14 Measurement And Adjustments
14.1. Cassette Deck Section
14.1.1. Requirements
·
Test tape (QZZCFM) (QZZCWAT)
·
Normal blank cassette tape (QZZCRA)
·
Digital frequency counter
·
Oscilloscope
·
Electrical voltmeter
·
Headphone jack output jig (Fig 8)
14.1.2. Setting of Unit
·
VOLUME: MAX
14.1.3. Preparations
1. Apply under [10. Assembling and Disassembling].
2. Remove 4 screws from the mechanism unit to disassemble. under [10.13 Disassembly of Deck Mechanism Unit].
3. Connect the headphone jack output jig (Fig 8) to headphone jack.
Fig. 8
Fig. 9
14.1.4. Tape Speed Adjustment
·
Normal speed adjustment (only during forward playback)
(Product reference value: 3,000±90Hz)
1. Connect a frequency indicator. (Fig 10)
2. Playback the middle portion of the test tape (QZZCWAT).
3. Adjust the motor screw so that the following output level is produced. (Fig 11)
Adjustment Range: 3,000 ± 90Hz (a constant speed)
47
SA-AK250PL
Summary of Contents for SA-AK250
Page 8: ...8 SA AK250PL ...
Page 12: ...7 Operating Procedures 7 1 Main Unit Key Buttons Operations 12 SA AK250PL ...
Page 13: ...7 2 Remote Control Key Buttons Operations 13 SA AK250PL ...
Page 15: ...With reference to page 15 of the operating instruction manual 15 SA AK250PL ...
Page 17: ...17 SA AK250PL ...
Page 20: ...20 SA AK250PL ...
Page 22: ...9 4 2 Error Code Table For CD Changer Block 22 SA AK250PL ...
Page 23: ...23 SA AK250PL ...
Page 24: ...24 SA AK250PL ...
Page 28: ...10 3 Main Parts Location 28 SA AK250PL ...
Page 37: ...10 16 1 Replacement of Pinch Roller and Head Block 37 SA AK250PL ...
Page 38: ...10 16 2 Replacement of Motor Capstan Belt A Capstan Belt B and Winding Belt 38 SA AK250PL ...
Page 44: ...12 4 Checking and Repairing of Power P C B 44 SA AK250PL ...
Page 46: ...46 SA AK250PL ...
Page 50: ...15 3 Main P C B 50 SA AK250PL ...
Page 51: ...15 4 Panel P C B Transformer P C B 15 5 Power P C B 51 SA AK250PL ...
Page 52: ...15 6 Waveform Chart 52 SA AK250PL ...
Page 54: ...54 SA AK250PL ...
Page 62: ...SA AK250PL 62 ...
Page 64: ...64 SA AK250PL ...
Page 76: ...SA AK250PL 76 ...
Page 84: ...SA AK250PL 84 ...
Page 89: ...23 Exploded Views 23 1 Cabinet Parts Location SA AK250PL 89 ...
Page 90: ...SA AK250PL 90 ...
Page 91: ...23 2 Deck Mechanism Parts Location RAA4403 S SA AK250PL 91 ...
Page 92: ...23 3 Packaging SA AK250PL 92 ...