Bose Wave music system Handbuch zur Fehlersuche

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Bose Wave music system Handbuch zur Fehlersuche
®
BOSE
WAVE
Refer to the Bose Wave radio/CD service manual, part number 250443, for schematics,
PCB layouts and part lists.
Symptom
Dead Unit.
Unit turns on/off by
itself.
Intermittent or
inoperable FM/AM.
Constant hum on
AM/FM.
Hum on all sources. Reversed C202 or C205.
The CD player is
inoperable or
intermittent.
The unit doesn't
respond to the
buttons located on
the CD door.
CD does not work.
CD skips.
©
2000 Bose Corporation
®
RADIO/CD TROUBLESHOOTING GUIDE
Reason(s)
1. Fuse F1 open.
2. Unseated J1.
3. Open power transformer.
CD door defective.
Depending on date code,
defective CF303 and C341, C342
or fractured solder joints on
CF303.
Refer to service bulletin 250443-
B3 for further information.
Power supply capacitor C205 may
be installed with reverse polarity.
Fractured solder joints on power
supply capacitor C16.
The PCB located in the CD door
assembly may be cracked.
1. CD mechanism lens dirty.
2. C16 has fractured solder joints
3. 13 conductor flex cable
defective.
4. CD mechanism failed.
5. U500 defective.
6. Switch on CD door assembly
defective.
1. C16 has fractured solder joints
2. 13 conductor flex cable
defective.
Action
1. Replace fuse F1.
2. Reconnect J1.
3. Replace power transformer.
Replace the CD door assembly.
1. In units built before 5/4/99,
replace CF303 with a 7.2 MHz
crystal, part number 250892-
001 and C341 and C342 with
27pF capacitors part number
133622-270. After soldering
CF303, be sure to clip the
leads.
2. In units built after 5/4/99,
check for fractured solder
joints on CF303 and make
sure the leads have been
clipped.
Replace capacitor C205 part
number 144000-471V.
Replace C202 or C205.
Re-solder power supply capacitor
C16.
Replace the CD door assembly,
part number 198608-010 platinum
white or 198608-002 graphite
grey.
1. Clean lens.
2. Resolder C16.
3. Replace the flex cable.
4. Replace the CD mechanism.
5. Replace U500.
6. Replace the CD door
assembly.
1. Resolder C16.
2. Replace the flex cable.
Part Number
250443-TG1
Rev. 00