Bose Companion 3 User manual

Companion®3 Multimedia
Speaker System
©2007 Bose Corporation Service Manual
Reference Number 271885-SM Rev. 11
Electronic copy only
The Companion 3 multimedia speaker system is a stereo system designed to be used as a computer sound
system. It can be used with any analog audio source. It has a bass module with a 6.5 inch dual voice coil
woofer in a slot ported design. The two satellite speakers connect to the bass module and are easily mounted
to a monitor with brackets, or can be placed on a desk or other desired surface. A wired remote control pod is
used to control volume and mute/un-mute functions. It also has a second input and a stereo headphone output.
There are two different versions of the Companion 3 - Early Version / Later Version. From the outside there is
basically no difference but the boards inside are different. Please note the differences are documented in the
Electronic Part list. If a part numbers has changed from the early version or a part number has been added to
the later version a number 4 will be shown in Notes column. The product codes can be used to determined the
version. The product code for the early version is 033935 and the product code for the later version is 033061.
These product codes are the first six digits of the serial number and are located on the bottom of the system.
The serial number should be used to determined where the system was manufactured before attempting a
repair.
Product Description
Manufacturing Information - Early Version / Later Version

2
Warranty
The Bose®Companion®3 MultiMedia Speaker System is covered by a 1-year, transferable limited
warranty.
Caution: The Companion 3 MultiMedia Speaker System contains no user serviceable parts.
To prevent warranty infractions, refer servicing to warranty service centers or factory service.
Proprietary Information
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF BOSE
CORPORATION WHICH IS BEING FURNISHED ONLY FOR THE PURPOSE OF
SERVICING THE IDENTIFIED BOSE PRODUCT BY AN AUTHORIZED BOSE
SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT
BE REPRODUCED OR USED FOR ANY OTHER PURPOSE.
Contents
Safety Information .............................................................................................................................3
Electrostatic Discharge Sensitive (ESDS) Device Handling .......................................................3
Specifications....................................................................................................................................4
Part List Notes ..................................................................................................................................5
Figure 1. Bass Module Assembly Exploded View ................................................................................6
Bass Module Assembly Parts List ...................................................................................................6
Figure 2. Amplifier Module Assembly Exploded View...........................................................................7
Amplifier Module Assembly Parts list ..............................................................................................7
Figure 3. Packing Exploded Veiw ........................................................................................................8
Packing Parts List .............................................................................................................................8
Electrical Parts List .................................................................................................................... 9-19
Main PCB Assembly Parts List................................................................................................... 9-17
Power Supply PCB Assembly Parts List ................................................................................. 17-19
Disassembly Procedures ......................................................................................................... 20-22
Test Procedures ....................................................................................................................... 23-25
Theory of Operation ................................................................................................................. 26-28
Revision History .............................................................................................................................29
Theory of Operation ................................................................................................................. 26-28

3
Safety Information
1. Parts that have special safety characteristics are identified by the symbol on the schematics
or by special notes on the parts list. Use only replacement parts that have critical characteristics
recommended by the manufacturer.
2. Make leakage current or resistance measurements to determine that exposed parts are acceptably
insulated from the supply circuit before returning the unit to the customer. Use the following checks to
perform these measurements:
A. Leakage Current Hot Check- With the unit completely reassembled, plug the AC line cord directly
into a 120V AC outlet. (Do not use an isolation transformer during this test). Use a leakage current
tester or a metering system that complies with the American National Standards Institute (ANSI)
C101.1 “Leakage Current for Appliances” and the Underwriters Laboratories (UL) 6500/IEC 60056
paragraph 9.1.1. With the unit AC switch first in the ON position and then in the OFF position, mea-
sure from a known earth ground (metal waterpipe, conduit, etc.) to all exposed metal parts of the unit
(antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.) espe-
cially any exposed metal parts that offer an electrical return path to the chassis. Any current measured
must not exceed 0.5 milliamp. Reverse the unit power cord plug in the AC outlet and repeat the test.
ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL
SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO THE CUS-
TOMER.
B. Insulation Resistance Test Cold Check- (1) Unplug the power supply and connect a jumper wire
between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure the resis-
tance with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on
the unit. When testing 3 wire products, the resistance measured to the product enclosure should be
between 2 and infinite MOhms. Also, the resistance measured to exposed input/output connectors
should be between 4 and infinite MOhms. When testing 2 wire products, the resistance measured to
exposed input/output connectors should be between 4 and infinite MOhms. If it is not within the limits
specified, there is the possibility of a shock hazard, and the unit must be repaired and rechecked
before it is returned to the customer.
Electrostatic Discharge Sensitive (ESDS)
Device Handling
This unit contains ESDS devices. We recommend the following precautions when repairing, replacing
or transporting ESDS devices:
•Perform work at an electrically grounded work station.
•Wear wrist straps that connect to the station or heel straps that connect to conductive floor mats.
•Avoid touching the leads or contacts of ESDS devices or PC boards even if properly grounded.
Handle boards by the edges only.
•Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert unprotected
devices into materials such as plastic, polystyrene foam, clear plastic bags, bubble wrap or plastic
trays.

