Service Testprogram - Philips AZ1009 Service Manual

SERVICE TESTPROGRAM

SERVICE TESTPROGRAM
DISPLAY TEST
NEXT button
N N
pressed?
Y
Display shows all
segments and flags
for checking open circuits.
see figure 1
N NEXT button
pressed?
Y
FOCUS search
Display shows figure 2.
All alternate pins (2, 4, ..)
of the display are activated
for checking shortcircuits.
N STOP button
pressed?
Y
REPEAT SHUFFLE
ALL
PROGRAM
fig. 1
REPEAT SHUFFLE
automatic
adjustment of
TRACK BALANCE
fig. 2
Y N
MODE button
pressed?
automatic
adjustment of
FOCUS GAIN
Y N
MODE button
pressed?
automatic
adjustment of
TRACK GAIN
Y N
MODE button
pressed?
RADIAL test
N NEXT button
pressed?
Y
CUE - mode
jumps in steps of
servtest EVA, 021097
16 tracks forward
3-10
To enter Service
To leave Service Testprogram switch
*
Testprogramm hold
CD mode off.
PLAY & STOP buttons
Door switch is ignored → CD door can be opened.
depressed while switching *
CD mode on.
Display shows
Slide servo, Radial servo, Focus servo, Disc motor
version number
of the µ P - software.
and Laser are switched off.
Mute is switched on via decoder IC.
CD SERVO TEST
PLAY button STOP button pressed in any step returns
pressed? to begin of Service Testprogram.
Y
Display shows
SLIDE test DISC MOTOR test
N PLAY button NEXT button N PREV. button N
pressed? pressed? pressed?
Y Y Y
Display shows
Slide moves inside Disc motor turns
Slide moves
as long as button
outside as long as
is hold depressed as long as button
button is hold
objective moves up&down or until inner-switch is hold depressed.
depressed.
is activated.
disc motor for 160ms "on"
To check Focus over the whole disc area
N
FOCUS found?
Slide - and Discmotor can also be activated
in FOCUS - test.
Y
Display shows
disc motor turns.
N
PLAY button
pressed?
Y
Display shows
while autom. track balance adjustment is active
as soon as track balance adjustment finished.
(1 - 6) indicates the actual setting.
N
PLAY button
pressed?
Y
Display shows
while autom. focus gain adjustment is active
as soon as focus gain adjustment finished.
(1 - 6) indicates the actual setting.
N
PLAY button
pressed?
Y
Display shows
while autom. track gain adjustment is active
as soon as track gain adjustment finished.
(1 - 6) indicates the actual setting.
track servo switched on
PLAY button N
pressed?
Y
Purpose of RADIAL test:
Display shows
To check if the Audio signal is reproduced.
Subcode info is ignored during this test →
→ Play mode
MUTE is switched off If the CD player functions well in this testmode,
but not in the normal Play mode check quality
of the eye-pattern signal.
PREV button N
pressed?
Y
REVIEW - mode
jumps in steps of
16 tracks backwards
1)
CD PLAY TEST
MODE button
N
pressed?
Y
CD is in normal
PLAY mode.
In case of failures
error codes acc. table 1
will be indicated
on the display.
MODE button N
pressed?
Y
POWER
N
switched off?
clockwise Y
(accelerate )
Exit Service Testprogram
1)
The CD PLAY TEST is intended to be used
for continuously playing a disc in order to
detect intermittend or not reproducible
failures. The error code indicates where
the failure can be found.
If the margin settings 0 or 7 are displayed the required
setting is possibly out of the adjustment range.
→ check disc drive and/or electronic circuitry
3-10
CD ERROR codes
Error number Error description
E0 Focus Error
Triggered when the focus is lost for more than 250ms during playing the CD.
E2 Slide-in error
Generated when the inner-switch did not close within approx. 4s when the pick up is
moved inside. Inner-switch or slide motor problems.
E3 Slide-out error
Generated when the inner-switch did not open within approx. 250ms when the pick up is
moved from the inner position outside. Inner-switch or slide motor problems.
E5 Jump error.
Triggered when the servo processor counts too less tracks in a defined time during JUMPS.
This can be caused by a disturbed HF-signal (the tracks cannot be recognized exactly),
slide motor problems, track servo problems or scratched discs.
E6 Subcode Error
No valid subcode for 300ms during PLAY .
E7 PLL lock error
When the PLL did not lock after 10 retries then this warning message is generated and
the servo is stopped and restarted (as if the user would have pressed STOP and then
PLAY immediately) to recover.
F0 Focus Search Error
Triggered when the focus could not be found within 3s when starting up the CD.
F2 Fatal Subcode Error
No valid subcode for more than 4s during PLAY .
table 1
→
Error type: W = Warning set continues operation, message remains on the display until next error occurs
or any key is pressed.
F = Fatal Error →
set stops operation, message remains on the display.
(The set can only be operated again via a reset )
Error type
W
W
W
W
W
W
F
F
CS 49 119