3-
8
D
C
YES
NO
YES
YES
NO
NO
Does spindle rotate?
Proper
SPWM
signal on
CXD1885Q
Check
SPWM
related
circuit on
CXD1885Q
.
SP+ & SP- output
properly?
Check the spindle control
amp circuit of motor
driver.
Check the cable connection
between spindle and main PCBA.
YES
YES
NO
NO
Laser turns on when
reading disc?
NO
NO
YES
NO
YES
YES
NO
DV
D
LD
or
CDLD
output properly?
Check the laser power circuit
on
CXD1881
and connecting to
power transistor.
Collector voltage of
power transistor is OK?
Check the related circuit on
laser power transistor
Check cable connection between
transistor ouput and pick-up
head.
Put disc in?
Laser off
Disc ID is correct?
Proper RF
SIN
signal
on
CXD1881
?
Check the related circuit
on
CXD1881
RF
SIN
signal.
Check
DVDLD
&
CDLD
signal
YES
Содержание M55
Страница 26: ...2 SDRAM CLOCK FIG 2 1 3 TRAY OPEN CLOSE SIGNAL CH1 EJ CH2 EJ FIG 3 1 3 12 ...
Страница 28: ...5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION LDON FIG 5 1 CH1 DVD_LD CH2 CD_LD FIG 5 2 3 14 ...
Страница 29: ...6 FOCUS CONTROL RELATED SIGNAL NO DISC CONDITION FSCON FIG 6 1 CH1 FOCUS CH2 FOCUS FIG 6 2 3 15 ...
Страница 30: ...7 SPINDLE CONTROL WAVEFORM CH1 SPWM2 CH2 SPWM1 FIG 7 1 DVD CH1 SPWM2 CH2 SPWM1 FIG 7 2 CD 3 16 ...
Страница 31: ...8 FOCUS ON WAVEFORM FSCON FIG 8 1 CD FIG 8 2 DVD 3 17 ...
Страница 33: ...FIG 10 2 480P FIG 10 3 720P FIG 10 4 1080I 3 19 ...
Страница 34: ...11 RF WAVEFORM FIG11 1 CD FIG11 1 DVD 12 HDMI CH1 HSYN CH2 VSYN FIG12 1 480I 3 20 ...
Страница 35: ...CH1 HSYN CH2 VSYN FIG12 1 480P CH1 HSYN CH2 VSYN FIG12 1 720P CH1 HSYN CH2 VSYN FIG12 2 1080I 3 21 ...
Страница 36: ...13 ES6168F AUDIO OUTPUT TO AUDIO DAC CHI1 BITCLOCK CH2 LRCLOCK FIG 31 1 14 AUDIO OUTPUT 1KHZ 0DB FIG 14 1 3 22 ...
Страница 65: ...HS4 DVD_B008 VM1 0 RS232 P1 J2 1 6 5 RS232 P C BOARD TOP VIEW BOTTOM VIEW 3 64 ...