITOR ELECTROLYTIC "SG" "SMS" 10uF/16V
1
C12
ELC-00-00137 CAPACITOR ELECTROLYTIC "SG" "SMS" 10uF/25V
1
C7
ELC-00-00127 CAPACITOR ELECTROLYTIC "SG" "SMS" 22uF/16V
8
C101,102,201,202,301,302,401,402
ELC-00-00130 CAPACITOR ELECTROLYTIC "SG" "SMS" 47uF/16V
3
C3,8.15
ELC-00-00159 CAPACITOR ELECTROLYTIC "SG" "SMS" 47uF/50V
4
C55,65,75,85
ELC-00-00523 CAPACITOR ELECTROLYTIC "SG" "SMS" 100uF/16V
8
C1,2 ,5,142,171,271,371,471
ELC-00-00254 CAPACITOR ELECTROLYTIC "SXE" 100uF/25V
1
C9
ELC-00-00133 CAPACITOR ELECTROLYTIC "SG" "SMS" 330uF/16V
4
C191,291,391,491
CEC-00-00077 CAPACITOR CERAMIC DISK 50V "NPO" 10pF
4
C105,205,305,405
CEC-00-00090 CAPACITOR CERAMIC DISK 50V "NPO" 22pF
5
C61,170,270,370,470
CEC-00-00093 CAPACITOR CERAMIC DISK 50V "NPO" 27pF
2
C208,408
CEC-00-00103 CAPACITOR CERAMIC DISK 50V "NPO" 47pF
8
C109,112,209,212,309,312,409,412
CEC-00-00105 CAPACITOR CERAMIC DISK 50V "NPO" 56pF
2
C108,308
CEC-00-00108 CAPACITOR CERAMIC DISK 50V "NPO" 68pF
4
C132,232,332,432
CEC-00-00073 CAPACITOR CERAMIC DISK 50V "NPO" 100pF
12
C134,141,144,234,241,244,334,341,344,434
C441,444
CEO-00-00075 CAPACITOR CERAMIC DISK 50V "NPO" 103pF
1
C21
CEC-00-00102 CAPACITOR CERAMIC DISK 50V 473pF
2
C23,24
CEC-00-00076 CAPACITOR CERAMIC DISK 50V 104pF
19
C4,6,14,25,39,701,702,703,704,705
C706,707,708,709,710,711,712,713,714
CEO-00-00074 CAPACITOR CERAMIC DISK 50V "NPO" 102pF
4
C100,200,300,400
MYC-00-00184 CAPACITOR MYLAR 5% 100V 102J
1
C17
MYC-00-00186 CAPACITOR MYLAR 5% 100V 222J
2
C16,18
MYC-00-00183 CAPACITOR MYLAR 5% 100V 104J
4
C161,261,361,461
MYC-00-00090 CAPACITOR MYLAR 63V "TL" 473J
4
C135,235,335,435
MYC-00-00157 CAPACITOR MYLAR 63V "TL" 823J
16
C110,111,113,114,210,211,213,214 ,310,311
C313,314,410,411,413,414
MYC-00-00083 CAPACITOR MYLAR 63V "TL" 104J
1
C26
MYC-00-00156 CAPACITOR MYLAR 63V "TL" 184J
2
C316,416
MYC-00-00066 CAPACITOR MYLAR 63V "TL" 474J
2
C315,415
MYC-00-00085 CAPACITOR MYLAR 63V "TL" 105J
2
C13.29
-
MAIN PCB
-
ICO-00-00022 I.C PWM IC "DIP 14" TL494CN 1
U1
ICO-00-00109 I.C QUAD OP AMP "DIP 14" NJM2058D 8 U101,102,103,104,105,108,109,110
ICO-00-00003 I.C DUAL OP AMP "DIP 08" TL072 4 U111,112,113,114
ICO-00-00095 I.C DUAL COMPARATOR "DIP08" KIA393P 1 U801
TRS-00-00089 TRANSISTOR VIDEO TR PNP KSA1220 4 Q144,244,344,444
TRS-00-00106 TRANSISTOR VIDEO TR NPN KSC2690 4 Q134,234,334,434
TRS-00-00030 TRANSISTOR AUDIO POWER NPN 2SC4468 4 Q135,235,335,435
TRS-00-00024 TRANSISTOR AUDIO POWER PNP 2SA1695 4 Q145,245,345,445
TRS-00-00111 TRANSISTOR SMALL SIGNAL NPN KTC3200GR 4 Q130.230.330,430
FET-00-00034 F.E.T N-CH MOSFET FQP50N06 "TO-220" 8 Q7,8,9,10,17,18,19,20
DIO-00-00048 DIODE FAST RECOVERY 1N5404 1
D7
DIO-00-00152 DIODE FAST RECOVERY YG225D2 4 D5,6,11,12
DIO-00-00277 LED 3 PHI RED LED HNRD-3401L 1 LED1
DIO-00-00243 LED 3 PHI BLUE LED HL-304H1BC2 1 LED2
DIO-00-00279 LED 3 PHI TWO COLOR LED LT6G62-D7-D63 1 LED801
RES-00-00853 RESISTOR MOR-S 2WJ 2.2K OHM 2 R40,41
RES-00-01077 RESISTOR MOR-S 2WJ "FORMING TYPE 20m
m100 OHM 2
R30,32
RES-00-01044 RESISTOR MOR-S 2WJ "FORMING TYPE 15mm680 OHM 4
R162,262,362,462
RES-00-01043 RESISTOR MOR-S 2WJ "FORMING TYPE 15mm470 OHM 4
R191,291,391,491
RES-00-01029 RESISTOR
WIRE WOUND 7WJ
(25m/m) 0.1 OHM 8
R152,153,252,253,352,353,452,453
THS-00-00013 THERMISTOR 50K FTD5-350 1
TH
VOL-00-00190 VOLUME V12L5(9X5)G(PH2D)N17KC 3B20K X 2 2 VR101,201
VOL-00-00281 VOLUME V12L5(9X5)G(8R)(PH2D)N15KC 50K x 8 2 VR102,202
VOL-00-00282 VOLUME V12L5(9x5)G(4R)(PH2D)N15KC 15A2K x 2, 15A200Kx21 VR301
VOL-00-00283 VOLUME V12L5(9X5)G(PH2D)N17KC B500 x 2 1 VR302

