Cassette Deck Section Adjustments; Tape Speed Alignment; Alignment Instruction; Alignment Points - Panasonic RX-DT30 Service Manual

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CASSETTE DECK SECTION

ALIGNMENT INSTRUCTION

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Note : No Azimuth Head Alignment is required due to Aztec Head is used in the cassette mechanism.
TAPE SPEED ALIGNMENT (DECK 1,2)
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I
(Standard Value
Normalspeed
(StandardValue
(Standard Value
High speed
1. Test equipment connection is shown in figure.
2. Set the unit to "TAPE" position.
3. Playback the middle part of the test tape (QZZCWAT) in deck 2.
4. Adjust VR601 for the output value shown in Fig. 5.
5. Playback the middle part of the test tape (QZZCWAT) in deck 1.
6. Repeat step 4.
5. Set the unit to "HIGH" speed position.
6. Place the cassette deck into the REC mode (DECK 1)
and the PLAY mode (DECK 2).
7. Repeat step 4.
:
Note
The normal speed adjustment must be done before the
high speed adjustment.
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ALIGNMENT POINTS

< TUNER SECTION >
FM OSC FM ANT
109.2MHz 106MHz
/CT1-41 ~1~~
FM 1st
10.7MHz
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FM 2nd
10.7MHz
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Fig. 1
FM OSC
66.2Ml-l~
< CASSETTE DECK SECTION >
DECK P.C.B.

TAPE SPEED ALIGNMENT

q
,
1
Fig. 5
READ CAREFULLY BEFORE Al-TEMPTING ALIGNMENT
:
3000 * 50 Hz . . . Deck 2)
:
Deck 2 * 50 Hz . . . Deck 1)
:
5100 Hz -)
AM ANT AM OSC
1753kHz
1500kHz
Ipiq
AM IFT
455kHz
r=i
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UNIT
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Speaker terminal
LCH"
R CHc
:
Adjusment Target 3000 * 50 Hz
:
Adjusment Target Deck 2 * 50 Hz
:
Adjusment Target 5100 Hz -
AM ANT
6OOkHz
-1L31
AM 0%
BllkHz
-aa
J
-3l-
1 RX-DT30
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C
Digital frequency
counter
. Normal speed (Deck 2)
Normal speed (Deck 1)
. . . High speed
Headphone
To
rT Z
Zeasuring
,-ir--e I) Instrument
L-2$,
R=16-32n
Fig. 2
Fig. 3
10.7 MHz',
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1,
-__,
Fig. 4