Pioneer F-93 Service Manual page 31

Step
No.
Adjustment Title
FM SG (1KHz ± 75KHz dev.)
F-93 Indication
Adjustments
Frequency(MHz)
and condition
Level(dBpV)
Adjustment
Point
Specifications
30
S-MPX separation
adjustment
98
[Lch only1*8
60
[SUPER NARROM*6
[S-MPX 01s11*10
VR211
Adjust to optimum separation
(26dB or more).
31
VR932
32
Repeat steps 30 and 31 if the separation requirements are not satisfied (26dB or greater).
33
S meter adjustment
98
90
98MHz
[NORMAL]6
VR102
Adjust S meter to 85dB.
34
50 VR101
Adjust S meter to 50dB,
35 80
VR102
Adjust S meter to 80dB.
* 4 : Set the FM SG "LEVEL (d13/N)" so that the voltage between TP-15 and GND is approx. 3V to 5V.
* 5 : Measure the output level of the output (FIXED) jacks when the input signal level from the FM antenna terminal
is
60
dBpV.
Lower the FM SG "LEVEL (dByV)" so that the output level decreases about 3 dB. And adjust in this state.
* 6 : Press the IF BAND button and select the IF BAND shown in the brackets [ 1.
* 7: Set the TONE signal mode of the MPX SG to "MONO".
* 8: Set the TONE mode of the MPX SG to the channel shown in the brackets [ I.
* 9 : Set the MPX SG tone signal to 10KHz and the TONE mode to "Lch".
* 10: Press the S-MPX button and turn ON the S-MPX.
44