ELC-00-00092 CAPACITOR ELECTROLYTIC "RX"(16x25m/m) 2200 F/25V 4C10,11,32,33
ELC-00-00290 CAPACITOR ELECTROLYTIC "HC"(35x26m/m) 6800 F/50V 2C27,28
COR-TF-00353 CORE 37PHI ISU 6T(0.7X12):16T(0.7X4) 2T1,2
COI-00-00096 INDUCTOR BAR CORE CL-320 1L1
COI-00-00093 INDUCTOR CHOCK COIL CL-510 2L3,4
TER-00-00220 TERMINAL POWER TERMINAL KTD-9218A .3P 1TER1
TER-00-00219 TERMINAL OUTPUT TERMINAL
KTD-9216A 4P 2
TER2,3
JAC-00-00041 RCA JACK GOLD PLATE DJB-552A (t ) 1JACK2
JAC-00-00043 RCA JACK GOLD PLATE DJB-554A (t ) 1JACK1
HOD-00-00006 FUSE HOULDER PCB TYPE JSF-08031 2FUSE01,02
FUS-AT-00006 AUTO FUSE ATC 30A 4SET(2)+ACCESSORY(2)
WIR-00-00016 GND WIRE #1007 AWG #22 BLACK , 3.2PHI 80m/m 1W1
TUB-00-00007 TEFLON TUBE 0.7PHI 5m/m 6 Q130.230.330,430,TH
TUB-00-00005 TEFLON TUBE 0.7PHI 12m/m 1LED801
SWI-00-00022 SWITCH SLIDE SW,2C2P JSS-2208A (6m/m) 4 SW3,4,5,6
SWI-00-00035 SWITCH SLIDE SW,4C3P JSS-4319A (6m/m) 2 SW1,2
ELC-00-00477 CAPACITOR ELECTROLYTIC "SD,SHL"(10x21m/m470 F/50V 2
C19,20
HEA-01-574AA HEAT SINK MAIN AL/EXTRUSION(L=430.0mm) (BLACK SPRAY,SANDTON) 1
PAN-06-561AA PANEL FRONT EGI,1.2t BLACK SPRAY(SANDTON) 1
PAN-06-564AA PANEL REAR EGI,1.2t BLACK SPRAY(SANDTON) 1
COV-22-623B0 WINDOW ACRYLIC,3.0t 1
BAD-01-515AA BADGE AL LOGO:JBL,MODEL NAME: SILK 1 1
FOO-01-504B0 FOOT MOUNTING ADC-7(DIE CASTING) 2
COV-22-549AA LENS (WITH SILKSCREEN) ACRYLIC 1
ILL-22-503A0 INDICATOR ACRYLIC(CLEAR) 3
BKT-14-522A0 BRACKETLAMP SK5(BK-P) ACCESSORY 4
BKT-05-520A0 BRACKETTR(A) CR,91.0x15.0x1.5t(NI-P) 2
BKT-05-521A0 BRACKETTR(B) CR,103.0x15.0x1.5t(NI-P) 2
SUB-28-573A0 CUSHION BKT-TR(A) FIBER,87.0x15.0x0.5t 2
SUB-28-574A0 CUSHION BKT-TR(B) FIBER,99.0x15.0x0.5t 2
SUB-33-513A0 CUSHION RUBBER(A) RUBBER,5.0x7.0x1.6t TR(4),THERMISTOR(1) 5
SUB-33-006A0 CUSHION RUBBER(B) RUBBER,012.0x05.0x2.0t ACCESSORY(4) 4
SIL-34-001A0 SILICON PAD (SP1000)22.0x0.3t 780mm
SUP-29-502A0 SUPPORTPCB NYLON,L=4.5mm 7
SUB-27-524A0 SWITCH DECAL FELT,12.0x7.0x0.3t 6
SUB-28-519A0 PAPER SPACER(A) FIBER,200.0x8.0x0.5t TR 1
SUB-28-503A0 PAPER SPACER(B) FIBER,200.0x10.0x0.5t FET 1
SUB-12-576A0 TUBE 05.0x40mm INDICATOR 3
SC5-NB-30120 SCREW STT2 BH 3x12 NI-P PCB SUPPORT 7
SC5-BB-30080 SCREW STT2 BH 3x8 BK S/PANEL+H/S(10),RCA(3),TERMINAL(4) 17
SC1-NL-30060 SCREW SML 3x6 NI(NO SERRATION) H/S+WINDOW(8) 8
SC1-NL-40100 SCREW SML 4x10 NI-P H/S+FOOT MOUNTING(10) 10
SC4-BP-40250 SCREW STT1 PH 4x25 BK BRACKET TR (12) 12
SC4-BL-40250 SCREW STT1 LH 4x25 BK ACCESSORY(4) 4
POL-31-084A0 POLY BAG(A) VINYL,380.0x580.0x0.1t SET 1
POL-31-007A0 POLY BAG(B) VINYL,160.0x280.0x0.03t MANUAL 1
POL-31-004A0 POLY BAG(C) VINYL,80.0x100.0x0.03t ACCESSORY 1
POL-31-002A0 POLY BAG(D) VINYL,230.0x350.0x0.03t MANUAL 1
INN-42-533A0 SNOW PAD(L),(R) EPS,378.0x150.0x131.0 2
BOX-36-573AA GIFT BOX SW#1(B )577.0x383.0x136.0 1
BOX-39-575BA CARTON BOX DW#2,592.0x292.0x408.0 1/2
MAN-01-0052A MANUAL 1
SUB-00-001A0 SILICAGEL 3g 1
LAB-SR-0064A SERIAL NO 3 1
SUB-00-002A0 SCOTCH TAPE 20mm SET 5cm
SUB-00-003A0 OPP TAPE 2.3m
LAB-00-0227A STICKER "MADE IN KOREA" 9 1
LAB-QC-0001A STICKER QC LABEL 1
LAB-00-0165A STICKER WINDOW STICKER SET 1
CAR-WA-0032A WARRANTYCARD 1
SUP-21-006A0 LED GUIDE ABS,L=12mm LED 3
CAR-00-0233A E-1 STICKER ART PAPER 2
LAB-CE-0004A CE STICKER ART PAPER 2
CAR-00-0100A CERTIFICATESHEET 1
COV-22-549A0 LENS (WITHOUT SILKSCREEN) ACRYLIC 1

