29
4. Troubleshooting Guide (In the Operation Mode)
When the jump is unstable (Noise occurs);
(1) Readjust the Slide Motor offset.
(2) Replace Main Circuit Board or MD Assy.
When the Pick-Up slides to innermost track or outermost track during the Access;
(1) Replace MD Assy.
When the High Speed operating (8~16 times) is performed, but normal speed operating (1 time) for
Audio CD is unstable;
(1) Perform Down Load again.
(Refer to Owner’s Manual)
(2) Replace MD Assy.
During Audio CD play, LED flickers, but Speaker is silent;
When the headphon volume is not controlled;
(1) Replace VR301
Others (Video CD is not played, screen is abnormal or some title is not played.)
: Troubles for Compatibility
5. When the data read failure of CD-ROM Disc
(1) Check the CD-ROM Disc.
(2) Check the IC's in the decoder and interface circuit.
a) DRAM : IC601
b) CD-ROM Decoder & E-IDE Controller : IC602
c) Microprocessor : IC401
G
H
I
J
J-1
K
Does PWM signal appear
in IC501 pin ?
Replace
IC501.
YES
NO
82
83
,
91
,
92
,
Does Audio signal appear
in IC301 pin ?
Replace
IC301.
YES
NO
1
7
,
Are L-CH and R-CH
signals appeared in
JK301 and JK302 each?
Replace
L310, L311.
YES
NO
Is the connection between
JK301(or JK302) and Line
(or Jack) normal?
Normal.
Speaker is defective.
YES
NO
