Marantz SR-66 - ALIGNMENT PROCEDURES (continued); AM IF, RF, and Tuning Voltage Alignment; FM IF Alignment

3. AM IF, RF and Tuning Voltage Alignment
Preparation :
1.
Output
of
Signal
Generator
should
not
be
higher
than
necessary
to
obtain
an
optimum
output
reading.
2. Signal Generator Modulation : 30%
3. Switch : Press to AM.
Receiver
Frequency on
the Display
Signal
Generator
Frequency
1000 kHz
(EUR : 999 kHz)
(400 Hz, Mod.)
600 kHz
(EUR : 603 kHz)
(400 Hz, Mod.)
1400 kHz
(EUR : 1404 kHz)
(400 Hz, Mod.)
1000 kHz
(EUR : 999 kHz)
(400 Hz, Mod.)
520 kHz
520 kHz
(EUR : 522 kHz) (EUR : 522 kHz)
DC Voltmeter to | L102 DC Voltage
TP3 (AM OSC Coil) 1.0~1.2V
1710 kHz 1710 kHz DC Voltmeter to
(EUR : 1611 kHz) | (EUR: 1611 kHz) | TP3 .
4. FM IF Alignment
TC102 DC Voltage
(ANT Trimmer)
Preparation
8.5~9V
1.
Signal
Generator
output
should
be
no
higher
than
necessary
to
obtain
an
optimum
output
reading.
2. Switch : Press to FM.
3. Signal generator deviation : 75 kHz.
4.
Be
sure
to
disconnect
FM
line
cord
antenna
during
alignment.
Adjustment
point
Equipment
Connection
Maximum
reading
Place at a noninterfer-| AC voltmeter to
ence spot around 1000} TAPE OUT jack.
kHz({EUR 999 kHz)
EUR (603 kHz) Same as L101 Same as
Step 1. (ANT Coil) Step 1
Same as TC101 Same as
Step 1. (ANT Trimmer) | Step 1
600 kHz
DC Voltmeter to | VR101 DC Voltage
TP5 (AM ADJ) 200 mV
EUR (1404 kHz)
1400 kHz
EUR (999 kHz)
1000 kHz
Voltage
ADJ
Receiver
Frequency on
the Display
98.1 MHz
(EUR : 98.0 MHz)
Signal
Generator
Frequency
98.1 MHz
(EUR : 98.0 MHz)
(1 kHz, Mod.)
Adjustment
point
Equipment
Connection
Minimum
distortion
L104
(FM DETECT -B
Coil)
Distortion |
meter to
TAPE OUT jack
98.1
MHz
98.1
MHz
DC
Voltmeter
to
|
VR102
Zero
reading
on
Z
(EUR
:
98.0
MHz)
|
(EUR
:
98.0
MHz)
|
TP5
|
(FM
ADJ)
AC
voltmeter
(1
kHz,
Mod.)
:
with
SSG
output
level
of
28dBf
98.1
MHz
98.1
MHz
~
|
DC
Voltmeter
to
|
L103
Zero
Voltage
2
(EUR
:
98.0
MHz)
|
(EUR
:
98.0
MHz)
|
TP2
(R112)
(FM
DETECT-A
|
reading
on
DC
Coil) Voltmeter
29
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