3
SCD-C555ES
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output three times.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on the
rear exterior.
SECTION 1
SERVICING NOTES (1)
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repain parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
The emission check enables continuous checking of the S curve.
When the bottom plate is removed, the RF board can be checked.
eleven screws
(BVTP3
×
8)
RF board
bottom plate
Summary of Contents for SCD-C555ES - Super Audio Cd
Page 18: ...18 18 SCD C555ES 4 2 SCHEMATIC DIAGRAM RF SECTION Refer to page 40 for Waveforms IC B D 390p ...
Page 28: ...28 28 SCD C555ES 4 12 SCHEMATIC DIAGRAM AUDIO SECTION 2 2 Page 31 Page 31 IC B D ...
Page 29: ...29 29 SCD C555ES 4 13 SCHEMATIC DIAGRAM D POWER SECTION ...
Page 34: ...34 34 SCD C555ES 4 19 SCHEMATIC DIAGRAM HP SECTION TO AUDIO BOARD 1 2 Page 27 ...
Page 38: ...38 38 SCD C555ES 4 23 SCHEMATIC DIAGRAM POWER SECTION 27 ...
