Page 1
Interlude Series
IL120s Subwoofer
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 11797
REV 1 10/2001
Page 2
IL120s
CONTENTS
SPECIFICATIONS …….…………………………….………………….3
DETAILED SPECIFICATIONS ……………………..…………………4
CONTROLS and CONNECTIONS ………………….….….…………6
OPERATION……………………………………..……..…..…….……..8
BASS OPTIMIZATION SYSTEM…………….………….….…………9
MECHANICAL/PACKING PARTS LIST………………..……………11
EXPLODED VIEW ……………………………………….……………12
PACKAGING …………………………….………………………….…13
EXPLODED VIEW OF AMPLIFIER…………………….……………14
TEST SETUP and PROCEDURE……………….……..……………15
IL120s ADJUST BIAS PROCEDURE………………..…………………16
PRINTED CIRCUIT BOARD DIAGRAMS………………..…………17
ELECTRICAL PARTS LIST (120v)…………………….….…………23
INTEGRATED CIRCUIT DIAGRAMS ………………………………31
IL120s SCHEMATICS…………..……….……………………………32
Page 3
IL120s
3
SPECIFICATIONS
IL120s Frequency Response: 28Hz - 150Hz (±3dB)
Maximum Amplifier Output: 500 watts (20Hz - 150Hz with no more than 0.1% THD)
Crossover Frequencies: 50Hz - 150Hz, 24dB/octave, continuously variable
Driver: 12" C.M.M.D.
Dimensions (H x W x D): 17-1/2" x 17-1/4" x 19-3/4"
Weight: 45 lb (20.5kg)
Optional Accessory: Bass Optimization
Test & Measurement Kit:
Part Number: 335852-002
Page 4
DETAILED SPECIFICATIONS
IL120s
4
Page 5
IL120s
5
DETAILED SPECIFICATIONS (Cont.)
Page 6
IL120s
6
CONTROL and CONNECTIONS
Page 7
IL120s
7
CONNECTIONS
Page 8
IL120s
8
OPERATION
Page 9
IL120s
9
BASS OPTIMIZATION SYSTEM
TM
Page 10
IL120s
10
BASS OPTIMIZATION SYSTEMTM(Cont.)
plays the tones from the test CD and records the relative output level of each test tone, using the sound-level meter,
on the provided measurement template. After all the tones are complete, the template contains a response curve
for the frequencies below 100Hz. The user simply notes the frequency of the largest bass peak, calculates the correct amount of attenuation, and uses the “Q-Finder” to determine the width of the curve. These three values are
dialed into the Bass Optimization System controls located on the speaker. The entire process takes less than twenty minutes.
If your dealer does not stock the Bass Optimization System test and measurement kit, you may purchase it directly
from Infinity. U.S. residents can visit our Web site at www.infinitysystems.com or call 1-800-553-3332. Canadian
residents should contact their dealer or call 1-800-567-3275.
Ask for Infinity part number 335852-002.
Page 11
IL120s
11
MECHANICAL/PACKAGING PARTS LIST
MECHANICAL
IL120s COMPLETE AMPLIFIER ASSY N/A
WOOFER, 12”, C.M.M.D., shielded, 3.4 ohms ±10% 336056-001
VOLUME CONTROL, R-IL 336250-001
FRONT BAFFLE 336439-001
PORT TUBE 336799-001
GRILLE CUP (12) 333249-003
GRILLE, GRAY 336441-001
GRILLE, MIDNIGHT BLUE 336441-002
GRILLE, RICH BURGUNDY 336441-003
GRILLE, BLACK 336441-004
PACKAGING
OWNER’S MANUAL, IL100S/IL120S 335839-001
WARRANTY CARD 335841-001
SURVEY CARD 330033-001
CARTON 336497-001
FOOT (4) 334186-002
FOOT PAD (4) 334192-001
PAD, END, TOP 336496-001
PAD, END, BOTTOM 336496-002
GRILLE ASSEMBL Y See Options Above
POWER CORD, 120V US-15’ 336658-115
RABOS SCREW DRIVER 335848-002
Description Part Number
Page 12
IL120s
12
EXPLODED VIEW
CABINET
(NOT FOR SALE)
WOOFER, 12"
(336056-001)
VOLUME CONTROL, R-IL
(336250-001)
FRONT BAFFLE
(336439-001)
PORT TUBE
(336799-001)
GRILLE CUP (6)
(333249-003)
GRILLE CUP (6)
(333249-003)
GRILLE, GRAY 336441-001
GRILLE, MIDNIGHT BLUE 336441-002
GRILLE, RICH BURGUNDY 336441-003
GRILLE, BLACK 336441-004
FOOT (4)
(334186-002)
FOOT PAD (4)
(334192-001)
OO514
IL120s
AMPLIFIER ASSY
(NOT FOR SALE)
TO SERVICE THE IL120s 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.
