Table of Contents
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Safety Information ............................................................................................................................ 2
Electrostatic Discharge Sensitive (ESDS) ..................................................................................... 3
Device Handling ............................................................................................................................... 3
Specifications ................................................................................................................................ 4-6
Disassembly/ Assembly Procedures ........................................................................................ 7-10
Figure 1. Cassette Door ................................................................................................................... 7
Figure 2. Cassette Deck View ........................................................................................................ 10
Test Procedures ........................................................................................................................ 11-12
AM Alignment ................................................................................................................................. 11
FM Alignment .................................................................................................................................. 11
Cassette Deck Adjustment ............................................................................................................ 11
Figure 3. AM Test Setup ................................................................................................................ 12
Adjustment Point Figures ............................................................................................................. 13
Figure 4. RV502, RV501, P100/ J600 ............................................................................................ 13
Figure 6. CV2, RV503, RV504, Erase Head and P/R Head Azimuth ............................................. 13
Figure 5. T101, T102, T103, CV1................................................................................................... 13
Figure 7. RV505, RV506 ................................................................................................................ 13
Part List Notes ................................................................................................................................ 14
Main Assembly Part List ................................................................................................................ 15
Figure 8. Exploded View ................................................................................................................ 16
Figure 9. Exploded View ................................................................................................................ 17
Cassette Deck Part List ................................................................................................................. 18
Figure 10. Cassette Deck ............................................................................................................... 18
Electrical Part List ..................................................................................................................... 19-30
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
PROPRIETARY INFORMATION
1
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Page 1: Table Of Contents
® 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. -
Page 2: Safety Information
SAFETY INFORMATION 1. Parts that have special safety characteristics are identified by the symbol on schematics or by special notes in the part lists. 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. -
Page 3: Electrostatic Discharge Sensitive (Esds)
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. -
Page 4: Specifications
SPECIFICATIONS Size: 18" W x 10 1/2"H x 7 1/2"D Weight: 22 Lb (10kg) Antenna: External FM Antenna (300Ω) FM collapsible whip Internal AM loop stick Case: All Plastic Stereo/ Mono Switching: Automatic, triggered by FM carrier or pilot Driver Compliment: One 4.5"... - Page 5 FM SPECIFICATIONS (Continued) (40dBu input): 40dB THD at Line Output at 1kHz, 75kHz dev, Stereo: (66dBu Input): 1% Selectivity (IHF): 50dB ±400kHz (46dBu input): 40dB Capture Ratio (IHF): (66dBu Input): 3.5dB Stereo Separation: 30dB (1kHz, 75kHz dev): (66dBu Input): 25db (66dBu Input): 220 ±50mV Output Level: AM SPECIFICATIONS...
- Page 6 CASSETTE DECK SPECIFICATIONS (Continued) Record A.L.C. Range (at 3% THD): 26dB Record A.L.C. Compression at 0 VU 300 - 85mV Threshold Rel all AUX in .5V): A.L.C. attack time: 2mSec A.L.C. release time: 20Secs Aux input level for Dolby ref output at 350mV line output: Aux.
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Page 7: Disassembly/ Assembly Procedures
DISASSEMBLY/ ASSEMBLY PROCEDURES Note: Numbers in parentheses correspond 4.2 Lower the rear of the top cover until the to the item call outs in Figure 8 and 9. screw holes in the top cover line up with the screw holes in the matrix. 1. - Page 8 DISASSEMBLY/ ASSEMBLY PROCEDURES 8. Control PCB Replacement 10.4 Replace the single screw (29) that is located in the front right of the control cover 8.1 Attach the three wire connectors (two (26). on later version units) to the control PCB. 10.5 Move the digital PCB onto the chassis 8.2 Replace the three screws (29) that and replace the three screws (29) that...
- Page 9 DISASSEMBLY/ ASSEMBLY PROCEDURES terminals. 13.2 Remove the belt attached to the motor. 18.2 Place the tweeter into the chassis (10). Replace the four screws (29) that 13.3 Remove the three screws (2) that secure the tweeter to the chassis. secure the motor to the cassette deck. Remove the wires attached to the motor.
