Am If And Rf Alignment - Rotel Rt-426 Bedienungsanleitung
Inhaltsverzeichnis
PAR
T
NOSYMBOL COLOR M ODEL
e
L 205
L 205
AM IF and RF Alignment
PART II: LW Section (LW/MW/FM only)
Instruments:
AM Signal Generator and AC VTVM.
NOTES: Set function selector switch to LW position.
Input signal must be kept as low as possible to avoid AVC action.
Step
Connected
Pin No. 12 through
a 0.01 mfd
capacitor
Test loop radiate
signal into ferrite
2.
loop stick antenna
3.
4.
Repeat steps 2 and 3 until no further improvement
*NOTES:
After adjustment, check to make sure that, indeed, Both LW and MW alignments are in the best state.
Otherwise repeat LW and MW alignment procedure until no further improvement
only)
L 001
Step2—l.
AM
SC.
Step
L 206
YLW
RT-Q6
RED
R T-726
Fig. 3.
Abb.
3.
Fig. 3.
Generator
to
Frequency
455KHz
(400Hz
30% mod.)
160KHz
(400Hz
30% mod.)
330KHz
(400Hz
30% mod.)
(LW PORTION)
CHASSIS
TOP
CT6
osc
o
o
1
AM IF and RF Alignment Hook-Up (LW)
AM-ZF und I-IF-Abgleich (LW)
Alignement AM IF et HF (LW)
Procedure (Part II LW Section)
Tuning Dial
Setting
Non interfering
at low
end
of
scale
160KHz
on
dial
scale
330KHz
on
dial
scale
is noticed
VIEW
ANT
L202
L 203
LW
OSC
Adj ust
L204, L205,
L206.
L202(OSC),
LOOI (ANT)
against the
lead
line
side
CT6(OSC)
and
CT7(ANT)
(all on V.C.)
is noticed. (LW/MW/FM
Adjust
for
Maximum
reading on
AC VTVM
Inhaltsverzeichnis