3) Remove the ( 6) Phillips screws that are now exposed.
4) Remove the front baffle.
5) Remove the (6) screws that secure the driver.
6) To service the amplifier, remove the (12) Phillips screws at the rear of the enclosure, and pull the
amplifier out of the back.
SCREW, (2)
#6 x .75, PB, PPH, BLK
(903401-012)
SCREW, (6)
#6 x .75, PB, PPH, BLK
(903401-012)
SCREW, (12)
#8 x .75, PB, PPH BLK
(900101-012)
SCREW, (6)
#8 x .75, PB, PPH BLK
(900101-012)
SCREW,
#8 x 1, PB TRPH BLK
(903101-016)
Page 13
IL120s
13
PACKAGING
OWNER'S MANUAL
IL100S/IL120S
(335839-001)
WARRANTY CARD
(335841-001)
SURVEY
CARD
(330033-001)
POWER CORD,
120V US-15'
(336658-115)
RABOS SCREW
DRIVER
(335848-002)
GRILLE ASSEMBLY,
GRAY,
(336441-001)
PAD, END, TOP
(336496-001)
PAD, END, BOTTOM
(336496-002)
CARTON
(336497-001)
00513
Page 14
IL120s
14
EXPLODED VIEW OF AMPLIFIER
LINEAR
BOARD
FEATURE
BOARD
RABOS
BOARD
POWER
SUPPLY
BOARD
RCA
QUADJACK
(JC0052)
SWITCH, (4)
SPDT TOGGLE
(SR0007)
BINDING
POSTS GOLD
(JC0104)
FUSE HOLDER
PANEL MT SEALED
(FH0012)
FUSE, 4A 250V
1.25X.25 SLO-BLO
(FS0026)
AC (120V)
IEC SOCKET
(JC0129)
SWITCH,
ROCKER POWER
(SR0032)
FRONT VIEW
EMI
BOARD
®
®
O
00515
Page 15
IL120s
15
TEST SETUP and PROCEDURE
00516
SIGNAL
GENERATOR
AMPLIFIER
AC VOLT
METER (10V)
IL120s
UNDER TEST
OUTPUT
FROM
GENERATOR/AMPLIFIER
00345
®
®
O
R
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”
Low Pass Filter to OFF
Bass Optimization system to OFF
Low Pass Frequency Adjust full CW (150Hz)
Phase switch – either position
1. From the signal generator, Connect both right and left line level inputs (RCA) to signal generator and UUT. Use Y-cable if
necessary from mono source.
2. On the front of the unit, turn the LEVEL control full clockwise (0).
3. Turn on generator, adjust to 120mV, 30 Hz.
4. Plug in UUT; turn the power switch ON. LED should be Red. Turn LEVEL control full counterclockwise (10)
5. LED should now be Green; immediate bass response should be heard and felt from rear port tube opening.
6. Turn off generator, turn LEVEL control fully clockwise (0), disconnect RCAcable.
7. Connect one pair of speaker cables to Speaker Level input terminal on UUT. Cables should be connected to an integrated
amplifier fed by the signal generator.
8. Switch Input to “Speaker”.
9. Turn on generator and adjust so that speaker level input at the amplifier is 2.2V, 30 Hz. Turn LEVEL control full counter-
clockwise (10)
10. Green LED should light, immediate bass response should be heard and felt from the port tube opening.
Sweep Function
1. Follow steps 7-10 above, using a sweep generator as a signal source.
2. Sweep generator from 20Hz to 20kHz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If
any unusual noises are heard, remove woofer and test.
