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Bose L1 Compact, Service Manual

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Contents

Safety Information ............................................................................................................................. 3
Warranty ............................................................................................................................................. 3
Specifications .................................................................................................................................... 4
Electrostatic Discharge Sensitive (ESDS) Device Handling ....................................................... 5
Part List Notes .................................................................................................................................. 5
L1 Compact  Accessory Pack ........................................................................................................... 5
Product Description ..................................................................................................................... 6-8
Packaging Part List, L1 Compact Power Stand (includes Array) (see Figure 1) ........................ 9

Figure 1. L1 Compact Power Stand Packaging View ..........................................................................

9

Packaging Part List, L1 Compact  Array Extensions (see Figure 2) .......................................... 10

Figure 2. L1 Compact Array Extensions Packaging View .................................................................

10

Main Part List, L1 Compact Power Stand (see Figure 3) ....................................................... 11-12

Figure 3. L1 Compact Power Stand Exploded View ..........................................................................

12

Main Part List, L1 Compact Array Speaker (see Figure 4) .......................................................... 13

Figure 4. L1 Compact Array Speaker Exploded View ........................................................................

13

Main Part List, L1 Compact Array Extension Exploded View (see Figure 5) ............................ 14

Figure 5. L1 Compact Array Extension Exploded View .....................................................................

14

Electrical Part List .................................................................................................................... 15-37
Input/Output PCB Assembly .................................................................................................... 15-29
3.5mm Line Input PCB Assembly ................................................................................................... 29
Output PCB Assembly .............................................................................................................. 29-30
Power Amplifier PCB Assembly ............................................................................................... 31-37
Disassembly Procedures ......................................................................................................... 38-44
Test Procedures ....................................................................................................................... 45-48
IC Diagrams ............................................................................................................................... 49-50
Service Manual Revision History ................................................................................................. 51

Summary of Contents for L1 Compact

Page 1: ... 2009 Bose Corporation Reference Number 318882 SM Rev 01 Service Manual L1 Compact Portable Line Array System Electronic Copy Only ...

Page 2: ...Packaging View 10 Main Part List L1 Compact Power Stand see Figure 3 11 12 Figure 3 L1 Compact Power Stand Exploded View 12 Main Part List L1 Compact Array Speaker see Figure 4 13 Figure 4 L1 Compact Array Speaker Exploded View 13 Main Part List L1 Compact Array Extension Exploded View see Figure 5 14 Figure 5 L1 Compact Array Extension Exploded View 14 Electrical Part List 15 37 Input Output PCB ...

Page 3: ...IFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER 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 resistance with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the unit...

Page 4: ...tensions 2 32 5 H x 2 75 W x 2 75 D 2 3 lbs 1 05 kg each Collapsed Position 16 5 H x 13 25 W x 16 75 D 24 6 lbs 11 2 kg assembled 41 8 cm x 33 9 cm x 42 6 cm Extended Position 78 5 H x 13 25 W x 16 75 D 29 2 lbs 13 3 kg assembled 199 5 cm x 33 9 cm x 42 6 cm Shipping Cartons Weight L1 Compact System no extensions 30 4 lbs 13 8 kg L1 Compact Extensions 7 5 lbs 3 4 kg Electrical AC Power Rating 100 ...

Page 5: ...tation 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 L1 Compact Access...

Page 6: ...nce because the system sets up behind the performer and serves as both the monitor for the stage and amplification system for the audience The performer alone controls the sound Versatility In addition to musical performances the L1 Compact provides quality sound for a wide variety of general purpose uses including presentations celebrations speeches and music playback for about 100 people Integra...

Page 7: ... each other 2 Align the plug on the bottom of the Extension with the socket on the Power Stand then slide the extension into the power stand 3 Align the remaining Extension and push it firmly in place 4 Align the Loudspeaker Array and push it firmly in place Connecting power to the system 1 Make sure the power switch is off down position 2 Plug one end of the power cord into the connector on the p...

Page 8: ...atus in color Green Input signal present Red Input signal clipping 7 Volume control Adjusts the overall volume of all input sources connected to Channel 2 8 1 8 inch stereo input Stereo analog input for connecting audio sources such as portable mp3 players satellite radio laptop computers video projectors and smart boards Left and right inputs are summed by the power stand 9 RCA stereo input Analo...

