Sanyo M7700L User Manual

TUNER ADJUSTMENT (continued)
FM MULTIPLEX ADJUSTMENT
Prior
to
the
adjustment,
set
the
unit
as
follows:
2.
Connect
the
VTVM
with
3.2
ohm
dummy
load,
distortion
@®
FunctionSwitch
..........00ce0e
ae
RADIO
(ON)
meter,
and
oscilloscope
to
the
external
speaker
jack
of
the
@
Band
Select
Switch
........
00000
cee
eee
eee
FM
left
channel
as
illustrated.
@ Mode Switch....... 2.20.00. es STEREO
@
ToneControl
2.0.0...
ee
eee
MAXIMUM
VTVM
@
VolumeControl
.......
2.2...
200
ee
eee
Center
@
L
EXT. SP 3.2 ~ 60
©:
Oscilloscope
19 kHz (V.C.0.) ADJUSTMENT
1. Connect the frequency counter to the twelfth pin in IC2
as illustrated. » Dummy Load
3.2 ohm
Frequency Counter Distortion Meter
3. Adjust the input measuring instruments as follows:
@ Stereo Signal Generator
2. Adjust the potentiometer (P1) until the oscillation * Pilot Signal... .... 7.5 kHz dev. {modulation 10%)
frequency
of
IC2
becomes
19
kHz
(£20
Hz).
*
Stereo
Signal........
67.5
kHz
dev.
for
main
signal
(modulation 90%)
* Modulation Frequency ..............-. 400 Hz
@ FM Standard-signal Generator
CHANNEL SEPARATION ADJUSTMENT * Signal Generator Frequency ............ 98 MHz
1.
Insert
the
3000hm
dummy
antenna
(balanced
type)
*
Signal
Generator
Output
...........0...
66
dB
through
the
FM
antenna
terminals
(TP1 and
TP2) in
the
Radio
Tuner
P.C.Board
as
illustrated.
4.
Perform
the
alignment
following
the
chart
on
the
next
page.
Stereo Signal Generator
Dummy Antenna
300 2.
—~10—

Sanyo M7700L Specifications

General

Brand	Sanyo
Model	M7700L
Category	Cassette Player
Language	English