Sharp GF-9090H User Manual

FM ALIGNMENT CHART
(Refer to Figure 35)
RECEIVER
SIGNAL GENERATOR
CONNECTION TO
RECEIVER
INPUT SIGNAL
REQUENCY
TEST STAGE
DIAL SETTING REMARKS
ADJUSTMENT
Refer to Figure 30 Exactly 10.7 MHz.
(400 Hz, 30%, FM
modulated)
High end of dial.
(minimum capacity)
Adjust for
maximum output.
Adjust the FM
IF transformers
1.(T1)
2. (T2)
Low end of dial.
(maximum capacity)
Refer to Figures 31
and 34
Exactly 87.1 MHz
(400 Hz, 30%, FM
modulated)
Adjust for
maximum output.
Band
Adjust the FM
oscillation coils
(L3, L4).
Coverage
Same
as
step
2.
Exactly
108.5
MHz.
(400
Hz,
30%,
FM
modulated)
High end of dial.
(minimum capacity)
Same as step 2.
Adjust the FM
oscillation trimmer
(TC4).
Same as step 2. Exactly 88 MHz. 88 MHz
(400 Hz, 30%, FM
modulated)
Same as step 2.
Adjust the FM
RF coils (L1, L2).
Tracking | same as step 2. Exactly 108 MHz. | 108 MHz
(400 Hz, 30%, FM
modulated)
Same as step 2.
Adjust the FM
RF trimmer (TC 3).
Repeat steps 2, 3, 4 and 5 until no further improvement can be made.
OSCILLOSCOPE
10.7 MHz , 400Hz
FM SWEEP GENERATOR
FM IF
AMPLIFIER
O
TP 102
GROUND
O
TP2
GROUND
SWEEP TRIGGER“VAYY
Figure 30 FM IF ALIGNMENT EQUIPMENT CONNECTION
FM Switch (SW101D):ON |
FM SIGNAL
GENERATOR (Fig 54)
DUMMY EXT. SP
(SO30I, 302)
GROUND
AC V.T.V.M.
Figure 31 FM RF ALIGNMENT EQUIPMENT CONNECTION
16

Sharp GF-9090H Specifications

General

Brand	Sharp
Model	GF-9090H
Category	Stereo System
Language	English