13.1. Cassette Deck Section
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Measurement Condition
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Reverse-mode selector switch:
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Deck Tape Select: NORMAL
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Make sure head, capstan and press roller are clean.
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Judgeable room temperature 20 ± 5 °C (68 ± 9°F)
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Measuring instrument
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EVM (DC Electronic voltmeter)
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Digital frequency counter
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Test Tape
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Tape speed gain adjustment (3 kHz, -10 dB);
QZZCWAT
13.1.1. Tape Speed Adjustment (Deck 1/2)
1. Insert the test tape (QZZCWAT) to DECK 2 and playback
(FWD side) the middle portion of it.
2. Adjust Motor VR (DECK 2) for the output value shown
below.
Adjustment target: 2910 ~ 3090 Hz (NORMAL speed)
3. After alignment, assure that the output frequency of the
DECK 1 FWD are within ±60 Hz of the value of the output
frequency of DECK 2 FWD.
Fig. 1
13.1.2. Bias Voltage Check
1. Set the unit “AUX” position.
2. Insert the Normal blank tape (QZZCRA) into DECK 2 and
the unit to “REC” mode (use “
l
REC/STOP” key).
3. Measure and make sure that the output is within the
standard value.
Bias voltage for Deck 2
14±4mV (Normal)
Fig. 2
Fig. 3
13 Measurements and Adjustments
13.1.3. Bias Frequency Adjustment (Deck 1/2)
1. Set the unit to “AUX” position.
2. Insert the Normal blank tape (QZZCRA) into DECK 2 and set the unit to “REC” mode (
l
use “REC/STOP” key).
3. Adjust L1002 so that the output frequency is within the standard value as below.
Standard Value: 89 ~ 110 kHz
Fig. 4
13.1.3.1. Cassette Deck Section
Below is the locations of test points for Deck P.C.B.:-
44
SA-AK240P / SA-AK240PC
Содержание SA-AK240P
Страница 13: ...7 Accessories Remote Control FM Antenna Wire AC Cord AM Loop Antenna 13 SA AK240P SA AK240PC ...
Страница 14: ...8 Operating Instructions Procedures 14 SA AK240P SA AK240PC ...
Страница 15: ...15 SA AK240P SA AK240PC ...
Страница 24: ...10 3 Main Parts Location 24 SA AK240P SA AK240PC ...
Страница 39: ...Step 2 Push the lever upward and open the cassette lid Remove the cassette tape 39 SA AK240P SA AK240PC ...
Страница 41: ...12 2 Checking and Repairing of Transformer P C B 41 SA AK240P SA AK240PC ...
Страница 42: ...12 3 Checking and Repairing of Panel Deck Deck Mechanism P C B 42 SA AK240P SA AK240PC ...
Страница 43: ...12 4 Checking and Repairing of Power P C B 43 SA AK240P SA AK240PC ...
Страница 48: ...48 SA AK240P SA AK240PC ...
Страница 49: ...14 2 Power P C B and Transformer P C B 49 SA AK240P SA AK240PC ...
Страница 50: ...14 3 Waveform Chart 50 SA AK240P SA AK240PC ...
Страница 51: ...51 SA AK240P SA AK240PC ...
Страница 58: ...58 SA AK240P SA AK240PC ...
Страница 60: ...SA AK240P SA AK240PC 60 ...
Страница 62: ...SA AK240P SA AK240PC 62 ...
Страница 68: ...SA AK240P SA AK240PC 68 ...
Страница 70: ...SA AK240P SA AK240PC 70 ...
Страница 74: ...SA AK240P SA AK240PC 74 ...
Страница 82: ...SA AK240P SA AK240PC 82 ...
Страница 87: ...21 Exploded Views 87 SA AK240P SA AK240PC ...
Страница 88: ...88 SA AK240P SA AK240PC ...
Страница 89: ...21 1 Cabinet Parts Location SA AK240P SA AK240PC 89 ...
Страница 90: ...SA AK240P SA AK240PC 90 ...
Страница 91: ...21 2 Deck Mechanism Parts Location RAA4502 S SA AK240P SA AK240PC 91 ...
Страница 92: ...SA AK240P SA AK240PC 92 ...
Страница 93: ...21 3 Packaging SA AK240P SA AK240PC 93 ...
Страница 94: ...SA AK240P SA AK240PC 94 ...