LASER BEAM SAFETY PRECAUTION
? Pick-up that emits a laser beam is used in this CD player section.
CAUTION :
THIS PRODUCT CONTAINS A LOW
POWER LASER DEVICE,TO ENSURE
CONTINUED SAFETY DO NOT REMOVE
ANY COVERS OR ATTEMPT TO GAIN
ACCESS TO THE INSIDE OF THE
PRODUCT.REFER ALL SERVICING TO
QUALIFIED PERSONNEL.
LASER OUTPUT ..............0.6 mW Max. (CW)
WAVELENGTH ..................790 nm
CD PICK-UP MAINTENANCE
About pick-up (Optical lens) Cleaning
Clean a lens with swab of the cotton which moistened it with alcohol, cleaning paper or cleaning disc appointed.
Specified cleaning disc : LC-1 (Part code : 645 026 1961 ..... manufactured by SANYO.)
Show a clean procedure in the following in reference by swab of cotton.
1. Cotton swab is wrapped with Cleaning paper.
2. Add the isopropyl alcohol.
3. Gently move the tip of cotton swab just like a draw a whirlpool from inside to outside on the surface of lens.
TAPE ADJUSTMENTS
a. Replacing the head c. Adjusting motor speed
1. After replacement, demagnetize the heads by using1. Insert the test tape (MTT-111 or etc. 3,000 Hz).
a degausser.2. Press the PLAY button.
2. Be sure to clean the heads before attempting to make3. Use a flat-tip screwdriver to turn the SVR to adjust so
any adjustments.that the frequency counter becomes 3,000 Hz.
3. Be sure both channels (1 and 2) are the same level.4. Press the STOP button.
(Using a dual-channels oscilloscope).
4. All wiring should be returned to the original position d.Replacing the motor
after work is completed.
MOTOR SPEED
ADJUSTMENT
R / P HEAD
RED WHITE
1
3
YELLOWEARTH
2
4
4
b. Adjusting head azimuth
1. Load a test tape (VTT-738, etc. :10kHz) fore. Checking the mechanism torques
azimuth adjustment.
? Clean the head, capstan and pinch roller before making
2. Press the PLAY button.any measurement.
3. Use a cross-tip screwdriver to turn the screw for
normal azimuth adjustment so that the left and rightMeasurementTake-up torqueBack tensionTape tension
Cassette forPLAY : TW-2111APLAY : TW-2111ADrive-power cassette
outputs are maximized at the same phase during
measurement F.FWD/REW : TW-2231TW-2412
normal playback.
PLAY30 ~ 70gr.cm1.0 ~ 6.0gr.cm80 gr or more
4. Press the STOP button.F.FWD/REW55 gr or more--
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ACEC
SANYO
