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LG CM9730 Service Manual

LG CM9730
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NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton
swab should be used, taking care not to distort lens.
6) Never attempt to disassemble the pick-up.
Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
Storage in conductive bag
Drop impact
NEVER look directly at the laser beam, and don’t allow
contact with fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure
1-3
SERVICING PRECAUTIONS

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LG CM9730 Specifications

General IconGeneral
Type-
Cassette deckNo
Product colorBlack
Disc loading typeTray
Optical disc playerYes
Impedance75 Ω
RMS rated power2300 W
Number of speakers2
Power sourceAC
Input voltage220-230 V
Input frequency50 - 60 Hz
Power consumption (standby)1 W
Power consumption (typical)180 W
Playback disc formatsCD audio
Audio formats supportedMP3, WMA
FM band range87.5 - 108 MHz
Supported radio bandsAM, FM, MW
Preset stations quantity50
Display typeLCD
Speaker depth500 mm
Speaker width520 mm
Speaker height720 mm
Apple docking compatibilityNot supported
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Weight and Dimensions IconWeight and Dimensions
Main unit dimensions (WxDxH)542 x 421 x 310 mm

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