3 Precaution of laser diode
CAUTION:
This unit utilizes a class 1 laser diode in the optical pickup unit .
Invisible laser radiation is emitted from the optical pickup lens.
Wavelength: 780nm
When the unit is turned on:
1. Do not look directly into the optical pickup lens.
2. Do not use optical instruments to look at the optical pickup lens.
3. Do not adjust the preset variable resistor on the optical pickup lens.
4. Do not disassemble the optical optical pickup unit.
5. If the optical pickup is replaced, use the manufacturer’s specified replacement pickup only.
6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous radiation
exposure.
CAUTION!
THIS PRODUCT UTILIZES A LASER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT
IN HAZARDOUS RADIATION EXPOSURE.
n
Use of caution label (Except for U.S.A.)
4 Handling Precautions For Traverse Unit
The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by the static electricity of
clothes or our human body.
So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
·
Way of handling the traverse deck (optical pickup)
1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock.
2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board). (Fig. 1)
3. Take care not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish
the job in as short time as possible.
4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted.
Grounding for electrostatic breakdown prevention
1. Human body grounding. (Fig. 2)
Use the anti-static wrist strap to discharge the static electricity from your body.
2. Work table grounding. (Fig. 2)
Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is place, and ground the
sheet.
7
SC-EN33PC
Summary of Contents for SC-EN33PC
Page 10: ...6 Accessories Remote Control AC Cord FM AM Antenna 10 SC EN33PC ...
Page 12: ...7 3 Connection 12 SC EN33PC ...
Page 30: ...11 1 Check and Repair of CD Servo P C B 30 SC EN33PC ...
Page 33: ...12 2 CD Servo P C B 12 3 Motor P C B 12 4 Panel P C B 12 5 Tuner P C B 33 SC EN33PC ...
Page 34: ...12 6 Waveform Chart 34 SC EN33PC ...
Page 35: ...13 Wiring Connection Diagram 35 SC EN33PC ...
Page 36: ...36 SC EN33PC ...
Page 37: ...14 Block Diagram 14 1 CD Servo SC EN33PC 37 ...
Page 38: ...14 2 Tuner SC EN33PC 38 ...
Page 39: ...14 3 Main 1 2 Transformer Sensor SC EN33PC 39 ...
Page 40: ...14 4 Main 2 2 Panel LED Power Switch Tact Switch Switch Motor SC EN33PC 40 ...
Page 42: ...42 SC EN33PC ...
Page 44: ...16 1 A CD Servo Circuit SC EN33PC 44 ...
Page 45: ...16 2 B Tuner Circuit SC EN33PC 45 ...
Page 46: ...16 3 C Main Circuit SC EN33PC 46 ...
Page 47: ...SC EN33PC 47 ...
Page 48: ...SC EN33PC 48 ...
Page 50: ...16 5 I Motor Circuit J Sensor Circuit K Transformer Circuit SC EN33PC 50 ...
Page 52: ...17 1 A CD Servo P C B B Tuner P C B SC EN33PC 52 ...
Page 53: ...17 2 C Main P C B SC EN33PC 53 ...
Page 57: ...20 Exploded Views 20 1 Cabinet Parts Location SC EN33PC 57 ...
Page 58: ...SC EN33PC 58 ...
Page 59: ...20 2 Packaging SC EN33PC 59 ...
Page 60: ...SC EN33PC 60 ...
