Table of Contents
Advertisement
mena
Ema
nen
mnmmenu
nate
am mnmamennnmre
mbit
LEE attainment
3-7
SERVICE TESTPROGRAM
STOP button
pressed?
CD SERVO TEST
button,
pressed?
Tray works as in normal mode.
Y
After activation of the tray
program returns to SERVO test.
SERVO test
Display shows
PROG. button
pressed?
Disc motor turns
counter clockwise
as long as button
is held depressed.
(brake)
DISC MOTOR test
(a)
SHUFFLE button
Disc motor turns
i
Slide moves
clockwise
:
outside as long as
as long as button
button is held
depressed.
(accelerate )
Slide can be activated in FOCUS test too:
check if Focus functions over the whole disc area
is held depressed.
|
Display shows
=r egg
— Play mode
MUTE is switched off
objective moves up&down
STOP button pressed in
FOCUS- or PLAY-TEST
returns to SERVO-TEST
N
Y
Display shows
N
PLAY button
pressed?
Ye
—
RADIAL test
= Play mode
MUTE is switched off
y.
N
NEXT button
PREV button
pressed?
pressed?
REVIEW - mode
jumps in steps of
16 tracks backwards
as long as button
is hold depressed.
CUE - mode
jumps in steps of
16 tracks forwards
as long as button
is hold depressed.
Purpose of PLAY test:
To check if the Audio signal is reproduced.
Subcode info is ignored during this test >
If the CD player functions well in this testmode,
but not in the normal Play mode check quality
of the eye-pattern signal.
Display shows absolute playing time of the disc
SLIDE test
Slide moves inside
as long as button
is held depressed
or inner switch
in order one can determine position of the slide.
PREV. button
pressed?
is activated.
Additional Information on the display
3-7
To enter Service
+ To leave Service Testprogram switch power off.
estprogramm 'hold.
PLAY & STOP butto
- depressed while s\
eseton.
* Function of Volume up/down (or rotary volume potmeter), DSC and /S
is independent of the service testprogram.
Display shows
version number
of the yP - software.
L_§5 5 88 _|
Slide servo, Radial servo, Focus servo, Disc motor
Tray motor and Laser are switched off.
Mute is switched on via decoder IC.
S stands for Service mode
DISPLAY TEST
SERVICE PLA
PROG bu
Display shows
of tuner board <
any key will be
e.g.
EL r
Display shows ail
segments and flags.
see figure 1
Service preset fr *
acc. table 2 are «
to the RAM.
Tuner is normal '
2» except the PRO(
button.?)
SHUFFLE REPEAT ALL PROGRA
STEREO FMMWLWAMSW
"ing lmma »)
TUNER
Be TTD)
po
Lil { bei 4
fig. 1
in SERVO and FOCUS test
A
fe
foo 88ae
IF - OFFSET correction
activated 1"),
|
C indicate key numbers acc. table 1
indicates status of inner switch:
J switch closed (slide inside)
indicates status of tray switch:
0 switch closed (tray closed or open)
i
f
Program CD
D:
Op
Play/Pause
Play/Pause
[ ]
ee
KEY CODES
KEY CODE
KI
a a
ca
Ce
a
=<
a
Incredible sound
17
! switch open
POWER
i
2
switch open (tray between end positions)
switched off?
Exit Service Testprogram
2) Preset frequencies of table2can
9)
be used as in normal tuner mode.
If fieldstrength is high enough
"PROGRAM" flag will light up.
Preset frequencies stored by the
customer are not influenced.
1) In sets with 30kHz grid on FM band it may occur that the
tuned frequency is indicated wrong on the display because
of tolerances of the discriminator filter.
For that reason the testsoftware is prepared for an
automatic IF-offset correction.
Note: This test functions only with the East European
tuner version /14/34,
The test was executed on every set in the production line.
In case the discriminator filter has to be exchanged
the automatic IF-offset correction should also be
executed after repair.
To execute the automatic IF-offset correction:
* feed a strong 87.5MHz signal to the antenna
* press the PROGRAM button
The uP starts now several times the search mode.
If the transmitter was found at 87.5MHz the stop-frequency sent by the
radio IC is compared with the nominal frequency. When the same
difference is found twice the value will be stored as offset.
The actual used offset is shown on the display ( -3, -2, -1, 0, 1,2, 3).
4,
Fema [
Foe [f=
a
ce
free | [=
table 1
Advertisement
Table of Contents
