Panasonic SA-NS55DBEB Service Manual ▷ View online
7.3. Disc Information
13
SA-NS55DBEB
8 Self diagnosis and special mode setting
This unit is equipped with features of self-diagnostic & special mode setting for checking the functions & reliability.
8.1. Service Mode Summary Table
The service modes can be activated by pressing various button combination on the main unit and remote control unit.Below is the
summary for the various modes for checking:
summary for the various modes for checking:
Player buttons
Remote control unit buttons
Application
Note
[STOP]
[4], [7]
Entering into Doctor Mode
(Refer to the section 8.2. for more information.)
Player buttons
Remote control unit buttons
Application
Note
In Doctor Mode
[DIMMER]
FL ALL Segment inspection
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[7]
Volume 50 setting check
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[8]
Volume 29 setting check
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[9]
Volume 0 setting check
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[
], [1], [1]
CD Reliability Test (Loading)
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[
], [1], [2]
CD Reliability Test (Traverse)
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[
], [1], [3]
CD Reliability Test (Combination)
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[
], [1], [4]
CD Auto Adjustment Display
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
[SLEEP]
Cold Start Setting
(Refer to the section 8.2. service mode
Table 1 & 2 for more information.)
Table 1 & 2 for more information.)
8.2. Service Mode Table
Below is the various special modes for checking:-
8.2.1. Service mode Table 1
Item
FL Display
Key Operation
Mode Name
Description
Front Key
Self -Diagnostic
Mode
Mode
To enter into self
diagnostic checking for
main unit.
diagnostic checking for
main unit.
1.
Select [
] for CD mode (Ensure no
CD inserted).
2.
Press and hold [
]button for 2
seconds follow by [
].
To exit Doctor Mode, press
button on
main unit or remote control.
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SA-NS55DBEB
Item
FL Display
Key Operation
Mode Name
Description
Front Key
Doctor Mode
To enter into Doctor
Mode for checking of
various items and
displaying EEPROM and
firmware version.
Mode for checking of
various items and
displaying EEPROM and
firmware version.
Note: The micro-
processor version as
shown is an example. It
will be revise when there
is an updates.
processor version as
shown is an example. It
will be revise when there
is an updates.
FL display sequence
Display 1
Display 1
→ 2
(Display 1)
Checksum : (Condition 1)
(a) If there is NO EEPROM header string
OR
(b) If there is no EEPROM ( no data is
received by micro-processor) [NO] is
displayed.
OR
(b) If there is no EEPROM ( no data is
received by micro-processor) [NO] is
displayed.
Checksum : (Condition 2)
If the version of the EEPROM does not
match or not working properly [NG] is
display.
match or not working properly [NG] is
display.
Checksum : (Condition 3)
If the EEPROM version matches, checksum
[YYYY] is displayed.
[YYYY] is displayed.
(Display 2)
The Check Sum of EEPROM and firmware
version will be display for 2 sec.
version will be display for 2 sec.
In any mode:
1.
1.
Press [
] button on main unit follow
by [4] and [7] on remote control.
To exit Doctor Mode, press
button on
main unit or remote control.
8.2.2. Service mode Table 2
Item
FL Display
Key Operation
Mode Name
Description
Front Key
FL Display Test
To check the FL
segments display (All
segments will light up)
segments display (All
segments will light up)
In doctor mode:
1.
1.
Press [DIMMER] button on remote control.
To cancel, press [0] button on remote control.
To exit Doctor Mode, press
To exit Doctor Mode, press
button on
main unit or remote control.
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SA-NS55DBEB
Item
FL Display
Key Operation
Mode Name
Description
Front Key
Volume Setting
Check for the volume
setting of the main unit.
The volume will be
automatically set to its
respective level (in dB)
during the mode,
treble/bass/EQ will be set
to ‘0’dB & OFF.
setting of the main unit.
The volume will be
automatically set to its
respective level (in dB)
during the mode,
treble/bass/EQ will be set
to ‘0’dB & OFF.
Display 1
In doctor mode:
1. Press [7] button on remote control.
To exit Doctor Mode, press
1. Press [7] button on remote control.
To exit Doctor Mode, press
button on
main unit or remote control.
Display 2
In doctor mode:
2. Press [8] button on remote control.
To exit Doctor Mode, press
2. Press [8] button on remote control.
To exit Doctor Mode, press
button on
main unit or remote control.
Display 3
In doctor mode:
3. Press [9] button on remote control.
To exit Doctor Mode, press
3. Press [9] button on remote control.
To exit Doctor Mode, press
button on
main unit or remote control.
CD Reliability
Test (Loading)
Test (Loading)
To determine the
reliability of CD Loading
Unit.
reliability of CD Loading
Unit.
To check for the open /
close operation for the
CD loading unit. It fails
when there is
abnormality in opening or
closing.
close operation for the
CD loading unit. It fails
when there is
abnormality in opening or
closing.
In doctor mode:
1.
1.
Press [
], [1], [1] button on remote
control.
To cancel, press [0] button on remote control.
To exit Doctor Mode, press
To exit Doctor Mode, press
button on
main unit or remote control.
CD Reliability
Test (Traverse)
Test (Traverse)
To check for the traverse
unit operation, In this
made, the first & lost
track is access & read
(TOC). It fails when TOC
is not completed by IDS
or the traverse is out of
focus.
unit operation, In this
made, the first & lost
track is access & read
(TOC). It fails when TOC
is not completed by IDS
or the traverse is out of
focus.
In doctor mode:
1.
1.
Press [
], [1], [2] button on remote
control.
To cancel, press [0] button on remote control.
To exit Doctor Mode, press
To exit Doctor Mode, press
button on
main unit or remote control.
CD Reliability
Test
(Combination)
Test
(Combination)
A combination of CD
loading & Traverse unit
test.
loading & Traverse unit
test.
In doctor mode:
1.
1.
Press [
], [1], [3] button on remote
control.
To cancel, press [0] button on remote control.
To exit Doctor Mode, press
To exit Doctor Mode, press
button on
main unit or remote control.
CD Auto
Adjustment
Display
Adjustment
Display
To display result of self-
adjustment for CD.
adjustment for CD.
In doctor mode:
1.
1.
Press [
], [1], [4] button on remote
control.
To exit Doctor Mode, press
button on
main unit or remote control.
Cold Start
To activate cold start
ipon next AC power up.
ipon next AC power up.
In doctor mode:
1.
1.
Press [SLEEP] button on remote control.
To exit Doctor Mode, press
button on
main unit or remote control.
8.2.3. CD Self-Adjustment (AJST) Result Display
Purpose : To check the result of self-adjustment for CD.
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SA-NS55DBEB
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