3-
9
YES
NO
YES
YES
D
NO
NO
NO
YES
NO
E
YES
Normal TEO Signal on
CXD1881
?
Check the related
circuit on
CXD1881
Track On OK?
Properly
T
SCON
signal on CXD1885Q?
T+ & T- output
properly?
Check the T
SCON
connection on
CXD1885Q
and motor dirver.
Check the tracking control
amp circuit on motor
driver.
Check cable connection on
pick-up head.
Disc is play ?
Check RF-OP & RFAC signal waveform.
NO
NO
YES
YES
YES
Focus ON OK?
Proper signals on
A,B,C,D of
CXD1881
Check connections between
CXD1881
and pick-up head.
Check FEO signal
on
CXD1881
Check
FSCON signal
on CXD1885Q
Check the F
SCON
connection on
CXD1885Q
and motor driver.
YES
NO
Summary of Contents for M55
Page 26: ...2 SDRAM CLOCK FIG 2 1 3 TRAY OPEN CLOSE SIGNAL CH1 EJ CH2 EJ FIG 3 1 3 12 ...
Page 31: ...8 FOCUS ON WAVEFORM FSCON FIG 8 1 CD FIG 8 2 DVD 3 17 ...
Page 33: ...FIG 10 2 480P FIG 10 3 720P FIG 10 4 1080I 3 19 ...
Page 34: ...11 RF WAVEFORM FIG11 1 CD FIG11 1 DVD 12 HDMI CH1 HSYN CH2 VSYN FIG12 1 480I 3 20 ...
Page 65: ...HS4 DVD_B008 VM1 0 RS232 P1 J2 1 6 5 RS232 P C BOARD TOP VIEW BOTTOM VIEW 3 64 ...