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Sharp GF-8989H Service Manual page 18

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AM
IF/RF ALIGNMENT
SIGNAL
GENERATOR
RECEIVER
ADJUSTMENT
DIAL
SETTING
REMARKS
+
Refer to Figure 19.
Exactly 455 kHz:
High end of dial.
Adjust for
il Adjust the MW
1
MW
IF
(GF-8989H)
{minimum capac-
best "IF"
IF transformers.
Exactly 468 kHz:
ity)
curve
(T101)
aif,
(GF-8989E)
I (T102)
Refer to Figure 21—1.}
Exactly 145 kHz.
Low end of dial.
if Adjust for
Adjust the LW
2
LW
!
(400 Hz, 30%, AM
(maximum capac-
maximum
oscillation coil (L107).
Band
|
=
modulated)
ity).
7
output.
_
:
4a
é
Coverage
Same as step 2.
Exactly 295 kHz.
High end of dial.
Same as step 2,
Adjust the LW
3
LW
(400 Hz, 30%, AM
(minimum capac-
oscillation trimmer
modulated)
ity).
1 (TC8).
2
-
"
ae
:
;
cae.
ae
ees
ade
ae
ata
es
Se yah an
Same as step 2.
Exactly 170 kHz.
170 kHz.
Same as step 2.
Adjust the LW
4
LW
(400 Hz, 30%, AM
| bar antenna coil (L102).
eee
E
=
i: modulated)
_
ees
=
|
See [Note
A } .
| abe s
Same as step 2.
Exactly 270 kHz.
270 kHz.
Same as step 2,
| Adjust the LW
5
LW
(400 Hz, 30%, AM
| antenna trimmer
modulated)
| (TCS).
i
1
6 | LW
Repeat steps 2, 3,4, and 5 until no further improvement can be made.
|
Same as step 2.
| Exactly 510 kHz.
: Low end of dial.
Same as step 2.
T Adjust the MW
7
MW
(400 Hz, 30%, AM
| (maximum capac-
oscillation coil (L106).
Band
modulated)
ity)
BT
heavens
Fe
=
a
ls
fo
oo
pee
>
fh ah Se
ame as step 2.
Exactly 1650 kHz.
High end of dial.
Same as step 2.
Adjust the MW
8
MW
(400 Hz, 30%, AM
{minimum capac-
i; oscillation trimmer
L modulated)
ity)
| (TC7).
Same as step 2.
Exactly 600 kHz.
600 kHz.
Same as step 2.
| Adjust the MW
9
MW
(400 Hz, 30%, AM
bar antenna coil (L102).
modulated)
See [Note A].
Tracking
+—
ae
_
+
a
-—
ected LESTE TRL
ee
Same as step 2.
Exactly 1400 kHz.
| 1400 kHz.
Same as step 2.
Adjust the MW
10
Mw
{400 Hz, 30%, AM
antenna trimmer
modulated)
| (Ta),
Repeat steps 6, 7, 8 and 9 until no further improvement can be made.
Refer to Figure 21—2. | Exactly 5.85 MHz.
r Low end of dial.
Same as step 2.
| Adjust the SW
~12
SW
(400 Hz, 30%, AM
(maximum capac-
| oscillation coil (L105).
°
'
Band
modulated)
ity)
i
Coverage
Same as step 12.
Exactly 18.5 MHz.
i High end of dial.
| Sameas step 2.
| Adjust the SW
13
Sw
(400 Hz, 30%, AM
(minimum capac-
oscillation trimmer
modulated)
ity)
|
(TC6).
4
-b
-t.
4
S
pe Sie a
ONS, OI BS
Same as step 12.
Exactly 6.5 MHz.
6.5 MHz.
Same as step 2,
Adjust the SW
14
SW
(400 Hz, 30%, AM
antenna coil (L101).
modulated)
|
Tracking
+
e
Same as step 12.
Exactly 16 MHz.
16 MHz.
Same as step 2,
Adjust the SW
15
SW
{400 Hz, 30%, AM
antenna trimmer
Modulated)
L
(TC3).
SW
Repeat steps 12, 13, 14 and 15 until no further improvement can be made.
-18—

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Gf-8989e