27
button until TO lights up). The meter should
read approximately 90mVdc.
2.4 Simulate a closed CD door by placing
an object between S501's two black posts
(the CD door latch can be used). Select CD
(S413).
2.5 After the focusing operation is com-
pleted, press ERASE (S403). The meter
should change from its previous reading in
step 2.3 (it will drop). If not, remove power
and repeat the test.
2.6 Adjust R511 until the meter reads
between -7 to 17mVdc.
3. E/F Balance (E/F)
3.1 Advance the alignment fixture (ADV
button) to the E/F setting and set the
voltmeter to read DC voltage.
3.2 Simulate a closed CD door by placing
an object between S501's two black posts
(the CD door latch can be used). Load the
YEDS-18 test disc, select CD (S413), and
play track 2.
3.3 Press STORE (S411). This puts the unit
in the E/F balance mode. The time display
will stop.
3.4 Adjust R506 until the meter reads
between - 10 to + 50mVdc.
4. Tracking Gain (TG)
4.1 Shut the unit off.
4.2 Advance the fixture to the TG setting
and set the voltmeter to read AC voltage.
4.3 Simulate a closed CD door by placing
an object between S501's two black posts
(the CD door latch can be used). Load the
YEDS-18 test disc, select CD (S413), and
play track 2.
4.4 Adjust R510 until the meter reads
between 440 to 500mVrms.
CD ALIGNMENT PROCEDURES
(WITH FIXTURE)
Note: Some of these procedures require
the use of a CD alignment fixture (P/N
176318). Alternate procedures that do not
require a fixture begin on page 30. Refer to
Figure 11, CD Alignment Fixture Test
Setup. The fixture is required unless other-
wise specified. Refer to Figure 13 for
adjustment locations.
Test Equipment Needed
Digital Voltmeter
Frequency Counter
Sony Disc YEDS-18
Bose
®
CD Alignment Fixture (176318)
1. PLL Free Run Frequency (VCO)
Note: This test does not require a test disk
or the alignment fixture.
1.1 Connect the frequency counter to PCK
and ground.
1.2 Simulate a closed CD door by placing
an object between S501's two black posts
(the CD door latch can be used). Select CD
(S413).
1.3 Adjust R558 until the frequency counter
reads 4.320MHz
±
20kHz. (If the adjust-
ment is not done within 4 seconds, then CD
must be selected again).
2. Tracking Offset (TO)
Note: Remove any previously loaded test
disc. This test will not work with a disc
loaded.
2.1 Connect the cable from the test fixture
to connector P504 on the unit.
2.2 Connect a DC voltmeter to the positive
(+) and negative (-) terminals on the test
fixture.
2.3 Select TO on the fixture (press the ADV
CD TEST PROCEDURES
Summary of Contents for Lifestyle CD5 Series I
Page 6: ...5 Figure 1 CD5 Block Diagram Sheet 1 of 2...
Page 7: ...6 Figure 2 CD5 Block Diagram Sheet 2 of 2...
Page 19: ...18 See Figure 6 for a side view of this assembly Figure 3 Labelled Exploded View...
Page 30: ...29 Figure 12 Passive Filter Network and Test Setup...
Page 33: ...32 Figure 13 Digital PCB Adjustment Locations...
Page 36: ...35 Figure 14 Exploded View...
Page 62: ...61 T303 AM Front End Tuning Module INTEGRATED CIRCUIT DIAGRAMS TUNER FM Front End Module...
Page 64: ...63 U402 Microcontroller 68HC05C12 INTEGRATED CIRCUIT DIAGRAMS...
Page 65: ...64 U501 ASP LA9210M INTEGRATED CIRCUIT DIAGRAMS...
Page 66: ...65 U502 DSP LC7867 INTEGRATED CIRCUIT DIAGRAMS...
Page 67: ...66 INTEGRATED CIRCUIT DIAGRAMS U505 Microcontroller 68HC05P7 U506 D A Converter LC7883M...
Page 69: ...68 Figure 18 RC5 Schematic...