- Page 10 DISASSEMBLY/ ASSEMBLY PROCEDURES come from the matrix. six screws (45) that secure the amplifier PCB to the bottom cover. 20.5 Press the auxiliary switch spacer (28) onto the aux switch. Press the power 23.2 Place the bottom cover onto the switch spacer (24) onto the power switch.
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Page 11: Test Procedures
TEST PROCEDURES 3.2 Adjust T103 (IFT) for maximum output AM Alignment measured at the auxiliary output. (See Figures 3, 5 and 6) FM Alignment 1. Tuning Bias Alignment (See Figure 5) 1.1 Connect the positive side of a dc meter to pin 8 of P101/ J101 (tuning bias) and the 4. - Page 12 TEST PROCEDURES 7.2 Adjust the cassette deck's motor to 3kHz measured at the auxiliary output. 8. Dolby Level Adjustment 8.1 Insert a 400Hz, 0db 200nWb/m test tape (MTT-150) into the cassette deck and press play. 8.2 Adjust RV503 (left channel) and RV504 (right channel) for 300, +36, -32 mV mea- sured at the auxiliary output.
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Page 13: Adjustment Point Figures
ADJUSTMENT POINT FIGURES Figure 4. RV502, RV501, Figure 5. T101, T102, T103, CV1, P100/ J600 P101/ J101 Figure 6. CV2, RV503, RV504, Figure 7. RV505, RV506 Erase Head and P/R Head Azimuth... -
Page 14: Part List Notes
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 located on the PCB are listed in the part list. 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. -
Page 15: Main Assembly Part List
MAIN ASSEMBLY PART LIST Figures 8 and 9 Item Part Descripton Note Number Number 136744 Control PCB 123802 Tweeter 130698 Woofer 126328 Top Cover 140711 126329 Tweeter Panel 126330 Woofer Panel 126331 Front Panel, Aluminum Plate 126340 Cover, Woofer 126332 Cover, Bottom 140715 126333... - Page 16 Figure 8. Exploded View...
- Page 17 Figure 9. Exploded View...
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Page 18: Cassette Deck Part List
Figure 10. Cassette Deck CASSETTE DECK PART LIST Description Part Number Cassette Deck, Complete 126390 Record/ Play Head 126474 Erase Head 126475-1 DC Motor 126476 Pinch Roller Assembly 126560 Belt, Lower, Play 126568 Belt, Middle, Motor 126569 Belt, Top, FF/Rew 126570 Idler 126534... -
Page 19: Electrical Part List
ELECTRICAL PART LIST Resistors Reference Description Part Number Note Designator 0 Ω Jumper, Misc 126104 R103 100k, 10%, 1/2W 126105 R104, 108, 131, 1k, 5%, 1/8W, 126106 132, 135, 146, 147, Metallic, Chip 201, 205, R206, 208, 301, 1k, 5%, 1/8W, 126106 302, 329, 330, 331, Metallic, Chip... - Page 20 ELECTRICAL PART LIST Resistors Reference Description Part Number Note Designator R149 15Ω, 5%, 1/8W 126163 Metallic, Chip R151, 313, 654 2.7k, 5%, 1/8W 126164 Metallic, Chip R202 560Ω, 5%, 1/8W 126166 Metallic, Chip R207, 507, 508, 1.8k, 5%, 1/8W 126169 527, 528 Metallic, Chip R209...
- Page 21 ELECTRICAL PART LIST Resistors Reference Description Part Number Note Designator R424, 457, 481 1k, 5%, 1/4W, 126197 Carbon R425, 426 2k, 2%, 1/4W, 126198 Carbon R427, 460, 471 33k, 5%, 1/4W, 126199 Carbon R428, 430 24k, 2%, 1/4W, 126200 Carbon R429, 431, 451, 453 100k, 5%, 1/4W, 126201 Carbon...
