LG CM8460 User Manual

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3-3

ONE POINT REPAIR GUIDE

2. NO AMP POWER

If the unit doesn’t work by no ±PVDD problem, repair the set according to the following guide.

2-1. FUSE/ FET

2-1-1. Solution

Please check and replace F911, Q905, Q906 on SMPS board.

2-1-2. How to troubleshoot (Countermeasure)

1) Check if the fuse F911 is open or short-circuit.

2) Check the Drain-Source or Drain-Gate, Gate-Source Resistance of Q905, Q906 with a digital multimeter.

 If it is short condition, it’s destroyed. Replace it with a new one.

(Please replace 2 FET at the same time although several FET is OK).

2-1-3. Service hint (Any picture/ Remark)

< F911 >

If F911 is not short-circuit,

replace it with a same speciﬁ cations one.

< Q905, Q906 >

If Q905, Q906 is short-circuit,

replace it with a new one.

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General

Type	Home audio mini system
Cassette deck	-
Product color	Black
Optical disc player	Yes
Number of optical discs	1 discs
RMS rated power	2750 W
Number of speakers	2
Number of subwoofers	1
Subwoofer driver diameter (imperial)	10 \
Power source	AC
Power consumption (standby)	0.5 W
Power consumption (typical)	250 W
Supported radio bands	FM
Audio formats supported	MP3, WMA
Headphone connectivity	3.5 mm
USB 2.0 ports quantity	USB 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.
Apple docking compatibility	Not supported

Weight and Dimensions