– 15 –
2. Mecha. Deck Block Primary Check
The following parts of the mecha. deck block can be checked in a
simple check.
• Laser diode
• Focus coil
• Spindle motor
• Disc type check switch
• Sled motor
• Tracking coil
• INITIAL SW
• HEAD UP/DOWN motor
• INITIAL SW
Note:
To check the operation of mecha. deck block, remove the
Upper Panel Assembly. (See 2. Removal on page 2-9)
Checking method
1) In the normal mode, set the POWER switch to “CAMERA”.
2) Check that “DISC LID IS OPEN” is displayed on the LCD
screen.
3) Press the part
A
to check that the part
B
lights in red and
moves up and down. (Laser diode check, Focus coil check)
Also, check that the spindle motor rotates at this time. (Spindle
motor check)
Note:
If the part
A
is released once and then pressed again, the
operation restarts though the operation time is short.
MD1/MD2
PIT/GRV
PROTECT SW
Spindle Motor
OPTICAL PICK-UP block
B
C
A
D
X
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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
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 emis-
sion, observe from more than 30 cm away from the objective lens.
Fig.7-1-22
Summary of Contents for MDDISCAM DCM-M1
Page 5: ...1 1 SECTION 1 GENERAL This section is extracted from in struction manual 3 866 152 11 DCM M1 ...
Page 6: ...1 2 ...
Page 7: ...1 3 ...
Page 8: ...1 4 ...
Page 9: ...1 5 ...
Page 10: ...1 6 ...
Page 11: ...1 7 ...
Page 12: ...1 8 ...
Page 13: ...1 9 ...
Page 14: ...1 10 ...
Page 15: ...1 11 ...
Page 16: ...1 12 ...
Page 17: ...1 13 ...
Page 18: ...1 14 ...
Page 19: ...1 15 ...
Page 20: ...1 16 ...
Page 21: ...1 17 ...
Page 22: ...1 18 ...
Page 23: ...1 19 ...
Page 24: ...1 20 ...
Page 25: ...1 21 ...
Page 26: ...1 22 ...
Page 27: ...1 23 ...
Page 28: ...1 24 ...
Page 29: ...1 25 ...
Page 30: ...1 26 ...
Page 31: ...1 27 ...
Page 32: ...1 28 ...
Page 33: ...1 29 ...
Page 34: ...1 30 1 30 E ...
Page 47: ...2 13 MEMO ...
Page 69: ...DCM M1 4 5 4 6 4 7 4 8 4 1 FRAME SCHEMATIC DIAGRAM FRAME ...
Page 96: ...DCM M1 4 115 4 113 4 114 ETHER INTERFACE ETHER ...
