Yamaha DSP-AX1, Service Manual

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DSP-AX1/RX-V1
DSP-AX1/RX-V1
7. DISPLAY CHK
EFFECT OFF
7. DISPLAY CHK
This program is used to check lighting of the FL display which changes as shown below according to operation of
the sub-menu.
The signals are processed in the same way as EFFECT OFF of No.4. (The L/R signal is output using ANALOG
MAIN BYPASS setting.)
As for internal/external synchronization switching of super-imposing (image signals), forced external synchroniza-
tion is selected by the microprocessor control.
Segment conditions of the FL driver (IC901, IC902) and the FL tube are checked by turning ON and OFF all
segments. Next, the operation of the FL driver is checked by using the dimmer control. Then a short between
segments next to each other is checked by turning ON and OFF all segments alternately (in a lattice). (In the above
example, the center segment in the second row from the top is shorted.)
[Remote control code: 7A—8E (PRG 8)]
Initial display
Lighting in a lattice
Example of
short
Normal
[Remote control code: – – – – ]
All segments OFF
Lighting of segments in a lattice
[Remote control code: – – – – ]
[Remote control code: – – – – ]
All segments ON (dimmer 100%)
All segments ON (dimmer 50%)
[Remote control code: – – – – ]
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