4
Specifications
Mechanical
Dimensions: Bass Module: 8 5/8 “H x 7 1/8” W x 14” D
(21.8 x 18 x 35.56 cm)
Satellite Speaker: 3 1/2” H x 2 1/2” W x 2 3/8” D
(8.89 x 6.35 x 6.10 cm)
Control Pod: 2 1/2 “D x 1 1/8” H
(6.35 x 2.79 cm)
Weight: Bass Module: 15.4 lbs (6.98 kg) unpacked
Satellite Speaker: 0.5 lbs (0.23 kg) each
Packaged System 19.95 lbs (9.06 kg) packed
Finish: Bass Module: Scratch-resistant, satin-finish
vinyl
Satellites: Painted polymer finish
Bass Box: Slot ported
Bass Box Port Tuning: 45 Hz
Electrical
Power Rating: USA/Canada: 115 VAC 50/60 Hz
Japan 100 VAC 50/60 Hz
Euro 230 VAC 50/60 Hz
Nominal System
Bandwidth:
40 Hz to 15 kHz
Maximum SPL: 100 dB (A weighted) pink
noise signal
Output: Bass: 60 Watts
Satellites: 18 Watts per channel

5
Part List Notes
1. This part is not normally available from Customer Service. Approval from the Field Service Manager
is required before ordering.
2. The individual parts on the PCBs are listed in the Electrical Part list.
3. This part is critical for safety purposes. Failure to use a substitute replacement with the same
safety characteristics as the recommended replacement part might create shock, fire and/or other
hazards.
4. The part number listed was included in the latest version of the Companion 3. The Main board and
the Power board for the latest version can be identified by the part number stamped on the compo-
nent side of the board.
Power Board - 285350-001
Main Board - 280066-001
5. The part number listed is an assembly part number. The individual parts of the assembly might not
be available separately.
6. This part is referenced for informational purposes only. It is not stocked as a repair part. Refer to
the next higher assembly for a replacement part.

6
Figure 1. Bass Module Assembly Exploded View
Item Description Part Number Qty. Note
1 BASS MODULE ASSY, US/CANADA, 120V
BASS MODULE ASSY, JAPAN, 100V
BASS MODULE ASSY, EURO, 230V
(Complete package, includes Amp Mod Assy.)
*282451-001
*282451-002
*282451-003
1
1
1
5
5
5
2 CLEAT, ABS 271817-001 1
3 SCREW, 4 x 1, THDF, FLHD, 82 DEG, PH 274151-16 3
4 CLIP, SPRING, KNOB 262542 1
5 KNOB, VOL CNTL, BLK 271860-001 1
6 LABEL, I/O, US/CANADA, 120V
LABEL, I/O, JAPAN, 100V
LABEL, I/O, EURO, 230V
272079-001
272079-002
272079-003
1
7 SCREW, TF, 4 x 3/4, PAN, PH, BLK 273556-12 5
8 MOD ASSY, AMP, 120V
MOD ASSY, AMP, 220V, EURO
MOD ASSY, AMP, 100V JAPAN
*307876-011
*307876-033
*307876-022
1
1
1
3
3,4
3,4
- XFORMER, TORROID, 105W, 15VDC, 7A
TRANSFORMER, TOROID, 100V, 60Hz
TRANSFORMER, TOROID, 230V, 50Hz
271818-001
N/A
277613-001
1
*Capacitor C7 on the new power supply board may need to be replaced, see Service Bulletin 271885-B4
1
2
345
6
7
8
X5
X3

7
Item Description Part Number Qty. Note
1 PCB ASSY, MAIN 280109-01 1 6
2 BRACKET, METAL, IC 271859 1 6
3 HEATSINK, EXTRUDED, COMP 3 271856 1 6
4 CLIP, THERMAL, THERMISTOR 272964-001 1 6
5 HEAT SPREADER, ALUM 279844-001 1 6
6 SCREW, TAPP, 6-13x.625, PAN, XRC/S 172783-10 4
7 CONN, SWITCH, POWER, 3P 273115-001 1 6
8 PCB ASSY, PS, 120V, US
PCB ASSY, PS, 100V, JAPAN
PCB ASSY, PS, 240V, EURO
307872-011
307872-022
307872-033
1
1
1
4
4
4
*Capacitor C7 on the new power supply board may need to be replaced, see Service Bulletin 271885-B4
Figure 2. Amplifier Module Assembly
1
23
4
5
6
8
7

8
Item
Number Description Part Number Qty . Notes
1 OWNER’S GUIDE US/CANADA
OWNER’S GUIDE 5 LANG 271883-001 272956 1 1
2 BAG, POLY, 14.38 x 9.87 x 2 mil 103351 1
3 PACKING TUBE, 4.75 x 2.75 x 7.69 273522 1
4 BASS MODULE ASSY, US/CANADA, 120V
BASS MODULE ASSY, EURO, 230V
BASS MODULE ASSY, JAPAN, 100V
(Complete package, includes Amp Mod
Assy.)
282451-001
282451-002
282451-003
1
1
1
5
4,5
4,5
5 CONTROL POD (NON-REPAIRABLE) 307874-001 1 5
6 LINE CORD, 100V, BLK, JAPAN
LINE CORD, 120V, BLK, US/CANADA
LINE CORD, 220V, BLK, EURO
LINE CORD, 230V, BLK, UK
LINE CORD, 240V, BLK, AUS
264514-001
262814-001
148203
134725
284243-001
1
1
1
1
1
3
7 BRACKET, SAT, LEFT 271880-001 1
8 BRACKET, SAT, RGHT 271881-001 1
9 CABLE, INPUT, 3.5MM, 6FT, BLK 271994-001 1
10 SCREW, MACH, M4 x 0.5, PAN 272963-08 2
11 BAG, POLY, 14.38 x 9.87 x 2 mil 103351 1
12 FASTENER, RD, CLR, 21MM OD, PSA 273164 2
13 FEET, CLEAR, SATELLITE 178321-04 16
14 FEET, RUBBER, BRACKET 260465 4
15 SAT ASSY, BLACK/GRAY 271827-019 2
16 CARTON, RSC, PRINTED 272410 1
17 PACKING, EPS, FILLERS 272409 2
Figure 3. Packaging Exploded View
1
15
17
4
X2
2
3
56789
10 11 12 13 14
16 X2

