Philips CMB1100/55, Service Manual

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22
NO.
5
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.
l. To check the voltage of the 8 pin of IC 603, should be +8V.
m. To check whether the rotation belt of deck mechanism is dislocation or loose.
j. To check the switch S601 on the servo board.
k. To check the rotation mechanism of CD deck mechanism.
h. To check the oscillation frequence of crystal X603 , should be 9MHZ.
i. To check the voltage of the 50 pin of IC 602, should be 3.3V.
f. To check the servo connector of CON601 ǃ CON602.
g. To check the oscillation frequence of crystal X602 , should be 16.9344M.
d. To check whether the 17 P 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.
failure phenomena failure cause remark
4
&'GHIHFWLYH
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 mecahnism, or whether the
disc is enter in position.
c. To check whether it is normal when reading USB?