Panasonic SV-SD750VGC / SV-SD750VGH / SV-SD750VGK / SV-SD750VGN / SV-SD750VSG Service Manual ▷ View online
9
5.5.
SERVICE 3
Battery Capacity Display and
Control Button Operation
Check
Battery Capacity Display and
Control Button Operation
Check
[ Content ]
Displays the rechargeable battery voltage, and the KEY IN volt-
age AD conversion values (hexadecimal) at the [FWD-Skip],
[REW-Skip], [MODE], [MARK], [+], [-] key operations.
The AD conversion value is used for button operation checks
and for the remaining battery capacity display.
[ Operating procedure ]
Displays the rechargeable battery voltage, and the KEY IN volt-
age AD conversion values (hexadecimal) at the [FWD-Skip],
[REW-Skip], [MODE], [MARK], [+], [-] key operations.
The AD conversion value is used for button operation checks
and for the remaining battery capacity display.
[ Operating procedure ]
1. Select [ SERVICE 3 ] on the service mode menu and then
press the [PLAY/STOP] button, then displayed the battery
capacity display and control button operation check
screen.
capacity display and control button operation check
screen.
2. Turn the power OFF to complete the procedure.
5.5.1.
BATT (Remaining Battery Capacity
AD Value)
AD Value)
Check the BATT's AD conversion value and the remaining
battery capacity display.
The BATT display (hexadecimal) indicates the voltage of the
internal rechargeable battery.
The internal rechargeable battery voltage =
2.9 (V) x [BATT display content] / 1024.
[Example]
When the BATT value is "1CC" ("460" as decimal value):
Internal rechargeable battery voltage = 2.9 x 460 / 1024 =
1.3027....= 1.303 (V)
battery capacity display.
The BATT display (hexadecimal) indicates the voltage of the
internal rechargeable battery.
The internal rechargeable battery voltage =
2.9 (V) x [BATT display content] / 1024.
[Example]
When the BATT value is "1CC" ("460" as decimal value):
Internal rechargeable battery voltage = 2.9 x 460 / 1024 =
1.3027....= 1.303 (V)
The value of BATT2: is not used in this mode.
5.5.2.
KEYIN (Control Button’s AD Value)
Displays the AD value judgment for the button operation.
Press each of the [FWD-Skip], [REW-Skip], [MODE], [MARK],
[+], [-] buttons and verify the changes in the KEYIN's AD
conversion value.
Press each of the [FWD-Skip], [REW-Skip], [MODE], [MARK],
[+], [-] buttons and verify the changes in the KEYIN's AD
conversion value.
Judgment:
If the AD conversion value displayed at the button operation
is outside the range shown in the table, this may indicate a
hardware malfunction.
is outside the range shown in the table, this may indicate a
hardware malfunction.
Remaining Battery Voltage
Display
AD Conversion Value
3 battery marks
1C3 < Batt
2 battery marks
1B3 < Batt < or = 1C3
1 battery mark
19B < Batt < or = 1B3
Blinking battery mark
172 < Batt < or = 19B
Low battery voltage
Batt < or = 172
Button Operation
AD Conversion Value
FWD-Skip
000 ~ 055
REW-Skip
056 ~ 0FF
MARK
100 ~ 1AA
+
1AB ~ 255
-
256 ~ 2FF
MODE
300 ~ 3AA
No key input
3AB ~ 3FF
10
5.6.
SERVICE 4
Model and Region Display
Model and Region Display
[ Content ]
Displays the model, region and firmware version information.
This content cannot be changed.
[ Operating procedure ]
Displays the model, region and firmware version information.
This content cannot be changed.
[ Operating procedure ]
1. Select [ SERVICE 4 ] on the service mode menu and then
press the [PLAY/STOP] button, then displayed the model
and region information.
and region information.
• Content of display
- The mark at the right of “MODEL INFO” is the
following information:
#.....Model and region setting in the service mode.
* .....Model and region setting in the factory setting.
#.....Model and region setting in the service mode.
* .....Model and region setting in the factory setting.
- 2nd line: Model and firmware information.
- 4th line: Region information.
- 4th line: Region information.
It differs according to the country.
2. Turn the power OFF to complete the procedure.
5.7.
SERVICE 8
Card Recognition Operation
Check
Card Recognition Operation
Check
[ Content ]
Verifies that the SD-card (where audio file is saved) can be
recognized.
[ Operating procedure ]
Verifies that the SD-card (where audio file is saved) can be
recognized.
[ Operating procedure ]
1. Select [ SERVICE 8 ] on the service mode menu and then
press the [PLAY/STOP] button, then displayed the card’s
detection count screen.
detection count screen.
2. Remove the service mode SD-card, then insert it again.
• The count value increases by 1 (1 card insertion) after
the microcomputer reads the default data from the SD-
card.
card.
3. Open the battery cover to complete the procedure.
11
5.8.
SERVICE 9
Audio Playback Check
Audio Playback Check
[ Content ]
Performs repeat playbacks, checking for audio playback errors.
