Bru-300/300P - Sony BRC-300 Service Manual

1-6-3. BRU-300/300P

Firmware has not been written in the MC-66 board or the
MPU (IC3518/MC-66 board) specified as a service part.
After replacing the MC-66 board or the MPU (IC3518),
write the firmware.
Tools/Equipment
. PC (personal computer)
PC with the firmware writing program installed
(Refer to Section 1-6-1.)
. Color monitor
. VISCA RS-232C cable (Supplied with this unit)
. Extension board EX-947
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The firmware can be written without the extension
board.
. Firmware file: "Cyclone_MIU.mot"
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To get the firmware, contact your local Sony Sales
Office/Service Center.
Connection Diagram
BRU-300
VISCA RS-232C
Card slot
IN
VIDEO
75 Z
OUT
IN
Color monitor
Writing Procedure
1. Remove the blank panel or the optional board.
(Refer to Section 1-4-2.)
2. Connect the equipment and tools, referring to Connec-
tion Diagram.
1-14
EX-947
CN001
RS-232C
PC
VISCA RS-232C cable
3. Set the switch S003 on the EX-947 board to WRITE.
When the EX-947 board is not connected, remove the
cover panel, and set the switch S3501-1 on the MC-66
board to ON. (Refer to Section 1-4-1.)
4. Turn on the power of all the equipment.
5. Write the firmware, referring to step 5 in Section 1-6-
2.
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Selecting firmware file is "Cyclone_MIU.mot".
6. Turn off the power switch of the BRU-300/300P.
When using the EX-947 board
7. Reset the switch S003 on the EX-947 board to NOR-
MAL.
8. Turn on the power switch of the BRU-300/300P while
pressing the switch S001 on the EX-947 board.
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Press the switch until the message "Doing Super
Reset" appears on the color monitor.
When not using the EX-947 board
7. Reset the switch S3501-1 on the MC-66 board to OFF.
8. Turn on the power switch of the BRU-300/300P while
pressing the switch S4801 on the CN-2548 board.
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Press the switch until the message "Doing Super
Reset" appears on the color monitor.
9. Check that the message "End of Super Reset Please
Restart" is displayed, and turn off the power of all the
equipment.
10. Perform "3-4. BRU-300/300P Electrical Alignment".
EX-947
board
S003
S001
S003
BRC-300/300P
BRU-300/300P