Firmware Version; Display Check - Yamaha MCR-E810 Service Manual

RX-E810/RX-E410/NX-E800

1. FIRMWARE VERSION

The firmware version, model, destination and checksum are displayed.
The checksum is obtained by adding the data at every 16 bits for each program area and expressing the result as a 4-figure
hexadecimal data.
* Numeric values in the figure example are for reference.

2. DISPLAY CHECK

This program is used to check the FL display section.
The display condition varies as shown below according to the sub-menu operation.
Segment conditions of the FL driver 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 lattice). (In the above example, the segments in the second row from the top
are shorted.)
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Firmware version of microprocessor
VER.xxx 8 UC
Description (UC, BG, ATK, LV)
Model (8: RX-E810, 4: RX-E410)
Checksum value of microprocessor
SUM:xxxx
Checking FL display section
Initial display
All segments OFF
All segments ON (dimmer 100%)
All segments ON (dimmer 50%)
Lighting of segments in lattice
Lighting in lattice
Short Normal
Initial display
All segments OFF
All segments ON (dimmer 100%)
All segments ON (dimmer 50%)
Lighting of segments in lattice