Upgrading The System/Servo Cpu Program Version - Sony DSR-2000 Service Manual

3-9. Upgrading the System/Servo CPU Program Version

3-9. Upgrading the System/Servo CPU Program Version
The DSR-2000/2000P mounts the CPU for SY and SP on the SY-278 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 (DJ-376 : J-6443-760-A).
(2) Download softwares from a PC through RS-422.
3-9-1. Version Upgrade using the DJ-376
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/SV CPU MX27C2000DC-12 (8-759-477-94) or equivalent
SP CPU M27C1001-70F1 (F8) (8-759-583-91) 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
SY CPU (IC102/SY-278)
SP CPU (IC302/SY-278)
SV CPU (IC119/SV-212)
(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:
D102 and D104 light: BLANK CHECK is being executed
D103 lights:
D104 lights:
(4) Only D105 (a green LED next to three red LEDs) lights, Then, writing is finished.
D105 lights:
D101 lights:
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.
3-38
Connect to DJ-376
CN1/SY-278
CN2/SY-278
CN2/SV-212
ERASE is being executed.
COPY is being executed.
VERIFY is being executed.
Normal
Abnormal
DSR-2000/2000P