Samsung MAX-485 - Page 31

7-2. CD section
7-2-1. Malfunction in DISC circuit
SLED IN ?
“LENS
Oke
~ LASER power ~
ok ?
we
a “The voltage of
WCWE6(FOK dis-
“~ connector) is
= wer
= ae
OY sv
an
ae PS
z
AS
~
~~ Check the voltage ~~
e
of WICO1 pin#33).
™_ (H->L->H)
\
= ~~ for XIC1(PIN1) is
> 33.8688 MHz\16.9344
a up/down movement —
>
he output for
WIC01 pin #40 is
2.5V for STOP and
OV for the pick-up
moving inside
we
WIC61
pin#17,18
<< senerates 0 V for STOP
and 3.3V for the moving
SS
inside ?
xX
X _~ The oscillation
Mhz) and Vp-p mort
than 1 V?
vy
pis
xX ZZ Cheek for the
_~ voltage of WICO1pin ~~ x
o ig i 4.8V for STOP
and 3.3V for PLAY?
SY
ae
A Cheek for te
‘voltage fo Le
1.2V for STOP and
a for ee te
ye
Replace WIC1
X Check WIC61 pattern.
Replace it if necessary
Check XIC1 PATTERN.
Replace it if necessary.
Pa
xe ie
~~ Check for the @)
se voltage of WIUCO1
(PIN60): 5V for oe
Replace
WIC1
Check f for SS
W051,52,52; SX
WCW6 RESET dis-connector.
(PLAY:5V, STOP:0V)
TSS STOP and OV for
PLAY ?
Replace
WIC1
| Replace pick-up
| Check WQ1 operation and replace it
OV
Check the voltage of WICO1 pin#59
(FOK).STOP:0V, PLAY:5V
X
WICO1.
Check for the pattern and voltage of
Check the voltage of WIC61 pin #11,12 for (SP+,SP-) |