CX-JD33, CX-JD55, JAX-D33, JAX-D55 - Sony Audio Service Manual (repair manual). Page 21

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The Test Mode allows you to make diagnosis and adjustment easily
using the remote commander and monitor TV. The instructions,
diagnostic results, etc. are given on the on-screen display (OSD).

1. Press the ?/1 button to turn the power on.
2. Select the function “DVD”.
3. Press the ?/1 button to turn the power off.
4. Press two buttons of x and Z  for more than 1 second si-

multaneously, turn the [VOLUME] knob clockwise.

5. It displays “SERVICE IN”  on the fluorescent indicator tube,

and displays the Test Mode Menu on the monitor screen as
follows. (At the bottom of the menu screen, the model name
and revision number are displayed)

6. To execute each function, select the desired menu and press

its number on the remote commander.

7. To release from test mode, press the ?/1 button and turn the

power off.

The same contents as board detail check by serial interface can be
checked from the remote commander operation.
On the Test Mode Menu screen, press [10/0]  key on the remote
commander, and the following Check Menu will be displayed.

Quit the Syscon Diagnosis and return to the Test Mode Menu.

This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judgment
through a visual check to the result, the following screen is displayed
for the key entry.

•   Example display

For the ROM Check, the check sum calculated by the Syscon is
output, and therefore you must compare it with the specified value
for confirmation.
Following the message, press the  > button to go to the next
item, or press the  . button to repeat the same operation again.
To quit the diagnosis and return to Check Menu screen, press the
[RETURN] key on the remote commander to display Check Menu.

•  Error occurred
If an error occurred, the diagnosis is suspended and error is displayed.
Press the [RETURN]  key on the remote commander to quit the
diagnosis, or press the . button to repeat the same check where
an error occurred, or press the > button to continue the check
from the item next to faulty item.

Selecting 2 and subsequent items calls the submenu screen of each
item. And selecting 2 and subsequent items executes respective
menus and outputs the results.
For the contents of each submenu, see “Check Items List” as below.

0-2.   Version

0-2-1.   All
0-2-2.   Revision
0-2-3.   ROM Check Sum
0-2-4.   Model Type
0-2-5.   Region

0-3.   EEPROM Check

0-3-1.   Sampling Check
0-3-2.   Detail Check

0-4.   GP I/O Check
0-5.   SD Bus Check
0-6.   Video Check
0-7.   Audio Check

     ### Syscon Diagnosis ###

Check Menu

0. Quit

1. All

2. Version

3. EEPROM

4. GPIO

5. SD Bus

6. Video

    ### Syscon Diagnosis ###

Diag All Check

 No.2 Version

 2-2. Version

ROM Reversion = X.XX

Press NEXT Key to Continue

Press PREV Key to Repeat

  Test Mode Menu

0. Syscon Diagnosis

1. Drive Auto Adjustment

2. Drive Manual Operation

3. Mecha Aging

4. Emergency History

5. Mecha Error History

6. Version Information

7. Video Level Adjustment

     Exit: POWER Key

Model    :JAX-Dxxxx

Revision :x.xx