Read Sony HCD-N555AVK / LBT-N555AVK Service Manual online
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SERVICING NOTE
NOTES ON HANDING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-up
block. Therefore, when checking the laser diode emission, observe
from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-up
block. Therefore, when checking the laser diode emission, observe
from more than 30 cm away from the objective lens.
FL Display Tube, LED All Lit and Key Check mode
When the TUNER/BAND , DISPLAY/DEMO , and FILE 2 but-
tons are pressed simultaneously, the FL display tube and LEDs will
all light up. Press any button to enter the key check mode.
When the key check mode is entered, the FL display tube displays
“K 1 J0 V0”. Each time a button is pressed, the counter increases in
the following order, K 2
tons are pressed simultaneously, the FL display tube and LEDs will
all light up. Press any button to enter the key check mode.
When the key check mode is entered, the FL display tube displays
“K 1 J0 V0”. Each time a button is pressed, the counter increases in
the following order, K 2
n K 3 n K 4.
If buttons already pressed once are pressed again, the counter will
not increase. When the VOLUME knob is rotated in the + direction,
the count increases in the following order.
V1
not increase. When the VOLUME knob is rotated in the + direction,
the count increases in the following order.
V1
n V2 n V3.
When rotated in the – direction, it decreases in the following order.
V0
V0
n V9 n V8.
When the AMS dial is rotated in the clockwise direction, the count
increases in the following order.
J1
increases in the following order.
J1
n J2 n J3.
When rotated in the counterclockwise direction, it decreases in the
following order.
J0
following order.
J0
n J9 n J8.
To exit form the test mode, press the TUNER/BAND , DISPLAY/
DEMO , FILE 2 buttons simultaneously again.
DEMO , FILE 2 buttons simultaneously again.
How to switch LD/VIDEO which is the function name of
external input
external input
The LD/VIDEO display which is the function name of external input
is set to "LD" on shipment. The display can be changed as below:
When the power is turned off, pressing the POWER and FUNC-
TION buttons simultaneously, "VIDEO" is displayed on the FL dis-
play tube. In this operation, the function name of external input is
switched to "VIDEO". Turn the power off in the same way, pressing
the POWER and FUNCTION buttons simultaneously again, "LD"
is displayed on the FL display tube. In this operation, the function
name of external input is switched to "LD". The function names of
external input can be changed at will by the way of the above.
is set to "LD" on shipment. The display can be changed as below:
When the power is turned off, pressing the POWER and FUNC-
TION buttons simultaneously, "VIDEO" is displayed on the FL dis-
play tube. In this operation, the function name of external input is
switched to "VIDEO". Turn the power off in the same way, pressing
the POWER and FUNCTION buttons simultaneously again, "LD"
is displayed on the FL display tube. In this operation, the function
name of external input is switched to "LD". The function names of
external input can be changed at will by the way of the above.
How to reset all
Pressing the TUNER/BAND , DISPLAY/DEMO and FILE 3 buttons
simultaneously , all are reset and returned to as when the unit was
shipped.
simultaneously , all are reset and returned to as when the unit was
shipped.
Switching the channel step 9 kHz/10 kHz
Press ENTER/NEXT button and POWER button simultaneously
to switch the AM channel step 9 kHz and 10 kHz. Be sure not to
change with carelessness.
to switch the AM channel step 9 kHz and 10 kHz. Be sure not to
change with carelessness.
MODEL
E, Indonesian model
Saudi Arabia model
Singapore (SP2) model
Singapore (SP4) model
Malaysia model
Saudi Arabia model
Singapore (SP2) model
Singapore (SP4) model
Malaysia model
PARTS No.
4-978-194-5
π
4-978-194-6
π
4-978-194-7
π
4-978-194-8
π
4-978-194-9
π
Parts No.
NOTE:
The difference between SP2 and SP4 is the back panel only.
MODEL IDENTIFICATION
– BACK PANEL –
123456789
123456789
123456789
9
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