5-3
5-3
Insert disc in tray 1
before starting the test.
DISC 2 button
pressed?
STOP button
pressed?
N
N
Y
Y
Y
Y
STOP button
pressed?
N
Y
N
Display shows all
segments and flags
for checking open circuits.
Except for the Standby LED
all LEDs are switched on.
See figure 1 and table 1.
Display shows
and toggles
firmware versions of the
"WESSLI" board:
Lightbar bottom is switched
on and communication LED
is blinking.
Communication check:
WESSLI controller reads
MAC address of the wireless
LAN card.
Reading the SW versions
may take up to 20s.
Remark:
Reading the SW versions
may take a few seconds.
Remark:
Display shows figure 2.
All alternate pins (2, 4, ..)
of the µP display control pins
are activated
for checking short circuits.
See figure 2 and table 1.
DISPLAY TEST
5 Disc Tray Changer TEST
"WESSLI" FIRMWARE
VERSIONS
SOURCE button
pressed?
DISC 2 button
pressed?
T
button
pressed?
S
button
pressed?
fig. 1
MCW770 servtest 1, 17.07.04
N
N
N
Y
PC Link button
pressed?
N
Y
PC Link button
pressed?
N
fig. 2
table 1
Test frequency can easy be accessed on
Combi board, connector 1012, pin 3.
Nominal:
2048Hz (488,2813µs)
Tolerance: ±1s/day
2047,9763 - 2048,0237Hz
(
488,2869
-
488,2756
µs)
2)
N
Y
QUARTZ TEST
Display shows
2048Hz can be measured
on (pin 11 of µP).
2)
Display shows
2929
±
15Hz can be meas.
on (pin 11 of µP).
4
button
pressed?
N
Y
STOP button
pressed?
N
Y
4
button
pressed?
Tact frequency Front µP
divided 12MHz
Clock Oscillator
divided 32768Hz
1
1
CD source LED
TUNER source LED
AUX source LED
PC Link source LED
Light bar top
on
on
on
on
full brightness
on
pattern1
pattern 2
off
on
off
half brightness
OS V XXXX
32K
12M
APP V XXXX
PASSED
FAULT
PC LINK
Y
Y
Display toggles 3x
firmware version of
Control µP7801 and
version of the MP3 board:
5DTC-VXX
T
button
pressed?
N
Y
Display shows SW version
of the (TI)µP / MP3 decoder
located on the MP3 board:
TI-V22
T
button
pressed?
S
button
pressed?
N
N
Y
Y
Slide moves to inner side.
Display shows
TI-SLD I
T
button
pressed?
S
button
pressed?
N
T
button
pressed?
S
button
pressed?
N
N
Y
Y
Y
S
button
pressed?
N
Y
Focus search starts.
Display shows
else
As the slide has been moved to the utmost possible outside position before
the OPU may stand outside the regular data area of the disc.
Thus no Focus might be found.
To get a reliable result on the Focus test it is recommended to skip the Slide movement
by pressing
T
button twice in quick succession.
STOP button
pressed?
N
N
Y
Y
Slide moves to the outside.
Display shows
TI-SLD O
Communication check
between Front µP and
MP3 board.
Display shows
else
BUS OK
BUS ER
FOC OK
FOC ER
MP3CD 02
stands for Operating system
OP
stands for Application SW
APP
1)
1)
SERVICE TESTPROGRAM
PART 1
Note: the lightbar bottom and the PC link-communication LED
are controlled by the WESSLI board and thus not
activated in this test.
Display shows
else
* To leave Service Testprogram plug mains cord off.
* In the main menu the sound settings (volume, ...)
work as in normal mode.
stands for Service mode
stands for Version number
of the software used in the
Front (Display) µP.
To enter Service
Testprogram hold
2;´
& HOME buttons
depressed while
plugging mains cord in.
S-VXX
The display shows.
V
XX
S
PASS
N
Y
EEPROM TEST
Display shows
ERR
Display shows
Testpattern is written to
address 1
and
read back again
T
button
pressed?
STOP button
pressed?
Test ok?
N
Y
N
Y
N
Y
FORMAT EEPROM
Display shows
for 2s.
EEPROM is cleared and
default values are stored.
S
button
pressed?
This test should only be used to clear
the EEPROM in case of a µP-"hangup".
NEW