Page 9: ...0042 0010 4301 7354 0 Owner s Guide China 320043 0010 4301 7356 0 Owner s Guide Japan 320044 0010 4301 7352 0 2YR Warranty Card Registration 320561 0010 3050 4571 0 4 Filler Top Power Stand 317383 000S 1493 2001 0 5 Quick Start Guide Card 317639 0010 3050 4561 0 6 Power Stand Slip Cover 317403 010S 4201 1180 0 7 L1 Compact Power Stand 120V US REF L1 Compact Power Stand 220V China REF L1 Compact Po...

Page 10: ...pact Array Extensions see Figure 2 Packaging Part List Item Number Description Bose Part Number Vendor Part Number Note 1 Carton Extensions 317385 000S 1481 4701 0 2 Extensions Carry Bag 317404 010S 4201 1170 0 3 L1 Compact Extension 318881 010S svc cajun11 exte ...

Page 11: ...01 0 17 Switch Power DPST 250V 10A 317373 000S 5200 4969 0 3 18 Inlet AC UL CSA VDE 250V 2113 1144 0 3 19 Screw M3x12 CSH Blk 2901 3012 3000 4 20 Nut M4 2640 4030 0703 4 21 Heatsink Amplifier PCB 160x120mm 5401 0191 0 4 22 PCB Assy Amp SMPS 317372 000S SVC CAJUN01 PAMP 2 23 Screw Machine M4 2904 4020 3000 4 24 Enclosure Bottom 317347 010S 1468 5601 0 25 Foot Rubber 31x31x10 4157 1191 0 3 26 Screw ...

Page 12: ... Number Description Bose Part Number Vendor Part Number Note PCB Assy COB COM Includes PRE AMP ASSY 3 5MM Jack Input Card Line Output Card 317371 000S SVC CAJUN01 COB 2 PCB Assy IN COM 3 5MM Jack Input Card 319967 000S SVC CAJUN01 IN 2 PCB Assy OUT COM Line Output Card 319968 000S SVC CAJUN01 OUT 2 Figure 3 L1 Compact Power Stand Exploded View ...

Page 13: ...fle Array ABS Black 4155 3791 0 4 5 Twiddler 2 5 inch 291636 001 1525 2120 0 3 6 Screw M3x10 BT ZN Blk 2934 3010 3000 4 7 Grille Array W Logo 317365 010S svc cajun01 gril 8 Butyl Tape 9500 1101 0 4 9 Wire Spk 2P 20 UL1007 L 250 180 RD BLK 7013 0760 0 3 4 10 Array Logo 317407 010S 2150 7311 0 11 EVA Gasket Baffle 4149 1121 0 4 12 Screw M3x13 5 6MM BK ZN CR HD 2931 3013 3000 4 13 Label Serial Number...

Page 14: ...e Array Extension Complete Assembly Consists of below items 318881 010S svc cajun11 exte 1 Wire 2P 20 UL2468 L 850 Red Blk Molex MDI 7013 0750 0 3 4 2 Label Serial Number 30x7mm 4 3 Screw B tite Flat CS M3x16 CS Recess BZ 2951 3016 3000 4 4 Extension Front ABS Blk 4155 3821 0 4 5 Extension Rear ABS Blk 4155 3831 0 4 6 MS Screw M3x12 CSH BK 2901 3012 3000 4 7 Guide Strip POM Blk 4155 3861 0 4 8 Gas...

Page 15: ...723 105A P 4 R120 100K RMG 1 16W 1 0603 4723 104A P 4 R122 39K RMG 1 10W 1 0603 4720 393A P 4 R123 39K RMG 1 10W 1 0603 4720 393A P 4 R124 12K RMG 1 16W 1 0603 4723 123A P 4 R125 150 OHM RMG 1 16W 1 0603 4723 154A P R 4 R126 75K RMG 1 16W 1 0603 4723 753A P 4 R127 8 87K RMG 1 16W 1 0603 1608 4723 8871 P 4 R128 47K RMG 1 16W 1 0603 1608 4723 473A P 4 R129 60 4K RMG 1 16W 1 0603 1608 4723 6042 P 4 R...

