Bose-3.2.1-Service-Manual 电路图 维修手册.pdf

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1、1 CONTENTS Safety Information.2 Warranty.2 Product Description.3 Accessories .3 Specifications. 4-7 Electrostatic Discharge Sensitive (ESDS) Device Handling .8 Part List Notes.8 Frequently Ordered Items .9 Packaging Part List, 321 Series II Home Entertainment System (see Figure 1).10 Figure 1. 321 S

2、eries II Home Entertainment System Packaging View .11 Packaging Part List, 321 Series II Accessory Kit (see Figure 2) .12 Figure 2. Accessory Kit Exploded View.12 Main Part List, 321 Series II Console Assembly (see Figure 3).13 Figure 3. 321 Series II Console Exploded View .14 Main Part List, Bass M

3、odule (see Figure 4).15 Figure 4. Bass Module Packaging View .15 Main Part List, Standard 321 Array Assembly (see Figure 5) .16 Figure 5. Standard 321 Array Assembly Exploded View .16 Main Part List, 321 GS Array Assembly (see Figure 6) .17 Figure 6. 321 GS Array Assembly Exploded View.17 Electrical

4、 Part Lists. 18-41 Console Main PCB Assembly . 18-29 Console Tuner PCB Assembly . 30-33 Bass Module DSP/Amplifier PCB Assembly. 34-40 Bass Module Input/Output PCB Assembly.41 Disassembly Procedures . 42-47 Console Procedures . 42-45 Bass Module Procedures . 45-46 Standard Satellite Array Procedures

5、.47 GemstoneTM Satellite Array Procedures.47 Test Procedures . 48-52 Figure 7. Console Main PCB Layer 1 Topside Etch Layout Diagram .53 Figure 8. Console Main PCB Layer 2 Ground Plane Layout Diagram.54 Figure 9. Console Main PCB Layer 3 Power Plane Layout Diagram.55 Figure 10. Console Main PCB Layer

6、 4 Bottom Etch Layout Diagram .56 Figure 11. Console Tuner PCB Topside Etch Layout Diagram .57 Figure 12. Console Tuner PCB Bottom Side Etch Layout Diagram.58 Figure 13. Bass Module DSP/Amplifier PCB Topside Etch Layout Diagram .59 Figure 14. Bass Module DSP/Amplifier PCB Bottom Side Etch Layout Dia

7、gram.60 Figure 15. Bass Module Input/Output PCB Topside Etch Layout Diagram.61 Figure 16. Bass Module Input/Output PCB Bottom Side Etch Layout Diagram .61 Appendix. 62-66 Obtaining System Information from the Media Center Display.62 DVD Lock options . 63-64 Setting a password and restriction level .

8、63 DVD Lock Bypass.64 321 Series II System Date of Manufacture Information.64 Glossary of Terms.65 Service Manual Revision History.66 RadioFans.CN 收音机爱 好者资料库 2 SAFETY INFORMATION 1. Parts that have special safety characteristics are identified by the symbol on schematics or by special notes on the p

9、arts 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 c

10、hecks 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 American National

11、 Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) UL6500 / UL60065 / IEC 60065 paragraph 9.1.1. With the unit AC switch first in the ON position and then in OFF position, measure from a known earth ground (metal waterpipe, conduit, etc.) to all expo

12、sed metal parts of the unit (antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.), especially 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 t

13、he outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED 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 prong

14、s 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. When testing 3 wire products, the resistance measured to the product enclosure should be between 2 and infinite MOhms.

15、 Also, the resistance measured to exposed input/output connectors should be between 4 and infinite MOhms. When testing 2 wire prod- ucts, 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 possibil

16、ity of a shock hazard, and the unit must be repaired and rechecked before it is returned to the customer. CAUTION: The Bose 321 Series II Home Entertainment System contains no user-serviceable parts. To prevent warranty infractions, refer servicing to warranty service stations or factory service. PR

17、OPRIETARY 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

18、. The Bose 321 and 321GS Series II Home Entertainment Systems are covered by a limited 1-year transferable warranty. WARRANTY RadioFans.CN 收音机爱 好者资料库 3 The 321 Series II Home Entertainment System is the replacement for the 321 and 321GS Series I Home Entertainment Systems. It uses the same system co

19、ncept of a console with a dedicated bass module with TrueSpaceTM signal processed surround sound from 2 satellite arrays. The console will play video DVDs, DVD-R and DVD+R discs, audio CDs, Video CDs, CD-R and CD-RWs, and MP3 CDs. MP3 disc tracks must be burned in a single closed session. The MP3 di

20、sc format must be ISO9660 and each file must have an “.mp3” extension and have no other periods in the filename. The bass module electronics house some signal processing, power supplies and amplification for the console. The console and bass module are not compatible with the 321 Series I con- sole

21、and bass module. They cannot be used to replace the other Series components. The speaker arrays are the same as currently used on the 321 and 321GS systems. The system includes an enhanced universal type IR remote control similar to that used on the 321GS Series I system. The remote is non-repairabl

22、e. The 321 Series II uses standard 321 arrays with a cloth grille. The arrays are graphite in color. The 321GS Series II systems use the GemstoneTM arrays in both graphite and silver. The array cable color matches the array color. The console for both 321 and 321GS systems is graphite with a silver

23、front bezel. The bass module is graphite, as is the IR remote control. PRODUCT DESCRIPTION ACCESSORIES The Bose 321 and 321GS Series II Home Entertainment Systems shelf speakers are com- patible with Bose mounting accessories, including the UB-20 wall brackets, UFS-20 floor stands and UTS-20 table s

