SV-SD770VGC, SV-SD770VGH, SV-SD770VGN, SV-SD770VSG, SV-SD710EB, SV-SD710EG - Panasonic Audio Service Manual (repair manual). Page 9

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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.
* 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.
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)
Returns to standard 
screen.
[+], [-], 
[PLAY/STOP]
Turn power OFF, or 
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.
DEVICEKEY NO
Device key 
serial number 
display.
Service mode is 
executed.
None
Open the battery 
cover.
Verifies that the device key is written without 
error to the main PCB's IC1 (SD system LSI).
AD INFO
Control button 
operation 
checks and 
remaining 
battery capacity 
display check.
Service mode is 
executed.
[FWD-Skip], 
[REW-Skip], 
[MODE], 
[SELECT],
[MARK], [+], [-] 
(AD value 
measurement)
Open the battery 
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.
MODEL INFO
Model and 
region display.
Service mode is 
executed.
None
Open the battery 
cover.
Displays the model and region information.
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.
Service mode is 
executed.
None
Open the battery 
cover.
Verifies that the SD-card (where audio file is
saved) 
can be recognized.
AUDIO PLAY
Checks the 
audio playback 
operation.
Service mode is 
executed.
None
Open the battery 
cover.
Performs repeat playback and checks for audio 
playback errors.
VOICE PLAY
*SV-SD770V
 only
Checks the 
voice playback 
operation.
Service mode is 
executed.
None
Open the battery 
cover.
Performs repeat playback and checks for voice 
playback errors.
VOICE REC
*SV-SD770V
 only
Checks the 
voice recording 
operation.
Service mode is 
executed.
None
Open the battery 
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.
FM REC
*SV-SD770V
 only
Checks the FM 
recording 
operation.
After tuner tuning, 
Service mode is 
executed.
[FWD-Skip], 
[REW-Skip], 
[PLAY/STOP]
Open the battery 
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.
MODEL
Model and 
region setting.
Model and region 
setting.
[+], [-], 
[PLAY/STOP]
After completing 
the setting, power 
is automatically 
turned OFF.
Model and region information are rewritten, and it 
makes it to the default corresponding to them.
VERSION
Internal version
display.
Service mode is 
executed.
None
Press any key or 
leaving for 10 
seconds.
Displays the internal version.
WAKEUP COUNT Use history
display.
Service mode is 
executed.
None
Open the battery 
cover.
Displays the use history memorized in FLASH.
(Normally power off history)
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