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JBL DPS-12 Service Manual

Summary of DPS-12

  • 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

    Safety information warning caution leakage/resistance check list of safety components requiring exact replacements (all parts power amp pcb except tr2) rev0 rev1 (rev0) only) (rev0) only) 2 amplifier/subwoofer psw-d110/dps-10 warning! Do not this unit does not have a power switch. Hazardous voltages...

  • Page 3

    3 amplifier/subwoofer psw-d112/dps-12 table of contents safety information .......................................................2 table of contents.........................................................3 general specifications ...............................................3 detailed specificati...

  • Page 4

    Detailed specifications line voltage yes/no hi/lo line nom. Unit notes us 120vac/60hz yes 108-132 120 vrms normal operation eu 230vac/50-60hz yes 207-264 230 vrms normal operation, moms required parameter specification unit test limits conditions notes amp section type (class ab, d, other) d n/a cla...

  • Page 5

    Limiter (yes/no) yes thd at max. Output power 10 % functional ck. Maximum output power maximum thd as a result of limiting. Features phase switch (yes/no) yes — functional ck. Volume pot taper (lin/log) log — functional ck. Input configuration — line in (l,c,r,ac3,mono) l,r,c — functional ck.. Enabl...

  • Page 6

    1. Power led - will illuminate when the unit is turned on with the main power switch. This light will be red when the unit is plugged in and not receiving a signal; when the psw-d112 receives a signal, the light will cycle to green. If no signal is received after 10 – 15 minutes the light will cycle...

  • Page 7

    Operation high-pass control if you hooked up your subwoofer as shown in speaker connection 4 on page 9. You also have the capability of adjusting the high-pass frequency. The high-pass control determines the frequency at which the main speaker will start reproducing sounds. If your main speakers can...

  • Page 8

    Speaker connections 1) if your receiver/amplifier has no subwoofer outputs or preamp outputs for the left, center and right channels. See figure 1. 2) if your receiver/amplifier has subwoofer outputs or preamp output jacks for the left and right channels. See figure 2. 8 amplifier/subwoofer psw-d112...

  • Page 9

    If your receiver/amplifier has a single (mono) subwoofer output or lfe output, connect the output using a “y”-connector (not included) to both left or right line-level inputs on the subwoofer. Plug the single male end of the “y” connector into the receiver/amplifier, and connect the 2 interconnect c...

  • Page 10

    Receiver/amplifier is on and a source is playing. Powered subwoofer is plugged in. Check all wires and connections between receiver/amplifier and speakers. Make sure all wires are connected. Make sure none of the speaker wires are frayed, cut or punctured. Review proper operation of your receiver/am...

  • 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

    2 2 amplifier/subwoofer psw-d112/dps-12 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 13

    2 3 amplifier/subwoofer psw-d112/dps-12 - 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 14

    2 4 amplifier/subwoofer psw-d112/dps-12 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 15

    Preamp board w w w capacitors resistors w w w w w w w w w w w w w w w w w w w w w w w w w w w diodes transistors integrated circuit poweramp board capacitors diodes semiconductors 2 5 amplifier/subwoofer psw-d112/dps-12 ref. # part number description qty ref. # part number description qty.

  • Page 16

    Resistors safetyinductors high level input/outputboard capacitors resistors miscellaneous revisions date issue details 2 6 amplifier/subwoofer psw-d112/dps-12 ref.# partnumber description qty ref.# partnumber description q t y.

  • Page 17

    Psw-d112/dps-12 electrical parts list rev1 pcb poweramp board capacitors diodes resistors integrated circuit transistors miscellaneous 2 7 revisions/changes psw-d112 power amp pcb designator early rev later rev r5 43.2k 56.2k r6 4.7 47 r15 100k none r34 4.7k 10k res addition none 220k - solder from ...

  • Page 18

    Preamp board capacitors integrated circuits resistors w w w w w w w w w w w w w w miscellaneous w.

  • Page 19

    2 9 amplifier/subwoofer psw-d112/dps-12 lm324 tl064) quad op amp (tlo 82) dual op amp 1 5 2 6 3 7 4 14 10 13 9 12 8 11 1 2 4 3 - - - - + + + + 2 base 3 collector 1 emitter 1 2 3 q4, q5, q10, q11 tr1 2 base 2 base 3 collector 3 collector 1 emitter 1 emitter 1 1 2 2 3 3 q3 q12 tr2 - power amp module s...

  • Page 21

    3 1 amplifier/subwoofer psw-d112/dps-12.

  • Page 22

    D1 - early revisions had two 30v diodes in series. For replacement use single diode part# 50114.

  • Page 23

    33 amplifier/subwoofer psw-d112/dps-12 schematic preamp rev1 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 24

    34 amplifier/subwoofer psw-d112/dps-12 pwramp rev1.0 schematic 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 25

    3 5 amplifier/subwoofer psw-d112/dps-12 schematic pwramp rev1.1 5 5 4 4 3 3 2 2 1 1 a a b b c c d d e e f f g g.