Infinity Modulus MSW-1 Service Manual
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Infinity Modulus MSW-1 Service Manual

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Modulus ®
MSW-1 Subwoofer
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 11797
REV 5 11/2002

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Summary of Contents for Infinity Modulus MSW-1

  • Page 1 Modulus ® MSW-1 Subwoofer Service Manual Infinity Systems, Inc 250 Crossways Park Dr. Woodbury, New York 11797 REV 5 11/2002...

  • Page 2: Table Of Contents

    (419mm x 368mm x 489mm) Weight: 42 lb (19.1kg) Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice.

  • Page 3: Detailed Specifications

    MSW-1 DETAILED SPECIFICATIONS...
  • Page 4 MSW-1 DETAILED SPECIFICATIONS (Cont.)

  • Page 5: Controls

    MSW-1 CONTROLS...

  • Page 6: Connections

    MSW-1 CONNECTIONS...

  • Page 7: Operation

    NOTICE instructions to ensure that the subwoofer output is turned on and The operation of the Modulus MSW-1 Home Theater System that the speakers are set to “Small” in each mode. regarding the proper settings for the Room Adaptive Bass Optimization System, or R.A.B.O.S., is thoroughly covered in the...

  • Page 8: Mechanical/Packing Parts List

    MSW-1 MECHANICAL/PACKAGING PARTS LIST Item Number Description Part Number MECHANICAL CABINET (CHARCOAL OR PLATINUM) Not for Sale SCREW, (3) 905401-006 6-19x .375, MS, PPH, H/L, BLK VOLUME CONTROL PCB 336787-001 12” WOOFER C.M.M.D.,SHIELDED, DCR = 3.4Ω ±10% 336786-001 FRONT BAFFLE (Charcoal) 336771-002 (Platinum)

  • Page 9: Exploded View

    MSW-1 EXPLODED VIEW TO SERVICE THE MSW-1 SUBWOOFER 1) Remove the grille. 2) Extract (6) rubber grille retainers as shown in the illustration above, this can be accomplished by carefully pulling them out of the cavities with long-nosed pliers or similar tool.

  • Page 10: Packaging

    MSW-1 PACKAGING...

  • Page 11: Exploded View Of Amplifier

    MSW-1 EXPLODED VIEW OF AMP Switch-SPDT TOGGLE (4) Dual RCA jacks- SR0007 JC0049 AMP COVER 930050 High Level Binding Posts-JC0070 (set of 8 cluster) REMOVE THESE SCREWS TO SEPARATE REAR COVER FROM AMP PLATE AC SOCKET JC0129 FUSE HOLDER FH0012 FUSE 3A 1.25 x .25 FS0022 POWER SWITCH...

  • Page 12: Test Setup And Procedure

    MSW-1 TEST SETUP and PROCEDURE AC VOLT METER (10V) MODULUS MSW-1 UNDER TEST SIGNAL AMPLIFIER GENERATOR ® OUTPUT FROM GENERATOR/AMPLIFIER ® 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: Input Select to "Line"...

  • Page 13: Service Bulletin Inf2002-01

    Model: Modulus MSW-1 Subwoofer Subject: No Output In the event you receive a Modulus MSW-1 subwoofer with the complaint: “There is no output, and the LED on the volume control does not light, red or green”, check the items listed below: Check the 3A line fuse to make sure it’s not open.

  • Page 14: Service Bulletin Inf2002-06

    Model: Modulus Subwoofer MSW-1 Subject: Reliability Upgrade PURPOSE: Improve reliability of the Modulus MSW-1 subwoofer amplifier; this procedure should be followed for every unit that has to be serviced, for any reason. PLEASE READ FIRST BEFORE ORDERING PARTS OR SERVICING THE AMPLIFIER.
  • Page 15 0.1 ohm 2W 5% Metal film, not wire wound. If not order Infinity Part# RX0109 Ensure that Q6 is MPS A92 PNP TO92 MPSA92TR. If not order Infinity Part # QB0014 Ensure that R22 is 100K, 1/2 watt part. (Color Code - Brown, Black, Yellow and Gold), RES, CF 100K 1/2W 5%.
  • Page 16 10. Remove current meter; insert shorting plug back in terminal J7. 11. Replace cover (if present), wires if disconnected, and replace amplifier back into cabinet. Location for Bias pots Infinity Systems Inc. 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400...
  • Page 17 FIGURE 1 POWER SUPPLY BOARD UPGRADE FIGURE 2 LINEAR BOARD UPGRADE (Most components absent for clarity) Infinity Systems Inc. 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400...
  • Page 18 Needs Reliability No Label Follow Steps Outlined Above MSW-1 Upgrade Small White Rectangular label Modulus Modified by factory NONE REQUIRED On Amp faceplate MSW-1 “Rev II 2002-XXX” Infinity Systems Inc. 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400...

  • Page 19: Msw-1 Adjust Bias Procedure

    MSW-1 ADJUST BIAS PROCEDURE (Mandatory when any output MOSFET transistors Q3,4,7,8 are replaced) 1. Amplifier should be unplugged and OFF. 2. Remove Amp assembly from cabinet; remove rear plastic cover if present. All wires exiting the cover can remain connected unless they will prevent you from removing the amplifier or accessing potentiometers on the Linear board PCB in the following steps.

