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Tape Deck Section; Tape Adjustments - Sanyo DC-X8CT Service Manual

Separate mini component system

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TAPE ADJUSTMENTS

1. Azimuth Adjustment
• Be sure to clean the heads before attempting to make any adjustment.
• Be sure both channels (1 and 2) are the same level.
(Using a dual-channel oscilloscope)
• Be sure both channel's waveform are same for the phase matching.
• After completion of the adjustment, use the threadlock (TB-1401B) to
secure the azimuth adjustment screws.
1. Remove the cover deck.
2. Load a test tape (MTT-114N etc. : 10kHz) in the Deck.
3. Press the PLAY (Normal playback) button.
4. Use a + tip screwdriver to turn the screw for normal azimuth
adjustment so that the left and right outputs are maximized at
the same phase during normal playback. See Fig.1.
5. Press the PLAY (Reverse playback) button.
6. Use a + tip screwdriver to turn the screw for reverse azimuth
adjustment so that the left and right outputs are maximized
at the same phase during reverse playback.
7. Adjust so that the waveforms for the left and right channels are in alignment.
2. Tape Speed Adjustment
• Connect the Frequency Counter to TAPE OUT.
1. Insert the test tape (MTT-111N, etc.; 3,000Hz) into the DECK.
2. Press the PLAY button. .
3. Adjust a hole on the motor bottom so that a frequency counter reading of 3,000 ±5Hz is obtained.See Fig.2.
4. Press the STOP button, and eject the test tape.
3. Torque Measurement
Item
Test Cassette
PLAY/REV.
F.FWD
REW

TAPE DECK SECTION

Take-up Torque
PLAY : TW2111A (FWD)
PLAY : TW2121A (REV)
F.FWD / REW : TW2231
30 ~ 70 grcm
70 ~ 150 grcm
70 ~ 150 grcm
- 49 -
MOTOR
Back tention
PLAY : TW2111A (FWD)
PLAY : TW2121A (REV)
1 ~ 6 grcm
-
-
FORWARD
REVERSE
Fig.1
Fig.2
hole for adjustment
Pulley tention
Driving power cassette :
TW-2412 (PLAY)
TW-2422(REV. PLAY)
>80grcm
>80grcm

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