6-13
6-10. IF CON SELF DIAGNOSTIC FUNCTION
1. FR-173 BOARD (IF CON) TEST MODE
The FR-173 board (IF CON) test mode is the IF CON self diag-
nostic mode. The IF CON can diagnose the functions of the front
panel boards that the IF CON controls. Normally, the IF CON
makes a serial communication with the SYSTEM CONTROL and
operates following thecommands 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. Remocon receiving function
3. SYSTEM CONTROL-IF CON serial communication
4. Click shuttle function
5. Fluorescent display tube lighting check
Grid check
Anode 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 (PON CHK) of MB-94 board
is not provided.
2. The monitoring timer for serial communication with the SYS-
TEM CONTROL is not provided. The set is not placed in the
Standby mode, even if the communication with SYSTEM
CONTROL is normal.
3. Display of fluorescent display tube (normally, display is made
following the commands from SYSTEM CONTROL)
4. LED control (normally, control is made following the com-
mands from SYSTEM CONTROL)
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
While pressing the [STOP] key on the main unit with the IF CON in
STANDBY mode, enter [RETURN] → [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.
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