JBL PSW-D112 Service Manual Download Page 11 | Manualshive

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NOTE: When testing the PSW-D112/DPS-12 amplifier, a load must always be connected to the
output terminals, whether the woofer, or a 4 to 8 ohm resistive load.

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Summary of Contents for PSW-D112

Page 1: ...JBL Consumer Products Inc 250 Crossways Park Drive Woodbury N Y 11797 1 800 336 4JBL in the USA A Harman International Company Rev E 7 2001 PSW D112 DPS 12 Powered Subwoofer SERVICE MANUAL...

Page 2: ...ormed by qualified service personal ONLY Before returning the unit to the customer perform a leakage or resistance test as follows Leakage Current Note there is no power switch on this unit When the p...

Page 3: ...Power RMS 250 watts Driver 12 High Polymer Laminate Inputs Line Level and Speaker Level Outputs Line Level and Speaker Level Low Pass Frequency Continuously variable from 60Hz 180Hz High Pass Frequenc...

Page 4: ...er Vol Max 1 input driven AP source Z 600 ohms Speaker Hi Level Input 9 3 Vrms 2dB To Rated Power Vol Max 1 input driven AP source Z 25 ohms Signal to Noise SNR A Weighted 100 dBA 90 Relative to rated...

Page 5: ...ignal Signal Present Input Freq 100 Hz Nominal 200uF Series Cap on PCB Signal Present Level 2 mV 100Hz into Line Input w 1 ch driven Signal Present Bandwidth 1k Hz Signal Present LPF for noise immunit...

Page 6: ...ks 6 Speak Out Jacks Connected to main loudspeakers when the Speaker Input Jacks are used 7 Phase Switch Changes the subwoofer s output to be in phase or 180 degrees out of phase with the program mate...

Page 7: ...low pass and high pass controls may evolve over several listening sessions A good starting point would be to set both the low and high pass controls to the same frequency and adjust from that point L...

Page 8: ...of the PSW D112 DPS 12 is shown in these illustrations which has Center channel input and output connectors Rev1 version is missing these along with the Direct Out RCA connector 60 90 150 180 120 60...

Page 9: ...t jacks for the left and right channels or you have a separate pre amp processor and power amplifier See Figure 4 This method of hookup can offer the highest level of performance for your complete lou...

Page 10: ...Switch to the opposite position n If you are using a Dolby Digital DTS receiver or processor make sure that the subwoofer adjustments on the receiver processor are set up correctly n Slowly turn the...

Page 11: ...NOTE When testing the PSW D112 DPS 12 amplifier a load must always be connected to the output terminals whether the woofer or a 4 to 8 ohm resistive load...

Page 12: ...FR I P GND 15V And V GND GND GND GND V GND GND GND GND Should be Reading 6 2V 90 1V 0V 90 1V 15 5V 5 75V 0V 0V 0V 15 5V 4 Check Switching Frequency Use scope EITHER USES AN ISOLATION TRANSFORMER OR A...

Page 13: ...ass Pot Setting Output CW 12 2V CCW 1 2V 4 High Pass Set up Set Generator at 100mV 100Hz Signal to Low level input Measure voltage at high pass output Voltage measurement High Pass Pot Setting Output...

Page 14: ...1 4 Amplifier Subwoofer PSW D112 DPS 12 PSW D112 DPS 12 POWER AMP MODULE TESTING FLOW CHART REV0 ONLY...

Page 15: ...te 3 Remove amplifier assembly you should be able to remove the amplifier far enough out of the cabinet to service it without removing the woofer wires 4 Locate the Power Amp Module it is the large gr...

Page 16: ...e the ribbon cable connector between the premamp PCB and the main PCB See illustration 5 Desolder the connection on that cable where the cable attaches to the premamp PCB to access you may have to car...

Page 17: ...T NOT FOR SALE 12 WOOFER 200700 AMPLIFIER ASSEMBLY SCREWS 12 SCREWS 8 FOOT PART 1 200670 FOOT PART 2 200870 CABINET NOT FOR SALE 12 WOOFER 200700 AMPLIFIER ASSEMBLY DPS 12 CABINET ASSEMBLY PSW D112 CA...

Page 18: ...r PSW D112 DPS 12 AMPLIFIER EXPLODED VIEW 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G PSW D112 DPS 12 Rev0 PSW D112 shown here Amplifier Assembly Exploded View shown here 13 14 12 17 15 11 6 1 9 7...

Page 19: ...10 x 1 Screw machine screw Bolts for transformer 4 per unit 8 70172 10 keps Nuts for transformer 4 per unit 4 9 70173 6 x 0 5 Screws for fuse PCB 2per unit 2 10 80116 Transformer 4632 Safety part 1 1...

