Akai AC-M2 Service Manual page 13

FM IF Coil
Distortion
Factor
FM Local
OSC
FM Local
OSC
Low Range
Sensitivity
(See Note 1)
High Range
Sensitivity
Free Running
Frequency
Stereo
Separation
(Left > Right)
Stereo
Separation
(Right > Left)
12
87.4 MHz 20dB
109 MHz 20 dB
90 MHz 10 dB
106 MHz 10dB
98 MHz 60 dB
98 MHz 60 dB
IT201
98 MHz 60 dB IT203
distortion
SERVICE MANUAL AC-M2
Maximum
Noise Level
Repeat Step 1 and 2 as required.
Maximum
IOS output
e MODE switch to MONO
e FM MUTE switch to OFF
e Tunes only Noise without
interference from broadcasting.
e MODE switch to MONO
e FM MUTE switch to OFF
e MODE switch to MONO
e FM MUTE switch to OFF
e Turn the Tuning Dial
fully counter-clockwise.
Maximum
output
e MODE switch to MONO
e FM MUTE switch to OFF
e Turn the Tuning Dial
fully clockwise.
=i
e Maximum
output level
e THD: within
3% distortion
e Maximum
output
e THD: within
3% distortion
Repeat Step 5 and 6 as required.
SVR201 19 kHz + 50 Hz
Minimum
SVR202
output
Minimum
output
Confirmation
e MODE switch to MONO
e FM MUTE switch to OFF
e Tune to signal.
e MODE switch to MONO
e FM MUTE switch to OFF
e Tune to signal.
e MODE switch to MONO
e FM MUTE switch to ON
e Connect a Frequency Counter
between TP-5 and GND.
e MODE switch to STEREO
e FM MUTE switch to ON
e 10% Pilot (7.5 kHz diviation)
e 90% Main & sub
(67.5 kHz diviation)
eInput only Left ch.
e Minimum output of Right ch.
e Condition is same as Step 10.
e Input only Right ch.
e Minimum output of Left ch.