Test Procedures; Am Alignment Procedure; Am Tuner Adjustment Procedure; Fm/Mpx Tuner Adjustment - Bose 550 Service Manual

1. AM Tuner Adjustment Procedure

Note: Refer to the antenna placement
diagram Figure 1.
1.1 Connect an AM signal generator to an
AM loop antenna. Set the frequency ac-
cording to the AM alignment procedure
listed below.
1.2 Connect a voltmeter to the tape output
jacks on the rear panel.
1.3 Refer to the adjustment location chart
(Figure 2.) for the location of the tuning
coils called out in the AM alignment proce-
dure.
STANDARD
SIGNAL
GENERATOR
STANDARD
SIGNAL
GENERATOR

TEST PROCEDURES

AM Alignment Procedure

TEST
LOOP
Figure 1. Antenna Placement Diagram
10

2. FM/MPX Tuner Adjustment

2.1 Connect an FM signal generator to the
antenna terminals on the rear panel.
2.2 Connect a voltmeter to the tape output
jacks on the rear panel.
2.3 Refer to the adjustment location chart
(Figure 2.) for the location of the tuning
coils called out in the FM/MPX alignment
procedure.
2.4 Perform the tests listed on the next
page for the FM and MPX sections.
(PLAN VIEW)
60cm
(SIDE VIEW)
BAR
ANTENNA