Philips AZ9218 Service Manual page 15

SERVICE TEST PROGRAM – FLOW CHART
"NEXT"
N
pressed?
Y
DISPLAY TEST 1
display shows
test pattern 1
"NEXT"
N
pressed?
Y
DISPLAY TEST 2
display shows
test pattern 2
"NEXT"
N
pressed?
Y
test pattern 1 (all segments activated)
test pattern 2 (alternate segments activated)
table1 – key test
KEYS OF SET
DBB
PROGRAM
MODE
PLAY
NEXT
PREVIOUS
ESP (not for AZ7902)
KEYS OF CORD REMOTE CONTROL
STOP
PLAY
NEXT
Press "STOP" on the CD-player to exit the key test.
3-7
To enter service test program open the CD-door and
PRELIMINARY
hold "MODE" & "NEXT" buttons depressed while
SETUP
turning POWER ON (i.e. connecting the AC/DC adaptor)
Display shows
software-version
(e.g. "S- ")
13
MAIN MENU
Remark: Playback test can only
"MODE"
N
be entered if CD-door
pressed?
is closed!
Y
KEY TEST
Display shows
"--"
Hold key depressed
and check display
according to table1
table2 – playback error analysis
CODE ERROR
E 1000 focus error
E 1001 radial error
E 1002 sledge in error
E 1003 sledge out error
E 1004 DRAM filling
error
DISPLAY SET
1
2 E 1005 jump error
3
5
6 E 1006 subcode error
7
E 1008 turntable motor
8
error
4 rc
E 1020 focus search
5 rc
error
6 rc
"DBB"
N
pressed?
Y
PLAYBACK
TEST
Error during
N
playback?
Y
Display shows
error-code
(see table2)
N
Fatal error?
Y
Stop playback
EXIT
SERVICE TEST
PROGRAM
TYPE CAUSE
non fatal Focus point lost for at least 3ms.
non fatal The radial servo was offtrack for a
certain amount of time.
non fatal The slide did not reach it´s inner pos.
(inner switch of CD-drive doesn´t close)
within approx. 6 seconds.
non fatal The slide did not come out of it´s inner
pos. (inner switch of CD-drive is open)
within approx. 250ms.
non fatal The DRAM controller was not able to
connect two consecutive audio frames.
The microcontroller had to perform a
direct audio connection that produces
audible clicks.
non fatal The offtrack values don´t decrease
properly when jumping tracks, the jump
destination could not be found.
non fatal No valid subcode for approx. 230ms.
fatal During start-up, the disc speed did not
reach 75% of the nom. speed within
approx. 6 seconds.
fatal The focus point could not be found
within approx.
10 seconds (no valid TOC info), resp.
30 seconds (valid TOC info).
3-7
"PLAY"
N
pressed?
Y
SERVO TEST
Display shows:
"S xy "
• State of switches
x = door switch
y = inner switch
"0" = closed
"1" = open
"PLAY" "NEXT" "PREV"
N N N
pressed? depressed? depressed?
Y Y Y
Disc motor turns
Slide moves
Slide moves
inside until inner
outside
switch is activated
FOCUS TEST
• Focus status
" F" = focus OK
"-F" = focus error ATTENTION: FROM THIS TEST ONWARDS THE
= CD-RW mode
LASER IS SWITCHED ON !!
→ AVOID DIRECT EXPOSURE TO BEAM !!
Note: If focus has
been lost, focus
start-up procedure
is entered (ramping).
"PLAY"
"DBB" "NEXT"
N N N
pressed and
pressed? depressed?
focus OK?
Y Y Y
DISC MOT. TEST Toggle play mode
Slide moves
betw. "normal" and
• Disc speed status
outside
" d" = speed OK "CD-RW compatible"
"-d" = speed error
• Focus status
" F" = focus OK
"-F" = focus error
= CD-RW mode
"PLAY"
N
and focus OK
and speed
OK?
Y
RADIAL TEST
• On track status
" r" = on track
"-r" = not on track
• Disc speed status
" d" = speed OK
"-d" = speed error
• Focus status
" F" = focus OK
"-F" = focus error
= CD-RW mode
"NEXT"
N "PREV" N
depressed? depressed?
Y Y
CUE-MODE REVIEW-MODE
Track servo jumps Track servo jumps
16 tracks forwards 16 tracks backw.
"MODE" "PROG"
N N
depressed? depressed?
Y Y
Disc motor turns
clockwise counter-clockwise
(accelerate) (brake)
"PREV" "MODE" "PROG"
N N N
depressed? depressed? depressed?
Y Y Y
Disc motor turns Disc motor turns
Slide moves
clockwise counter-clockwise
inside
(accelerate) (brake)
CS 46 672