Panasonic SV-SD770VGC / SV-SD770VGH / SV-SD770VGN / SV-SD770VSG / SV-SD710EB / SV-SD710EG Service Manual ▷ View online
9
5.2.1.
Service Mode Function & Canceling The Service Mode
* About service mode of SV-SD710
SV-SD710 cannot recording and playback of voice and FM tuner.
Therefore, the item of [VOICE PLAY], [VOICE REC] and [FM REC] are cannot used.
Therefore, the item of [VOICE PLAY], [VOICE REC] and [FM REC] are cannot used.
* Auto power OFF in operation check modes
Although the audio player is equipped with an auto power OFF function, this function is disabled when executing all operation
check mode menu functions except LCD SETTING.
An automatic power OFF which is unrelated to the auto power OFF function occurs at the completion of MODEL.
check mode menu functions except LCD SETTING.
An automatic power OFF which is unrelated to the auto power OFF function occurs at the completion of MODEL.
Menu Item
Service Mode
Description
Operation After
Menu Selection
Buttons Used
Canceling The
Service Mode
Service Mode Function
LCD SETTING
Switches the
LCD display
mode.
(Backlight
always turns on)
LCD display
mode.
(Backlight
always turns on)
Returns to standard
screen.
screen.
[+], [-],
[PLAY/STOP]
[PLAY/STOP]
Turn power OFF, or
switch back to LCD
display mode.
switch back to LCD
display mode.
Because the display content must be checked
during service mode execution, the backlight is
always ON at this menu.
during service mode execution, the backlight is
always ON at this menu.
DEVICEKEY NO
Device key
serial number
display.
serial number
display.
Service mode is
executed.
executed.
None
Open the battery
cover.
cover.
Verifies that the device key is written without
error to the main PCB's IC1 (SD system LSI).
error to the main PCB's IC1 (SD system LSI).
AD INFO
Control button
operation
checks and
remaining
battery capacity
display check.
operation
checks and
remaining
battery capacity
display check.
Service mode is
executed.
executed.
[FWD-Skip],
[REW-Skip],
[MODE],
[SELECT],
[MARK], [+], [-]
(AD value
measurement)
[REW-Skip],
[MODE],
[SELECT],
[MARK], [+], [-]
(AD value
measurement)
Open the battery
cover.
cover.
Displays the rechargeable battery voltage, and
the KEY IN voltage's AD conversion values
(hexadecimal) at the [FWD-Skip], [REW-Skip],
[MODE],[SELECT],[MARK], [+], [-] key
operations.
The AD conversion value is used for button
operation checks and for the remaining battery
capacity display.
the KEY IN voltage's AD conversion values
(hexadecimal) at the [FWD-Skip], [REW-Skip],
[MODE],[SELECT],[MARK], [+], [-] key
operations.
The AD conversion value is used for button
operation checks and for the remaining battery
capacity display.
MODEL INFO
Model and
region display.
region display.
Service mode is
executed.
executed.
None
Open the battery
cover.
cover.
Displays the model and region information.
This content cannot be changed.
This content cannot be changed.
INITIALIZE
Do not use this mode.
FLASH READ
Do not use this mode.
FLASH WRITE
Do not use this mode.
CARD IN/OUT
Card
recognition
check.
recognition
check.
Service mode is
executed.
executed.
None
Open the battery
cover.
cover.
Verifies that the SD-card (where audio file is
saved)
can be recognized.
saved)
can be recognized.
AUDIO PLAY
Checks the
audio playback
operation.
audio playback
operation.
Service mode is
executed.
executed.
None
Open the battery
cover.
cover.
Performs repeat playback and checks for audio
playback errors.
playback errors.
VOICE PLAY
*SV-SD770V
only
*SV-SD770V
only
Checks the
voice playback
operation.
voice playback
operation.
Service mode is
executed.
executed.
None
Open the battery
cover.
cover.
Performs repeat playback and checks for voice
playback errors.
playback errors.
VOICE REC
*SV-SD770V
only
*SV-SD770V
only
Checks the
voice recording
operation.
voice recording
operation.
Service mode is
executed.
executed.
None
Open the battery
cover.
cover.
Repeats the "SD-card formatting, full recording
(recording until card's capacity is completely
used), and playback" procedure, and then
checks for voice recording and playback errors.
(recording until card's capacity is completely
used), and playback" procedure, and then
checks for voice recording and playback errors.
FM REC
*SV-SD770V
only
*SV-SD770V
only
Checks the FM
recording
operation.
recording
operation.
After tuner tuning,
Service mode is
executed.
Service mode is
executed.
[FWD-Skip],
[REW-Skip],
[PLAY/STOP]
[REW-Skip],
[PLAY/STOP]
Open the battery
cover.
cover.
Performs "FM radio reception”, repeats the
“SD-card formatting, full recording (recording
until card's capacity is completely used),
recording, and playback" procedure, and then
checks for FM recording and playback errors.
