Philips CDR785/00 Service Manual page 31

5-6
To enter Service
Testprogram hold * To leave Service Testprogram plug mains cord off.
CD y CD & NO buttons
depressed while
plugging mainscord in.
On/Off switch in pos. ON
S
Display shows
stands for Service mode
version number
VXX
stands for version number
of the µP - software.
of the software used in the
S-CDR785-VXX
front µP.
DISPLAY TEST
STEP
1 2 3 4 5 6
CD RW
2 6
R
QUARTZ TEST
N REW 5 button
DISPLAY button
pressed? pressed?
Y
Tact frequency µ P
(divided 12MHz)
Display shows all
Display shows
segments and flags
12M
for checking open circuits.
see figure 1
1465±44Hz can be measur.
CD1, CD3, AUX and blue (pin 9 of µP).
on
1
LEDs are switched on.
STOP button
N
DISPLAY button
pressed?
pressed?
Y
Display shows figure 2.
All alternate pins (2, 4, ..)
of the display are activated
for checking shortcircuits.
CD2, CDR, YES and red
LEDs are switched on.
N STOP button
pressed?
Y
REC TRACK TIME
TEXT TOTAL TRACK TIME TOTAL REM
7 8 9 10 11 12 13 14 15 16 17 18 19 20 +
COMPILE CD TRACK PROG DIGITAL 12
CD RW
OPTICAL 12
SHUFFLE REPEAT ALL EDIT
ANALOG
RECORD IN PROGRESS FINALIZE ALC
fig. 1
TRACK
TOTAL TIME REM
2
R
1
FINALIZE
fig. 2
SERVICE TESTPROGRAM
VARIOUS TESTS
KEY TEST
FFWD 6 button
N N
pressed?
Y Y
1)
Display shows
KEY --
Numbers acc. table 3
are indicated as long as a
button is held depressed.
If a button is pressed
on the Remote Control
KEY RC is shown
and the ; flag flashes.
N
Y
STOP button
N
pressed?
Y
1)
If the ON/OFF switch is in the position OFF , all other keys
are blocked and display will show 29 all time.
TRACK EDIT
REC LEVEL
OPEN/CLOSE
COMPILE CD
5-6
ROTARY ENCODER
TEST
N
JOG CONTROL JOG CONTROL
turned ccw?
Y
Display shows Display shows
JOG LEFT JOG RIGHT
for 2s.
KEY CODES
KEY KEY CODE KEY KEY CODE
CD y CD
STOP exit test 15
1 CDR 16
PROGRAM 2 AUX 17
TEXT 3 CD3 18
CD2 19
BALANCE 4
5 CD1 20
YES 6 CD TEXT 21
NO 7 REPEAT 22
FFWD 6
8 DISPLAY 23
REW 5
9 SHUFFLE 24
10 CD CHANGE 25
(CDR)
FINALIZE 11 PLAY/PAUSE 26
OPEN/CLOSE
ERASE 12 27
(CDC)
REC TYPE 13 ON/OFF 29
14
table 2
N
turned cw?
Y
for 2s.
CDR785 servtest, 150200