Philips CED780/05, Service Manual

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NO.
failure
phenomena
failure cause remark
5 CD/DVD
defective
a. To check whether the signal format of the disc is correspond to the request of the unit, whether there is any
contamination or damage or light leakage on the surface of the disc.
b. To check whether there is any abnormal of the rotation of the deck mechanism, or whether the disc is enter in
position.
c. To check whether it is normal when reading USB?
d. To check whether the 24P FFC of laser pick up is inserted in place, whether the socket of it is loose.
e. To check whether there is any contamination or foreign body on the surface of the laser pick up.
i. To check the rotation mechanism of CD/DVD deck.
f. To check the servo board connector of CN3 and the main board connector of CN1, whether the socket of it is loose.
h. To check the switch SW1 on the servo board.
g.To check the voltage of the 9 pin ~ 12 pin of the CN1 , should be +5V0.
6
USB/SD
defective
a. To check whether the USB/SD signal format is correspond to the request of the unit.
b. To check the voltage of the USB connector of the left first pin , should be +5V.
c. To check whether there is any wearing and scratch of the shrapnel and pin of the panel USB.
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e.To check whether there is any contamination and bad contact on the male/female connector of the panel and main
board. If necessary, can exchange the panel to test whether the defective is occurred by the unit or panel.
7 AUX defective
a. To check the SOURCE shoule be in MP3-LINK mode.
b. To check the AUX IN input signal.
c. To check whether there is any contamination and bad contact on the male/female connector of the panel and main
board. If necessary, can exchange the panel to test whether the defective is occurred by the unit or panel.
BT defective
d. To check the servo board connector of CN3 and the main board connector of CN1, whether the socket of it is loose.
a、Check the unit should be in pair with the BT phone connection status
b、To check the 9 pin of the BT module,should be +3V3、
c、To check the CN8 connector、
9
GPS defective
a、To check the micro SD memorizer of the map of the GPS、
b、To check the GPS antenna of the tail of the unit、
c、To check the connectors of the CON2 CON8 CON9 whether the socket of it is loose、
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