Service Test Program - Philips EXP521 Service Manual

SERVICE TEST PROGRAM - FLOW CHART
STOP button pressed not in any step returns
*
to begin of Service Testprogram.
To leave Service Testprogram press STOP to
*
switch off.
Door switch is ignored → CD door can be opened.
*
* Volume up/down buttons function independentely
of the service testprogram.
DISPLAY TEST
key
n
"NEXT"
triggered ?
y
Servo Test
display
"DisplayPattern1 "
key
n
"NEXT "
triggered?
y
display
"DisplayPattern2 "
key
n
"NEXT "
Focus Test
triggered?
y
and
display
"DisplayPattern3 "
key n
"STOP"
triggered?
y
Disc Motor Test
and
"PLAY"
Pattern1
Radial Test
and
Pattern2
track servo jumps
16 tracks forward
Pattern3
3 - 8
power on and door must be open.
COMPACT DISC TEST
n
key "PLAY"
pressed ?
y
x = door switch
y = inner switch
display "S xy"
"0" = closed
"1" = open
n n n
key "PLAY" key "NEXT" key "PREV" key "MODE"
pressed ? pressed ? pressed ? pressed ?
y y y
Slide moves inside Disc motor turns
Slide moves
until inner switch is clockwise
outside
activated (accelerate)
x = focus status ESA-Flag = play mode
display "xF" " " = focus ok Flag lite = CD-RW compatible
"ESA-Flag" "-" = focus error Flag off = normal
n
key "PLAY"
n n
key "DBB" key "NEXT" key "PREV"
pressed and
pressed ? pressed ? pressed ?
focus ok ?
y y y
Slide moves inside
toggle play mode
Slide moves
between "normal" and until inner switch is
outside
activated
"CD-RW compatible"
x = focus status y =disc speed ESA-Flag = play mode
display "xF"
" " = focus ok " " = speed ok Flag lite = CD-RW compatible
and "yd"
"-" = focus error "-" = speed error Flag off = normal
"ESA-Flag"
key n
pressed and
focus ok and
speed ok ?
y
display "xF"
x = focus status y = disc speed z = on track status ESA-Flag = play mode
and "yd"
" " = focus ok " " = speed ok " " = on track Flag lite = CD-RW compatible
and "zr"
"-" = focus error "-" = speed error "-" = not on track Flag off = normal
"ESA-Flag"
n n
key "NEXT" key "PREV"
pressed ? pressed ?
y y
CUE-MODE REVIEW-MODE
track servo jumps
16 tracks backward
To enter Service
Testprogramm hold
PLAY & PREV buttons
depressed while pressing
Display shows:
Service Mode
n n
key "PROG" key "STOP"
pressed ? pressed ?
y y y
Disc motor turns
counter-clockwise
(brake)
n n n
key "MODE" key "PROG" key "STOP"
pressed ? pressed ? pressed ?
y y y y
Disc motor turns Disc motor turns
clockwise counter-clockwise
(accelerate) (brake)
key "STOP"
pressed ?
y
key "STOP"
pressed ?
y
3 - 8
KEY CODE TEST
key
n
" Mode"
triggered?
y
key
n
"Stop"
triggered?
y
n
n
any key
pressed?
y
display the
corresponding Code from
display "--"
the Key Table
for RC: show "RC"
see table1
Key test table
Set key Code Set key
n
STOP Exit PLAY
ALBUM - 1 PREV
ALBUM + 2 NEXT
GAME 3 PROGRAM
RC key Code RC key
STOP Exit ALBUM -
PREV 5rc PLAY
table1
F .... Fatal error W .... Warning
Error Typ Description
number e
1000 W focus error
Triggered when the focus is lost during playing the CD.
1001
W radial error
n
Triggered when the radial servo is off-track for a certain time during playing the CD.
1002 W sledge in error
The sledge did not reach its inner position (innerswitch is closed) before
approximately. 6 seconds have passed by - innerswitch or sledgemotor problem.
1003 W sledge out error
The sledge did not come out of its inner position (innerswitch is open) before
approximately 250ms have passed by - innerswitch or sledgemotor problem.
1004 W DRAM filling error
The DRAM controller was not able to connect two consecutive audio frames.
Therefore, the µP had to issue a direct audio connection that produces audible clicks.
1005 W jump error
Triggered when the jump destination could not be found within a certain time.
1006
W subcode error
No valid subcode for a certain time during play.
n
1008
W turntable motor error
Generated when the CD could not reach 75 % of speed during start-up within a certain
time. Discmotor problem
1020 F focus search error
The focus point has not been found within a certain time.
table 2
SERVICE PLAY MODE
N
"
"
Display button
pressed?
The set puts out error
messages if any problem is
detected in the difference
play states. see table2.
Code Set key Code
4 DISPLAY 8
5 MODE 9
6
7
Code RC key Code
1rc ALBUM + 2rc
4rc MODE 9rc