Driver Function (Woofer)
1. Remove woofer from cabinet; detach + and - wire clips. See page 12 for removal instructions.
2. Check DC resistance of woofer; it should be 3.4 ohms±10%.
3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal
generator. Turn on generator and adjust so that speaker level output is 5.0V.
4. Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
Page 16
IL120s ADJUST BIAS PROCEDURE
16
(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.
3. Locate the Linear board assembly (PCB with the output transistors)
4. Adjust R11 and R27 fully Counter Clockwise. 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. Connect voltmeter set to DC millivolt range to twin pins on terminal J7, on Linear board
8. Verify initial voltage is less then 0.1 mV.
9. Adjust R11 Clockwise until voltmeter reads 0.3 mV + the initial current from step #8.
10. Adjust R27 Clockwise until voltmeter now reads 0.6 mV + the initial current from step #8.
11. Turn amplifier OFF. Disconnect AC power to unit.
12. Remove voltmeter from terminal J7.
13. Replace cover (if present), wires if disconnected, and replace amplifier back into cabinet.
Page 17
IL120s
17
IL VOLUME RIGHT BOARD
Page 18
IL120s
18
EMI FILTER BOARD
Page 19
IL120s
19
IL FEATURE BOARD
Page 20
IL120s
20
IL RABOS BOARD
Page 21
IL120s
21
500W HC BASH POWER SUPPLY
Page 22
IL120s
22
IL 500W LINEAR BOARD
Page 23
IL120s
23
IL120s ELECTRONIC PARTS LIST
Part No. Reference Designator Qty Description
PCB, FEATURE
SEMICONDUCTORS
QM0035 Q5 1 JFET, N-CH J111 TO92 TR
UA0003 U5,U6 2 OPAMP, QUAD 14PIN DIL LM324N
UA0009 U1,U2 2 OPAMP, QUAD 14P DIL TL074/084
UA0010 U7 1 OPAMP, DUAL 8PIN DIL TL082
DS0001 D9,D100,D101,D102,D103, 9 RECT, 100mA 75V SIGNAL1N4148T
D104,D105, D200,D201
DZ0002 Z200 1 ZENER, 500mW 12V 5% 1N5242B
DZ0014 Z100 1 ZENER, 500MW 14V 5% 1N5244B
CAPACITORS
CC0020 C200 1 CAP, CA 470PF 100V 5%
CC0025 C203 1 CAP, CA 1000PF 100V 10%
CC0072 C1,C2,C4,C20,C100,C101 6 CAP, CA 100PF 100V 10%
CC0082 C201 1 CAP, CA .1UF 50V 20%
CE0013 C204 1 CAP, E 47UF 50V 20% 5MMLS
CE0101 C16,C19 2 CAP, E 4.7UF 50V 85D 5X11 5MML
CE0103 C102 1 CAP, E 100UF 35V 85DEG 5MMLS
CE0106 C5 1 CAP, E 22UF 35V BP 8X11 5MMLS
CE0108 C3 1 CAP, E 4.7UF 16V BIPOLAR 5X11
CF0045 C10,C11,C22,C23 4 CAP, F .1UF 63DC 5% 5MMLS
CF0078 C12,C13 2 CAP, F .47UF 63V 10% 5MMLS
CF0125 C6,C8 2 CAP, F .068UF 100V 5% 5MMLS
CF0128 C7,C9 2 CAP, F .033UF 100V 5% 5MMLS
RESISTORS
RC0001 R211 1 RES, CF 1K0 1/2W 5%
RC0192 R3,R7 2 RES, CF 2K0 1/2W 5%
RC0273 R20,R24,R33 3 RES, ZERO OHM 1/4W
RC0290 R206 1 RES, CF 9M1 1/4W 5%
RM0002 R12,R13,R37,R38,R39,R100,R101,R102, 10 RES, MF 10K0 1/4W 1%
R208,R209
RM0003 R16,R200,R210 3 RES, MF 15K0 1/4W 1%
RM0011 R1,R4,R5,R8,R103,R105,R201 7 RES, MF 100K 1/4W 1%
RM0012 R14,R15,R30 3 RES, MF 100R 1/4W 1%
RM0016 R104 1 RES, MF 13K0 1/4W 1%
RM0020 R28,R29 2 RES, MF 1K40 1/4W 1%
RM0024 R207 1 RES, MF 2K21 1/4W 1%
RM0031 R204 1 RES, MF 3K32 1/4W 1%
RM0075 R205 1 RES, MF 475R 1/4W 1%
RM0084 R76 1 RES, MF 1K65 1/4W 1%
RM0085 R107 1 RES, MF 2K00 1/4W 1%
RM0106 R26,R78 2 RES, MF 14K0 1/4W 1%
RM0120 R9,R10 2 RES, MF 30K1 1/4W 1%
RM0124 R11 1 RES, MF 39K2 1/4W 1%
RM0136 R202 1 RES, MF 150K 1/4W 1%
RM0156 R108 1 RES, MF 392K 1/4W 1%
Page 24
IL120s
24
IL120s ELECTRONIC PARTS LIST (Cont.)
