Bose Lifestyle 5 Owners Manual

©1998 Bose Corporation
Bose¨ Lifestyle¨
Model CD5 Series I Music Center
Service Manual
Note: The first series CD5 can be distinguished from the later CD5V and CD5VII by the serial
number label located on the bottom of the unit. The CD5 will not have a V on the serial number
label, the CD5V will have a V, and the CD5V2 will have a V with the number 2 above the V.
Part Number 174798 REV 01 

1
PROPRIETARY 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.
Contents
Safety Information ............................................................................................................................ 2
Electrostatic Discharge Sensitive (ESDS)...

2
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. Use the following checks to perform these measurements:
A. Leakage Current Hot...

3
SPECIFICATIONS
General
Dimensions:2.5H x 15W x 9D (6 x 38 x 23cm)
Weight:3.7lb. (1.7kg)
Finish:Plastic, in-mold brushed aluminum finish
Power Input:Detachable power pack, 12VAC compatible with
each countrys power requirements
Serial Data Output:2-3.5mm stereo jacks, Tip: Serial data output,
Ring: +12Vdc turn on output.
Power:14 Watts max.
Input Impedance (@ 1kHz, max. volume):  5kW @ aux./video input, 100kW @ tape input
Output Impedance:600W @ Speaker A, B output, 1kW @ tape output
Distortion:£ 0.02%...

4
AM Electrical
CD Electrical
(Continued)
SPECIFICATIONS
Antenna Input:Binding posts
Usable Sensitivity:55dBuV/m (IHF standard test loop antenna)
Alternate Channel Selectivity:60dB
Adjacent Channel Selectivity:45dB
Image Rejection Ratio:40dB
S/N Ratio:50dB (@ 100dBuV/m)
THD:£ 1.0% (@ 100dBuV/m)
Frequency Response (@ 100dBuV/m):100Hz: -8dB
3kHz: -8dB
D/A Process:8x over sampling dual 16-bit D/A conversion
Maximum Output Level:4V
THD+N:0.05% (@ 1kHz, 0dB)
S/N Ratio:100dB (A-weighted)
Channel Separation:³...

5 Figure 1. CD5 Block Diagram Sheet 1 of 2 

6
Figure 2. CD5 Block Diagram Sheet 2 of 2 

7
CD TERMS
Basic Terms
Access: See track access.
Access Time: The length of time required to change tracks.
CD Mechanism: The mechanical assembly of components used to read information off of the
CD. It contains the optical pickup, sled assembly, disc motor, sled motor, and spindle.
Disc Motor: The motor which spins the disc.
Focus Actuator: The magnet and coil assembly that moves the optical pickupÕs lens up and
down.
Laser: A semiconductor light source similar to an LED that is used to read the data...

8
CD TERMS
Eccentricity: The extent to which the hole in the middle of the disc is not located in the geo-
metric center. In other words, the amount that the disc moves in and out as it rotates. Eccen-
tricity is measured as the distance between the center of the hole and the center of the disc (as
determined by the spiral tracks).
Mistracking: When a CD player fails to play the disc in a continuous manner. This may be
caused by a large enough optical defect (scratch, etc.) or by vibration.
Optical...

9
CD TERMS
Tracking Gain: The overall loop gain of the tracking servo. This controls how tightly the laser
is held in the center of the track. If the gain is too low, the player will have trouble with vibration
and eccentric discs, especially during track access. If the gain is too high the player will have
skips or mistracking with voids and scratches. Proper alignment is a compromise between
these two performance parameters.
Focus Gain: The overall loop gain of the focus servo. This controls how...