24、tands. RadioFans.CN 收音机爱 好者资料库 4 SPECIFICATIONS System Specifications: Power Rating: US/Canada:120VAC, 60 Hz, 300W Europe/UK/Aus:220-240VAC, 50/60 Hz, 300W Japan:100VAC, 50/60 Hz, 300W Dual Voltage:115/230VAC, 50/60 Hz, 300W Console Inputs:VIDEO, CAB/SAT, AUX Video Outputs:Composite Video, S-Video,

25、Component Video External Antennas:FM, 75 Ohm F-Connector (PAL, Europe) AM Loop, 2.5 mm mono connector Maximum Ambient Temperature:45 degrees C Low Frequency Cut-off (typical): Arrays:321 Array Cube: 180 Hz 321GS Array Cube: 212 Hz Bass Module:45 Hz Woofer Impedance:1.5 Ohms nominal DC resistance sin

26、gle woofer Weights: 321 Series II Packed System:47.9 lb (21.7 kg) 321GS Series II Packed System:44.1 lb (20.0 kg) Console:6.8 lb (3.08 kg) Bass Module:24.9 lb (11.77 kg) 321 Arrays, each:3.0 lb (1.40 kg) 321GS Arrays, each:1.1 lb (0.50 kg) IR Remote Control (batteries installed):0.44 lb (0.20 kg) Di

27、mensions: Console:13.8 x 10.0 x 3.2 inches (34.9 x 25.3 x 8.2 cm) Bass Module:14 x 7.5 x 20.1 inches (35.6 x 18.4 x 51.1 cm) Bass Module internal volume:1205 cubic inches (19.7 liters) 321 Arrays:7.9 x 5.3 x 3.4 inches (200 x 134 x 86 mm) 321GS Arrays:5.6 x 2.6 x 4.2 inches (142 x 65 x 106 mm) IR Re

28、mote:9.0 x 2.6 x 1.2 inches (229.6 x 64.8 x 31.2 mm) Distortion and Noise:-78 dB THD+N, unweighted, 22-22 kHz for a 1 kHz signal at -1 dB -90 dB THD+N, unweighted, 22-22 kHz for a 1 kHz signal at -10 dB Dynamic Range:-90 dB THD+N, unweighted, 22-22 kHz for a 1 kHz signal at -60 dB Distortion: 0.1% 0

29、.5 W Output Noise: 400 mVrms, A-weighted 5 System Specifications (continued): Noise when Muted: 400 uVrms, A-weighted DC Offset: 40 dB 1 kHz, 30 dB 10 kHz, stereo mode Console Specifications: Compression Formats Supported for discs inserted into the DVD/CD drive:AC-3, MP3, DTS, MPEG-1 (VCD), MPEG-2

30、Compression Formats NOT Supported for discs inserted into the DVD/CD drive:SACD Format (Sony), MLP Digital Formats Supported for sources connected to the digital inputs:AC-3, DTS, AAC (Japan only), PCM Analog Input Characteristics: Maximum source signal for ADC full scale:2 Vrms Minimum source signa

31、l for ADC full scale:200 mVrms Input Impedance:100k Ohms nominal +/- 10% Input Coupling:AC coupled to remove source DC offset Output level from FM (mono, 75 kHz dev):0.3 Vrms nominal Output level from AM (30% mod, 100 dBuV): 0.2 Vrms nominal Source Impedance at 1 kHz:1560 Ohms nominal, +/- 10% Outpu

32、t Coupling:AC S/PDIF Coaxial Input Characteristics: Sampling Rates Accommodated:38 kHz, 44.1 kHz, 48 kHz Number of bits recognized:16, 20 and 24 Input Impedance:75 Ohms +/- 10% Error Checking and Handling:Implements full error checking and handling, considering CRC, validity bit, loss of lock, parit

33、y error, and bi-phase error. Input Coupling:AC SPECIFICATIONS 6 Console Specifications (continued): Optical S/PDIF Input Characteristics: Sampling Rates Accommodated:38 kHz, 44.1 kHz and 48 kHz Number of bits recognized:16, 20 and 24 Error Checking and Handling:Implements full error checking and han

34、dling, considering CRC, validity bit, loss of lock, parity error, and bi-phase error. Input Connector:TOSLINK Volume Control:0 dB to full attenuation in 100 steps (100 - 0 indi- cated). 0 volume causes the amplifiers to mute. Film EQ:Selectable on or off Tone Controls: Treble Control:Range of -12 to

35、 +12 dB in 11 steps Bass Control:Range of -12 to +12 dB in 18 steps FM Tuner Performance (per IHF-T-200): Channel Spacing:US/Can/Dual Voltage: 200 kHz Euro/UK/Aus:50 kHz Japan:100 kHz Band Limits: US/Can/Dual Voltage:87.7 MHz - 107.9 MHz Euro/UK/Aus:87.50 MHz - 108.00 MHz Japan:76.00 MHz - 90.00 MHz

36、 De-emphasis: US/Can/Dual Voltage:75 usec Euro/UK/Aus/Japan:50 usec Mono Sensitivity (30dB (S+N+D)/(N+D): US/Can/Dual Voltage:(98 MHz) 15dBf nom/17.5 dBf limit Euro/UK/Aus/Japan:20 dBf nom / 25 dBf limit Euro/UK/Aus:(98 MHz) 16.0 dBf nom / 18.5 dBf limit Japan:(83 MHz) 15.0 dBf nom / 17.5 dBf limit 50 dB Stereo Quieting Sensitivity: US/Can/Dual Voltage (98 MHz):38 dBf nom / 41.5 dBf limit Euro/UK/Aus (98 MHz):39.0 dBf nom / 42.5 dBf limit Japan (83 MHz):38 dBf nom / 41.5 dBf limit Signal to Noise Ratio 65 d