Infinity INTERMEZZO 1.2s Service Manual
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Infinity INTERMEZZO 1.2s Service Manual

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INTERMEZZO
1.2s Subwoofer
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 11797
REV 4 5/2005

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Summary of Contents for Infinity INTERMEZZO 1.2s

  • Page 1 INTERMEZZO 1.2s Subwoofer Service Manual Infinity Systems, Inc 250 Crossways Park Dr. Woodbury, New York 11797 REV 4 5/2005...

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS …………………………………………………….3 DETAILED SPECIFICATIONS …………………….…………………4 CONTROLS and CONNECTIONS …………………….….…………6 OPERATION………………………..……………………….…………10 MECHANICAL/PACKAGING PARTS LIST…………………………11 EXPLODED VIEW of INTERMEZZO 1.2s …………………………12 PACKAGING …………………………….………………………….…13 TEST SET UP AND PROCEDURE …………………………………14 BULLETIN INF2001-04…………………………………….…………15 IM 1.2s ADJUST BIAS PROCEDURE………………………………17 ELECTRICAL PARTS LIST ……………………………….…………18 PRINTED CIRCUIT BOARD DIAGRAMS………………..…………27 INTEGRATED CIRCUIT DIAGRAMS ………………………………34...

  • Page 3: Specifications

    (387mm x 464mm x 349mm) Weight: 60 lb (27.3kg) 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 4: Detailed Specifications

    INTERMEZZO 1.2s Detailed Specifications...
  • Page 5 INTERMEZZO 1.2s Detailed Specifications (Cont.)

  • Page 6: Controls And Connections

    INTERMEZZO 1.2s Controls and Connections...
  • Page 7 INTERMEZZO 1.2s Controls and Connections (Cont.)
  • Page 8 INTERMEZZO 1.2s Controls and Connections (Cont.)
  • Page 9 INTERMEZZO 1.2s Controls and Connections (Cont.)

  • Page 10: Operation

    INTERMEZZO 1.2s Operation The operation of the Intermezzo1.2s subwoofer with regards to the proper settings for the Room Adaptive Bass Optimization System, or R.A.B.O.S., is thoroughly covered in the Owner’s guide, part# 336204-001. For service purposes, the R.A.B.O.S. system is canceled when all three front panel controls (F) (L) (W) are turned fully Clockwise.

  • Page 11: Mechanical/Packaging Parts List

    INTERMEZZO 1.2s Mechanical/Packaging Parts List Ref No. Description Part Number MECHANICAL GASKET, REAR 331106-001 12” Woofer C.M.M.D. Shielded, DCR 7.6 ohms ±10%, 335036-001 RABOS ASSEMBLY 336202-001 SCREW, 8-32 x .5 BLK, MS,PPH (16) 900201-008 GRILLE CUP (14) 333249-003 Front BAFFLE 335270-001 SCREW, 6-32 x .5 BLK, MS,PPH (12)

  • Page 12: Exploded View Of Intermezzo 1.2S

    REMOVE THESE GRILLE CUPS SCREWS ONLY TO SERVICE THE INTERMEZZO 1.2s 1) Remove the grille and side panel. 2) Extract (8) of the rubber grille retainers shown in view A above; this can be accomplished by carefully pulling them out of the cavities with long-nosed pliers or similar tool.

  • Page 13: Packaging

    INTERMEZZO 1.2s Packaging View...

  • Page 14: Test Set Up And Procedure

    FROM AMPLIFIER The operation of the Intermezzo 1.2s subwoofer,and the proper settings for the Room Adaptive Bass Opitmization System, or R.A.B.O.S., is thoroughly covered in the Owner’s guide, part #336204-001. For service purposes, the R.A.B.O.S. system is canceled when all three front panel controls (F) (L) (W) are turned fully CW (Clockwise).

  • Page 15: Bulletin Inf2001-04

    Service Bulletin Service Bulletin INF2001-04 Rev2 – May 2005 Warranty labor rate: MINOR repair All Infinity Service Centers Model: Interlude and Intermezzo IL50, IL60, IL100s, IL120s, IM1.2s, IM4.1t Subject: No Output In the event you receive an Interlude or Intermezzo loudspeaker with the complaint: “There is no output, and the LED on the volume control does not light, red or green”, check the item listed below:...
  • Page 16 9) If it is 25 volts or greater, turn the amplifier OFF, disconnect from the power source, and replace: IL120S, IL60: Q504,Q507 IRF640 on the Power Supply PCB, Infinity part# QM0015. IL50, IL100s: Q1 IRF540 on the Power Supply PCB, Infinity part# QM0020.

  • Page 17: Im 1.2S Adjust Bias Procedure

    INTERMEZZO 1.2s IM 1.2s ADJUST BIAS PROCEDURE (Mandatory when any output MOSFET transistors Q305,310,320,321,306,307,311,312 are replaced) 1. Amplifier should be unplugged and OFF. 2. Remove Amp assembly from cabinet, following the instructions on Page 12. 3. Identify the Linear board assembly (PCB with the output transistors) 4.