[ Operating procedure ]
Performs repeat playbacks, checking for audio playback errors.
[ Operating procedure ]
1. Select [ SERVICE 9 ] on the service mode menu and then
press the [PLAY/STOP] button, then displayed the audio
playback error check screen.
playback error check screen.
2. Playback begins and the repeat count (number of returns
to first song) displays on screen.
• Content of display
1st line: Test name
2nd line: Repeat count
4th line: Track number and elapsed playback time
2nd line: Repeat count
4th line: Track number and elapsed playback time
3. Repeat playbacks continue until a playback error occurs.
Therefore, if no error has occurred after approximately 10
playbacks.
playbacks.
4. Open the battery cover to complete the procedure.
When the error occurs:
If a playback error occurs, playback is stopped, and an error
code displays on screen.
code displays on screen.
• Content of display
1st line: Test name
2nd line: Repeat count
3rd line: Error code
4th line: Track number and elapsed playback time
2nd line: Repeat count
3rd line: Error code
4th line: Track number and elapsed playback time
For error code details, refer to section 5.14 (Error Code Table).
Open the battery cover to complete the procedure.
Open the battery cover to complete the procedure.
5.9.
SERVICE 10
Voice Playback Check
Voice Playback Check
[ Content ]
Performs repeat playbacks, checking for voice playback errors.
[ Operating procedure ]
Performs repeat playbacks, checking for voice playback errors.
[ Operating procedure ]
1. Select [ SERVICE 10 ] on the service mode menu and
then press the [PLAY/STOP] button, then displayed the
voice playback error check screen.
voice playback error check screen.
2. Playback begins and the repeat count (number of returns
to first voice) displays on screen.
• Content of display
1st line: Test name
2nd line: Repeat count
4th line: Track number and elapsed playback time
2nd line: Repeat count
4th line: Track number and elapsed playback time
3. Repeat playbacks continue until a playback error occurs.
Therefore, if no error has occurred after approximately 10
playbacks.
playbacks.
4. Open the battery cover to complete the procedure.
When the error occurs:
If a playback error occurs, playback is stopped, and an error
code displays on screen.
code displays on screen.
• Content of display
1st line: Test name
2nd line: Repeat count
3rd line: Error code
4th line: Track number and elapsed playback time
2nd line: Repeat count
3rd line: Error code
4th line: Track number and elapsed playback time
For error code details, refer to section 5.14 (Error Code Table).
Open the battery cover to complete the procedure.
Open the battery cover to complete the procedure.
12
5.10. SERVICE 11
Voice Recording Check
[ Content ]
Repeats the "SD-card formatting, full recording (recording until
card's capacity is completely used), and playbacks" procedure,
and checks for voice recording and playback errors.
[ Operating procedure ]
Repeats the "SD-card formatting, full recording (recording until
card's capacity is completely used), and playbacks" procedure,
and checks for voice recording and playback errors.
[ Operating procedure ]
1. Entering The Service Mode
Caution:
The SD-card will be formatted at the this mode.
Therefore, be sure to remove the service mode
SD-card from the audio player.
Therefore, be sure to remove the service mode
SD-card from the audio player.
2. Insert the recording check SD-card into the audio player.
3. Select [ SERVICE 11 ] on the service mode menu and
3. Select [ SERVICE 11 ] on the service mode menu and
then press the [PLAY/STOP] button, then displayed the
voice recording error check screen.
voice recording error check screen.
4. The "repeated SD-card formatting, full recording
(recording until card's capacity is completely used),
and playback" procedure begins and the repeat count
displays on screen.
and playback" procedure begins and the repeat count
displays on screen.
• When voice recording
• Content of display
1st line: Test name
2nd line: Repeat count
4th line: Elapsed recording time
2nd line: Repeat count
4th line: Elapsed recording time
• When voice playback
• Content of display
1st line: Test name
2nd line: Repeat count
4th line: Track number and elapsed playback time
2nd line: Repeat count
4th line: Track number and elapsed playback time
5. The above procedure is repeated until a recording error
occurs. Therefore, if no recording error has occurred after
approximately 2 repeats.
approximately 2 repeats.
6. Open the battery cover to complete the procedure.
When the error occurs:
If a recording or a playback error occurs, operation is
stopped, and an error code displays on screen.
stopped, and an error code displays on screen.
• When voice recording
• Content of display
1st line: Test name
2nd line: Repeat count
3rd line: Error code
4th line: Elapsed recording time
2nd line: Repeat count
3rd line: Error code
4th line: Elapsed recording time
• When voice playback
• Content of display
1st line: Test name
2nd line: Repeat count
3rd line: Error code
4th line: Track number and elapsed playback time
2nd line: Repeat count
3rd line: Error code
4th line: Track number and elapsed playback time
For error code details, refer to section 5.14 (Error Code Table).
Open the battery cover to complete the procedure.
Open the battery cover to complete the procedure.
Click on the first or last page to see other SV-SD750VGC / SV-SD750VGH / SV-SD750VGK / SV-SD750VGN / SV-SD750VSG service manuals if exist.