9
Reference
Designator
Description Part Number Note
R1 1.00K, 0805, 1/10W, 1% 133625-1001
R4 1.00K, 0805, 1/10W, 1% 133625-1001
R2 1.00K, 0805, 1/10W, 1% 133625-1001
R3 1.00K, 0805, 1/10W, 1% 133625-1001
R5 2.00K, 0805, 1/10W, 1% 133625-2001
R6 JUMPER, CHIP, 0805 133627
R101 1.21K, 0805, 1/10W, 1% 133625-1211
R102 1.30K, 0805, 1/10W, 1% 133625-1301
R103 9.53K, 0805, 1/10W, 1% 133625-9531
R104 10.0K, 0805, 1/10W, 1% 133625-1002
R105 127K 0805, 1/10W, 1% 133625-1273
R106 127K 0805, 1/10W, 1% 133625-1273
R107 10.0K, 0805, 1/10W, 1% 133625-1002
R108 10.0K, 0805, 1/10W, 1% 133625-1002
R109 2.00K, 0805, 1/10W, 1% 133625-2001
R110 10.0K, 0805, 1/10W, 1% 133625-1002
R111 10.0K, 0805, 1/10W, 1% 133625-1002
R125 2.55K, 0805, 1/10W, 1% 133625-2551
R126 200K, 0805, 1/10W, 1% 133625-2003
R127 47.5K, 0805, 1/10W, 1% 133625-4752
R128 1.10K, 0805, 1/10W, 1% 133625-1101
R129 21.5K, 0805, 1/10W, 1% 133625-2152
R130 330 OHM, 0805, 1/10W, 1% 133625-3300
R131 6.81K, 0805, 1/10W, 1% 133625-6811
R132 17.4K, 0805, 1/10W, 1% 133625-1742
R133 1.62K, 0805, 1/10W, 1% 133625-1621
R134 2.00K, 0805, 1/10W, 1% 133625-2001
R135 1.00K, 0805, 1/10W, 1% 133625-1001
R136 1.82K, 0805, 1/10W, 1% 133625-1821
R137 10.0K, 0805, 1/10W, 1% 133625-1002
R138 2.00K, 0805, 1/10W, 1% 133625-2001
R139 1.50K, 0805, 1/10W, 1% 133625-1501
R140 1.50K, 0805, 1/10W, 1% 133625-1501
R201 1.21K, 0805, 1/10W, 1% 133625-1211
R202 1.30K, 0805, 1/10W, 1% 133625-1301
R203 9.53K, 0805, 1/10W, 1% 133625-9531
R204 127K 0805, 1/10W, 1% 133625-1273
R205 10.0K, 0805, 1/10W, 1% 133625-1002
R206 127K 0805, 1/10W, 1% 133625-1273
R207 10.0K, 0805, 1/10W, 1% 133625-1002
R208 10.0K, 0805, 1/10W, 1% 133625-1002
R209 10.0K, 0805, 1/10W, 1% 133625-1002
R210 10.0K, 0805, 1/10W, 1% 133625-1002
R211 2.00K, 0805, 1/10W, 1% 133625-2001
ELECTRICAL PARTS LIST
Main PCB Assembly
Resistors