Page 16: ...1 0603 4723 123A P 4 R169 3K RMG 1 16W 1 0603 4723 302A P 4 R170 24K RMG 1 16W 1 0603 4723 243A P 4 R172 820 OHM RMG 1 16W 1 0603 1608 4723 821A P 4 R173 820 OHM RMG 1 16W 1 0603 1608 4723 821A P 4 R174 0 OHM RMG 1 16W 5 0603 4723 000J P R 4 R175 0 OHM RMG 1 16W 5 0603 4723 000J P 4 R177 510 OHM RMG 1 4W 5 1206 4725 511J 6 4 R178 510 OHM RMG 1 4W 5 1206 4725 511J 6 4 R179 100K RMG 1 16W 1 0603 472...

Page 17: ...R231 0 OHM RMG 1 16W 5 0603 4723 000J P 4 R232 1M RMG 1 16W 1 0603 4723 105A P 4 R234 0 OHM RMG 1 16W 5 0603 4723 000J P R 4 R236 3 9K RMG 1 16W 1 0603 1608 4723 392A P 4 R238 2K RMG 1 16W 1 0603 1608 4723 202A P 4 R239 2K RMG 1 16W 1 0603 1608 4723 202A P 4 R240 3 9K RMG 1 16W 1 0603 1608 4723 392A P 4 R241 3 9K RMG 1 16W 1 0603 1608 4723 392A P 4 R243 0 OHM RMG 1 16W 5 0603 4723 000J P R 4 R244 ...

Page 18: ...307 20K RMG 1 16W 1 0603 1608 4723 203A P 4 R308 100K RMG 1 16W 1 0603 4723 104A P R 4 R309 33K RMG 1 16W 1 0603 4723 333A P R 4 R311 10K RMG 1 16W 1 0603 4723 103A P R 4 R312 10K RMG 1 16W 1 0603 4723 103A P R 4 R313 100K RMG 1 16W 1 0603 4723 104A P R 4 R314 10K RMG 1 16W 1 0603 4723 103A P R 4 R315 10K RMG 1 16W 1 0603 4723 103A P R 4 R316 20K RMG 1 16W 1 0603 1608 4723 203A P 4 R317 10K RMG 1 ...

Page 19: ... 6K RMG 1 10W 1 0603 4720 5362 P 4 R369 100K RMG 1 16W 1 0603 4723 104A P R 4 R373 8 45K RMG 1 10W 1 0603 4720 8451 P 4 R376 23 2K RMG 1 16W 1 0603 1608 4723 2322 P 4 R378 107K RMG 1 10W 1 0603 4720 1073 P 4 R381 97 6K RMG 1 10W 1 0603 4720 9762 P 4 R386 470K RMG 1 16W 1 0603 4723 474A P 4 R391 470K RMG 1 16W 1 0603 4723 474A P 4 R392 47K RMG 1 16W 1 0603 4723 473A P R 4 R393 24K RMG 1 16W 1 0603 ...

Page 20: ...4723 204A P 4 R453 100 OHM RMG 1 16W 1 0603 4723 101A P 4 R500 200K RMG 1 16W 1 0603 1608 4723 204A P 4 R501 47 OHM RMG 1 2W 1 2010 4727 470A W 4 R502 47 OHM RMG 1 2W 1 2010 4727 470A W 4 R503 100 OHM RMG 1 16W 1 0603 4723 101A P 4 R504 100 OHM RMG 1 16W 1 0603 4723 101A P 4 R505 270 OHM RMG 1 16W 1 0603 4723 271A P R 4 R506 0 OHM RMG 1 16W 5 0603 4723 000J P 4 R507 6 8K RMG 1 16W 1 0603 1608 4723...

Page 21: ...J P AC 4 C120 0 1uF CC 50V 5 0603 150F 104J P AC 4 C121 0 1uF CC 50V 5 0603 150F 104J P AC 4 C122 0 1uF CC 50V 5 0603 150F 104J P AC 4 C123 0 1uF CC 50V 5 0603 150F 104J P AC 4 C124 0 1uF CC 50V 5 0603 150F 104J P AC 4 C125 0 1uF CC 50V 5 0603 150F 104J P AC 4 C126 0 1uF CC 50V 5 0603 150F 104J P AC 4 C127 0 1uF CC 50V 5 0603 150F 104J P AC 4 C128 0 1uF CC 50V 5 0603 150F 104J P AC 4 C129 0 1uF CC...

