Yamaha R-N500, Service Manual

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S1. FACTORY PRESET
This menu is used to reserve/inhibit initialization of the back-up IC (EEPROM: IC22 on DIGITAL P.C.B.).
S 1 - 1
P R E S E T I N H I
S 1 - 2
P R E S E T R S R V
S1-1. PRESET INHIBIT (Initialization inhibited)
Initialization of the back-up IC is not executed. Select this sub-menu to protect the values set by the user.
S1-2. PRESET RESERVED (Initialization reserved)
Initialization of the back-up IC is reserved. (Actual initialization is executed when the power is turned on
next.) To reset to the original factory settings or to reset the backup IC, select this sub-menu and press
the “ ” (Power) key to turn off the power.
CAUTION: Before setting to the PRESET RESERVED, write down the existing preset memory content of the tuner. (This is
because setting to the PRESET RESERVED will cause the user memory content to be erased.)
S2. ROM VERSION/CHECKSUM
The firmware version and checksum values are displayed.
The checksum is obtained by adding the data at every 8-bit and expressing the result as a hexadecimal notation.
*
Numeric values in the figure are given as reference only.
S 2 - 1
S y s t e m : 0 . 1 3
S 2 - 2
V e r : 0 0 1 3
S 2 - 3
S u m : 3 F 8 C
S 2 - 4
N : 0 0 5 0
S 2 - 5
N - S u m : 6 2 B 6 1 B 9 8
S2-1. SYSTEM VERSION
The firmware version is displayed.
S2-2. MICROPROCESSOR VERSION
The firmware version of MICROPROCESSOR (IC21 on DIGITAL P.C.B.) is displayed.
S2-3. MICROPROCESSOR CHECKSUM
The checksum value of MICROPROCESSOR (IC21 on DIGITAL P.C.B.) is displayed.
S2-4. NETWORK VERSION
The firmware version of Network microprocessor (IC951 on DIGITAL P.C.B.) is displayed.
S2-5. NETWORK CHECKSUM
The checksum value of Network microprocessor (IC951 on DIGITAL P.C.B.) is displayed.
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R-N500
R-N50
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