10
Reference
Designator
Description Part Number Note
R225 100K, 0805, 1/10W, 1% 133625-1003
R226 100K, 0805, 1/10W, 1% 133625-1003
R227 JUMPER, CHIP, 0805 133627
R229 2.55K, 0805, 1/10W, 1% 133625-2551
R230 200K, 0805, 1/10W, 1% 133625-2003
R231 47.5K, 0805, 1/10W, 1% 133625-4752
R232 1.10K, 0805, 1/10W, 1% 133625-1101
R233 21.5K, 0805, 1/10W, 1% 133625-2152
R234 330 OHM, 0805, 1/10W, 1% 133625-3300
R235 6.81K, 0805, 1/10W, 1% 133625-6811
R236 17.4K, 0805, 1/10W, 1% 133625-1742
R237 1.62K, 0805, 1/10W, 1% 133625-1621
R238 2.00K, 0805, 1/10W, 1% 133625-2001
R239 1.00K, 0805, 1/10W, 1% 133625-1001
R240 1.82K, 0805, 1/10W, 1% 133625-1821
R241 10.0K, 0805, 1/10W, 1% 133625-1002
R242 2.00K, 0805, 1/10W, 1% 133625-2001
R243 1.50K, 0805, 1/10W, 1% 133625-1501
R244 1.50K, 0805, 1/10W, 1% 133625-1501
R301 1.00K, 0805, 1/10W, 1% 133625-1001
R301 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R301 100 OHM, 0805, 1/10W, 1% 133625-1000 Euro /UK /Aus
R302 1.00K, 0805, 1/10W, 1% 133625-1001
R302 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R302 100 OHM, 0805, 1/10W, 1% 133625-1000 Euro /UK /Aus
R305 10.0K, 0805, 1/10W, 1% 133625-1002
R306 10.0K, 0805, 1/10W, 1% 133625-1002
R307 1.20 OHMS, 2512, 1W, 5% 181895-1R20 Euro /UK /Aus
R308 1.00K, 0805, 1/10W, 1% 133625-1001
R309 100 OHM, 0805, 1/10W, 1% 133625-1000
R310 100 OHM, 0805, 1/10W, 1% 133625-1000
R311 JUMPER, CHIP, 0805 133627
R311 1.00K, 0805, 1/10W, 5% 133626-1025 4
R312 JUMPER, CHIP, 0805 133627
R312 1.00K, 0805, 1/10W, 5% 133626-1025 4
R314 1.00K, 0805, 1/10W, 1% 133625-1001
R315 1.00K, 0805, 1/10W, 1% 133625-1001
R316 249 OHM, 0805, 1/10W, 1% 133625-2490
R317 249 OHM, 0805, 1/10W, 1% 133625-2490
R318 100K, 0805, 1/10W, 1% 133625-1003
R319 249 OHM, 0805, 1/10W, 1% 133625-2490
R320 1.00K, 0805, 1/10W, 1% 133625-1001
R323 487K, 0805, 1/10W, 1% 133625-4873
R324 1.21K, 0805, 1/10W, 1% 133625-1212
ELECTRICAL PARTS LIST
Main PCB Assembly
Resistors (continued)

11
Reference
Designator
Description Part Number Note
R325 1.21K, 0805, 1/10W, 1% 133625-1212
R327 20.0K, 0805, 1/10W, 1% 133625-2002
R327 JUMPER, CHIP, 0805 133627 4
R327 JUMPER, CHIP, 0805 133627 Euro
R328 JUMPER, CHIP, 0805 133627
R329 16.2K, 0805, 1/10W, 1% 133625-1622
R330 78.7K, 0805, 1/10W, 1% 133625-7872
R331 2.00K, 0805, 1/10W, 1% 133625-2001
R334 100K, 0805, 1/10W, 1% 133625-1003
R335 100K, 0805, 1/10W, 1% 133625-1003
R336 2.2 OHM, 0805, 1/10W, 5% 133626-2R25
R336 10 OHM, 2512, 1W, 5% 181895-10R0 Euro
R337 402 OHM, 0805, 1/10W, 1% 133625-4020
R337 162 OHM, 0805, 1/10W, 1% 133625-1620 Euro
R338 14.0K, 0805, 1/10W, 1% 133625-1402
R339 1.00K, 0805, 1/10W, 1% 133625-1001
R340 10.0K, 0805, 1/10W, 1% 133625-1002
R347 2.00K, 0805, 1/10W, 1% 133625-2001
R348 2.00K, 0805, 1/10W, 1% 133625-2001
R349 JUMPER, CHIP, 0805 133627
R350 JUMPER, CHIP, 0805 133627
R350 JUMPER, CHIP, 0805 133627 Euro
R351 JUMPER, CHIP, 0805 133627
R351 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R351 100 OHM, 0805, 1/10W, 1% 133625-1000 Euro
R352 1.00K, 0805, 1/10W, 1% 133625-1001
R353 1.00K, 0805, 1/10W, 1% 133625-1001
R354 1.00K, 0805, 1/10W, 1% 133625-1001 4
R354 1.00K, 0805, 1/10W, 1% 133625-1001 Euro
R355 1.00K, 0805, 1/10W, 1% 133625-1001
R356 499K, RES, 0805, 1/10W, 1% 133625-4993 4
R357 10.0K, 0805, 1/10W, 1% 133625-1002 4
R358 1.1 OHM, SMD, FUSE, 1/10W, 5% 192349-1R1A 3,4
R359 1.1 OHM, SMD, FUSE, 1/10W, 5% 192349-1R1A 3,4
R360 1.1 OHM, SMD, FUSE, 1/10W, 5% 192349-1R1A 3,4
R360 1.1 OHM, SMD, FUSE, 1/10W, 5% 192349-1R1A Euro/UK/Aus
3
R361 1.1 OHM, SMD, FUSE, 1/10W, 5% 192349-1R1A 3,4
R361 1.1 OHM, SMD, FUSE, 1/10W, 5% 192349-1R1A Euro/UK/Aus
3
R362 JUMPER, CHIP, 0805 133627 Euro
R401 100K, 0805, 1/10W, 1% 133625-1003
R402 10.0K, 0805, 1/10W, 1% 133625-1002
ELECTRICAL PARTS LIST
Main PCB Assembly
Resistors (continued)