  • Page 20: Printed Circuit Board Diagrams

    MSW-1 300W HC BASH Power Supply 230V/120V / Volume Right Board...
  • Page 21 MSW-1 HC BASH 300W EM BOARD/IL RABOS BOARD...
  • Page 22 MSW-1 IL FEATURE BOARD/HI LEVEL BOARD...
  • Page 23 MSW-1 HC BASH 300W LINEAR BOARD...

  • Page 24: Electrical Parts List (120V)

    MSW-1 ELECTRICAL PARTS LIST Part# Reference Designator Description PCB, FEATURE MAIN SEMICONDUCTORS UA0003 U5,U6 OPAMP, QUAD 14PIN DIL LM324N UA0009 U1,U2 OPAMP, QUAD 14P DIL TL074/084 QM0035 JFET, N-CH J111 TO92 TR DS0001 D9,D100,D101,D102,D103,D104, RECT, 100mA 75V SIGNAL 1N4148T D105,D200,D201 DZ0002 Z200 ZENER, 500mW 12V 5% 1N5242B...
  • Page 25 MSW-1 ELECTRICAL PARTS LIST (Cont.) Part# Reference Designator Description RM0144 RES, MF 47K5 1/4W 1% RM0156 R108 RES, MF 392K 1/4W 1% RM0163 R28,R29 RES, MF 2K80 1/4W 1% RM0165 RES, MF 24K9 1/4W 1% RM0171 R31,R203 RES, MF 475K 1/4W 1% RM0188 R106 RES, MF 499R 1/4W 1%...
  • Page 26 MSW-1 ELECTRICAL PARTS LIST (Cont.) Part# Reference Designator Description RESISTORS RC0273 R19,R20,R35,R36 RES, ZERO OHM 1/4W RM0001 R12,R13,R14,R15,R28,R29,R30,R31 RES, MF 1K00 1/4W 1% RM0002 R1,R2,R5,R6,R22,R38,R41,R42 RES, MF 10K0 1/4W 1% RM0021 R7,R8,R23,R24 RES, MF 1K82 1/4W 1% RM0024 R17,R18,R33,R34 RES, MF 2K21 1/4W 1% RM0027 R21,R37 RES, MF 33K2 1/4W 1%...
  • Page 27 MSW-1 ELECTRICAL PARTS LIST (Cont.) Part# Reference Designator Description CE0013 C12,C13 CAP, E 47UF 50V 20% 5MMLS CE0098 CAP, E 22UF 50V 20% 5X11 5MMLS CF0019 C8,C9 CAP, F 4700PF 100V 5% 5MMLS CF0151 C21,C22,C24,C25 CAP, F .1UF 250V 10% 5MMLS CC0130 CAP, CY1 4700PF 250V 20% .4LS CE0040...
  • Page 28 MSW-1 ELECTRICAL PARTS LIST (Cont.) Part# Reference Designator Description PCB, EMI FILTER DB0009 RECT, 6A 400V BRIDGE CF0057 C1,C2 CAP, FX .22UF 250V 10% RC0004 RES, CF 1M0 1/4W 5% 540124 IND, CM CHOKE YT7271 KV0001 VARISTOR, 275V 100J .6W 480007 J5,J6,J8 SUB, #18B 4 187X032/1/4 STRP...
  • Page 29 MSW-1 ELECTRICAL PARTS LIST (Cont.) Part# Reference Designator Description RM0281 R7,R12 RES, MF 6K04 1/4W 1% RM0304 RES, MF 7K87 1/4W 1% RM0315 RES, MF 2K67 1/4W 1% RM0321 RES, MF 1K27 1/4W 1% RM0369 R6,R11 RES, MF 340R 1/4W 1% RM0370 RES, MF 9K31 1/4W 1% RM0377...
  • Page 30 MS0005 SILPAD, .009 .3C/W TO3P 3PER USED ON MAI BOARD; 4PER USED ON THE LINEAR BOARD MSW-1 PANEL MODULUS MSW-1 PANEL COMPLETE MZ0003 STANDOFF, 6-32 3/8 ROUND AL USED ON THE MAIN BOARD MZ0030 STANDOFF, 3/8 NYLON 3PC USED ON 600078 BOARD;...

  • Page 31: Integrated Circuit Diagrams

    MSW-1 INTEGRATED CIRCUIT DIAGRAMS JFET, J111, J113, Q5, Q9 1. D U1 HYBRID IC TRANS, PNP, 150V, 0.6A, 2. S 2N5401TR, 2N4401 3. G Q1, Q5, Q3 TRANS, NPN, 150V, 0.6A 2N5551TR, MPSA92TR, Q2, Q6, Q6 +15V, LM7815CT -15V, LM7915CT REGULATOR MOSFET, REGULATOR...

  • Page 32: Msw-1 Schematics

    MSW-1 LINEAR PCB...
  • Page 33 MSW-1 VOLUME /LC HI LEVEL/OPTIONAL BALANCE 250W AC-DC and EMI...
  • Page 34 MSW-1 FEATURE MAIN BOARD...
  • Page 35 MSW-1 FEATURE HOUSEKEEPING...
  • Page 36 MSW-1 FEATURE RABOS...
  • Page 37 MSW-1 POWER SUPPLY...

Table of Contents