Page 22: ...E 16V 20 RLT 5X7 157D 476M K IME 4 C175 47uF CE 16V 20 RLT 5X7 157D 476M K IME 4 C200 0 1uF CC 50V 5 0603 150F 104J P AC 4 C201 0 1uF CC 50V 5 0603 150F 104J P AC 4 C202 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C208 0 1uF CC 50V 5 0603 150F 104J P AC 4 C209 0 1uF CC 50V 5 0603 150F 104J P AC 4 C210 0 1uF CC 50V 5 0603 150F 104J P AC 4 C211 0 1uF CC 50V 5 0603 150F 104J P AC 4 C212 0 1uF CC 50...

Page 23: ...AC 4 C309 1000pF CC 50V 5 0603 X7R 150F 102J P AC 4 C310 47uF CE 25V 20 RLT 5X11 ELNA 157E 476M K IUE 4 C311 47uF CE 25V 20 RLT 5X11 ELNA 157E 476M K IUE 4 C312 4700pF CC 50V 5 0603 0 8X1 6 150F 472J P AC 4 C313 68pF CC 50V 5 0603 0 8X1 6 150F 680J P AC 4 C314 68pF CC 50V 5 0603 0 8X1 6 150F 680J P AC 4 C315 0 1uF CC 50V 5 0603 150F 104J P AC 4 C316 0 1uF CC 50V 5 0603 150F 104J P AC 4 C317 0 1uF ...

Page 24: ...50F 104J P AC 4 C366 0 1uF CC 50V 5 0603 150F 104J P AC 4 C367 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C368 0 1uF CC 50V 5 0603 150F 104J P AC 4 C369 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C370 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C371 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C372 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C373 100pF CC 50V 5 0603 1608 1X2 150F 101J P...

Page 25: ...F CE 25V 20 RLT 6 3X11 105C LOW ESR 157E 107M K LURT 4 C438 0 1uF CC 50V 5 0603 150F 104J P AC 4 C439 0 1uF CC 50V 5 0603 150F 104J P AC 4 C440 0 1uF CC 50V 5 0603 150F 104J P AC 4 C441 0 1uF CC 50V 5 0603 150F 104J P AC 4 C442 10uF CE 50V 20 RLT 5X11 157F 106M K IU 4 C444 0 1uF CC 50V 5 0603 150F 104J P AC 4 C445 0 1uF CC 50V 5 0603 150F 104J P AC 4 C446 100pF CC 50V 5 0603 1608 1X2 150F 101J P A...

Page 26: ...3 PHILIPS 4840 8970 3 4 D203 DIODE BAV99 SOT23 PHILIPS 4840 8970 3 4 D204 LED SMD 1 6X0 8X0 75 GN HIGH 525NM KINGBRIGHT 3700 7851 G 4 D205 LED SMD 1 6X0 8X0 75 GN HIGH 525NM KINGBRIGHT 3700 7851 G 4 D206 DIODE 1SS355TE 17 ROHM 4840 1660 0 4 D207 DIODE 1SS355TE 17 ROHM 4840 1660 0 4 D208 ZENER 0 2W UDZS5 1B ROHM SM 483H 5V11 3 4 D209 LOW CURRENT SMD LED RED 2mA 3700 7829 R 4 D210 LOW CURRENT SMD LE...

Page 27: ...OHM 4840 1660 0 4 D508 DIODE 1SS355TE 17 ROHM 4840 1660 0 4 D509 DIODE 1SS355TE 17 ROHM 4840 1660 0 4 D510 ZENER 1 2W 5 1V MMSZ5231B SOD 123 SMD PANJIT 4837 5V18 3 4 D512 ZENER 1 2W 5 1V MMSZ5231B SOD 123 SMD PANJIT 4837 5V18 3 4 Reference Designator Description Vendor Part Number Note Q100 MMBT4403LT1G SMD 4854 4030 3 4 Q101 MMBT4403LT1G SMD 4854 4030 3 4 Q102 MMBT4403LT1G SMD 4854 4030 3 4 Q103 ...

