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A-711/711L
CIRCUIT DESCRIPTION
IC5, 6: TA8409S
(X09-3142-71)
Volume
motor drive IC
Block diagram
Vcc,
mo
Vg
Vref
Standby
circuit
circuit
See
Vret
@ Pin No, 4: no use
Truth table
OUTPUT
MODE
Pin No. of 1C5, 6
Motor
mode
«;
High impedance
input "'H"' active
26
A-711/711L
ADJUSTMENT
Tuner unit
If alignment point
is "-", Confira
the value.
if aot, replace the frontend
pack and [C2(X05:PLL),
Pic
THPUT
OUTPUT
TUNER
ALIGRYENT
ITEM
SETTINGS
SETTINGS
SETTINGS
POINTS
ALIGN FOR
PIG.
FM
SECTION
SELECTOR:
FM
Connect a BC
BAND FDGE
-
voltacler between
87, Sullz
-
1.67
(a)
@
TP1OCVT) and zea
°
Connect a DC
BAND EDGE
-
voltreter between
108. 0MHz
-
8.07
(a)
(2)
TP1OCVT) and TPI3(GRDY
:
i
(a)
98. Oxllz
Connect 3 DC
AUTO
Le
DISCRIMINATOR }—Lkllz. #75kiz dev
volineter
between
or KONO
(X65-)
Ov
(b)
80dBu(ANT input)
TPM and TP12,
98, OUllz
@
98. Oitz
Connect a frequency}
AUTO
¥R2
¥co
0 dev
counter between
98iliz
(X05-)
19. 0OkHz
(ec)
300dBuC(ANT input) | TPS and GND.
i
>)
|
ive
98. ON
5
DISTORTION. } Jkllz,468,25kH2 dev
:
WT
(STEREO) | Selector:t or &
{d)
98. OMHz
«¥02-)
Minimum distortion:
Pilot:46. 75kKz dev
GOuBu(ANT inpul)
©
SEPARATION
98. OMliz
AUTO
(E,T type
Stereo signal
98. OM
5+
Wininum crosstalk,
onty)
60dBuCAKT
input)
(a)
TUNUEG LEVEL
98. OMliz
Adjust ¥RI
0
dev
3-'
and.
Stop
at
the
point
H4dBuCANT
input) 75%
5
where FLICTUNED)
goes on.
AM-MW
SECTION
Keep the AM Joop antenna
instatied.
SELECTOR:
AM or ¥¥
fey
Connect 3 DC
(1) | BAND EDGE
=
voltmeler between
530kHz
-
1,3¥
(a)
a)
TPLOCVT) and TPI3GGNO}
(S31 KHz)
Connect a DC
(2))
BAND EDGE
-
voltmeter
between
163 0kHz
oe
70V
(a)
@
TPIOCVT) and TPI3CGHDY
(1602kH2)
)
(3)
geckiz
L2
Maximum
amplitude
and
RF ALIGNMENT | 400112,309% sod
{d)
990kBz
BLACK
{| symmetry of the oscilloscope
24aBuCART input)
.
(405-) | display.
AM-1.W
SECTION CET tyne only) Keep the AM loop antenna installed.
SRLECTOR: L¥
Connect @ DC
(4)]
BAND EDGE
-
voltecter betseon
153kHz
-
2.3V
(a)
@
TP1OCYT) and 'TP13CGRD})
|
Connect a DC
(5) 1 BAND EDGE
ed
voltmeter between
281 kz
-
7.0¥
(a)
@
TPIOCVT) and TPL3¢GHD:
|
Repeal
alignments
(4) and (5) several
Lines,
«)
21 6kliz
L3
Waximum amplitude and
(6)}
RF ALIGKNENT]
400112, 309% mod
td)
216kiz
BLACK
| symmetry of the oscilloseore
:
32dBuCANT input)
(x05-)_|
display.
Connection
7 Fa ae
sit
Limo
yh
ROR
paren,
27
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