12
Reference
Designator
Description Part Number Note
R403 221 OHM, 0805, 1/10W, 1% 133625-2210
R404 10.0K, 0805, 1/10W, 1% 133625-1002
R405 1.00K, 0805, 1/10W, 1% 133625-1001
R406 1.00K, 0805, 1/10W, 1% 133625-1001
R407 1.00K, 0805, 1/10W, 1% 133625-1001
R408 1.00K, 0805, 1/10W, 1% 133625-1001
R409 5.90K, 0805, 1/10W, 1% 133625-5901
R410 5.90K, 0805, 1/10W, 1% 133625-5901
R950 2.55K, 0805, 1/10W, 1% 133625-2551
R951 4.12K, 0805, 1/10W, 1% 133625-4121
R952 1.0M, 0805, 1/10W, 1% 133625-1004
R953 10.0K, 0805, 1/10W, 1% 133625-1002
R954 750 OHM, 0805, 1/10W, 1% 133625-7500
R956 88.7K, 0805, 1/10W, 1% 133625-8872
R957 1.21K, 0805, 1/10W, 1% 133625-1211
R958 10.0K, 0805, 1/10W, 1% 133625-1002
R959 1.00K, 0805, 1/10W, 1% 133625-1001
R960 36.5K, 0805, 1/10W, 1% 133625-3652
R961 36.5K, 0805, 1/10W, 1% 133625-3652
R962 1.0M, 0805, 1/10W, 1% 133625-1004
R963 26.7K, 0805, 1/10W, 1% 133625-2672
R964 750 OHM, 0805, 1/10W, 1% 133625-7500
R965 15.4K, 0805, 1/10W, 1% 133625-1542
R966 1.21K, 0805, 1/10W, 1% 133625-1213
R967 1.00K, 0805, 1/10W, 1% 133625-1001
R968 4.99K, 0805, 1/10W, 1% 133625-4991
R969 JUMPER, CHIP, 0805 133627
R970 20.0K, 0805, 1/10W, 1% 133625-2002
R971 10.0K, 0805, 1/10W, 1% 133625-1002
R972 49.9K, 0805, 1/10W, 1% 133625-4992
R973 1.21K, 0805, 1/10W, 1% 133625-1211
R974 1.00K, 0805, 1/10W, 1% 133625-1001
R975 10.0K, 0805, 1/10W, 1% 133625-1002
R976 5.90K, 0805, 1/10W, 1% 133625-5901
R977 100 OHM, 0805, 1/10W, 1% 133625-1000
R978 100K, 0805, 1/10W, 1% 133625-1003
R979 10.0K, 0805, 1/10W, 1% 133625-1002
R980 4.99K, 0805, 1/10W, 1% 133625-4991
R981 100K, 0805, 1/10W, 1% 133625-1003
R982 1.00K, 0805, 1/10W, 1% 133625-1001
R983 1.00K, 0805, 1/10W, 1% 133625-1001
R986 Potentiometer, 10K, +/- 20%, 1B 273741-001
R987 1.54K, 0805, 1/10W, 1% 133625-1541
ELECTRICAL PARTS LIST
Main PCB Assembly
Resistors (continued)

13
Reference
Designator
Description Part Number Note
C001 10000pf, MONO, 100V, 20% 180630-103 4
C002 10000pf, MONO, 100V, 20% 180630-103 4
C101 2.2uF, 1206, X7R, 10V, 20% 260361-2253
C102 .0068uF, BOX, 85C, 100V, 5% 137127-682
C103 .033uF, BOX, 85C, 63V, 5% 137127-333
C104 1000pF, 0805, COG, 50V, 5% 133622-102
C105 100pF, 0805, COG, 50V, 5% 133622-101
C110 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C111 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C112 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C125 .12uF, BOX, 85C, 50V, 5% 137127-124
C126 .12uF, BOX, 85C, 50V, 5% 137127-124
C127 .18uF, BOX, 85C, 50V, 5% 137127-184
C128 .01uF, BOX, 85C, 100V, 5% 137127-103
C129 .01uF, BOX, 85C, 100V, 5% 137127-103
C130 .0015uF, BOX, 85C, 100V, 5% 137127-152
C131 .0056uF, BOX, 85C, 100V, 5% 137127-562
C132 .12uF, BOX, 85C, 50V, 5% 137127-124
C133 .12uF, BOX, 85C, 50V, 5% 137127-124
C134 1000pF, 0805, COG, 50V, 5% 133622-102
C201 2.2uF, 1206, X7R, 10V, 20% 260361-2253
C202 .0068uF, BOX, 85C, 100V, 5% 137127-682
C203 .033uF, BOX, 85C, 63V, 5% 137127-333
C204 100pF, 0805, COG, 50V, 5% 133622-101
C210 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C225 .12uF, BOX, 85C, 50V, 5% 137127-124
C226 .12uF, BOX, 85C, 50V, 5% 137127-124
C227 .18uF, BOX, 85C, 50V, 5% 137127-184
C228 .01uF, BOX, 85C, 100V, 5% 137127-103
C229 .01uF, BOX, 85C, 100V, 5% 137127-103
C230 .0015uF, BOX, 85C, 100V, 5% 137127-152
C231 .0056uF, BOX, 85C, 100V, 5% 137127-562
C232 1000pF, 0805, COG, 50V, 5% 133622-102
C233 .12uF, BOX, 85C, 50V, 5% 137127-124
C234 .12uF, BOX, 85C, 50V, 5% 137127-124
C235 .1uF 0805, X7R, 10%, 25V 181264-104
C236 10uF, EL, SMD, 105, 25V, 20% 255071-100E
C237 .1uF, 0805, X7R, 10%, 25V 181264-104
C238 10uF, EL, SMD, 105, 25V, 20% 255071-100E
C239 .1uF, 0805, X7R, 10%, 25V 181264-104
C240 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C241 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C301 100pF, 0805, COG, 50V, 5% 133622-101
C302 3300pF, 0805, X7R, 50V, 10% 133623-332
C303 100pF, 0805, COG, 50V, 5% 133622-101
C305 3300pF, 0805, X7R, 50V, 10% 133623-332
ELECTRICAL PARTS LIST
Main PCB Assembly
Capacitors

