PS Series PS28 Subwoofer SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr.
PS series PS28 subwoofer - CONTENTS - BASIC SPECIFICATIONS …………………..……………..1 DETAILED SPECIFICATIONS…………………..……….…..2 PACKAGING……………….……………………….…....….…4 CONTROLS AND CONNECTIONS…………..…….………..5 OPERATION….……………………………………………..….7 EXPLODED VIEW/PARTS LIST …………….….…....……8 TEST SET UP AND PROCEDURE………………..…....……9 BLOCK DIAGRAM…………………………..………….…..…10 TROUBLESHOOTING FLOW CHART………………..........12 ELECTRICAL PARTS LIST (120v) ………………………….13 PCB DRAWINGS……………….……………………………..17 SEMICONDUCTOR PINOUTS……….……………….
PS series PS28 subwoofer INFINITY PRIMUS PS28 150W Powered Sub/ Plate Amp LINE VOLTAGE US 120VAC/60Hz Europe 220-240VAC, 50-60Hz Yes/No Yes Yes Hi/Lo Line 108-132 220-230 Unit Vrms Vrms Specification Unit QA Test Limits Amp Section Type (Class AB, D, other) Type (Class AB, D, other) AB G AB G n/a n/a 120V model 230V Model Rated Load Impedance System average impedance Voice coil DCR Rated Output Power THD@ Rated Power THD @ 1 Watt DC Offset 4 8.79 4.35 100 0.5 0.
PS series PS28 subwoofer Parameter Turn-off Transient Specification Unit QA Test Limits 50 mV-peak 100 Conditions Notes @ Speaker Outputs AC Line cycled from ON to OFF Maximum allowable input power under nominal Input voltage and frequency, HOT or COLD operation. 100 Watts @ 4 Ohms nominal line voltage Efficiency Stand-by Input Power Power Cons.@rated power 12 195 Watts Watts 15 210 @ nom. line voltage @ nom.
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Primus PS28 (120V) OM 10/2/06 10:24 AM Page 4 PS series PS28 subwoofer CONTROLS AND CONNECTIONS Rear Panel ¡ Subwoofer-Level Control ™ Crossover Adjustment ® ¡ £ Phase Switch ¢ LFE Input ™ ∞ Line-Level Inputs § Power Switch £ ¢ ∞ § FUSE T 2.
Primus PS28 (120V) OM 10/2/06 10:24 AM Page 5 PS series PS28 subwoofer SUBWOOFER CONNECTIONS CHOOSE THE SUBWOOFER CONNECTION THAT IS MOST SUITABLE FOR YOUR RECEIVER/PROCESSOR If you have a Dolby® Digital or DTS® receiver/processor with a low-frequency effects (LFE) or subwoofer output: SUBWOOFER OR LFE OUTPUT If your receiver/processor does not contain a Dolby Digital or DTS processor but has a subwoofer output: RECEIVER/PROCESSOR L R NOTE: Some receivers have one subwoofer output.
Primus PS28 (120V) OM 10/2/06 10:24 AM Page 6 PS series PS28 subwoofer OPERATION Power On Crossover Adjustments Plug your subwoofer’s AC cord into a wall outlet. Do not use the outlets on the back of the receiver. The Crossover Adjustment Control ™ determines the highest frequency at which the subwoofer reproduces sounds. If your main speakers can comfortably reproduce some low-frequency sounds, set this control to a lower frequency setting, between 50Hz and 100Hz.
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PS series PS28 subwoofer PS28 Test Set Up and Procedure SYSTEM AURAL SWEEP TEST Equipment needed: • Function/signal generator/sweep generator • Integrated Amplifier • Multimeter • Speaker cables General Unit Function (UUT = Unit Under Test) Switches/knobs on the amplifier faceplate: Low Pass Frequency Adjust full CW (150Hz) Phase switch – either position 1. From the signal generator, Connect both right and left line level inputs (RCA) – not the LFE jack - to signal generator and UUT.
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PS series PS28 subwoofer PS28 Troubleshooting Flow Chart AMP no signal out no yes Check Fuse,Transformer, D110, etc DC voltage check ±Vcc yes yes no Check Q117,118,119,D109 etc Check+/-15VDC yes yes LED red LED light green or red LED light green Check,Q206,Q207,U203 etc yes yes Check U201 pin14 signal no Check U202 pin14 signal yes yes CheckU201,U202,VR201 VR202.
PS series PS28 subwoofer PS 28 (120v) Electrical Parts List Part Number Description Qty Reference Designator PREAMP PCB Resistors 110-14122j26-e 110-16102j26-e Resistor 1.
PS series PS28 subwoofer Part Number Description Qty Reference Designator POWER/MAIN PCB Resistors 110-14472j26-e 110-14681j26-e 110-16101j26-e 110-16102j26-e 110-16103j26-e 110-16105j26-e 110-16123j26-e 110-16152j26-e 110-16153j26-e 110-16154j26-e 110-16181j26-e 110-16182j26-e 110-16223j26-e 110-16332j26-e 110-16392j26-e 110-16393j26-e 110-16470j26-e 110-16471j26-e 110-16472j26-e 110-16473j26-e 110-16560j26-e 110-16563j26-e 110-16682j26-e 110-10821jk2-e 110-122r2j15-e 110-20331jk2-e 110-20331jk3-e 113-5
PS series PS28 subwoofer Part Number Description Qty Reference Designator POWER/MAIN PCB 192-027c1815gr-e 192-201d882y-e 192-202b772y-e 192-991d669a-e 192-992b649t-e 197-00kbl405-e 197-031n4148-e 197-101n4002-e transistor 2SC1815GR TOSHIBA(RoHS) NPN transistor KSD882Y (RoHS) PNP transistor KSB772Y (RoHS) PNP transistor HI-SINCERITY HSD669A (RoHS) NPN transistor HSB649T (RoHS) PNP diode 4A 500V KBL405 (RoHS) diode 100mA 75V SIGNAL 1N4148 ROHM (RoHS) diode 1N4002TB (RoHS) 2 1 1 1 1 1 1 1 Q101,Q115, Q117
PS series PS28 subwoofer Part Number Description Qty Reference Designator MISCELLANEOUS/MECHANICAL 123-14j70d-e 130-3f472md00-e 150-e8604107-e 1 1 1 154-u25006t0-e 155-520020-e 162-10151001-e 162-50652003-e 176-wjce1-e 180-prf1003s-e 302-AL-00406-1BDE 306-ABS-00177-0BAE 311-ABS-00028-0BAE 320-RUB-00033-0BAE 323-AL-00106-0BBE 333-EVA-00761-0BAE 333-EVA-00783-0BAE 333-EVA-00807-0BAE 333-EVA-00826-0BAE 333-EVA-00835-0BAE 335-NYL-05015-0BAE 337-CU-00101-0LAE 350-EM04012D024-E 351-AM03008A079-E 351-HM04016A
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