Sony NV-U74, Service Manual

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NV-U74
12
6. NOTE OF CHECKING THE TEST MODE
Program data for test mode and special USB cable for test mode is
necessary to con
fi rm the test mode.
Con fi rm the method of obtaining the program data for test mode to
each service headquarters.
Use the Part No. J-2502-111-1 for special USB cable for test
mode.
Test mode software will be updated according factory request.
7. OUTLINE OF THE TEST MODE
Necessary following function can be used by service by executing
the test mode.
1. Version display (Ver.)
2. Shipment setting (Ship)
3. Diagnosis function (Diag)
4. LCD/touch panel test (LCD)
5. Audio test (Audio)
6. GPS test (GPS)
7. Cradle test (Cradle)
8. Log display (Log)
9. Firmware update (FWUpdate) (Not used in servicing)
10. Movi data copy (Disk) (Not used in servicing)
8. SETTING THE TEST MODE
Procedure:
1. Insert the Memory Stick Duo in which program fi le for test
mode is written in the main unit and connect the special USB
cable to the main unit
2. Press the [RESET] button, then while touching the upper right
corner of the main unit screen and press the [
?
/
1
] button.
3. After starting the test mode, Memory Stick Duo can be taken
out and special USB cable can be disconnected.
When test mode is set fi rst, “10-4-4. Touch panel (2. Start Calibra-
tion)” is performed.
Refer to “10-4-4. Touch panel (2. Start Calibration)” for details.
9. RELEASING THE TEST MODE
Press the [RESET] button and turn off the power.
10. OPERATION OF THE TEST MODE
Test mode is operated by touching the screen.
10-1. Version Display (Ver.)
10-1-1. S/N
Serial number of the main unit displayed usually. When the se-
rial number is not being written, it is displayed as “0x16FFFFFF
16777215”.
10-1-2. FW
The version of the software (BootStrap, DIAG, bootloader, kernel-
rec and initrd.rec) written in the NOR
fl ash memory is displayed.
10-1-3. Map ver
This mode is not displayed in this set. (It is always displayed as
“MapVersion.txt not Found”)
Please con
fi rm the version by “Service Mode” - “Map Version”
when it usually starts when you con fi rm the map version.
10-2. Shipment Setting (Ship)
It makes it to the one when the setting is shipped. Please do this
mode when you exchange the main board.
Note: Never use it because user information will be deleted when Factory
Reset is executed by touching the “Start” button of Factory Reset.
10-3. Diagnosis Function (Diag)
10-3-1. Diag
1. NOR
When “NOR” on the screen is selected, and the “EXEC” button is
touched, NOR
fl ash memory (IC1504) is diagnosed.
When “OK” is displayed in the fi rst line, NOR fl ash memory
(IC1504) is normal.
When “NG!” is displayed in the
fi rst line, NOR fl ash memory
(IC1504) is abnormal.
But NOR
fl ash data is updated, it always show “NG”.
Please ignore “NG” message.