14
Reference
Designator
Description Part Number Note
C306 1uF, EL, SMD, 105, 50V, 20% 255071-1R0H
C307 1uF, EL, SMD, 105, 50V, 20% 255071-1R0H
C308 100pF, 0805, COG, 50V, 5% 133622-101
C309 .015uF, 0805, X7R, 50V, 10% 133623-153 Euro/UK/Aus
C310 100pF, 0805, COG, 50V, 5% 133622-101
C311 10uF, EL, SMD, 105, 25V, 20% 255071-100E
C312 100pF, 0805, COG, 50V, 5% 133622-101
C313 100uF, EL, SMD, 105, 25V, 20% 255071-101E
C314 10uF, EL, SMD, 105, 25V, 20% 255071-100E
C315 10uF, EL, SMD, 105, 25V, 20% 255071-100E
C316 0.1uF, 0805, X7R, 50V 133623-104
C317 0.1uF, 0805, X7R, 50V 133623-104
C318 .022uF, 0805, X7R, 50V, 10% 133623-223
C318 .1uF, 0805, X7R, 10%, 25V 181264-104 Euro/UK/Aus
C319 .022uF, 0805, X7R, 50V, 10% 133623-223
C319 .1uF, 0805, X7R, 10%, 25V 181264-104 Euro/UK/Aus
C320 .47uF, 0805, X7R, 16V, 5% 196995-474
C321 .015uF, BOX, 85C, 100V, 5% 137127-153
C322 47UF, EL, SMD, 105, 25V, 20% 255071-470E
C324 .015uF, BOX, 85C, 100V, 5% 137127-154
C325 0.1uF, 0805, X7R, 50V 133623-104
C326 100pF, 0805, COG, 50V, 5% 133622-101
C326 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C326 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C327 .1uF, BOX, 85C, 50V, 5% 137127-104
C328 100pF, 0805, COG, 50V, 5% 133622-101
C328 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C329 .1uF, BOX, 85C, 50V, 5% 137127-104
C330 100pF, 0805, COG, 50V, 5% 133622-101
C330 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C330 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C331 100pF, 0805, COG, 50V, 5% 133622-101
C331 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C331 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C332 1000pF, 0805, COG, 50V, 5% 133622-102
C333 100pF, 0805, COG, 50V, 5% 133622-101
C333 1000pF, 0805, COG, 50V, 5% 133623-102 Euro/UK/Aus
C333 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C334 100pF, 0805, COG, 50V, 5% 133622-101
C334 1000pF, 0805, COG, 50V, 5% 133623-102 Euro/UK/Aus
C334 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C335 100pF, 0805, COG, 50V, 5% 133622-101
C335 1000pF, 0805, COG, 50V, 5% 133623-102 Euro/UK/Aus
C335 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C336 100pF, 0805, COG, 50V, 5% 133622-101
ELECTRICAL PARTS LIST
Main PCB Assembly
Capacitors (continued)

15
Reference
Designator
Description Part Number Note
C336 1000pF, 0805, COG, 50V, 5% 133623-102 Euro/UK/Aus
C336 .01uF, 0805, X7R, 50V, 10% 133623-103 4
C337 10uF, EL, SMD, 105CC, 25V, 20% 255071-100E
C338 1000pF, 0805, COG, 50V, 5% 133622-102
C339 1000pF, 0805, COG, 50V, 5% 133622-102
C340 1000pF, 0805, COG, 50V, 5% 133622-102
C341 1000pF, 0805, COG, 50V, 5% 133622-102 4
C341 1000pF, 0805, COG, 50V, 5% 133622-102 Euro/UK/Aus
C342 47uF, EL, SMD, 105CC, 25V, 20% 255071-470E 4
C342 47uF, EL, SMD, 105CC, 25V, 20% 255071-470E Euro/UK/Aus
C343 1000pF, 0805, COG, 50V, 5% 133622-102 4
C343 1000pF, 0805, COG, 50V, 5% 133622-102 Euro/UK/Aus
C348 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C349 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C350 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C351 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C352 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C353 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C354 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C355 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C360 .01uF, 0805, X7R, 50V, 10% 133623-103 Euro/UK/Aus
C401 10uF, EL, SMD, 105C, 25V, 20% 255071-100E
C402 .01uF, 0805, X7R, 50V, 10% 133623-103
C403 .01uF, 0805, X7R, 50V, 10% 133623-103
C404 1000pF, 0805, COG, 50V, 5% 133622-102
C950 10uF, EL, SMD, 105C, 25V, 20% 255071-100E
C951 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C952 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C953 .12uF, BOX, 85C, 50V, 5% 137127-124
C954 .12uF, BOX, 85C, 50V, 5% 137127-124 4
C954 .12uF, BOX, 85C, 50V, 5% 137127-124 Euro/UK/Aus
C954 Film, 16V, 0.12uF, 5%, SMT 274313-124J
C955 10uF, EL, SMD, 105C, 25V, 20% 255071-100E
C956 .01uF, BOX, 85C, 100V, 5% 137127-103
C957 10uF, EL, SMD, 105C, 25V, 20% 255071-100E
C959 1000pF, 0805, COG, 50V, 5% 133622-102
C960 Film, 16V, 0.12uF, 5%, SMT 274313-124J
C960 .12uF, BOX, 85C, 50V, 5% 137127-124 4
C960 .12uF, BOX, 85C, 50V, 5% 137127-124 Euro/UK/Aus
C961 Film, 16V, 0.12uF, 5%, SMT 274313-124J
C961 .12uF, BOX, 85C, 50V, 5% 137127-124 4
C961 .12uF, BOX, 85C, 50V, 5% 137127-124 Euro/UK/Aus
C962 .0015uF, BOX, 85C, 100V, 5% 137127-152
C963 1000pF, 0805, COG, 50V, 5% 133622-102
C964 1000pF, 0805, COG, 50V, 5% 133622-102
C965 1000pF, 0805, COG, 50V, 5% 133622-102
ELECTRICAL PARTS LIST
Main PCB Assembly
Capacitors (continued)