Part No. Reference Designator Qty Description
RM0158 R27,R79 2 RES, MF 28K0 1/4W 1%
RM0171 R31,R203 2 RES, MF 475K 1/4W 1%
RM0188 R106 1 RES, MF 499R 1/4W 1%
RM0205 R17,R18,R22,R23,R32 5 RES, MF 22K6 1/4W 1%
RM0372 R35 1 RES, MF 5K76 1/4W 1%
RM0404 R2,R6 2 RES, MF 54R9 1/4W 1%
RP0105 R19 1 POT, B50K QUAD
MISCELLANEOUS
JC0052 J4 1 CNCTR, RCA QUAD JACK
JH0006 J9 1 CNCTR, HEADER 4PIN .100CTR
JH0008 J3 1 CNCTR, HEADER 5PIN .100CTR
JH0074 J7,J10 2 CNCTR, HEADER 8PIN LOCKING .1C
SR0007 S1,S2,S3,S4 4 SWITCH, SPDT TOGGLE C/W CAP PC
PCB, RABOS
SEMICONDUCTORS
UA0009 U1 1 OPAMP, QUAD 14P DILTL074/084
UA0010 U2 1 OPAMP, DUAL 8PIN DIL TL082
RESISTORS
RM0001 R24,R25,R33 3 RES, MF 1K00 1/4W 1%
RM0002 R1,R2,R4,R9,R14,R15,R21,R23 8 RES, MF 10K0 1/4W 1%
RM0003 R8,R13 2 RES, MF 15K0 1/4W 1%
RM0012 R3 1 RES, MF 100R 1/4W 1%
RM0024 R22 1 RES, MF 2K21 1/4W 1%
RM0042 R26 1 RES, MF 681R 1/4W 1%
RM0047 R31 1 RES, MF 909R 1/4W 1%
RM0080 R5,R10 2 RES, MF 825R 1/4W 1%
RM0106 R35 1 RES, MF 14K0 1/4W 1%
RM0170 R32 1 RES, MF 59K 1/4W 1%
RM0185 R34 1 RES, MF 5K90 1/4W 1%
RM0260 R36 1 RES, MF 1M0 1/4W 1%
RM0271 R19 1 RES, MF 110K 1/4W 1%
RM0281 R7,R12 2 RES, MF 6K04 1/4W 1%
RM0315 R17 1 RES, MF 2K67 1/4W 1%
RM0369 R6,R11 2 RES, MF 340R 1/4W 1%
RM0370 R18 1 RES, MF 9K31 1/4W 1%
RM0377 R16 1 RES, MF 3K57 1/4W 1%
RM0378 R20 1 RES, MF 549R 1/4W 1%
RM0398 R30 1 RES, MF 162R 1/4W 1%
RP0087 R27,R29 2 POT, A10K DUAL 12MM HOR 5%
RP0088 R28 1 POT, C10K DUAL 12MM HOR 5%
CAPACITORS
CF0045 C1,C2,C5 3 CAP, F .1UF 63DC 5% 5MMLS
CF0125 C3 1 CAP, F .068UF 100V 5% 5MMLS
CF0135 C4 1 CAP, F .18UF 50V 5% 5MMLS
Page 25
IL120s
25
IL120s ELECTRONIC PARTS LIST (Cont.)
