Panasonic RX-DT505 - CD Section Measurements and Adjustments; Self Diagnostic Function

i, RX-DT505 RX-DT505 |
@ ALIGNMENT POINT
<CD SECTION>
Caution: ah we Moat, 18 ePlease refer to Circuit Board and Wiring Connection Diagram for test point locations.
@\t is very dangerous to look at or touch the laser beam. (Laser radiation is invisible.)
With the unit turned “on”, laser radiation is emitted from the pickup lens. BEST EYE Mechanical adjustment screw
Avoid exposure to the laser beam, especially when performing adjustments.
]
Measuring Instruments and Special Tools
eTest disc @Allen wrench (M2.0) (SZZP1101C)
1. Playability test disc (SZZP1054C) Oscilloscope
2. Uneven test disc (SZZP1056C)
y
[ Solder the lead wire
intothe soldered =|
Mechanical Lo
adjustment hole
(1) MECHANICAL ADJUSTMENT
eWhen the traverse deck is replaced, making adjustments is
not necessary. (The traverse deck ass’y is already ad-
justed.)
Make adjustments to improve playability when the traverse
deck has not been replaced. Make the electrical adjust-
ments first.
1.
Connect
the
oscilloscope's
CH.
1
probe
across
KATA
MAAARASA
SO?
Fig.
5
+) an i onthe Seno PCE. LAA AAAAAA KAA
YANN
ISS0.0.0,08.00.75
a
ee
on
carers
\\
AVA
|
Input coupling ................e ccc ee eee AC \| \A\VAY AAA |_| SELF DIAGNOSTIC FUNCTION
7
peat
al
ea
crepes
waging
Mie
\\V\
VV
VVVVYYV"
The
Self
Diagnostic
Function
is
equipped
with
RX-DT505.
Use
this
function
only
when
you
wish
to
check
the
3.
Leave
the
player
in
Play
mode
and
place
it
as
shown
XY
NYY
VYVVY
VY
rY\
!
following
items.
in
the
figure
on
the
right.
CX
XOOOODOX
(It is
necessary
to use
the
remote
controller supplied
with
RX-DT505
for
the
self
diagnostic
function.)
4.
Alternately
adjust
the
two
mechanical
adjusting
L
eee
ee
Check
of
all
indicati
eCneck
of
all
Indications
on
When you adjust the mechanical
adjustment, play track 19 on the test
disc (SZZP1056C).
CD P.C.B.
Extension cable (RFKZ0009) Allen wrench
2-pin connector (SZZP1101C) (2mm)
Fig. 6
screws
with
the
2.0
mm
allen
wrench
(SZZP1101C)
pene
Use
the
di
tic
functi
n
LCD
is
not
displayed
I
until
the
RF
signal
amplitude
variation
on
the
oscillo-
@®
Minimize
the
variation
of
amplitude.
eCheck
of
LCD
short-circuit
Beas
eee
gern
Be
ee
a
aaa
scope
is
minimized.
(Shown
in
Fig.
6)
5.
After
completing
the
adjustment,
lock
the
mechanical
[How
to
set
the
self
diagnostic
function]
adjustments
with
lock
paint
(RZZOLO1).
Follow
the
procedures
outlined
below
to
set
the
self
diagnostic
function
mode
before
the
self
diagnostic
function.
1. Connect the AC power cord of the RX-DT505 to an AC outlet and
turniton.
(2) BEST EYE (PD BALANCE) ADJUSTMENT
2. Press the 4” button and afterward “7” button the remote |
1. Connect the oscilloscope’s CH.1 probe across
udey4 (+)and pisygek} (V-REF) on the Servo
‘4 PA NAIMAMAA AAA AAA AOS?
& \ VARAAAAAARAA
A\\\\
conntrolier while keeping the TAPE/U button pressed.
oe The indication in Fig. 1 will be displayed.
b ( ! a fe
Gachloscons setting: AMMAMAARAA |
oo ONE airs Sener eee 200 mV \\ VWVYVWV\\ \\i
SWEEP j.cue waittnesnieiss macau osc 0.5 usec \ h ) /\ 4 Fig. 1
Input coupling ......... 0.0 cece eee eee eee AC AVY VVYVV \/ \/ \/ \/ \/ \\
2. Switch the player power ON, and play the 1 kHz (track /\ XY i f\ ('\ [NY \ )
1) on test disc (SZZP1054C). VVVNVVVUVY VV VV
3.
Adjust
VR701
until
the
RF
signal
eye
pattern
ampli-
||
(DOOR,
on
ALL
INDICATIONS
ON
THE
LCD
;
tude
is
maximized.
LY
Pee
Pe
et
LS
ress
the
“8”
button
on
the
remote
controller.
All
indications
will
——-
aa appear for about 1 second on the LCD. (Refer to Fig. 2) ON CSWEE TIMER-REC_OFF (SEE) SLEEP VOLUME
If
an
indication
is
not
displayed,
the
LCD
or
the
LCD
drive
system
is
|
i
ai
ae
Wd
ier
lic
Abe
:
I=}
Maximize the amplitude defective. DTDBCOOMNOODHEES CD ms
| PROGRAM ) (RANDOM (mono } Ctiwk) Tepit> Cates”
(3) CHECK OF PLAY OPERATION AFTER ADJUSTMENT Fig. 2
‘Checking Skip Search “Checking Playability
1. Play an ordinary musical program disc. 1. Play the 0.7 mm black dot and the 0.7 mm wedge on
2. Press the skip button to check for normal skip search the test disc (SZZP1054C) and verify that no sound CHECK OF LCD SHORT-CIRCUIT
operation (in both the forward and reverse direc- skip or noise occurs. @Press the “9” button on the remote controller. The indications will PES
ti 2 Pl is iddi . appear as shown in Fig. 3. I id | a = I
ions).
-
Play
the
middie
tracks
of
the
phe!
test
disc
and
If
another
indication
appears,
the
LCD
is
defective.
ae
Ese
NR
alah
SP
rt
‘Checking
Manual
Search
verify
that
no
sound
skip
or
noise
occurs.
C
1. Play an ordinary musical program disc.
2. Press the manual search button to check for smooth Fig. 3
manual search operations at either low or high speed
| {in both the forward and reverse directions).
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