Page 28: ... J FET INPUT OP AMP 3130 8020 0 4 U301 TL072CDR DUAL J FET INPUT OP AMP 3130 8020 0 4 U302 TL072CDR DUAL J FET INPUT OP AMP 3130 8020 0 4 U303 TL072CDR DUAL J FET INPUT OP AMP 3130 8020 0 4 U304 TL072CDR DUAL J FET INPUT OP AMP 3130 8020 0 4 U305 TL072CDR DUAL J FET INPUT OP AMP 3130 8020 0 4 U306 TL072CDR DUAL J FET INPUT OP AMP 3130 8020 0 4 U307 TL072CDR DUAL J FET INPUT OP AMP 3130 8020 0 4 U3...

Page 29: ... ALPHA 4751 1849 0 4 VR101 VR 50KBX1 XV09203 PVBN25F NOBLE 4750 9655 0 4 VR102 VR 50KBX1 XV09203 PVBN25F NOBLE 4750 9655 0 4 VR200 VR 20KAX2 RD902 40 15F ALPHA 4751 0750 0 4 3 5mm Line Input PCB Assembly Miscellaneous Reference Designator Description Vendor Part Number Note CN308B WAFER 5P P2 5 RA M S5B XH A 2101 3255 0 4 J801 JACK PHONE 3 5MM STEREO 3P 2113 3335 0 4 Output PCB Assembly Resistors ...

Page 30: ...0 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C701 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C702 100pF CC 50V 5 0603 1608 1X2 150F 101J P AC 4 C801 0 1uF CC 50V 5 0603 150F 104J P AC 4 C802 1000pF CC 50V 5 0603 X7R 150F 102J P AC 4 C803 1000pF CC 50V 5 0603 X7R 150F 102J P AC 4 C804 0 1uF CC 50V 5 0603 150F 104J P AC 4 Reference Designator Description Vendor Part Number Note CN302B WAFER 10...

Page 31: ...4 R22 22 OHM RMG 1W 5 2512 4728 220J 3 4 R23 10 OHM RMG 1 4W 5 1206 4725 100J 6 4 R24 10 OHM RMG 1 4W 5 1206 4725 100J 6 4 R25 10K RMG 1 16W 1 0603 1608 4723 103A P 4 R26 20K RMG 1 16W 1 0603 1608 4723 203A P 4 R27 180 OHM RMG 1 16W 1 0603 1608 4723 181A P 4 R28 100K RMG 1 16W 1 0603 4723 104A P 4 R29 16 OHM RMG 1 4W 1 1206 4725 160A 6 4 R30 3 3K RMG 1 16W 1 0603 1608 4723 332A P 4 R31 1K RMG 1 16...

Page 32: ...K RMG 1 16W 1 0603 1608 4723 103A P 4 R538 4 7K RMG 1 16W 1 0603 1608 4723 472A P 4 Capacitors Reference Designator Description Vendor Part Number Note C1 470uF CE 250V 20 RL 25X40 105C 157R 477M 5 T 4 C2 3300pF CC 1000V 10 RLT 10X4 X7R 125C 150N 332K K SG 4 C3 470uF CE 250V 20 RL 25X40 105C 157R 477M 5 T 4 C4 47uF CE 10V 20 RLT 5X11 105C 157C 476M K IUT 4 C5 4 7uF CE 63V 20 RLT 5X11 LOW ESR 105C ...

Page 33: ...000uF CE 35V 20 RLT 12 5X25 105C LOW ESR 157Q 108M K X TR 4 C34 100uF CE 35V 20 RLT 6 3X11 105C LOW ESR 157Q 107M K LUTR 4 C35 1000uF CE 35V 20 RLT 12 5X25 105C LOW ESR 157Q 108M K X TR 4 C36 0 1uF CC 50V 10 0805 1 2X2 0 150F 104K J BD 4 C37 1000pF CC 50V 5 0603 X7R 150F 102J P AC 4 C38 100uF CE 35V 20 RLT 6 3X11 105C LOW ESR 157Q 107M K LUTR 4 C39 1000pF CC 50V 5 0603 X7R 150F 102J P AC 4 C40 47u...