Part No. Reference Designator Qty Description
MISCELLANEOUS
JH0074 J1 1 CNCTR, HEADER 8PIN LOCKING .1C
PCB, LINEAR
SEMICONDUCTORS
DS0001 D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11 11 RECT, 100mA 75V SIGNAL 1N4148T
QB0017 Q2,Q6 2 TRANS, NPN 150V 0.6A 2N5551TR
QB0018 Q1,Q5 2 TRANS, PNP 150V 0.6A 2N5401TR
QM0015 Q3,Q7 2 MOSFET, IRF640 TO220AB
QM0034 Q4,Q8 2 MOSFET, IRF9540 TO220AB
QM0054 Q9 1 JFET, N-CH J113 TO92
UA0009 U1 1 OPAMP, QUAD 14P DILTL074/084
UV0015 U2 1 VREG, +18V 500MALM7818CT
UV0016 U3 1 VREG, -18V 500MALM7918CT
DZ0011 Z1,Z2 2 ZENER, 500MW 3V 5% 1N5225B
RESISTORS
RM0001 R12,R13,R14,R15,R28,R29,R30,R31 8 RES, MF 1K00 1/4W 1%
RM0002 R1,R2,R5,R6 4 RES, MF 10K0 1/4W 1%
RM0021 R7,R8,R23,R24 4 RES, MF 1K82 1/4W 1%
RM0024 R17,R18,R33,R34 4 RES, MF 2K21 1/4W 1%
RM0029 R9,R10,R25,R26 4 RES, MF 3K01 1/4W 1%
RM0035 R41,R42 2 RES, MF 4K75 1/4W 1%
RM0039 R47 1 RES, MF 5K11 1/4W 1%
RM0091 R22,R38 2 RES, MF 3K65 1/4W 1%
RM0170 R21,R37 2 RES, MF 59K 1/4W 1%
RM0180 R16,R32 2 RES, MF 4K99 1/4W 1%
KS0019 R46 1 THERMISTOR, PTH9L04BD22TS2F510
RP0059 R11,R27 2 POT, 2K 8MM TOP ADJ/COVER
RW0022 R44,R45 2 RES, WW 0R1 2W 5%
RX0055 R39,R40 2 RES, MO 470R 2W 5%
CAPACITORS
CC0025 C15,C16,C17,C18 4 CAP, CA 1000PF 100V 10%
CC0080 C13,C14 2 CAP, CA 220P 100V 10%
CC0097 C4,C5 2 CAP, C 10P 50V 10%
CE0003 C6 1 CAP, E 2.2UF 50V 20% 105C
CE0013 C9,C10,C21,C22 4 CAP, E 47UF 50V 20% 5MMLS
CE0085 C19,C20 2 CAP, E 22UF 16V BP 6X11 5MMLS
CE0103 C11,C12 2 CAP, E 100UF 35V 85DEG 5MMLS
CE0116 C1 1 CAP, E 2.2UF 50V BP 6X11 5MMLS
CF0125 C3 1 CAP, F .068UF 100V 5% 5MMLS
CF0128 C2 1 CAP, F .033UF 100V 5% 5MMLS
CC0082 C7,C8 2 CAP, CA .1UF 50V 20%
Page 26
IL120s
26
IL120s ELECTRONIC PARTS LIST (Cont.)