16
Reference
Designator
Description Part Number Note
C966 1000pF, 0805, COG, 50V, 5% 133622-102
C968 .01uF, 0805, X7R, 50V, 10% 133623-103
C969 10uF, EL, SMD, 105C, 25V, 20% 255071-100E
C970 1uF, EL, SMD, 105C, 50V, 20% 255071-1R0H
C971 .47uF, BOX, 85C, 50V, 5% 137127-474
C977 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C980 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C983 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
C988 68pF, 0603, COG, 50V, 5% 188454-680 Euro/UK/Aus
Reference
Designator
Description Part Number Note
L301 330 OHM, BEAD, FERRITE, 0805, 1.5A 267539-331 Euro/UK/Aus
Reference
Designator
Description Part Number Note
D301 SOT-23, BAV 99 147239 Euro/UK/Aus
D301 ZEN, SOD-123, .5W, 5%, 10V 174265-5240
D302 SOT-23, BAV 99 147239
D303 SOT-23, BAV 99 147239
D304 SOT-23, BAV 99 147239
D305 SOT-23, BAV 99 147239
D306 SOT-23, BAV 99 147239 4
D306 SOT-23, BAV 99 147239 Euro/UK/Aus
D401 DUAL, SOT-23, BAW56 180738
D402 DUAL, SOT-23, BAW56 180738
D403 SOT-23, BAV 99 147239
D951 SOT-23, BAV 70 147249
D952 SOT-23, BAV 99 147239
D954 DUAL, SOT-23, BAW56 180738
D955 SOT-23, BAV 99 147239
ZR301 ZEN, SOD-123, .5W, 5%, 10V 174265-5240 Euro/UK/Aus
ELECTRICAL PARTS LIST
Main PCB Assembly
Capacitors (continued)
Inductors
Diodes

17
Reference
Designator
Description Part Number Note
Q303 BPLR, N, 50V, 800mA, SOT23 148770
Q303 NPN, 1.3W, SOT-223 258416-001 Euro/UK/Aus
Q303 NPN, SOT223, 40V, 200mA, 1W 275431 4
Q304 BPLR, P, 40V, 200mA, SOT23 148596
Q305 BPLR, N, 40V, 200mA, SOT23 146819
Q306 BPLR, P, 40V, 200mA, SOT23 148596
Q307 BPLR, P, 40V, 200mA, SOT23 148596
Q308 BPLR, N, 40V, 200mA, SOT23 146819
Q309 BPLR, N, 40V, 200mA, SOT23 146819
Q401 BPLR, N, 40V, 200mA, SOT23 146819
Q402 BPLR, P, 40V, 200mA, SOT23 148596
Q403 BPLR, P, 40V, 200mA, SOT23 148596
Q950 BPLR, N, 40V, 200mA, SOT23 146819
Q951 BPLR, P, 40V, 200mA, SOT23 148596
Q952 BPLR, P, 40V, 200mA, SOT23 148596
Q953 BPLR, N, 40V, 200mA, SOT23 146819
Q954 BPLR, P, 40V, 200mA, SOT23 148596
Reference
Designator
Description Part Number Note
U102 IC, 0P AMP QUAD, SOIC-14, NJM2059 187472
U125 IC, 0P AMP QUAD, SOIC-14, NJM2059 187472
U201 IC, 0P AMP QUAD, SOIC-14, NJM2059 187472
U3 IC, 0P AMP QUAD, SOIC-14, NJM2059 187472
U301 IC, POWER AMP, 4x45W, 25-PIN 271833-001
U401 IC, TRANS, DUAL, SOIC-16, NJM13700 188650-001
U950 IC, TRANS, DUAL, SOIC-16, NJM13700 188650-001
U951 IC, 0P AMP QUAD, SOIC-14, NJM2059 187472
Reference
Designator
Description Part Number Note
J301 CONN, HEADER, 3 POS, .156 133220-03
J302 CONN, JACK, 3.5mm, PCB MNT, STEREO 177154-01
J302 CONN, JACK PHONE, 3.5MM 269841-001 4
J302 CONN, JACK PHONE, 3.5MM 269841-001 Euro/UK/Aus
J305 CONN, HEADER, INLINE, PCB MNT, 4P 133220-04
J307 CONN, RCA, DUAL, PC MOUNT 272376-001
J308 CONN, MINI DIN, R/A, 9-PIN 273227-001
ELECTRICAL PARTS LIST
Main PCB Assembly
Transistors
Integrated Circuits
Miscellaneous

