Philips AZ1138, Руководство по обслуживанию

Страница: 12 / 40

4 - 2 4 - 2
STOP button pressed in any step returns
to begin of Service Testprogram.
NEXT button
pressed?
STOP button
pressed?
N
Y
Y
Y
Display shows all
segments and flags.
see figure 1
DISPLAY TEST
CD SERVO TEST
Display shows
version number
of the µ+P - software.
PLAY button
pressed?
Display shows
PLAY button
pressed?
NEXT button
pressed?
PREV. button
pressed?
PRESET DOWN
pressed?
PRESET UP
pressed?
Slide moves
outside as long as
button is held
depressed.
Slide moves
inside as long as
button is held
depressed.
Y Y Y Y Y
N N N N N
FOCUS found?
Y
N
Display shows
objective moves up&down
disc motor for 160ms "on"
STOP button
pressed?
Y
N
Display shows
disc motor turns.
FOCUS search
SLIDE test DISC MOTOR test
To enter Service
Testprogramm hold
PLAY & MODE buttons
depressed while switching
CD mode on.
fig. 1
*
*
*
To leave Service Testprogram switch mode switch
to off-position.
Door switch is ignored
→
CD door can be opened.
Slide servo, Radial servo, Focus servo, Disc motor
and Laser are switched off.
Mute is switched on via decoder IC.
* Volume up/down buttons function independentely
of the service testprogram.
N N
NEXT button
pressed?
STOP button
pressed?
N
Y
Y
Display shows all
segments and flags.
see figure 1
DISPLAY TEST
Display shows
version number
of the µ+P - software.
To enter Service
Testprogramm hold
PLAY & STOP buttons
depressed while switching
TUNER mode on.
N
Y
table 1
N
MODE button
(Tuner)
pressed?
Service preset frequencies
acc. table 1 are copied
to the RAM.
Tuner is normal working
except the MODE key.
STOP button
pressed?
N
Y
TUNER TEST
SERVICE PRESET FREQUENCIES
1)
How to set frequency grid:
AM - 9 kHz / FM - 50 kHz : Hold PLAY KEY with the PRESET DOWN KEY simultaneously and then switch to TUNER.
AM - 10 kHz / FM - 100 kHz : Hold PLAY KEY with the PRESET UP KEY simultaneously and then swutch to TUNER.
Selected frequency grid is stored in the EEPROM.
CD TEST TUNER TEST
Disc motor turns
clockwise
as long as button
is held depressed.
(accelerate)
Disc motor turns
counter clockwise
as long as button
is held depressed.
(brake)
-2FOC
01
16
PREV button
pressed?
Y
N
Display shows
EP
E2prom clear
STOP button
pressed?
N
Y
EP2PROM CLEAR
2FOC
REGION
EUROPE EUROPE2B OVERSEAS EAST-EUROPE USA
FM/MW/LW FM/MW FM/MW FM/MW FM/MW
1)
Grid switchable
10-100kHz/9-50kHz
PRESET
/00/05/20/25 /00 /01/21 /14 /14/37
1 87.5 MHz
87.5 MHz 87.5 MHz 65.81 MHz 87.5 MHz
2108 MHz 108 MHz 108 MHz 108 Mhz 108 MHz
3 531 kHz 531 kHz 531/530 KHz 74 MHz 530 kHz
4 1602 kHz 1602 kHz 1602/1700 kHz 87.5 MHz 1700 kHz
5 558 kHz 558 kHz 558/560 kHz 531 kHz 560 kHz
6 1494 kHz 1494 kHz 1494/1500 kHz 1602 kHz 1500 kHz
7 153 kHz - - 558 kHz -
8 279 kHz - - 1494 kHz -
9 198 kHz - - - -
10 - - - - -
11 - - - - -
12- - - - -
13 - - - - -
16
In sets with 30kHz grid on FM band it may occur that the
tuned frequency is indicated wrong on the display because
of tolerances of the discriminator filter.
For that reason the testsoftware is prepared for an
automatic IF-offset correction.
Note:
To execute the automatic IF-offset correction proceed as follows:
* feed a strong 87.5MHz signal to the antenna
* press the PLAY button
The µP starts now several times the search mode.
If the transmitter was found at 87.5MHz the stop-frequency sent by the
radio IC is compared with the nominal frequency else the display shows "00E".
F When the same difference is found twice the value will be stored as offset.
The actual used offset is shown on the display ( -3, -2, -1, 0, 1, 2, 3 ).
2)
This test functions only with the East European
tuner version used in /14/34 set versions.
The test was executed on every set in the production line.
In case the discriminator filter or the EEPROM has to be
exchanged the automatic IF-offset correction should also be
executed after repair.
ERROR MEANING
STATUS MEANING
Err 1 No focus found
Sta 0 Silde mode
Err 2Time out error for disc motor reach the normal speed
Sta 1 Silde mode
Err 3 Focus error during tracking initialization
Sta 2Silde mode
Err 4 Subcode error on play mode
Sta 3 Silde mode
Err 5 Focus error on play mode
Sta 8 Play mode
Err 6 Radial error on search mode
Sta > 8 Recover mode
Err 7 Focus error
table 2
table 3
F M A M M W
REPEAT ALL
PROGRAM SHUFFLE MP3 CD
SERVICE TEST PROGRAM