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3-12

ONE POINT REPAIR GUIDE

NO OPERATION OF MD

When no sound output in the CD function, you can not listen to music reading data

from a CD disc if the servo motors in MD don’t work. This step is for checking the

SLED MOTOR among them.

5-2. SLED MOTOR

5-2-1. Solution

Please check and replace IC407, IC408 on MAIN board.

5-2-2. How to troubleshoot (Countermeasure)

1) Check the SLDO signal from Pin15 of IC407.

 If no signal, check 3.3 V(RF) and X402.

2) Check the SLED+ & SLED- from IC408 to CN405 for driving SPINDLE motor. It is about 2.9 Vp-p.

 If no signal, check +1.8 V and +5 V for IC408.

3) Check if the FFC cable is solidly connected between CN405 and MD.

4) Check the MD.

 If the sled motor is sort-circuit or has any trouble, it can not move the pick-up module.

Please check the function after changing another MD.

5-2-3. Service hint (Any picture / Remark)

pj[W_G

zsT

`GGju[W\

zsR

^GGju[W\

zsR

zsT

< Waveform of SLED- & SLED+

for driving SLED motor >

< Signal check point >

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General

Type	-
Cassette deck	No
Product color	Black
Disc loading type	Tray
Optical disc player	Yes
Impedance	75 Ω
RMS rated power	2300 W
Number of speakers	2
Power source	AC
Input voltage	220-230 V
Input frequency	50 - 60 Hz
Power consumption (standby)	1 W
Power consumption (typical)	180 W
Playback disc formats	CD audio
Audio formats supported	MP3, WMA
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM, MW
Preset stations quantity	50
Display type	LCD
Speaker depth	500 mm
Speaker width	520 mm
Speaker height	720 mm
Apple docking compatibility	Not supported
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.