Pioneer F-93 Service Manual page 30

F -93
Step
No.
Adjustment Title
FM SG
(1KHz
±
75KHz dev.)
F-93 Indication
Adjustments
Frequency(MHz)
and condition
Level(d13/N)
Adjustment
Point
Specifications
14
Tertiary monaural distortion
adjustment [NORMAL]
98
[MONO)*7
60
98MHz
[NORMAL] *6
VR210
Minimize TP-7 AC output (80
mV or less).
15
VR206
Open between TP-1 and 2.
Minimize distortion (tertiary)
with VR206.
16 T203
Minimize distortion (secondary)
with T203.
17
Repeat steps 15 and 16 if the distortion requirements are not satisfied (0.2% or greater).
18
Tertiary monaural distortion
adjustment
[SUPER NARROW]
98
EMON0J*7
60
98MHz
[SUPER NARROM*6
VR207
Minimize distortion (0.4% or
less).
:
19
Stereo distortion adjustment
[NORMAL]
98
[Lch only[*8
60
98MHz
[NORMAL)*6
T101, T102,
T103
Adjust VR204 to center. Adjust
T101, T102 and T103 within ±
45 to minimize distortion.
20 VR204
Minimize distortion (0.4% or
less).
21
Stereo distortion adjustment
[SUPER NARROW)
98
[Lch onlyr8
60
98MHz
[NORMALJ*6
T104, T105,
T106
Adjust VR205 to center. Adjust
T104, T105 and T106 within
±45 ° to minimize distortion.
22
98
[Lch only)*8
60
98MHz
[SUPER NARROM*6
VR205
Minimize distortion
(2%
or less).
23
Separation adjustment
98
[Lch only[*8
60
98MHz
[NORMAL1*6
VR604
Maximize L to R separation
(45d8 or greater).
24
98
[Rch only]
VR605
Maximize R to L separation
(45dB or greater).
25
,
98
[Lch only]*8
60
98MHz
[SUPER NARROVV]*6
VR607
Maximize L to R separation
(30dB or greater).
26
98
[Rch only[*8
VR606
Maximize R to L separation
(30dB or greater).
27
Noise reduction separation
adjustment
98
[Lch only[*8
60
98MHz
ENORMALI*6
VR301
Measure the output level of the
output (FIXED) jacks when the
MPX NR is OFF. Turn ON the
MPX NR. Adjust to a level that
is +1dB higher in relation to
when the MPX NR is OFF.
Turn OFF the MPX NR after
adjusting.
28
98
[10kHz,Lch only[*9
- 60
98MHz
[NORMAL]*6
VR302
29 S-MPX distortion adjustment
98
[Lch only]*8
60
98MHz
[SUPER NARROW[*6
[S-MPX ON]*10
VR209
Minimize the distortion (2.5% or
less).
43