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RX-C45LS
RX-C45LS
FM-RF ALIGNMENT
SWNT
©
:
;
[ets }}-__-.@
:
MW ANT:
CURRENT
Variable
Output meter
L7 (FM OSC
(*2) Adjust for maxi-
eS,
SSOkH2
(NORMAL)
|
87.5 MHz
capacitor
across
Coil)
mum output.
PLAYBACK
fully closed.
voice coil.
Connect to test point
Variable
© © aveack
CURR
V through FM dummy | 108 MHz
capacitor
CT3 (FM OSC
Ase
@i_
LEveviten
@—{vr301 |
antenna.
Negative
fully open.
Trimmer)
ar
side to test point Y .
(45kH2
(al
EG
Tune to signal.
L5 (FM ANT
swosc
@(O]
zi
18.8 MHz
®
OVERALL
Coil)
fe)
GAIN (Rch)
OVERALL
[vR203|
F
8
(#2) Adjust for maxi-
Lio
.
106 MHz
"
CT2 (FM ANT
mum output.
SW o8¢
®
GAIN (Lch)
Trimmer)
Repeat steps
;
FM OSC
BIAS
BIAS
(3)~(6).
MWOSC
FM OSC
:
CURRENT
CURRENT
AM
IFT
1650kHz
108MHz
(METAL )(R ch)
(METAL) (Lech)
were
©
vco
FM
2nd
I9kHz
i
10.7 MHz
@®
@
BIAS OSC
r maximum
FM SIGNAL
EQUIPMENT
Fig. 18
GENERATOR
CONNECTION
ADJUSTMENT
SPECIFICATION
REMARKS
:
:
SOURCE
ELECTRONIC
A
CONNECTION
COUNTER
:
Adjustment of | 98 MHz, 60 dB (CW)
ieee
Adjust VR1, for 19 KHz
pilot signal.
Connect to test point
Pes
VR1
(£100 Hz) reading on
VW through FM dummy
electronics counter.
antenna.
"(iasnlini
Negative side to test
djustL2 by
point YW.
ol
in
Fis Core:
@ AUDIO ADJUSTMENT
rmaximum
ITEM
INPUT
MEASUREMENT | SPECIFICATION
ADJUSTMENT
REMARKS
POINT
POINT
:
.
teps
a
©
Fig. 19
Fig. 20
Azimuth
(10 kHz,
EXT SP
output.
Azimuth screw
Playback mode
eee)
MECHANISM PARTS LOCATION
level
(315 Hz, 0 dB)
sek
420 mV
VR201 (Rch)
rmaximum
rite core.
rmaximum
M115
M108
?.
r maximum
djust L3 by
Bias
i
Record mode
pov
oil bobbin
oscillation
bed
66.2+0.5 kHz
L301
Beat proof switch—|
;
frequency
Tape switch— Metal
teps
Erase
Use metal
ned
Record mode
current
tape
a
140 +0 mv
VR301
Beat proof switch—>|
Tape switch— Metal
Metal
Bias
Use metal
ty
Metal 4.0+9-2MV | yR102 (Lch)
Record mode
current
tape
wars
0.4
VR202 (Rch)
Beat proof switch—|
Gas
Normal
Normal VR304
Tape switch— Metal
2.0+0.2 mV
r maximum
. Apply a —57 dB (1.4 mV) 1 kHz
tho
e.
M39 g
y
signal from the DIN input
By
eee
h e
M36
M40
terminal.
iL
4
M213
M232
. Measure the output voltage of
cael
2)
Sea
®
pins © and @ of ICS.
|| M212 M26 M213 M31
nN
. Then, with the unit in the record
(¢
;
ee
pl ve
DIN Jack
mode, record a signal.
;
ak
is
Mas
ee
Output
VR103 (Lch)
. Playback the recorded part,
M30-S OS
Overall gain
~57 dB
Pin®... (+) Loh | Output... +0MV | yR903 (Rch)
and measure the output voltage
e
Pin®...
(+) Reh
of pins © and @ of IC5.
+34
Pin®...(-)
. Compare the output voltage
;
——M120
measured in items 2 and 4, and
adjust so there is no difference
in the level.
(Adjust to obtain 0+1 dB.)
*Output voltage reference value of
IC5 pins @ and @ .. . 380 mV.
35
M231
"maximum
: is
@ LED METER ALIGNMENTS
ig.
1 9 ) .
ITEM
ADJUSTMENT
Level check
VR303
REMARKS
"maximum
fig. 20).
1. Play back the test tape (QZZCLA).
2. Adjust VR303 so that the 4th LED from the left begins to iltuminate.
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