18
Reference
Designator
Description Part Number Note
R1 1.00K, 0805, 1/10W, 1% 133625-1001
R2 1.00K, 0805, 1/10W, 1% 133625-1001
R3 1.00K, 0805, 1/10W, 1% 133625-1001
R4 1.00K, 0805, 1/10W, 1% 133625-1001
R5 2.00K, 0805, 1/10W, 1% 133625-2001
R6 10.0 OHM, 0805,1/10W,1% 133625-10R0 4
R6 10.0 OHM, 0805,1/10W,1% 133625-10R0 Japan
R6 10.0 OHM, 0805,1/10W,1% 133625-10R0 Euro/UK/Aus
R6 JUMPER, CHIP, 0805 133627
R7 412 OHMS, 0805, 1/10W, 1% 133625-4120
R8 JUMPER, CHIP,0805 133627
R9 412 OHMS, 0805, 1/10W, 1% 133625-4120
R10 JUMPER, CHIP,0805 133627
R11 10.0 OHM, 0805,1/10W,1% 133625-10R0
RT1 22K, THERMISTOR, RADIAL, 1/4W, 5% 177557
RT2 22K, THERMISTOR, RADIAL, 1/4W, 5% 177557
VR1 VARISTOR, MET OX, 275V, 140 JOULE 273545-001
VR1 VARISTOR,MET OX, 300V, 140 JOULE
TUBING,HEAT SHRINK, .75 INCH
273545-002
267807
Euro/UK/Aus
VR1 VARISTOR, MET OX, 175V, 140 JOULE
TUBING,HEAT SHRINK, .75 INCH
273545-003
267807
Japan
Reference
Designator
Description Part Number Note
C1 1.0uF, BOX, 85, 100V, 5% 137127-105
C2 .22 uF, 0805, X7R, 10%, 25V 181264-224
C3 .047uF, 0805, X7R, 50V, 10% 133623-473
C4 .1uF, 0805, X7R, 10%, 25V 181264-104 4
C4 .1uF, 0805, X7R, 10%, 25V 181264-104 Japan
C4 .1uF, 0805, X7R, 10%, 25V 181264-104 Euro/UK/Aus
C4 .22 uF, 0805, X7R, 10%, 25V 181264-224
C5 .1uF, 0805, X7R, 10%, 25V 181264-104
C7 39000 uF, EL, AL, 25V 260693-3931E Euro/Japan
C7 33000 uFD, EL, AL, 25V, 4T 260693-3331E
C8 .22UF, FILM, X2, 275VAC, 15MM 268166-224B
Reference
Designator
Description Part Number Note
L1 Choke, Common mode, with header 277667-001 4
L1 Choke, Common mode, with header 277667-001 Japan
L1 Choke, Common mode, with header 277667-001 Euro/UK/Aus
ELECTRICAL PARTS LIST
Power Supply PCB Assembly
Resistors
Capacitors
Inductors

19
Reference
Designator
Description Part Number Note
BR1 RECTIFIER, BRIDGE, 8A, 400V 260684-400
D1 13V, ZEN, SOD-123, .5W, 5% 174265-5243
D2 SOT-23, BAV 99 147239
Reference
Designator
Description Part Number Note
Q1 BPLR, P, 40V, 200mA, SOT23 148596
Q2 BPLR, P, 40V, 200mA, SOT23 148596
Q3 MFET, N, 55V, TO-220FP 257359-001
Q4 BPLR, P, 40V, 200mA, SOT23 148596
Q5 BPLR, P, 40V, 200mA, SOT23 148596
Reference
Designator
Description Part Number Note
F1 FUSE, 4.0A, 125V, .60X.19, SLOBLO, US
FUSE, 3.15A, 250V, 5.5X21mm, SLO-BLO, US
135677-12
298780-3150 3
F1 FUSE, 2.0 AMPS, AXIAL, EURO 269855-02000 3
F1 FUSE, 4.0A, 125V, .60X.19, SLOBLO, JAPAN 135677-12 3
J1 CONN, HEADER, LOCKING, TOP ENTRY 193369-002 3
J2 CONN, HEADER, 3.96mm, 7-pin 272385-07 3
J3 CONN, HEADER, 3 POS, .156 133220-03 3
J5 CONN, AC LINE, PC MOUNT 272684-001
J5 CONN, AC LINE, PC MOUNT 277580-001 Japan/Euro
J6 HEADER, SIDE ENTRY, LOCKING, ALT 272685-07A
ELECTRICAL PARTS LIST
Power Supply PCB Assembly
Diodes
Transistors
Miscellaneous

20
Disassembly Procedures
1.1 Remove the knob from the unit.
1.2 Peel back the label and remove it.
Note: Use double side tape like 3M
double-coated tape number 655 when
replacing the label or use a new label.
1.3 Remove the three silver Phillips-head
screws located on the right hand side (under
the label) and the five Phillips-head or T-15
Torx head screws around the heat sink fins.
1.4 Slide the electronic module back slightly.
1. Module Assembly Removal