Sanyo MCH-900F Service Manual page 20

i
REPLACING THE PRINCIPAL PARTS OF THE CD CliAN(3ER MECHANISM
d.
(a)
(b)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
REPLACING THE DISC CASE ELEVATOR SENSOR P. C. BOARD (315)
This P.C. board performs a very important function. as it must monitor the up, down, and Ioadinq status of the disd-cas%.
When replacinq the P.C. board, be verv careful so as not to adversely affect any of the other parts.
REPLACING THE P.C. BOARD (315)
Follow steps @ and @ below, in that order, to install the
spring coil (314).
Make sure not to install the spring coil backwards.
P. C. BOARD HEIGHT ADJUSTMENT
Set the POWER switch to the "ON" position and the
FUNCTION switch to the "CD" position.
Press the DISC 1 button.
The disc case lowers into position for the first disc.
Adjust the P. C.board height adjustment screw so that
the distance between the disc case and the chassis is
46.0 t 0,3 mm.
Next, press the DISC 6 button.
Once again, press the DISC 1 button.
Set the POWER switch to the "OFF" position and wait
about 15 seconds.
Set the POWER switch to the "ON" position.
Confirm that the distance between [he disc case and
the chassis is 46.0 f 0.3 mm.
If the distance is not 46.0 t 0.3 mm, repeat steps (2)
through (8).
(1O) After adjustments are complele, apply thread lock
(TB-1401 B) to the screw (31 1).
SPRING
(314)
P
1
DISC CASE
ELEVATOR
SENSOR PC.B (315)
f[~
– 1: 'Q
b
/?+
~"c ~
= ~
u
L1 ."~o
[&Q,
000
$
g
BRACKET ( 313)
w?
After adjusting the height, apply
screw
lock to the screw (311).
THREAD
LOCK
TB-1401B
T
SCREW
DISC CAS: (363)
(311)
-19-