Power Amplifier
PX300.4

Ref# Description Part Number Qty
01 HEAT SINK MAIN AL/EXTRUSION (L=430mm) HEA-01-574A0 1
02 FRONT PANEL EGI 1.2T PAN-06-561A0 1
03 REAR PANEL EGI 1.2T PAN-06-564A0 1
04 WINDOW ACRYLIC 4.0T COV-22-623B0 1
05 BADGE AL BAD-01-515A0 1
06 MOUNTING FOOT ADC-7 DIE CASTING FOO-01-504B0 2
07 LENS, ACRYLIC (WITH SILKSCREEN) COV-22-549AA 1
LENS, ACRYLIC (WITHOUT SILKSCREEN) COV-22-549A0 1
08 INDICATOR ACRYLIC (CLEAR) ILL-22-503A0 3
09 BRACKET TR(A) CR,91 X 15 X 1.5T (NI-P) BKT-05-521A0 2
10 BRACKET TR(B) CR,103 X 15 X 1.5T (NI-P) BKT-05-521A0 2
11 CUSHION BKT-TR(A) FIBER 87 X 15 X 0.5T SUB-28-573A0 2
12 CUSHION BKT-TR(B) FIBER 99 X 15 X 0.5T SUB-28-574A0 2
13 CUSHION RUBBER (A) 12 X 7 X 1.6T SUB-33-513A0 5
14 SILICON PAD (SP1000) 22 X 0.3T SIL-34-001A0
15 SUPPORT PCB NYLON L=4.5mm SUP-29-502A0 6
16 SWITCH DECAL FELT 12 X 7 X 0.3T SUB-27-524A0 6
17 TUBE 5 X 40mm SUB-12-576A0 3
18 SCREW STT2 BH 3 X 12 NI-P SC5-NB-30120 6
19 SCREW STT2 BH 3 X 8 BK SC5-BB-30080 17
20 SCREW SML 3 X 6 NI (NO SERRATION) SC1-NL-30060 8
21 SCREW SML 4 X 10 NI-P SC1-NL-40100 10
22 SCREW STT1 PH 4 X 25 BK SC4-BP-40250 12

71 2 3 4 5 6 8
A
B
C
D
E

71 2 3 4 5 6 8
A
B
C
D
E
PX300.4

71 2 3 4 5 6 8
A
B
C
D
E