Cautions On Handling Ts Mech Unit - Canon DC10 E Service Manual

2-4 Cautions on Handling TS Mech Unit

<Hints>
The TS mech unit is of a precision design. When handling it, exercise extreme care, with the full understanding of the following points.
<Check Points>
(1) Cautions on handling
• The Disc Cover cannot be opened unless the power for the main unit is turned on. Avoid trying to open the cover forcibly. First
turn on the power and then open the Disc Cover.
• It may require a longer time to take out the TS Mech depending on the disc condition and its recorded contents.
(2) Caution for antistatic protection
Since the TS mech unit contains a control circuit board, wear a static dissipative wrist band (commercially available) for antistatic
protection.
(3) Cautions about laser beam
• The laser beam is emitted in the TS Mech.
If the laser beam gets in your eyes, it could cause eye damage, so never disassemble the TS Mech.
• This product's laser beam condenses light using an objective lens in the light pick up, so that it strikes a focal point on the disk's
recording surface. Therefore, make sure that your eyes are at least 30 cm away from the objective lens when the laser diode is
emitting light.
Note : In complete products, the laser beam is not normally emitted when the Disc Cover is open. The laser beam is
emitted when the two open/closed detection sensors near the Disc Cover are set to closed or when the Disc
Cover on a disassembled product is closed and the operation of the TS Mech is being checked.
(4) How to take up the service parts
Since the white flexible cable bulges out of the control P.C.B., holding the left side of the TS Mech by hand means holding the
flexible cable by hand. In this way, the flexible cable may be excessively loaded to result in its wire breakage. Thus, when taking out
the TS Mech from the container, never hold its left side, but hold its right side, as shown in the figures below. (Fig. 8)
Caution: If the flexible cable is broken, it is required to replace the entire TS Mech unit, because there is no replace-
ment part for the flexible cable alone.
Right way to take out the TS Mech
(First lift up its right side, and then take up the TS
Mech by holding its upper and lower sections.)
Wrong way to take out the TS Mech
Fig. 8
12
DC10 E, DC20 E
SERVICE HINTS