Page 34: ...5 1000pF CC 250V 5 0805 150R 102J J BD 4 C86 0 1uF CC 50V 10 0603 1608 1x2 150F 104K P AC 4 C87 0 1uF CC 50V 10 0603 1608 1x2 150F 104K P AC 4 C88 0 1uF CC 50V 5 0805 1 25X2 150F 104J P AC 4 C89 0 1uF CC 50V 5 0805 1 25X2 150F 104J P AC 4 C90 0 1uF CC 50V 5 0805 1 25X2 150F 104J P AC 4 C91 0 1uF CC 50V 10 0603 1608 1x2 150F 104K P AC 4 C92 0 1uF CC 50V 10 0603 1608 1x2 150F 104K P AC 4 C93 0 1uF C...

Page 35: ...FERRITE BEAD INDUCTOR BL01RN1A1F1J 1808 0680 0 4 L6 FERRITE BEAD INDUCTOR BL01RN1A1F1J 1808 0680 0 4 L7 CHOKE COMMON MODE 2X16UH 8A FT50 43 1806 3913 0 4 L8 WIRE JUMPER ROLLER FORM D 0 6MM 635N 0002 0 4 L10 WIRE JUMPER ROLLER FORM D 0 6MM 635N 0002 0 4 L11 WIRE JUMPER ROLLER FORM D 0 6MM 635N 0002 0 4 L12 WIRE JUMPER ROLLER FORM D 0 6MM 635N 0002 0 4 L13 CHOKE COMMON MODE 2X16UH 8A FT50 43 1806 39...

Page 36: ...5W 10V 2 AXIAL AT 483B 1009 2 4 Z2 ZENER 5W 10V 2 AXIAL AT 483B 1009 2 4 Z3 ZENER 1 2W 30V 5 SM 4837 3009 3 4 Z4 ZENER 1 2W 22VD RLZTE 1122D LL 34 ROHM 4837 22D1 3 4 Z5 ZENER 1 2W 5 6V SMD 4837 5V69 3 4 Z6 ZENER 1 2W 15V 5 SOD 123C MMSZ5245BT1G 4837 15V9 3 4 Z7 ZENER 5W 10V 2 AXIAL AT 483B 1009 2 4 Reference Designator Description Vendor Part Number Note Q1 2N2222 SMD MMBT2222ALT1G 4860 5410 3 4 Q...

Page 37: ... 3100 7791 0 3 4 HS1 SCREW M3X10 BLK 2904 3010 3000 4 HS1 HEATSINK SMPS 44X46 AL EXTRU 5400 3612 0 4 HS2 SCREW PAN HEAD B TITE 2 6X8 BLACK 2950 2608 3000 4 HS2 SCREW 3X8 TAPPING 2950 3008 3000 4 HS2 HEATSINK 214 20MM HIGH HOLE 5400 0831 0 4 HS3 SCREW PAN HEAD B TITE 2 6X8 BLACK 2950 2608 3000 4 HS3 SCREW 3X8 TAPPING 2950 3008 3000 4 HS3 HEATSINK 214 20MM HIGH HOLE 5400 0831 0 4 J1 WAFER 3P P7 92 1...

Page 38: ...disassembly or repair of the L1 Compact Power Stand 1 Top Cover Removal 1 1 Remove the two screws that secure the Power Stand handle to the top cover Lift off the handle 1 2 Lift up on the top cover Unplug the two cable harnesses from the I O board at connector CNxxx and from the line output card at connector CN302B Lift off the top cover Re assembly Note Be sure the woofer grilles are properly al...

Page 39: ...e the four knobs volume 1 volume 2 treble bass on the Input Output panel 2 3 Remove the following items from the top cover two screws at the microphone jack one screw at the RCA input jacks ring at the 3 5mm input jack hex nut at the 1 4 input jack 2 4 Turn over the top cover Remove the four screws that secure the I O board Lift off the board 3 Jack Input PCB Removal Note The jack input PCB is a p...

Page 40: ...en re installing the I O PCB assembly 4 Line Output Card Removal 4 1 Perform procedure 1 4 2 Remove the one screw at the RCA jacks and the plastic nut at the 1 4 jack 4 3 Remove the one screw that secures the line output card to the metal plate Lift out the card 5 Power Amplifier SMPS PCB Removal 5 1 Remove the six screws that secure the rear access panel Lift off the panel ...

Page 41: ...clears the upper part of the bracket 5 4 Slide the PCB assembly out through the access panel opening and disconnect the four wire harnesses Lift out the board Re assembly Note The power amplifier SMPS PCB assembly with the heatsink attached should slide up between the plastic cabinet housing and the metal cavity bulk head bracket Once it is in the correct loca tion secure it in place with the four...

