Sony DVP-NS3100ES Service Manual page 18

DVP-NS3100ES
DISPLAY SECTION
DISPLAY TEST MODE
Execute the Self Check Mode along the following flow.
START
I/F CON information
FL tube grid and segment check
SIRCS reception check
Key check
Jog and LED check
FINISH
1. Entering the Display Test Mode
The Display Test mode starts if either of the following conditions is
satisfied.
Condition 1:
With the SELF_CHECK (pin oj) of the IF CON (IC404) on the
MAIN board kept "low", turn the power on.
Condition 2:
While pressing the key on the set when the set is in standby
x
state, press the [RETURN] t [DISPLAY] key on the remote
commander and the mode transits to the Self Check mode.
When the Self Check mode started, "TEST START" is displayed
on the FL tube for 2 seconds and then the Self Check proceeds to
the IF CON information display.
2. Releasing the Display Test Mode
To release the Self Check mode, disconnect the AC plug.
3. IF CON Information Display
When enter this mode, it displays as follows.
All segments turn on
Model type display
Destination display
Version display
ROM creation date display
If the button is pressed, the test proceeds to the following FL
x
tube GRID and SEGMENT check.
18
4. FL Tube Grid and Segment Check
First, a grid lights up one after another, and when grid 16 lights up,
all grids light up.
Next, all grids go off, and segments are displayed while changing
the patterns.
A way of this display is repeated.
(The interval of grid lighting is 0.2 second, and that of segment
lighting is 0.4 second.)
FL tube GRID check
GRID1 on
GRID2 on
GRID16 on
ALL OFF
The 1st SEG of each GRID on
The 2nd SEG of each GRID on
The 18th SEG of each GRID on
If the button is pressed, the test proceeds to the following SIRCS
x
reception check.
5. SIRCS Reception Check
Upon start of the SIRCS reception check, "SIRCS CHECK" is
displayed on the FL tube.
Once the SIRCS key code is received, the test proceeds to the
following Key check.
SIRCS reception check
Wait for SIRCS code receiving
(Once the SIRCS code is
received, the check finishes.)
SIRCS reception check finish
If the button is pressed as a cancel processing of the SIRCS
x
reception check, the test proceeds to the following Key check.
(0.2 sec interval)
(0.2 sec interval)
(0.2 sec interval)
(ALL GRIDs light up)
(0.2 sec interval)
(0.4 sec interval)
(0.4 sec interval)
(0.4 sec interval)
(0.4 sec interval)
Cancel processing
(Press the button)
x