Page 20: ...L 200730 120V 331993 001 WARRANTY CARD 331993 001 OWNER S MANUAL 200830 120V TOP FOAM PAD 200722 TOP STYROFOAM RAILS 2 PER BOX 200821 PSW D112 DPS 12 BOTTOM FOAM PAD 200721 BOTTOM STYROFOAM RAILS 2 PE...

Page 21: ...2 1 Amplifier Subwoofer PSW D112 DPS 12 PSW D112 DPS 12 Rev0 PCB Component Side Rev0 Component Side Trace Layer 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G...

Page 22: ...2 2 Amplifier Subwoofer PSW D112 DPS 12 PSW D112 DPS 12 Rev0 PCB Solder Side Rev0 Solder Side Trace Layer as viewed through the board 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G...

Page 23: ...2 3 Amplifier Subwoofer PSW D112 DPS 12 Rev1 Component Side Trace Layer 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G PSW D112 DPS 12 PCB Component Side PREAMP Rev1 PWRAMP Rev1...

Page 24: ...2 4 Amplifier Subwoofer PSW D112 DPS 12 Rev1 Solder Side Trace Layer as viewed through the board 5 5 4 4 3 3 2 2 1 1 A A B B C C D D E E F F G G PSW D112 DPS 12 PCB Solder Side PREAMP Rev1 PWRAMP Rev1...

Page 25: ...ilm 1 R24 40408 8 45kW 0 25W 1 metal film 1 R25 40455 169kW 0 25W 1 metal film 1 R27 40434 38 3kW 0 25W 1 metal film 1 R28 40456 2 7kW 0 25W 5 carbon film 1 R32 40403 10kW 0 25W 1 metal film 1 R33 34...

Page 26: ...on DPS 12 2 pcs on PSW D112 2 70312 Faceplate PSW D112 2 70311 Faceplate DPS 12 3 70316 Amp PCB support 4 70150 Phase switch 1 also DPS 12 Video Contour switch 5 70151 Power switch Safety part 6 70170...

Page 27: ...l 25W 0 05 carbon 1 R26 40713 5 6 400 axial 25W 0 05 carbon 1 R27 30 40738 10k 600 axial 2W 0 05 carbon 2 R28 29 40739 1 2k 400 axial 25W 0 05 carbon 2 R33 40427 23 7k 400 axial 25W 0 01 metal 1 R34 4...

Page 28: ...axial 25W 0 05 carbon 1 R11 40749 75kW 400 axial 25W 0 05 carbon 1 R12 40504 45 3kW 400 axial 25W 0 01 metal 1 R13 40412 33 2kW 400 axial 25W 0 01 metal 1 R14 40709 68 1kW 400 axial 25W 0 01 metal 1...

Page 29: ...E OR MORE OF THESE STEPS MAY RESULT IN THE INSTANT DESTRUCTION OF THE MODULE WHEN POWERED UP Align white indent marker on Amp Module with indent marker on main PCB alternately observe position of labe...

Page 30: ...3 0 Amplifier Subwoofer PSW D112 DPS 12 PWS D112 DPS 12 SCHEMATIC 1 of 3 Rev0 Earlier revs value 38 3K 00471...

Page 31: ...3 1 Amplifier Subwoofer PSW D112 DPS 12 PWS D112 DPS 12 SCHEMATIC 2 of 3 Rev0...

Page 32: ...3 2 Amplifier Subwoofer PSW D112 DPS 12 PWS D112 DPS 12 SCHEMATIC 3 of 3 Rev0 Later revs value 47 ohms 00468...

Page 33: ...R18 6k8 R20 6k8 U1 20k Lin 1 20k Lin 2 U2 C10 100nF C12 100nF C13 100nF C11 100nF R21 Not Used R19 6k8 R22 6k8 R23 Not Used LP DEF Not Used 20k Lin 3 20k Lin 4 13 12 14 13 14 12 3 2 1 7 6 5 6 5 7 8 10...

Page 34: ...R11 1k Q11 2N5401 R13 47k R14 3k3 R12 1k Q12 2N3904 CZ 100nF CW 100nF SPNeg SPPos V V TRX MCI4632 CMC 2m2H C7A 100nF C7B 100nF R2B 7k5 C1 2200uF C2 2200uF FUSE 2A SloBlo AC Feed AC Return 9 8 10 R8A 1...

Page 35: ...0uH C10 4u7F C11 330nF R15 100k L3 8 5uH L4 8 5uH R10B 0 1R R10C 0 1R R10A 0 1R Q10 2N5401 R11 1k Q11 2N5401 R13 47k R14 3k3 R12 1k Q12 2N3904 CZ 100nF CW 100nF SPNeg SPPos V V TRX MCI4632 CMC 2m2H C7...

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