- Page 22 ELECTRICAL PART LIST Resistors Reference Description Part Number Note Designator R497 8.2K, 2%, 1/4W, 140636 Carbon R498 16k, 2%, 1/4W, 126140 Carbon R498 9.1k, 2%, 1/4W, 140637 Carbon R501, 505, 511, 512 56k, 5%, 1/8W, 126142 Metallic, Chip R503, 504, 641, 10Ω, 5%, 1/8W, 126144 642, 1000...
- Page 23 ELECTRICAL PART LIST Capacitors Reference Description Part Number Note Designator C101, 103,104,105, .047mf, 25V, Cer, 126000 114, 122, 130 Chip C102, 113, 120, 220mf, 16V, El 126001 219, 225, 424, 448, 449, 529, 579, 581 C106, 115, 140, .01mf, 50V, Cer, 126002 202, 203, 204, 208, Chip...
- Page 24 ELECTRICAL PART LIST Capacitors Reference Description Part Number Note Designator C220, 221 22pf, 50V, Cer, 126025 Chip C226 1000pf, 12V, Cer 126027 C303, 320, 463, 22uf, 16V, El 126029 527, 578 C304 3.3uf, 16V,Tantalum 126030 C305, 403 .47uf, 50V, 126031 MP/Mylar C306, 310, 311, .015uf, 50V, Mylar...
- Page 25 ELECTRICAL PART LIST Capacitors Reference Description Part Number Note Designator C528, 531 560pf, 50V, Cer, 126087 Chip C534, 535 4.7uf, 16V, Tantalum 126089 C536, 537 .033uf, 50V, 126090 MP/Mylar C540, 544 .68uf, 50V, 126092 MP/Mylar C541, 545 .22uf, 50V, 126093 MP/Mylar C542, 546 1uf, 35V, Tantalum...
- Page 26 ELECTRICAL PART LIST Transistors Reference Description Part Number Note Designator Q101, 501, 502, 2SD1328, Chip 126218 507, 508, 509, 510, 511, 700 Q102, 103, 105, 2SD601, Chip 126220 108, 111, 503, 504, 505, 506, 513, 515, 516, 517, 521, 523 Q104,109, 205 2SA1235, chip 126221...
- Page 27 ELECTRICAL PART LIST Diodes Reference Description Part Number Note Designator D104, 412 Zener, 5.6V, 126245 RD5R6EB3 D106, 404, 509 10E1 126246 D108 MA153/TY, chip 126470 D201 Zener, 6.2V, 126247 RD6R2EB3 D202 1S953 126248 D204 Zener, 9.1V, R 126249 D9R1EB3 D205 Zener, 6V, (LN) 126250 HZ6C-2L...
- Page 28 ELECTRICAL PART LIST Transformers and Filters Reference Description Part Number Note Designator T101 FM IF 126265 T102 AM OSC 126266 T103 AM IF 126267 T104 126273 T401 Power transformer 126268 3, 4 143592 3, 5 T501 OSC, 100kHz 126269 T502, 503 Trap, 100kHz 126270 T504, 505...
- Page 29 ELECTRICAL PART LIST Miscellaneous Reference Description Part Number Note Designator J401-J408 Wiring sub 126305 assembly (4P-4P) J405 Wiring sub 126306 assembly (4P) J501, 502 Jack, Aux In, Line 126314 J600 Wiring sub 126307 assembly J601 Wiring sub 126308 assembly (lOP) J602 Wiring sub asembly 126309...
- Page 30 ELECTRICAL PART LIST Miscellaneous Item Number Description Part Number Note Chassis, bass- 126489 reflex enclosure Woofer (SP3) 123804 Spacer 126490 Radiator heat sink 126343 Heat sink gasket 126350 Wiring sub 126306 assembly (J405) Spacer - bottom 126353 cover Spacer, acoustic 126365 material Holder...
- Page 32 ® ® ® Acoustic Wave Music System Service Manual © 1997 Bose Corporation Part Number 142862...
- Page 33 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE ® ® BOSE CORPORATION THE MOUNTAIN FRAMINGHAM, MASSACHUSETTS USA 01701 P/N 142862 REV. 01 1/97: FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008...