– 20 –
FM Section
RADIO BAND button : FM
Volume : MIN
Adjustment Location : Tuner board (See page 21)
Mechanism deck
Tape speed adjustment
M691 (capstan/reel motor)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust part
Frequency display
reading on digital
voltmeter.
Confirmation
531kHz
Standard value : 0.5 – 1.5V
1,611kHz
Standard value : 4.6 – 5.8V
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 – 1
621kHz
CT3
1,404kHz
TUNER SECTION
AM Section
RADIO BAND button : MW or LW
Volume : MIN
FM RF signal
generator
22.5kHz frequency deviation by
400Hz signal.
Output level : as low as possible
telescopic
antenna
terminal
0.01
µ
F
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
set
47k
Ω
+
–
LINE OUT
level meter
0dB = 1
µ
V
Tape Speed Adjustment
Procedure :
– FWD Playback Mode –
set
test tape
WS-48B
(3kHz, 0dB)
frequency counter
LINE OUT
47k
Ω
1. Set to FWD playback mode.
2. Adjust M691 (capstan/reel motor) so that the frequency counter
reading becomes 3,000Hz.
Standard value : 2,970 to 3,030Hz
3. Set to REV playback mode.
Confirm the frequency should be within the standard value.
4. Confirm the frequency difference between beginning and the
end of tape should be within 1.5% (45Hz).
Adjustment Location : M691 (capstan/reel motor)
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust part
Frequency display
reading on digital
voltmeter
Confirmation
153kHz
Standard value : 0.2 – 0.9V
L4
279kHz
Adjustment value : 5.0V
Standard value : 4.9 – 5.1V
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 – 2
162kHz
CT5
261kHz
