Cd Service Test Program - Philips AJ3950 Service Manual

CD SERVICE TEST PROGRAM

* STOP button pressed in any step returns
to begin of Service Testprogram.
* To leave Service Testprogram switch mode switch
to off-position.
Door switch is ignored Æ
* CD door can be opened.
* Volume up/down buttons function independentely
of the service testprogram.
fig. 1
PCS 107 255
4-2
CD TEST
To enter Service
Testprogramm hold
BAND & PLAY buttons
depressed while power
up the set.
Display shows
version number Slide servo, Radial servo, Focus servo, Disc motor
of the µP - software. and Laser are switched off.
r001 Mute is switched on via decoder IC.
DISPLAY TEST BUZZER TEST
CD SERVO TEST
N ALARM 1 button SET DAY button PLAY button
N N
pressed? pressed? pressed?
Y Y
Y
Display shows all Display shows
Display shows
segments and flags.
AL
01
see figure 1
Buzzer is turn on.
N STOP button N STOP button N
SLEEP button
pressed? pressed? pressed?
Y Y Y
FOCUS search
Display shows
noFo
objective moves up&down
disc motor for 160ms "on"
N
FOCUS found?
Y
Display shows
Fo
disc motor turns.
STOP button N
pressed?
Y
For entering the Factory and Service mode keep BAND and NEXT keys pressed while power up (plug-in) the set.
The set will enter CD repeat all mode.
For entering the Factory and Service mode keep BAND and PREV keys pressed while power up (plug-in) the set.
The set will enter CD repeat one mode.
SLIDE test DISC MOTOR test
N N 24 HR RESET N N
NEXT button PREV. button
SET DAY button
pressed? pressed? button pressed?
pressed?
Y Y Y Y
Disc motor turns Disc motor turns
Slide moves Slide moves
counter clockwise clockwise
outside as long as inside as long as
as long as button as long as button
button is held button is held
is held depressed. is held depressed.
depressed. depressed.
(brake) (accelerate)
4-2
N
WEEKEND SLEEPER
button pressed?
Y
Enable
CD-RW mode
and shows
FM flag.