Sylvania HT6051F Service Manual page 13

Reference Notes
1. CAUTION 1: Electrostatic breakdown of the laser
diode in the optical system block may occur as a
potential difference caused by electrostatic charge
accumulated on cloth, human body etc., during
unpacking or repair work.
To avoid damage of pickup follow next procedures.
1) Short the three short lands of FPC cable with
solder before removing the FFC cable (CN201)
from it. If you disconnect the FFC cable
(CN201), the laser diode of pickup will be
destroyed. (Fig. D3)
2) Disconnect Connectors (CN301), (CN401),
(CN601) and (CN801). Remove two Screws
(S-5A) and (S-5B) and lift the DVD Main CBA
Unit. (Fig. D3)
2. Reassembly Notes of New DVD Mechanism:
1).To remove the Chassis Cover, remove four
screws A as shown in Fig. D3.
2).To avoid damage of the pickup unit (laser
diode), confirm that the three short lands (either
of two places) are shorted out by soldering
between them as shown in View A in Fig. D3.
3).Connect the FFC cables of the new DVD
Mechanism to the three connectors (CN201,
CN301, CN801) on the DVD Main CBA.
4).After confirming that the FFC cables are
securely connected to the three connectors,
remove the solder from the three short lands. If
the solder is not removed, the laser diode will
not light and it will not be possible to read discs.
5).Insert the pin A on the Chassis Cover into the
hole A on the Main Chassis as shown in Fig.
D3. Then tighten four screws A to install the
Chassis Cover.
3. CAUTION 2: When reassembling, confirm the
FFC cable (CN201) is connected completely. Then
remove the solder from the three short lands of
FPC cable. (Fig. D3)
4. How to eject a disc in emergency
Press and hold [EJECT] on the unit for more than
5 seconds.
[1] Top Cover
(S-2)
[2] Bottom Cover
[4] Reinforce
Plate
(S-4)
[5] Front
Bracket
(L-1)
(L-1)
1-5-2
(S-1)
(S-2)
Fig. D1
(S-3)
(S-4)
(L-1)
[3] Front
Assembly
Fig. D2
E61TADC