  • Page 18: Electrical Parts List

    INTERMEZZO 1.2s Electrical Parts List Part# Reference Designator Description Linear Amplifier/Regulator Board Semiconductors DS0001 D301,D302,D303,D304,D305, RECT, 100mA 75V SIGNAL 1N4148T D306, D307,D308,D309,D310, D311,D312, D313,D314,D315, D316,D317,D318, D319,D320, D321,D323,D325,D330 DR0085 D324 RECT, 8A 400V TO220AC MUR860 QB0002 Q314,Q315,Q317 TRANS, NPN 40V .6A TO92 2N4401...
  • Page 19 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description CF0146 C361 CAP, F 6.8UF 250V 10% 27MMLS CC0059 C304 CAP, CA .1UF 100V 20% Resistors RC0004 R399 RES, CF 1M0 1/4W 5% RC0006 R349 RES, CF 10K 1/4W 5%...
  • Page 20 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description RC0229 R3103 RES, CF 200K 1/2W 5% RP0056 RP301,RP302 POT, 5K 8MM HOR TOP ADJ/COVER RW0022 R346,R347,R393,R394 RES, WW 0R1 2W 5% RC0006 R310 RES, CF 10K 1/4W 5% Miscellaneous...
  • Page 21 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description RX0046 R421 RES, MO 47K 1W 5% Capacitors CC0040 C409 CAP, CA 4700PF 100V 10% CC0087 C421 CAP, CA .01UF 100V 20% CE0013 C415,C416,C418 CAP, E 47UF 50V 20% 5MMLS...
  • Page 22 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description 480090 SUB, #18R 9 187X032/1/4STRP 480097 SUB, #18B 9 187X032/1/4STRP 540124 L501 IND, CHOKE CM 500103 T501 XFMR, 60HZ 24V 1.1VA 810088 MET, HTSNK 1X2 BRIDGE For D501 JH0008 J502 CNCTR, HEADER 5PIN .100CTR...
  • Page 23 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description RC0039 R165,R170,R173 RES, CF 2K2 1/4W 5% RC0083 R149,R150,R158 RES, CF 100K 1/4W 5% RC0111 R143,R148 RES, CF 680R 1/4W 5% RC0115 R167 RES, CF 47K 1/4W 5% RC0135 R168...
  • Page 24 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description Resistors RC0148 R210 RES, CF 10M 1/4W 5% RM0001 R207,R208 RES, MF 1K00 1/4W 1% RM0002 R200,R201,R214,R216,R220, RES, MF 10K0 1/4W 1% R225,R228, R229,R230, R233 RM0003 R219, R224 RES, MF 15K0 1/4W 1%...
  • Page 25 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description Miscellaneous 480033 SUB, #18R 4 1/4 187X032/187X032 1PC. IEC LIVE TO FUSE HOLDER; 1PC. FUSE HOLDER TO SWITCH; IPC. IEC NEUTRAL TO SWITCH 480104 SUB, #16X2 24 205X032/250X032 SPEAKER WIRE...
  • Page 26 INTERMEZZO 1.2s Electrical Parts List (Cont.) Part# Reference Designator Description HS0090 SCREW, M3X16MM PAN PHIL BLK TO ALIGN SR0041 HW0004 WASHER, SPLIT #6 ZNP TO MOUNT POWER SUPPLY AND LINEAR BOARD HW0040 WASHER, FLAT #8 NYLON 3/8 USED TO MOUNT U BRACKET TO ENCLOSURE MM0071 MISC, CUP GASKET INTERMEZZO 1.2...

  • Page 27: Printed Circuit Board Diagrams

    INTERMEZZO 1.2s AC Filter...
  • Page 28 INTERMEZZO 1.2s Feature...
  • Page 29 INTERMEZZO 1.2s RABOS...
  • Page 30 INTERMEZZO 1.2s Power Supply...
  • Page 31 INTERMEZZO 1.2s Linear Board...
  • Page 32 INTERMEZZO 1.2s Power Supply...
  • Page 33 INTERMEZZO 1.2s Linear Board...

  • Page 34: Integrated Circuit Diagrams

    INTERMEZZO 1.2s Integrated Circuit Diagrams -5V TO220, 7905CT, REGULATOR TRANS, 250V U303, 502 TO220,TIP47 Q319 1. GROUND 2. INPUT 3. OUTPUT +5V TO220, 7805CT JFET, J111, REGULATOR B C E Q100,101,103,201, U302, 501 202, 205, 301 FOTO, MOC3012, 4N35 1. D 1.

  • Page 35: Schematics

    Intermezzo 1.2s Schematics...
  • Page 36 Intermezzo 1.2s Schematics...
  • Page 37 Intermezzo 1.2s Schematics...
  • Page 38 Intermezzo 1.2s Schematics...
  • Page 39 Intermezzo 1.2s Schematics...
  • Page 40 Intermezzo 1.2s Schematics & RABOS Gain PCB...
  • Page 42 Intermezzo 1.2s Schematics...

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