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Version Information; Video Level Adjustment; If Con Self Diagnostic Function - Sony DVP-LS500 Service Manual

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6-8. VERSION INFORMATION

### Version Infomation ###
IF con.
Ver:x.xxx(xxxx)
Group
xx
SYScon.
Ver:x.xxx(xxxx)
Model
xx
Region
0x
Servo DSP Ver: x.xxx
AVD ucode Ver: xxxxxxxx
Exit : RETURN
The ROM version, region code, etc. are displayed if
lected in the Test Mode Menu.
The parenthesized hexadecimal number in the version number field
indicates the checksum value of the ROM.
* Note after Downloding
After downloading ROM data, sometimes it happens that
checksum is not the same as that of ROM data that has been
downloaded. In such a case, go back to the menu screen and
select "0. Syscon Diagnosis", then select "1. All" in "2. Ver-
sion". If the result of this operation does not give an agreement,
it must be either Download error or ROM error.

6-9. VIDEO LEVEL ADJUSTMENT

On the Test Mode Menu screen, selecting
for video level adjustment. During display of color bars, OSD dis-
appears but the menu screen will be restored if pressing any key.

6-10. IF CON SELF DIAGNOSTIC FUNCTION

1. AF-98 BOARD (IF CON) TEST MODE
The AF-98 board (IF CON) test mode is the IF CON self diagnos-
tic mode. The IF CON can diagnose the functions of the AF-98
board that the IF CON controls. Normally, the IF CON makes a
serial communication with the SYSTEM CONTROL and oper-
ates following the commands from the SYSTEM CONTROL, but
in the Test mode, the IF CON operates independently from the
SYSTEM CONTROL.
In the Test mode, the following functions can be checked.
1. Button function
2. Remote commander receiving function
[5]
is se-
3. SYSTEM CONTROL-IF CON serial communication
4. Click shuttle function
5. Fluorescent display tube lighting check
6. LED control function
In the Test mode, the set operates same as usual, except voltage
monitoring, communication monitoring, display of fluorescent
display tube, and LED control.
1. The routine that monitors +3.3 V (P-CONT) of MB-108 board
2. The monitoring timer for serial communication with the SYS-
[6]
displays color bars
3. Display of fluorescent display tube (normally, display is made
4. LED control (normally, control is made following the com-
2. OPERATION OF SELF CHECK MODE
The Self Check mode is the function to conduct the basic test to
the FL display and DVD panel section.
2-1. Self Check Mode Transition Processing
At the AC Power ON after reset of IF CON is released with the
MB-108 board are not connected to the AF-98 board, or while
pressing the
mode, enter
mander, and the main unit transits to the Self Check Mode.
6-12
Grid check
Anode check
is not provided.
TEM CONTROL is not provided. The set is not placed in the
Standby mode, even if the communication with SYSTEM
CONTROL is normal.
following the commands from SYSTEM CONTROL)
mands from SYSTEM CONTROL)
x
key on the main unit with the IF CON in STANDBY
[DISPLAY]
(RETURN) →
O
on the remote com-

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