Page 42: ... Lift out the switch Note The AC inlet and power switch are secured to the cabinet with glue to prevent air leaks Be sure to re seal the new parts 7 Woofer Removal 7 1 On the bottom of the Power Stand remove the four screws located toward the center of the plastic foot These are not the screws that hold the rubber feet in place 7 2 Remove the four screws that secure the bottom of the array connect...

Page 43: ...ton connectors from the woofer Re assembly Note Be sure to align the woofer grilles to the slots in the top cover and the plastic foot when replacing the foot L1 Compact Array Procedures 1 Grille Removal 1 1 Grasp the grille and carefully pull it away from the array Lift off the grille Re assembly Note Be sure there is suffi cient damping material in the array grooves to retain the grille and prev...

Page 44: ...s as close to the driver terminals as possible Re assembly Note Be sure to observe polarity when re connecting the driver wires There may be more than one wire per connection 3 Logo Removal 3 1 Perform procedure 1 3 2 Unbend the legs of the logo and lift it off the grille Array Extensions Note The array extensions are not repair able If damaged they must be replaced ...

Page 45: ...ut and verify that the LED functions and record the levels at which the trim LED s color states change The LED should turn green at 30 2dBV 31 6mVrms and red at 0 2 dBV 1Vrms 2 Channel 2 LED Gain Test 2 1 Set the channel 2 ToneMatch switch to the OFF position down 2 2 Using an balanced TRS cable apply a balanced 1kHz 50dBV 3 16mVrms sine wave to the channel 1 balanced 1 4 input jack Adjust the vol...

Page 46: ...ck 5 3 Sweep the audio input from 50Hz to 15kHz Measure the output level at the Main output jack on the back of the power stand using a balanced TRS cable Verify that the audio bandwidth is 50Hz to 15kHZ 1dB 6 Channel 2 ToneMatch Active EQ Fre quency Response Test 6 1 Set the channel 2 volume control to the MAXIMUM fully CW position Set the ToneMatch switch to the ON position up 6 2 Using a balanc...

Page 47: ...0 Watt load resistor to pins 1 and 2 the high frequencey array output connector CN1 8 5 Connect a 4 Ohm 50 Watt load resistor to pins 1 and 2 of the bass amplifier output connector CN2 These connectors are located near the bottom of the PCB assem bly 8 6 Re connect the AC line cord and turn on the power stand at the AC power switch 8 7 Apply a balanced 1kHZ 0dBV 1Vrms sine wave to the channel 2 ba...

Page 48: ...signal generator directly to the terminals of the transducer assembly under test 2 3 Apply a 65Hz 1Vrms sine wave to the transducer assembly 2 4 Listen carefully for any extraneous noises such as rubbing scraping or ticking Note To distinguish between normal sus pension noise and rubs or ticks displace the cone slightly with your fingers If the noise stays the same it is normal suspen sion noise a...

Page 49: ...control Internal shunt regulator connection to provide internal bias current during normal operation It is also used as the connection point for the supply bypass and auto restart compensation capacitor EXTERNAL CURRENT LIMIT X Pin Y M E and L package Input pin for external current limit adjustment and remote ON OFF A connection to SOURCE pin disables all functions on this pin VOLTAGE MONITOR V Pi...

Page 50: ...ve power supply voltage for channel 1 BOOT1 15 9 bootstrap capacitor for channel 1 OUT1 16 10 PWM output from channel 1 VSSP1 17 11 negative power supply voltage for channel 1 STABI 18 12 decoupling of internal stabilizer for logic supply n c 19 not connected VSSP2 20 13 negative power supply voltage for channel 2 OUT2 21 14 PWM output from channel 2 BOOT2 22 15 bootstrap capacitor for channel 2 V...

Page 51: ...al Revision History Date Revision Level Description of Change Change Driven By Pages Affected 5 09 00 Document released at revision 00 Service manual release All 5 09 01 Added power stand packing sheet Vendor change 9 ...

Page 52: ...SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE Bose Corporation The Mountain Framingham Massachusetts USA 01701 P N 318882 SM Rev 01 5 2009 P http serviceops bose com ...

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