Sony CDP-H3700 - Test Modes; Test Mode of Display Microcomputer (IC401); Test Modes of CD System Controller (IC202)

2-L.
Test
tlode
of Display
Microcomputer (tC401)
Connect Pin
@
of
IC40l
to
ground
and tum ON
the
pOWER
switch,
thus
you
can test the
following
3
tests.
(f)Nl
FL
tube ON
This
mode is
acruared
immediately
afrer
ruming
ON
the
pOWER
switch.
(2)FL
tubc
scgment check
This
mode
is
actuared
by
pressing
the
@
key
in
the state
of
(l).
Every
time the
@
key is
pressed,
the-segmenæ
are
indicated
scquentially
from the
segment
a.
When
the
last
I
segment is
displayd
keying in is
no
longer
accepted while
continuing
the
lighting-up
state of the last
segment.
Conditions
are normal
provided
all lamps lighr
up in
the following
order.
(3)KEY
check
This mode
is
effected
by
pressing
the@ key
in
the
state
of
(l),
while
indicating
"l."
Every
time
a new
key is
presscd
subse-
quently,
the indicated
number is
incremented.
Conditions
arc
normal
provided
"7"
is indicated when
all types
of keys
are
prcssed.
Even if
a key
is
prcssed
again, it
is not
counted.
.
To
leave
the mode
(2)
or
(3),
press
the@andfifl
keys in
duplication,
thercby
the mode
rerurning
to
all ON mode.
3G
i
(o
sEcTroN
2
TEST
MODES
2-2.
Test tlodes
of
CD
System
Controiler
(tC2O2l
(I)ADJUSTmode
When
this
mode
is effected,
the
machine is
operated
normalty
except
for
the following.
.
when
pin
{D,
IC20l
(ADJ)
is ser
ro
..L"
after rurning
oN
the
POWER
swirch:
I . GFS is
no longer
monitored
during
PLAY, PAUSE
or
SEARCH,
while
not
sropping
even
with
GFS
rcmaining
srill
ar. L"
(NG).
2. No high-speed
feeding
is activated
during
SEARCH.
3.
Focus
gain
is
reset
to normal
gain
during PLAY
(normally,
the
gain
is
lowered
to
reduce noise when
FOCUS
is
locked).
.
When
Pin
@, IC20t
(AFADJ)
is
set ro..L"
after tuming
ON the
FOWER
switch:
l. Regardless
of
Pin @
(ADJ)
of
the
CLV-S fixed function,
the
CLV
mode
during
PLAY
becomes
CLV-S
(rough
servo) only while
Pin
e remains "L".
(2)AFADJUST
mode
In
this mode,
it is
possible
to check the
interface
between
the
display
micon
(IC4OI)
and
CD
syscon
(IC20l).
.
Set Pin
@, IC20l
(AFADJ)
ro "L"
before rurning
ON rhe
FOIryER
switch.
l. Every time
the
@key
is
pressed
after turning
On
the
pOWER
switch,
indication
on the FL
tube is
switched
conespondingly.
Conditions
are normal
provided
the
indication
rcpeats
the
4
patterns
including
all lamp
ON.
T[mON
the FOIITER
after connectins
Pin@.rc4or
6cNp.
All FL tube
lamps
ON mode
Duplicated
pressing
of
El
and[fl
r.7
18
19 20
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