Firmware Update; Upgrading The Version Using The Fixture Board - Sony HDV HVR-1500 Service Manual

2-17. Firmware Update

The HVR-1500 mounts the CPU for SY and SV on the SSS-12 board and uses flash ROMs for loading
this program.
Do the following procedure to upgrade the version of the flash ROMs mounted on the board.
There are two methods of the upgrading the flash ROMs.
(1) High-speed writing using the fixture board, J-6444-970-A (DJ-497)
(2) Writing by downloading from a PC (through RS-422)

2-17-1. Upgrading the Version Using the Fixture Board

1. Setting the fixture board DJ-497
Write the CPU software to be written into the following PROMs.
ROMs to be used on the fixture DJ-497:
SV CPU M27C4001-10F1-(G) (8-759-568-73) or equivalent
SY CPU M27C4001-10F1-(G) (8-759-568-73) or equivalent
As these CPUs employ 16 bits data bus, 2 pieces of PROMs are required for one CPU.
Write softwares into PROMs in the 8 bit split mode. A PROM at even address side is for CN102.
A PROM at odd address side is for CN101.
(1) Insert the PROMs, in which CPU software are written, into the socket on the fixture board DJ-497.
(2) Set bit 1 of S1 on the fixture DJ-497 to OPEN (upper side) and the rest of bits to the board side
(lower side).
(3) Set S3 on the fixture DJ-497 to [ROM] side and S2 on the fixture DJ-497 to [DOWN] side.
(4) Set S4 on the fixture DJ-497 to [8M].
HVR-1500
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