6-8. VERSION INFORMATION6-10. IF CON SELF DIAGNOSTIC FUNCTION
## Version Information ##1. AI-23 BOARD (IF CON) TEST MODE
The front board test mode is the IF CON self diagnostic mode.
IF con.Ver : x. xxx (xxxx)
The IF CON can diagnose the functions of the front panel boards
Group 00
that the IF CON controls. Normally, the IF CON makes a serial
SYScon.Ver : x. xxx (xxxx)communication with the SYSTEM CONTROL and operates fol-
Model xxlowing the commands from the SYSTEM CONTROL, but in the
Region 0xTest mode, the IF CON operates independently from the SYS-
Servo DSP. Ver : 1. xxxxTEM CONTROL.
OPT Type : x LASER
In the Test mode, the following functions can be checked.
Exit: RETURN
1. Button function
_
2. Remote commander receiving function
3. SYSTEM CONTROL-IF CON serial communication
The ROM version, region code, OPT type, etc. are displayed if
4. Click shuttle function
[5] is selected in the Test Mode Menu.
5. Fluorescent display tube lighting check
The parenthesized hexadecimal number in the version number field
Grid check
indicates the checksum value of the ROM.
Anode check
6. LED control function
Note : After down loading ROM data, sometimes it happens that
checksum is not the same as that of ROM data which has
In the Test mode, the set operates same as usual, except voltage
been down loaded. In such a case, go back to the menu
monitoring, communication monitoring, display of fluorescent
and select O0. Syscon Diagnosis�, then select O1. All� in
display tube, and LED control.
O2. Version�. If the result of this operation does not give
1. The routine that monitors +3.3 V (P-CONT) of MB-98 board
an agreement, it must be either Down Load error or ROM
is not provided.
error.
2. The monitoring timer for serial communication with the SYS-
TEM CONTROL is not provided. The set is not placed in the
6-9. VIDEO LEVEL ADJUSTMENT
Standby mode, even if the communication with SYSTEM
CONTROL is normal.
On the Test Mode Menu screen,[6] selecting displays color bars
3. Display of fluorescent display tube (normally, display is made
for video level adjustment. During display of color bars, OSD dis-
following the commands from SYSTEM CONTROL)
appears but the menu screen will be restored if pressing any key.
4. LED control (normally, control is made following the com-
mands from SYSTEM CONTROL)
Measurement point : LINE OUT VIDEO
(75 & terminating resistance)
2. OPERATION OF SELF CHECK MODE
Measuring instrument : Oscilloscope
The Self Check mode is the function to conduct the basic test to
Adjustment device: RV501 on MB-98 board
Specified value+ 0.04:1.0 Vp-pthe FL display and DVD panel section.
� 0.02
2-1. Self Check Mode Transition Processing
At the AC Power ON after IF CON (IC404) was reset, the input to
10pin (SELF CHECK) is judged and if OLow� is entered, the main
unit transits to the Self Check mode. In this port input judgment,
the result of 3-time attempts must be same (assuming that the MB-
+ 0.04
1.0� 0.02 Vp-p98 board is not connected). hile pressing the W[STOP] key on the
main unit with the IF CON in STANDBY mode,[RETURN] enter ?
[DISPLAY] (or [SET UP]) on the remote commander, and the unit
transits to the Self Check Mode. The Self Check mode terminates
when the IF CON transits to the STANDBY mode.
6-11 |
ACEC
