Infinity IL50 L Service Manual Download Page 1

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Interlude Series

IL50 L/R

Powered Loudspeaker

Service Manual

Infinity Systems, Inc

250 Crossways Park Dr.

Woodbury, New York 11797

REV10 10/2005

Summary of Contents for IL50 L

Page 1: ...Interlude Series IL50 L R Powered Loudspeaker Service Manual Infinity Systems Inc 250 Crossways Park Dr Woodbury New York 11797 REV10 10 2005...

Page 2: ...DED VIEW OF AMPLIFIER 14 SERVICE TIPS 15 SERVICE BULLETIN INF2002 02 16 SERVICE BULLETIN INF2001 04 17 SERVICE BULLETIN INF2002 05 19 TECH TIP INFTT2003 03 24 TEST SET UP PROCEDURE 25 IL50 ADJUST BIAS...

Page 3: ...ver Frequencies 150Hz 2500Hz 24dB octave Low Frequency Driver 10 C M M D magnetically shielded Mid Bass Driver 6 1 2 C M M D magnetically shielded High Frequency Driver 1 C M M D magnetically shielded...

Page 4: ...Detailed Specifications IL50 L R 4...

Page 5: ...IL50 L R 5 Detailed Specifications Cont...

Page 6: ...IL50 L R 6 Controls and Connections Cont...

Page 7: ...IL50 L R 7 Controls and Connections...

Page 8: ...IL50 L R 8 Controls and Connections Cont...

Page 9: ...IL50 L R 9 Controls and Connections Cont...

Page 10: ...IL50 L R 10 Operation Bass Optimization SystemTM...

Page 11: ...to perform a series of measurements and aids him her in properly setting the Bass Optimization System controls With the addition of this kit the Bass Optimization System becomes truly room adaptive Th...

Page 12: ...dified IL50 product w new port tube may be identified by the following serial number prefixes which appears on the amplifier faceplate and the carton barcode label IL50BLKL NM0825 01001 and above IL50...

Page 13: ...PH BLK 903401 012 GRILLE CUP 6 333249 003 GRILLE CUP 3 333249 003 GRILLE CUP 7 333249 003 BAFFLE 336163 001 R 336163 002 L VOLUME CONTROL ASS Y w CABLE 336250 001 R 336250 002 L ROTATED NETWORK 336476...

Page 14: ...IL50 L R 14 Exploded View of Amplifier 00277 Rear Plastic Cover 930050 High Level Binding Posts JC0104 Power Cord 15 FT WI0043 Feature PCB Linear PCB RABOS PCB Power Supply PCB EMI Filter PCB...

Page 15: ...IL50 L R 15 Service Tips...

Page 16: ...replace R22 with a 1 2 Watt 100k ohm 5 resistor 1 Remove the grille Lay the subwoofer on its face on a padded surface amplifier facing upwards 2 Remove the 10 Phillips screws around the outer perimete...

Page 17: ...icate a shorted MOSFET 5 Replace any defective parts above that show measured values lower than normal 6 Reconnect J505 or J6 multicolor ribbon cable connector remount the Power supply PCB reconnect J...

Page 18: ...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 10 If the voltage is normal tu...

Page 19: ...T SEC BLACK 1 Replaces 810091 810158 HEATSINK FET PRIMARY BLACK 1 Replaces 810092 810056 HEATSINK FET CLIP 9 x 5 x 2 1 Use with Q1 MS0017 MISC CERAMIC PLATE TO 220 CERAMIC INSULATOR 0 025 5 Use with Q...

Page 20: ...FETS ARE FLUSH AGAINST THE HEATSINK 15 Assemble the 810157 HTSNK FET SEC BLACK heat sink on side of three devices Q1 D1 D3 Install FET CLIP 810056 on Q1 not shown in illustration 2 LINEAR BOARD UPGRA...

Page 21: ...g 5 Remove shorting plug on terminal J7 on Linear board and insert current meter set to the low mA range 6 Verify initial current is less then 1 mA 7 Adjust R11 Clockwise until current meter reads 5 m...

Page 22: ...FIGURE 1 POWER SUPPLY BOARD UPGRADE FIGURE 2 LINEAR BOARD UPGRADE Most components absent for clarity 5 2 3 1 4 5 6 7 22 IL50...

Page 23: ...d Model Identification 120V STATUS ACTION IL50 No Label Needs Reliability Upgrade Follow Steps Outlined Above IL50 Small White Rectangular label On Amp faceplate Rev II 2002 XXX Modified by factory N...

Page 24: ...PCB has been damaged for the above models only 1 Change all MOSFETS even for one device failure 2 Clean and repair the PC board if required See Tech Tip HCG2002 01 Damaged Printed Circuit Boards 3 Re...

Page 25: ...ker Level input terminal on UUT Cables should be connected to an integrated amplifier fed by the signal generator 10 Switch Sub Input on the amplifier faceplate to Speaker 11 Turn on generator and adj...

Page 26: ...See diagram below 5 Apply 120 VAC power to unit Turn power switch ON 6 Verify LED illuminates on the front gain control dial unless you have disconnected the plug 7 Remove shorting plug on terminal J7...

Page 27: ...Packaging IL50 27...

Page 28: ...EMI Filter PCB IL50 28...

Page 29: ...Feature PCB IL50 29...

Page 30: ...IL50 L R Linear PCB 30...

Page 31: ...Volume Control PCB IL50 31...

Page 32: ...Power Supply PCB IL50 32...

Page 33: ...RABOS PCB IL50 33...

Page 34: ...IL50 Electronic Parts List Part Reference Designator Qty Description IL50 34...

Page 35: ...IL50 Electronic Parts List Cont Part Reference Designator Qty Description IL50 35...

Page 36: ...IL50 Electronic Parts List Cont Part Reference Designator Qty Description IL50 36...

Page 37: ...IL50 Electronic Parts List Cont Part Reference Designator Qty Description IL50 37 Change R22 to 100K ohm See Page 16...

Page 38: ...IL50 Electronic Parts List Cont Part Reference Designator Qty Description IL50 38...

Page 39: ...IL50 Electronic Parts List Cont Part Reference Designator Qty Description IL50 39...

Page 40: ...Integrated Circuit Diagrams IL50 40...

Page 41: ...Schematic C3 128uF 100V L2 0 30mH R1 10ohm 10w L1 1 8mH C2 10uF 100V WHT WHT BLK L4 0 075mH R2 1 80ohm 10w YEL 250 C5 20uF 100V YEL BLK L3 0 22mH C4 2 4uF 100V R3 0 5ohm 10w INPUT INPUT C1 470uF 100V...

Page 42: ...42 Change R22 to 100K ohm See Page 16...

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