Part No. Reference Designator Qty Description
MISCELLANEOUS
JH0016 J7 1 CNCTR, HEADER 2PIN .100CTR
JH0074 J13,J14 2 CNCTR, HEADER 8PIN LOCKING .1C
MM0025 J9,J10 2 MISC, PC MT SCREW TERM 6-32
MT0003 J1 1 TERM, FASTON MALE PCMT 250X032
MT0023 J3,J6 2 TERM, FASTON MALE PCMT 187X032
MT0036 J2 1 TERM, FASTON MALE PCMT 205X032
TS0016 6 TUBING, #5 BLACK CUT TO .3 USED ON
THE FETS
PCB, POWER SUPPLY
SEMICONDUCTORS
DR0077 D506,D507 2 RECT, 1A 100V FAST REC 1N4934
DS0001 D509,D510,D511 3 RECT, 100mA 75V SIGNAL 1N4148T
DS0002 D501,D502,D505 3 RECT, 100MA 200V SIGNAL1N3070
DD0003 D503 1 RECT, 1A2 60V DIAC
DR0076 D504 1 RECT, 16A 400V ULTRA MUR1640CT
DR0087 D508 1 RECT, 15A 200V ULTRA MUR1540
QB0002 Q505 1 TRANS, NPN 40V .6A TO92 2N4401
QB0014 Q503 1 TRANS, PNP TO92 MPSA92TR
QB0017 Q506 1 TRANS, NPN 150V 0.6A 2N5551TR
QM0015 Q504,Q507 2 MOSFET, IRF640 TO220AB
QM0055 Q501,Q502 2 MOSFET, IRF740 TO220AB IR ONLY
HC1011 U501 1 HYBRID, THK FILM HC BUCK CNTR
DZ0002 Z501,Z503 2 ZENER, 500mW 12V 5% 1N5242B
DZ0004 Z505 1 ZENER, 500mW 18V 5% 1N5248B
DZ0021 Z502,Z504 2 ZENER, 500MW 15V 5% 1N5245B
DZ0038 Z506 1 ZENER, 500MW 33V 5% 1N5257B
CAPACITORS
CC0040 C503 1 CAP, CA 4700PF 100V 10%
CC0059 C518,C519 1 CAP, CA .1UF 100V 20%
CC0082 C521 1 CAP, CA .1UF 50V 20%
CE0013 C505,C506 2 CAP, E 47UF 50V 20% 5MMLS
CE0098 C507 1 CAP, E 22UF 50V 20% 5X11 5MMLS
CF0019 C501,C502 2 CAP, F 4700PF 100V 5% 5MMLS
CC0021 C516 1 CAP, C 470PF 1KV 10% BULK
CC0130 C524 1 CAP, CY1 4700PF 250V 20% .4LS
CE0040 C504 1 CAP, E 680UF 200V 25X35 85DEG
CE0136 C508,C509 2 CAP, E 820UF 200V 20% 30X35
CF0050 C510,C511,C512,C513,C520 5 CAP, F .1UF 250V 10% 10MMLS
CF0146 C517 1 CAP, F 6.8UF 250V 10% 27MMLS
RESISTORS
RC0082 R509 1 RES, CF 100K 1/2W 5%
RC0136 R515 1 RES, CF 160K 1/4W 5%
RC0273 R518,R519 2 RES, ZERO OHM 1/4W
RM0001 R507 1 RES, MF 1K00 1/4W 1%
Page 27
IL120s
27
IL120s ELECTRONIC PARTS LIST (Cont.)
Part No. Reference Designator Qty Description
RM0002 R525 1 RES, MF 10K0 1/4W 1%
RM0050 R531 1 RES, MF 90K9 1/4W 1%
RM0070 R528 1 RES, MF 301R 1/4W 1%
RM0191 R529 1 RES, MF 20K5 1/4W 1%
RM0198 R508 1 RES, MF 205K 1/4W 1%
RM0260 R526 1 RES, MF 1M0 1/4W 1%
RM0337 R530 1 RES, MF 19K6 1/4W 1%
RM0339 R511,R512,R523,R534,R535 5 RES, MF 10R 0.6W 1% FLAMEPROOF
RM0340 R503,R506 2 RES, MF 22R 0.6W 1% FLAMEPROOF
