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LG GoldStar FMH-49A Service Manual page 3

Compact disc stereo system

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SERVICE INSTRUCTIONS
PRECAUTION TO REPLACE OPTICAL BLOCK
PICK-UP Assy P.C.B
CD PICK-UP Assy
AEELSEOTEETIIEDEETEBEEEEEEEEEE IEG,
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3
7
A
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3
vA
vA
vA
AYA
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A
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PATA
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Gerssereetl Yes,
Body or clothes electrostatic potential could
ruin laser diode in the optical block. Be sure
ground body and workbench, and use care
the clothes do not touch the diode.
AAAAR
ARRAN
1) After the connection,
remove
solder
shown in right figure.
S N 6
ww
vA
Z
4
vA
Z
Z Z
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4
4
3 Zz
>
| Ground
CAUTION FOR HANDLING THE OPTICAL PICK-UP
1. Grounding for Human Body.
Be sure to put on a wrist-strap for grounding (with impedance
lower than
10°2) whose
other end iS
grounded. The strap works to drain away the static electricity build-up on the human body.
2. Grounding For the Work Table.
Be sure to lay on the table a conductive sheet (with impedance lower than 10°.2) such as a sheet of copper,
which is grounded.
up.

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Goldstar fmh-49lGoldstar fhh-49aGoldstar fhh-49l