Panasonic SC-EN37EB / SC-EN37EG Service Manual ▷ View online
7.3. Connection
13
SC-EN37EB / SC-EN37EG
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 mode 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
[
]
[4], [7]
To enter into doctor mode for various item
checking.
checking.
(Refer to the section 8.2 for more
information.)
information.)
Mode
Remote control unit buttons
Application
Note
Doctor Mode
[DIMMER]
FL ALL Segment inspection
(Refer to the section 8.2 for more
information.)
information.)
[7], [8], [9]
Forced VOL setting
(Refer to the section 8.2 for more
information.)
information.)
[
], [1], [1]
CD Loading Test
(Refer to the section 8.2 for more
information.)
information.)
[
], [1], [2]
CD Traverse Test
(Refer to the section 8.2 for more
information.)
information.)
[
], [1], [3]
CD Combination Test
(Refer to the section 8.2 for more
information.)
information.)
[
], [1], [4]
CD Auto Adjustment Display
(Refer to the section 8.2 for more
information.)
information.)
[SLEEP]
Cold Start setting
(Refer to the section 8.2 for more
information.)
information.)
8.2. Service Mode Table 1
Below is the various special modes for checking:-
Item
FL Display
Key Operation
Mode Name
Description
Front Key
Self-Diagnostic
Mode
Mode
To enter into self diagnostic checking
for main unit.
for main unit.
1.
Select [CD] for CD mode (Ensure
no CD inserted.)
no CD inserted.)
2.
Press and hold [
] button for 2
seconds follow by [FF]
To exit, press [
] button on
main unit or remote control.
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SC-EN37EB / SC-EN37EG
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.
Note: The micro-processor version as
shown is an example. It will be revise
when there is an updates.
FL Display sequence
Display 1
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.
FL Display sequence
Display 1
→ 2
DIsplay 1
Checksum (Condition 1)
When EEPROM IC detected and has ROM
correction.
When EEPROM IC detected and has ROM
correction.
Checksum (Condition 2)
When EEPROM IC is detected and there is
no ROM correction.
When EEPROM IC is detected and there is
no ROM correction.
Checksum (Condition 3)
When EEPROM IC is detected and has ROM
correction but not working properly.
When EEPROM IC is detected and has ROM
correction but not working properly.
Display 2
The Check Sum of EEPROM and firmware
version will be display for 1 sec.
* ROM correction
** Firmware version No:
version will be display for 1 sec.
* ROM correction
** Firmware version No:
In any mode:
1.
1.
Press [
] button on main unit
follow by [4] and [7] on remote
control.
control.
To exit, press [
] button on
main unit or remote control.
FL Display Test
To check the FL segments display (All
segments will light up)
segments will light up)
In doctor mode:
1.
1.
Press [DIMMER] button on remote
control.
control.
To exit, press [
] button on
main unit or remote control.
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SC-EN37EB / SC-EN37EG
Item
FL Display
Key Operation
Mode Name
Description
Front Key
Volume Setting
Mode
Mode
To check for the volume setting of the
main unit. The volume will be
automatically set to its respective
level (in dB). During the mode,
trebble/bass/EQ will be set to “0” dB
& OFF.
main unit. The volume will be
automatically set to its respective
level (in dB). During the mode,
trebble/bass/EQ will be set to “0” dB
& OFF.
In doctor mode:
1. Press [7] button on remote control.
1. Press [7] button on remote control.
2. Press [8] button on remote control.
3. Press [7] button on remote control.
To exit, press [
To exit, press [
] button on
main unit or remote control.
CD Loading Test
Mode
Mode
To determine the 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.
Loading unit.
To check for the Open/Close
operation for the CD loading unit. It
fails when there is abnormality in
opening or closing.
The counter will increment by 1 until reach
99999999
↓
In doctor mode:
1.
1.
Press [
], [1] & [1] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
CD Traverse Unit
Test Mode
Test Mode
To check for the traverse unit
operation. In this mode, the first & last
track is access & read. (TOC). It fails
when TOC is not completed by IOS or
the traverse is out of focus.
operation. In this mode, the first & last
track is access & read. (TOC). It fails
when TOC is not completed by IOS or
the traverse is out of focus.
The counter will increment by 1 until reach
99999999
↓
In doctor mode:
1.
1.
Press [
], [1] & [2] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
CD Combination
Test Mode
Test Mode
A combination of CD loading &
traverse unit test.
traverse unit test.
The counter will increment by 1 until reach
99999999
↓
In doctor mode:
1.
1.
Press [
], [1] & [3] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
CD Auto
Adjustment
Display
Adjustment
Display
To display result of self adjustment for
CD.
For more information, please refer to
Section 8.2.1.
CD.
For more information, please refer to
Section 8.2.1.
The [NO DISC] display will appear after 3s,
In doctor mode:
1.
1.
Press [
], [1] & [4] button on
remote control.
To cancel, press [0] button remote
control.
To exit, press [
control.
To exit, press [
] button on
main unit or remote control.
Cold Start
To activate cold start upon next AC
power up.
power up.
↓
In doctor mode:
1.
1.
Press [SLEEP] button on remote
control.
control.
To exit, press [
] button on
main unit or remote control.
8.2.1. CD Self-Adjustment (AJST) Result Display
Purpose: To display result of self-adjustment for CD.
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SC-EN37EB / SC-EN37EG
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