“SD-card formatting, full recording (recording
until card's capacity is completely used),
recording, and playback" procedure, and then
checks for FM recording and playback errors.
MODEL
Model and
region setting.
region setting.
Model and region
setting.
setting.
[+], [-],
[PLAY/STOP]
[PLAY/STOP]
After completing
the setting, power
is automatically
turned OFF.
the setting, power
is automatically
turned OFF.
Model and region information are rewritten, and it
makes it to the default corresponding to them.
makes it to the default corresponding to them.
VERSION
Internal version
display.
display.
Service mode is
executed.
executed.
None
Press any key or
leaving for 10
seconds.
leaving for 10
seconds.
Displays the internal version.
WAKEUP COUNT Use history
display.
Service mode is
executed.
executed.
None
Open the battery
cover.
cover.
Displays the use history memorized in FLASH.
(Normally power off history)
(Normally power off history)
10
5.3.
LCD SETTING
LCD Display Mode Switching
LCD Display Mode Switching
[ Content ]
Because the display content must be checked during service
mode execution, the LCD backlight is always ON at this menu.
[ Operating procedure ]
Because the display content must be checked during service
mode execution, the LCD backlight is always ON at this menu.
[ Operating procedure ]
1. Select [ LCD SETTING ] on the service mode menu and
then press the [PLAY/STOP] button, then displayed the
LCD display mode switching screen.
LCD display mode switching screen.
2. Use the [+] and [-] buttons to select "ON", and then press
the [PLAY/STOP] button to execute display mode switch-
ing.
It returns to the audio mode after executes it.
ing.
It returns to the audio mode after executes it.
NOTE:
Another SERVICE mode should be executed within 1
minute after switching is performed. If the auto power OFF
function is activated, the system returns to the "display ON/
OFF control enabled" mode.
minute after switching is performed. If the auto power OFF
function is activated, the system returns to the "display ON/
OFF control enabled" mode.
5.4.
DEVICEKEY NO
Device Key Serial Number
Display
Device Key Serial Number
Display
[ Content ]
This display is used to verify that the device key is written to the
main PCB's IC1 (SD system LSI) without error.
[ Operating procedure ]
This display is used to verify that the device key is written to the
main PCB's IC1 (SD system LSI) without error.
[ Operating procedure ]
1. Select [ DEVICEKEY NO ] on the service mode menu
and then press the [PLAY/STOP] button, then displayed
the device key serial number information.
the device key serial number information.
Judgment:
If the device key serial number fails to display, there is
a problem with the IC1 (SD system LSI).
a problem with the IC1 (SD system LSI).
2. Open the battery cover to complete the procedure.
11
5.5.
AD INFO
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], [SELECT], [MARK], [+], [-] key opera-
tions.
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], [SELECT], [MARK], [+], [-] key opera-
tions.
The AD conversion value is used for button operation checks
and for the remaining battery capacity display.
[ Operating procedure ]
1. Select [ AD INFO ] on the service mode menu and then
press the [PLAY/STOP] button, then displayed the battery
capacity display screen.
capacity display screen.
5.5.1.
Remaining Battery Capacity AD
Value
Value
Check the BATT's AD conversion value and the remaining
battery capacity display.
battery capacity display.
5.5.2.
Control Button’s AD Value
When battery capacity AD value display, press the [PLAY/
STOP] button at two times, then displayed the control button
operation check screen.
STOP] button at two times, then displayed the control button
operation check screen.
Displays the AD value judgment for the button operation.
Press each of the [FWD-Skip], [REW-Skip], [MODE],
[SELECT], [MARK], [+], [-] buttons and verify the changes in
the AD conversion value.
Press each of the [FWD-Skip], [REW-Skip], [MODE],
[SELECT], [MARK], [+], [-] buttons and verify the changes in
the 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.
Open the battery cover to complete the procedure.
Remaining Battery Voltage
Display
AD Conversion Value
Full battery marks
0C17 ~ 03FF
2 battery marks
01B2 ~ 01C7
1 battery mark
01A0 ~ 01B2
Blinking battery mark
017B ~ 01A0
Low battery detect
0000 ~ 017B
Button Operation
AD Conversion Value
MARK
0000 ~ 0049
MODE
0049 ~ 00DB
REW-Skip
00DB ~ 016D
-
016D ~ 01FF
FWD-Skip
01FF ~ 0292
SELECT
0292 ~ 0324
+
0324 ~ 03B6
No key input
03B6 ~ 03FF
12
5.6.
MODEL INFO
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 [ MODEL INFO ] on the service mode menu and
then press the [PLAY/STOP] button, then displayed the
model and region information.
model and region information.
• Content of display
- 1st line: Model and firmware information.
- 2nd line: Region information.
- 2nd line: Region information.
It differs according to the region.
- The mark at the right of “REGION:xx” 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.
2. Open the battery cover to complete the procedure.
5.7.
CARD IN/OUT
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 [ CARD IN/OUT ] on the service mode menu and
then press the [PLAY/STOP] button, then displayed the
card’s detection count screen.
card’s 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.
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