RM0397 R502,R505 2 RES, MF 422R 1/4W 1%
RM0399 R527 1 RES, MF 3K48 1/4W 1%
RW0022 R521,R522,R532,R533 4 RES, WW 0R1 2W 5%
RX0046 R514 1 RES, MO 47K 1W 5%
RX0048 R501,R504 2 RES, MO 330R 1W 5%
RX0072 R524 1 RES, MO 100R 1W 5%
KS0021 R513 1 SURGISTOR, 4R 8A 70J SL154R008
RX0106 R538 1 RES, MO 15K 2W 5%
MISCELLANEOUS
500111 T501 1 XFMR, POWER 500W ETD44 160V
540131 L501 1 IND, 25UH UPRIGHT AIR COIL
BF0007 L502 1 BEAD, FERRITE
TS0016 6 TUBING, #5 BLACK CUT TO .3 USED ON
D4,D8,Q1,Q2,Q4,Q7
JH0074 J505 1 CNCTR, HEADER 8PIN LOCKING .1C
MT0023 J501,J502,J503,J504 4 TERM, FASTON MALE PCMT 187X032
PCB, VOLUME-LED RIGHT
SEMICONDUCTORS
DL0014 D1,D2 2 LED, 3MM BICOLOR RED/GR
RESISTORS
RP0097 R1 1 POT, A10K SINGLE/BRKT D SHAFT
MISCELLANEOUS
JH0006 J1 1 CNCTR, HEADER 4PIN .100CTR
HS0078 3 SCREW, #4-24X1/2 HL PP BLK USED ON
610044
INTERLUDE CUP R 1 INTERLUDE VOL-LED MTG PLT RIGH
JC0169A 1 CNCTR, FEM-MA HARNESS 4PSH 15
USED ON LOCATION J1
MM0066 1 MISC, VOL GASKET R INTERLUDE GAS-
KET RIGHT
RP0103 1 POT, KNOB INTERLUDE LEVEL R
Page 28
IL120s
28
PCB, AC FILTER/EMI
SEMICONDUCTORS
DB0009 D5 1 RECT, 6A400V BRIDGE
RESISTORS
RC0004 R23 1 RES, CF 1M0 1/4W 5%
CAPACITORS
CC0130 C3 1 CAP, CY1 4700PF 250V 20% .4LS
CF0050 C4,C5 2 CAP, F .1UF 250V 10% 10MMLS
CF0057 C2 1 CAP, FX .22UF 250V 10%
MISCELLANEOUS
KV0001 Z4 1 VARISTOR, 275V 100J .6W
480022 J1 1 SUB, #18B 6 187X032/1/4STRP
480028 J2 1 SUB, #18R 6 187X032/1/4STRP
540124 L1 1 IND, CM CHOKE YT7271
MT0023 J5,J6 2 TERM, FASTON MALE PCMT 187X032
MISCELLANEOUS
480033 3 SUB, #18R 4 187X032/187X032 IEC LIVE
TO FUSE; FUSE TO SWITCH; SWITCH TO
EMI BOARD
480048 1 SUB, #18B 9 187X032/187X032 CD- TO
LINEAR BOARD
480073 1 SUB, #18R 9 187X032/187X032 CD+ TO
LINEAR BOARD
480083 2 SUB, #18B 4 187X032/187X032 IEC NEU-
TRAL TO SWITCH; SWITCH TO EMI
BOARD
480091 1 SUB, #18R 7 187X032/187X032 DC+ TO
POWER SUPPLY BOARD
480119 1 SUB, #16B 20 205X032/205X032 XOVER -
WIRE
480120 1 SUB, #16R 20 250X032/250X032 XOVER +
WIRE
480121 1 SUB, #16B 30 205X032/205X032 SPEAK-
ER - WIRE
480122 1 SUB, #16R 30 250X032/250X032 SPEAK-
ER + WIRE
480130 1 SUB, #18B 7 187X032/187X032 DC- TO
POWER SUPPLY BOARD
810056 6 MET, HTSNK CLIP .9X.5X.2 FET
Q3,Q4,Q7,Q8,U2,U3 ON THE LINEAR
BOARD
IL120s ELECTRONIC PARTS LIST (Cont.)
