8 Cautions to be taken when handling Optical Pickup
The laser diode used inside optical pickup could be destroyed due to static electricity as a potential difference is caused by
electrostatic load discharged from clothes or human body. Handling the parts carefully to avoid electrostatic destruction during
repair.
8.1. Handling Optical Pickup
1. Do not impact on optical pickup as the unit structurally uses an extremely precise technology.
2. Short-circuit the flexible cable of optical pickup remove from the circuit board using a short-circuit pin or clip in order to prevent
laser diode from electrostatic destruction (Refer to Fig. 8.1 and Fig. 8.2)
3. Do not handle flexible cables forcibly as this may cause snapping. Handle the parts carefully (Refer to Fig. 8.1)
4. A new optical pickup is equipped with an anti-static flexible cable. After replacing and connecting to the flexible board, cut the
anti-static flexible cable. (Refer to Fig. 8.1)
Fig. 8.1
8.2. Replacing Precautions for Optical Pickup Unit
DVD/CD Optical Pickup
The optical pickup by which part supply was carried out attaches the short clip to the flexible board for laser diode electrostatic
discharge damage prevention. Please remove the short clip and be sure to check that the short land is open, before connecting.
(Please remove solder, when the short land short-circuits.)
8.3. Grounding for Preventing Electrostatic Destruction
1. Human body grounding
Use the anti-static wrist strap to discharge the static electricity accumulated in your body. (Refer to Fig. 8.2)
2. Work place grounding
Place a conductive material (conductive sheet) or iron board where optical pickup is placed. (Refer to Fig. 8.2)
Note :
Keep your clothes away from optical pickup as wrist strap does not release the static electricity charged in clothes.
Fig. 8.2
7
Summary of Contents for SC-TM900DVD
Page 9: ...10 Operation Procedures 9 ...
Page 10: ...10 ...
Page 11: ...11 Disc information 11 ...
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Page 35: ...Step 2 Remove DVD traverse deck by rotating to the arrow direction 35 ...
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Page 40: ...16 17 3 Replacement for the traverse deck Follow the Step 1 Step 10 of item 16 17 2 40 ...
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Page 65: ...18 3 1 Cassette Deck Section 18 3 2 Adjustment Point 18 3 Alignment Points 65 ...
Page 77: ...20 Voltage Measurement This section is not available at time of issue 77 ...
Page 107: ...35 6 6 7 7 7 7 7 7 6 U 2 2 2 0 2 1 2 2 1 2 2 1 2 1 2 2 2 4 6 35 ...
Page 109: ...0 7 7 7 2 2 2 3 4 6 EW ODEL GT IC OTE ATERIAL 3IZE MODIFIED 0 4 25 ...
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Page 139: ...26 1 Deck Mechanism RAA3413 S 26 1 1 Deck Mechanism Parts Location 139 ...
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Page 142: ...26 2 DVD Loading Mechanism 26 2 1 DVD Loading Mechanism Parts Location 142 ...
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Page 145: ...26 3 Cabinet 26 3 1 Cabinet Parts Location 145 ...
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Page 188: ...3 Connection of the Wiring Diagram 4 Cabinet Parts Location 5 service m speaker 11 ...
Page 192: ...3 Connection of the Wiring Diagram 9 service m speaker ...
Page 193: ...4 Cabinet Parts Location 3 10 service m speaker ...
Page 198: ...3 Connection of the Wiring Diagram 4 Cabinet Parts Location 15 service m speaker ...
Page 203: ...3 Connection of the Wiring Diagram 4 Cabinet Parts Location 20 service m speaker ...