Philips AZ7381 Service Manual page 9

FLOW CHART
"NEXT"
N
pressed?
Y
DISPLAY TEST 1
display shows
test pattern1
"NEXT"
N
pressed?
Y
DISPLAY TEST 2
display shows
test pattern2
"NEXT"
N
pressed?
Y
test pattern1 table1 – key test
KEYS OF SET
SHUFFLE REPEATALL PROG
PLAY
SCAN RESUME
NEXT
PREVIOUS
ESA/ESP
DBB 1 2 3
MODE
PROGRAM
DBB
test pattern2 Press "STOP" on the CD-player to exit the key test.
REPEATALL
SCAN
3-2
To enter service test program hold "MODE" & "STOP"-button
PRELIMINARY depressed, while turning POWER ON.
Door switch is ignored → CD-door can be opened.
SETUP
"STOP"-button pressed in any step returns to main menu.
Display shows
software-version
(e.g. "S- ")
19
MAIN MENU
Remark: Playback test can only
"MODE"
N
be entered if CD-door
pressed?
is closed!
Y
KEY TEST
Display shows
"--"
any button
N
depressed?
Y
"STOP"
Y
button?
N
check display
according to table1
table2 – playback error analysis
DISPLAY OF SET
CODE ERROR
3
E 1000 focus error
5
6
E 1001 radial error
2
7
E 1002 sledge in error
8
1
E 1003 sledge out error
E 1004 DRAM filling
error
E 1005 jump error
E 1006 subcode error
E 1008 turntable motor
error
E 1020 focus search
error
"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 CD7 indicates offtrack while radial
tracking is switched on.
non fatal The slide did not reach it´s inner pos.
(inner switch of CDM doesn´t close)
within approx. 6 seconds.
non fatal The slide did not come out of it´s inner
pos. (inner switch of CDM 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 of CD7 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).
3-2
"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
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
LASER IS SWITCHED ON !!
Note: If focus has
→ AVOID DIRECT EXPOSURE TO BEAM !!
been lost, focus
start-up procedure
is entered (ramping).
"PLAY"
"NEXT" "PREV"
N N N
pressed and
pressed? pressed?
focus OK?
Y Y Y
DISC MOT. TEST
Slide moves Slide moves
• Disc speed status
outside inside
" d" = speed OK
"-d" = speed error
• Focus status
Y
" F" = focus OK
"-F" = focus error
"PLAY"
N
and focus OK
and speed
OK?
Y
RADIAL TEST ATTENTION: JUMPS ARE AUDIBLE DURING PLAYBACK
• On track status (read remark on previous page) !!
" r" = on track
"-r" = not on track
• Disc speed status
" d" = speed OK
"-d" = speed error
• Focus status
" F" = focus OK
"-F" = focus error
"NEXT" "PREV"
N N
pressed?
pressed?
Y Y
CUE-MODE REVIEW-MODE
Track servo jumps Track servo jumps
16 tracks forward 16 tracks backw.
"MODE" "PROG"
N N
depressed? depressed?
Y Y
Disc motor turns Disc motor turns
clockwise counter-clockwise
(accelerate) (brake)
"MODE" "PROG"
N N
pressed? pressed?
Y Y
Disc motor turns Disc motor turns
clockwise counter-clockwise
(accelerate) (brake)
CS 46 518