3-33
DSR-2000A/2000AP
3-9. Upgrading the System/Servo CPU Program Version
The DSR-2000A/2000AP mounts the CPU for SY and SP on the SY-278A board, CPU for SV on the
SV-212 board and uses flash ROMs for stored this program.
For re-writing flash ROMs, two methods are provided.
(1) Use the fixture.
(2) Download softwares from a PC through RS-422.
3-9-1. Version Upgrade using the DJ-376 (In SY CPU/SP CPU)
Setting of DJ-376
Write softwares into PROMs below.
Use the fixture : J-6443-760-A (DJ-376)
ROMs to be used on the fixture DJ-376:
SY/SP CPU MX27C2000DC-12 (8-759-477-94) 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 softwares are written, into the socket on the fixture DJ-376.
(2) Set bit 1 of S101 on the fixture DJ-376 to OPEN (upper side) and the rest of bits to the board side
(lower side).
How to upgrade
(1) Remove the top panel. (Refer to Section 3-3.)
(2) Connect the fixture DJ-376, on which PROMs are installed, as follows.
CPU Connect to DJ-376
SY CPU (IC101/SY-278A) CN1/SY-278A
SP CPU (IC301/SY-278A) CN2/SY-278A
(3) Turn on the power to the set, Then, writing starts.
While writing is being executed, the LEDs of the fixture DJ-376 show the status shown below.
D102 lights: ERASE is being executed.
D102 and D104 light: BLANK CHECK is being executed
D103 lights: COPY is being executed.
D104 lights: VERIFY is being executed.
(4) Only D105 (a green LED next to three red LEDs) lights, Then, writing is finished.
D105 lights: Normal
D101 lights: Abnormal
In an event of abnormally, suspect the cause judging from status of LEDs.
(5) Power down the set. And remove the fixture DJ-376.
(6) Turn on the power to the set, and confirm the version of upgraded CPU in the MAINTENANCE
MENU.
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