Measurements And Adjustments; Cassette Deck Section; Bias And Erase Voltage Check - Panasonic SA-AK22 Service Manual
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During the above display, executing CD PLAY will display auto adjustment result for CD PLAY mode.
12. Measurements and Adjustments
12.1. Cassette Deck Section
- Measurement Condition
- Tape edit: NORMAL
- Record timer: OFF
- Make sure head, capstan and press roller are clean.
- Judgeable room temperature 20 ± 5 °C (68 ± 9°F)
- Measuring instrument
- EVM (Electronic Volmeter)
- Digital quency counter
- Test Tape
- Tape speed gain adjustment (3 kHz, -10 dB); QZZCWAT
12.1.1. Tape Speed Adjustment (Deck 1/2)
1. Set the tape edit button to "NORMAL" position.
2. Insert the test tape (QZZCWAT) to DECK 2 and playback (FWD side)
the middle portion of it.
3. Adjust Motor VR (DECK 2) for the output value shown below.
Adjustment target: 2940 ~ 3060 Hz
(NORMAL speed)
4. 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.
12.1.2. Bias and Erase Voltage Check
34
Digitized in Heiloo, Holland
12/10/2014
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