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LIDE test
ode,
lity
disc
slide.
PREV. button
pressed?
Slide moves inside
as long as button
is held depressed
or inner switch
is activated.
Additional Information on the display
in SERVO and FOCUS test
3-7
To enter Service —
* To leave Service Testprogram switch power off.
_Testprogramm hold
PLAY &STOPbuttons
depressed while switching
the set on.
y
* Function of Volume up/down (or rotary volume potmeter), DSC and /S
is independent of the service testprogram.
Display shows
.
Slide servo, Radial servo, Focus servo, Disc motor
version number
Tray motor and Laser are switched off.
Mute is switched on via decoder IC.
5 stands for Service mode
of the uP - software.
DISPLAY
TEST
NEXT button
pressed?
Display shows ail
segments and flags.
see figure 1
STOP button
pressed?
DUBBING
fi
'Te o.0 Oo
m
WIL
fig. 1
IF - OFFSET correction
activated 1).
'|
| indicates status of inner switch:
J switch closed (slide inside)
indicates status of tray switch:
U switch closed (tray closed or open)
f
t
KEY CODES
Incredible sound
Pee
indicate key numbers acc. table 1
! switch open
switch open (tray between end positions)
1) 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: This test functions only with the East European
tuner version /14/34.
~
The test was executed on every set in the production line.
In case the discriminator filter has to be exchanged
the automatic IF-offset correction should also be
executed after repair.
,
To execute the automatic IF-offset correction:
* feed a strong 87.5MHz signal to the antenna
* press the PROGRAM button
The uP starts now several times the search mode.
If the transmitter was found at 87.5MHz the stop-frequency sent by the
'tadio IC is compared with the nominal frequency. 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).
table 1
SERVICE PLAY TESTS
Display shows version
of tuner board as long as
| any key will be pressed.
Service preset frequencies
acc. table 2 are copied
to the RAM.
Tuner is normal working
sef except the PROGRAM
POWER
switched off?
Exit Service Testprogram
2) Preset frequencies of table 2 can
be used as in normal tuner mode.
If fieldstrength is high enough
"PROGRAM" flag will light up.
Preset frequencies stored by the
customer are not influenced.
button.)
CD PLAY
TEST 3)
CD is in normal
PLAY mode.
In case of failures
error codes acc. table 3
will be indicated
on the display.
POWER
switched off?
Y
Exit Service Testprogram
5) The CD PLAY TESTis intended to be used
for continuously playing a disc in order to
detect intermittend or not reproducible
failures. The error code indicates where
the failure can be found.
SERVICE PRESET FREQUENCIES
USA
OVERSEAS |
OVERSEAS
FM/MW
FM/MW
FM/MW/SW
4)Grid switchable | 4)Grid switchable
10-1 00kHz/9-50kHz | 10-1 00kHz/9-50kHz
7/37
101/21
11/31
65,81 MHz
87,5 MHz
87,5 MHz
87,5 MHz
87,5 MHz
FM/MW-stereo | FM/MW-stereo
13/33
/06/26
76 MHz
87,5 MHz
108 MHz
108 MHz
108 MHz
108 MHz
108 MHz
108 MHz
{107,75 MHz (cH 3)
| 6 ~~] 1494kHz =| 1602kHz | 1500kHz | 1500/1494 kHz|1500/1494 kHz|
1494 kHz
531 kHz
a
|
fan
pees
AO =
io | sare [are [are [J
a
table 2
80MHz
Focus Error
Triggered when the focus could not be found within a certain time when starting up
the CD or when the focus is lost for a certain time during playing the CD.
Subcode Error
No subcode could have been read, even not after retrying 10 times to restart the PLL
and jumping 10 tracks. When this happens the servo is stopped and restarted (as if
the user would have pressed STOP and then PLAY immediately) to recover.
Out of lead-in during reading TOC
Triggered when during reading the TOC the lead-in (track no. 0) is left.
This can be caused by a misaligned inner-switch or by a disc with a mispositioned lead-in.
E1011
Slide error
Generated when the inner-switch did not open within a certain time when the pick up is
moved from the inner position outside.
Fatal slide error
Generated when the inner-switch did not close within a certain time when the pick up is
F
moved inside. Inner-switch or slide motor problems.
za
Turntable motor error
Generated when the CD did not reach 75% of speed during startup within a certain time.
Discmotor problem.
Too less offtracks. Triggered when the servo processor counts too less tracks in a defined
time during JUMPS. This can be caused by a disturbed HF-signal (the tracks cannot be
recognized exactly) or slide motor problems.
E 1020
PLL lock error
When the PLL did not lock after 10 retries then this warning message is generated and
the servo is stopped and restarted (as if the user would have pressed STOP and then
PLAY immediately) to recover.
-
Ns
dated
table 3
—
set continues operation, message remains on the display until next error occurs
or any key is pressed.
(If the set does not function after 10 retries Warning changes to Fatal Error)
Error type:
W = Warning
F=Fatal Error
-—
set stops operation, message remains on the display.
(The set can only be operated again via a reset)
serviest JEWEL digital, 190496
CS 48 887
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