Part No. Reference Designator Qty Description
Page 29
IL120s
29
810066 6 MET, HTSNK CLIP HPS SERIES USED
ON D4,D8,Q1,Q2,Q4,Q7
810088 1 MET, HTSNK 1X2 BRIDGE USED WITH
THE BRIDGE
810105 1 MET, HTSNK PRI 3FET IL120
810106 1 MET, HTSNK SEC 3FET IL120
810107 1 MET, HTSNK SHIELD IL60/120
810108 1 MET, HTSNK PWR BRCKET IL60/120
930054 1 CUP, PCBA BUCKET C/W GASKET FEA-
TURE BOARD BOX
930055 1 CUP, AMP BUCKET AC IN W/GASKET AC
BOX
FH0012 1 FUSE, HOLDER PANEL MT SEALED ON
THE PANEL
FS0026 1 FUSE, 4A 250V 1.25X.25 GLASS
HN0006 1 NUT, HEX KEP #6-32 ZNP USED WITH
THE BRIDGE
HN0015 4 NUT, HEX KEP #8-32 ZNP MOUNT
BRACKET TO PANEL
HS0004 4 SCREW, #6-32X1/4 PAN PHIL ZNP 2PC
USED WITH MM0025; 1PC USED WITH
MZ0040; 1PC USED WITH MZ0045
HS0057 4 SCREW, #8-32X1/2 PAN PHIL BLK
MOUNT BRACKET TO PANEL
HS0060 3 SCREW, #6-32X3/8 PAN PHIL BLK
MOUNT SHIELD TO BRACKET
HS0062 6 SCREW, #6-1/2 TYPE B PP BLK USED
WITH THE FETS ON THE LINEAR BOARD
HS0065 3 SCREW, #6-32X1/4 PAN PHIL BLK 1PC
USED WITH MM0025 ON FEATURE
BOARD; 1PC USED WITH MZ0040; 1PC
USED WITH MZ0045
HS0066 1 SCREW, #6-32X1/2 PAN PHIL BLK USED
WITH THE BRIDGE
HS0067 12 SCREW, #6-3/8 TYPE APP BLK 6PER
USED ON MZ0030; 3PER USED ON
MZ0040; 3PER USED ON MM0025; 8PER
USED ON 930054; 6PER USED ON
930055
HS0078 6 SCREW, #4-24X1/2 HL PP BLK 2PER
USED ON BINDING POSTS; 2PER USED
ON RCA’S; 2PER USED ON CUP
HS0089 4 SCREW, #4-40X1/2 PAN PHIL ZNPTO
CONNECT THE HEATSINKS
HS0092 14 SCREW, #6-19X3/8 HL PP BLK 8PER
USED ON 930054; 6PER USED ON
930055;
IL120 PANEL 1 INTERLUDE IL120 PANEL COMPLETE
IL120s ELECTRONIC PARTS LIST (Cont.)
Part No. Reference Designator Qty Description
Page 30
IL120s
30
JC0071 1 CNCTR, FEM-FEM HARNESS 8PIN 9
ABOS BOARD TO FEATURE BOARD
JC0104 1 CNCTR, 2PIN BP GOLD C/W TERM ON
THE PANEL
JC0129 1 CNCTR, AC IEC SOCKET .250 2PIN ON
THE PANEL
JC0163A 1 CNCTR, FEM-MAL HARNESS 8P 10 J7
ON FEATURE TO J13 ON LINEAR BOARD
JC0163B 1 CNCTR, FEM-FEM HARNESS 8P 10 J7
ON FEATURE TO J13 ON LINEAR BOARD
JC0165 1 CNCTR, FEM-FEM HARNESS 8P 12
POWER SUPPLY BOARD TO LINEAR
BOARD
JC0169C 1 CNCTR, FEM-FEM HARNESS 4PS 28
USED ON J9
MM0069 3 MISC, RUBBER GROMMET IL50/100
MM0076 2 MISC, PANEL GASKET IL60/IL120 ON
THE PANEL
MS0005 2 SILPAD, .009 .3C/W TO3P U2,U3 ON THE
LINEAR BOARD
MS0017 6 MISC, CERAMIC PLATE TO-220
Q3,Q4,Q7,Q8 ON THE LINEAR BOARD;
Q4,Q7 ON POWER SUPPLY BOARD
MZ0003 1 STANDOFF, 6-32 3/8 ROUND AL USED
ON THE AC FILTER BOARD
MZ0030 2 STANDOFF, 3/8 NYLON
MZ0040 2 STANDOFF, 30MM NYLON USED ON THE
RABOS BOARD
MZ0045 1 STANDOFF, 6-32 1.187 HEX AL USED ON
RABOS BOARD
SR0032 1 SWITCH, ROCKER TV5 ON THE PANEL
IL120s ELECTRONIC PARTS LIST (Cont.)
Part No. Reference Designator Qty Description
Page 31
IL120s
31
INTEGRATED CIRCUIT DIAGRAMS
Page 32
IL120s
32
SCHEMATICS
Page 33
IL120s
33
SCHEMATICS (Cont.)
Page 34
IL120s
34
SCHEMATICS (Cont.)
Page 35
IL120s
35
SCHEMATICS (Cont.)
Page 36
IL120s
36
SCHEMATICS (Cont.)
Page 37
IL120s
37
SCHEMATICS (Cont.)
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