Bose-502-bbc-sup1维修电路原理图.pdf

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1、Supplement1999 Bose CorporationECN: 25247Date Issued: 3/99SUPPLEMENTPart Number 170310-S1 Rev. 00502 ControllerThe following part numbers used in the 502 Controller as listed inTable 1 have changed.If you are replacing parts on an older unit with the removable front panel (see Figure 1),use the part

2、 list in the 502 Controller service manual. Use the part list in Table 2 for newerunits that have a one piece chassis (see Figure 2). The old style PCB with the heatsinkmounted to the board will not fit in the new style chassis. The new style PCB, with clip-onheatsinks, will fit into the old style c

3、hassis. Both PCBs are functionally identical. Refer tothe 502 Controller service manual, part number 170310 for all disassembly/assemblyand test procedures.Table 1. Changed Part NumbersItemNumberDescriptionPart NumberQty./Assy1Cover, Chassis, 50217300313Panel, Front, Rack Mount, 50217300414Screw-Tap

4、p, 4-40 x.312, BTN, XREC170285-0547PCB Assembly, 502143940-118Screw-Mach., 4-40 x .25, PAN, TORX171796-04512Harness Assy, 6-pin, Barrier143971313Screw, Tapp, 4-40 x.5, PAN, XREC170284-086-Nut, Hex, 8-32, Line Cord Ground Lug103237-8321-Chassis, 502, US/Canada Euro/UK/AUS/Japan173002-01173002-0211Par

5、t 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 PCBs are listed in the Electrical Part List.3. This part is critical for safety purposes. Failure to use a substitute

6、part with the same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards.Figure 1. 502 Controller Old Style Chassis(4)REFEURO/UK/AUS/JAPANVERSIONS:US/CANADAVERSIONS:REFREF3478813121RadioFans.CN 收音机爱 好者资料库SUPPLEMENTTable 2. Current Part NumbersFigure

7、 2. 502 Controller New Style Chassis5X6X2XC113C11411359414234567891011212Note: If you are replacing the PCB assembly (item 11), you must also order heatsinks (item 3)as the PCB is not supplied with them. The heatsinks clip onto the voltage regulators in thepositions shown in the drawing below.ItemNu

8、mberDescriptionPart NumberQty/Assy.Note1Screw, 6-32, Mach, Flat, Xrec 190623-00852Screw, Mach, 4-40 x.25, PAN, XREC103140-0493Clip, Heatsink18859924XFMR, US/Canada/Japan, 100V/120V EUR/AUS/UK, 220V/240V180128-1180128-21135Nut, Hex, 8-32, Keps118260-0836Insulator, 9.25x7.56x.015, D/C14394811, 37Switc

9、h, Power, Rocker, SPST143960138Lens, LED, Clear, Chassis14402319Chassis, 502, US/Canada Euro/UK/AUS/Japan198373-001198373-00211110Screw, Tapp, 4-40 x.375, PAN, XREC170284-06611PCB Assy, 502 (all versions)143940-211, 212Cover, Chassis, Controller198374-001113Line Cord, 3-Wire, USA/Canada 2-Wire, EU 2-Wire, Japan 3-Wire, UK 3-Wire, Aus17324217324317324417324517324611111314Tape, Foam, 0.501984081RadioFans.CN 收音机爱 好者资料库