Service Test Program-Flow Chart - Philips ACT-500 Service Manual

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)
3 - 11
To enter service test program open the CD-door and
PRELIMINARY
hold "PLAY" & "MODE" buttons depressed while
SETUP
the set is swithed off .
Display shows
software-version
(e.g. "S- ")
12
MAIN MENU
"PREV"
N
pressed?
Y
KEY TEST
Display shows
"--"
Hold key depressed
and check display
according to table1
table1 – key test
KEY DISPLAY
DBB 01
ESP 02
MODE 03
PLAY 05
NEXT 06
PREVIOUS
07
VOL+
08
VOL- 09
Press "STOP" on the CD-player to exit the key test.
WRC key
PREVIOUS 07RC
NEXT 06RC
STOP
04RC
PLAY
05RC
VOL+ 03RC
VOL- 02RC
HOLD 01RC
"PLAY"
N
pressed?
Y
SERVO TEST
Display shows:
"Cd 11 "
• 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
outside inside
FOCUS TEST
• Focus status
" F " = focus OK
x
"-F x " = focus error ATTENTION: FROM THIS TEST ONWARDS THE
x = focus sensitivity
LASER IS SWITCHED ON !!
(see table4)
→ AVOID DIRECT EXPOSURE TO BEAM !!
Note: If focus has
been lost, focus
start-up procedure
is entered (ramping).
"PLAY"
"BASS" "NEXT"
N N N
pressed and
pressed? depressed?
focus OK?
Y Y Y
DISC MOT. TEST Toggle focus
Slide moves
sensitivity
• Disc speed status
outside
" d" = speed OK (see table4)
"-d" = speed error
• Focus status
" F x " = focus OK
"-F " = focus error
x
x = focus sensitivity
(see table2)
"PLAY"
and focus OK N
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 x " = focus OK
"-F " = focus error
x
x = focus sensitivity
"NEXT" "PREV"
N N
depressed? depressed?
Y Y
CUE-MODE REVIEW-MODE
Track servo jumps Track servo jumps
16 tracks forwards
16 tracks backw.
3 - 11
"MODE" "ESP"
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)
table2 – focus sensitivity
DISPLAY ESP-FLAG FOCUS SENSITIVITY
-F 01 off
Normal focus sensitivity for CDDA
Low focus sensitivity for
-F 02 on
high-reflective CD-RW
Medium focus sensitivity for
on
-F 03
normal-reflective CD-RW
High focus sensitivity for
-F 04 on
low-reflective CD-RW