Panasonic RX-5012LS Serviceanleitung Seite 9
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Fig. 7
Shown in fig.—
To remove—.
Ref No.
Procedure
4
4
Front Cabinet
2
3
4
5
5
5
Mechanism
5
6
6
7
Circuit Board
6
8
7
9
7
10
Worm gear
II
9—12
8
7
12
Turn the dial durm to fully counter-clockwise.
*2. Tum the tuning shaft to fully counter-clockwise.
MEASUREMENTS
ALIGNMENT
INSTRUCTION
READ CAREFULLY
BEFORE ATTEMPTING
Set volume control to maximum.
I.
Set tone control to treble.
2.
Set band switch to LW, MW, SW or FM.
3.
4.
Set balance
control
to center.
Set function switch to radio.
5.
LW, MW, SW and FM ALIGNMENT
SIGNAL
GENERATOR
or
SWEEP
GENERATOR
RADIO
DIAL
BAND
SETTING
FREQUENCY
CONNECTIONS
AM-IF
Fashion loop of
Point of non-
several
turns of
455 kHz
MW
wire and radiate
30% Mod.
interference. (on/
signal into loop of
at 400 Hz
about 600 kHz)
receiver.
LW-RF
LW
136 kHz
Tunin
capacitor
fully cPosed
(2)
297 kHz
Tuning capacitor
LW
fully open.
145 kHz
Tune to signal.
(4)
LW
(5)
LW
285 kHz
Fig. 8
Remove—.
Screw(3x45)
.....
....
Push the Eject Button
Socket
Screw (3x 14) .
Socket
Knob
Screw(3x14)
.
Cut the Rib by nippers
Stopper
Open the Rib (L) by pliers in the direction
of the arrow@, and remove the Worm gear
in the direction of the arrow@
Settle the Stopper with weld beads (K)
after the exchange of the Worm gear.
AND ADJUSTMENTS
ALIGNMENT
6. Set FM mode switch to stereo.
7. Set power source voltage to 9 V DC.
8. Output of signal generator should be no higher than
necessary to obtain an output reading.
INDICATOR
(ELECTRONICS
ADJUSTMENT
REMARKS
VOLTMETER
or SCOPE
ALIGNMENT
Adjust for maximum
Output meter
across voice coil.
T2 (AM IFT)
output.
ALIGNMENT
LB (LW OSC
coil)
CT6 (LW OSC
Trimmer)
Adjust for maximum
output. Adjust L5 by
ANT coil)
moving coil bobbin
along ferrite core.
Adjust for maximum
CT3 (LW ANT
output.
Repeat steps
Trimmer)
SIGNAL
GENERATOR
or
SWEEP
GENERATOR
RADIO
SETTING
CONNECTIONS
FREQUENCY
MW-RF
Tuning capacitor
511 kHz
fully closed.
1 ,650 kHz
Tuning capacitor
Fashion loop of
fully open.
several
tums of
wire and radiate
Tune to signal.
signal into loop of
550 kHz
receiver.
(9)
1 ,500 kHz
*I Cement antenna bobbin with wax after completing alignment.
SW-RF ALIGNMENT
Tuning capacitor
(10)
sw
5.75
MHz
fully closed.
(11)
Connect to test point
Tuning capacitor
18.8 MHz
sw
through ceramic
fully open.
capacitor (10 pF)
Negative side
to test point V
(12)
5.9 MHz
Tune to signal.
sw
FM-IF
High side thru.
Point of non-
(13)
FM
test
10.7 MHz
interference.
point V, Negative
(SWP.)
side to test point V
about 90 MHz)
(14)
FM-RF
Variable
capacitor
(15)
FM
87.5
MHz
fully closed.
Connect to test point
Variable
(16)
108 MHz
capacitor
FM
through FM dummy
fully open.
antenna. Negative
side to test point V
(17)
FM
90 MHz
Tune to signal.
(18)
106 MHz
(*2) Three output responses will be present;propertuning is the centerfrequency.
u SEPARATION
ALIGNMENT
FM SIGNAL
EQUIPMENT
ITEM
GENERATOR
CONNECTION
SOURCE
ELECTRONIC
CONNECTION
COUNTER
98 MHz, 60 dB
(CW) Connect to
test point V
Adjustment of
through FM
pilot signal.
dummy antenna.
Negative side to
test point V
AUDIO
ADJUSTMENT
ITEM
INPUT
MEASUREMENT
polNT
QZZCFM
EXT SP
Azimuth
(6.3 kHz,
-20 dB)
INDICATOR
(ELECTRONICS
DIAL
REMARKS
ADJUSTMENT
VOLTMETER
or SCOPE
ALIGNMENT
Output meter
L9 (MW OSC
Adjust for maximum
across
voice
coil.
coil)
output.
CT5 (MW OSC
Trimmer)
Adjust for maximum
output.AdjustL6 by
Ld (MW ANT
coil)
moving COII bobbin
along territe core.
Adjust for maximum
CT4 (MW ANT
output.
Trimmer)
Repeat steps
Ll O (SW OSC
Adjust for maximum
coil)
output.
CT7 (SW OSC
Trimmer)
Adjust for maximum
L7 (SW ANT
output.
coil)
Repeat steps
ALIGNMENT
Connect
vert.
Adjust for maximum
amp. of scope to
Tl (FM 1st IFT)
amplitude.
(on/
test point V
(Refer to fig. 10).
Negative side to
test point V
Adjust for maximum
T3 (FM 2nd FT)
amplitude.
(Refer to fig. II).
ALIGNMENT
Output meter
L4 (FM OSC
(*2) Adjust for maxi-
coil)
mum output.
across
voice coil.
CT2 (FM OSC
Trimmer)
L3 (FM ANT
coil)
($2) Adjust for maxi-
CTI (FM ANT
mum output.
Trimmer)
Repeat steps
ADJUSTMENT
SPECIFICATION
REMARKS
Adjust VRI , for 19 kHz
VRI
150 Hz) reading on
19 kHz
electronics
counter.
SPECIFICATION
ADJUSTMENT
REMARKS
POINT
Maximum
Azimuth
screw
Playback mode
output.
