— 5 —
SECTION 1
SERVICING NOTE
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH
TURNS OFF
Insert a screwdriver into the aperture of the unit bottom, and
move it in the direction of arrow.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
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.
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 two times.
Содержание CDP-XB920
Страница 7: ... 7 This section is extracted from operating instructions ...
Страница 15: ...CDP XB920 XB920E 17 18 6 3 SCHEMATIC DIAGRAM MAIN SECTION 1 2 See page 37 for IC Block Diagram ...
Страница 16: ...CDP XB920 XB920E 19 20 6 4 SCHEMATIC DIAGRAM MAIN SECTION 2 2 See page 37 for IC Block Diagram 18 ...
Страница 18: ...CDP XB920 XB920E 23 24 6 6 SCHEMATIC DIAGRAM DISPLAY SECTION See page 41 for IC Pin Function Description ...
Страница 20: ...CDP XB920 XB920E 27 28 6 8 SCHEMATIC DIAGRAM POWER SECTION ...