Sony HDV HVR-1500 Service Manual page 42

2. How to upgrade
(1) Remove the top panel of the unit. (Refer to Section 2-7-1.)
(2) Extend the SSS-12 board with the extension fixture board DJ-516. (Refer to section 2-15.)
(3) Connect the fixture board DJ-497, in which the PROMs of the CPU software to be written are
installed, as shown in the following figure.
CPU of software to be written
SY CPU (IC501/SSS-12)
SV CPU (IC202/SSS-12)
When re-writing the SY CPU
DJ-497
CN1
SSS-12 board
(4) Turn on the power of the set. Then, writing starts.
While writing is being executed, the LEDs of the fixture DJ-497 show the status shown below.
D2 lights up.
D2 and D4 light up.
D3 lights up.
D4 lights up.
(5) When LED becomes the following, writing ends.
D1 blinks. Normal termination of SY CPU processing.
D5 lights up. Normal termination of SV CPU processing.
(6) Turn off the power switch of the unit and remove the fixture board.
(7) Turn on the power switch of the unit again and confirm the SOFTWARE version on the maintenance
menu. (Refer to Section 4-3-8.)
2-28
Target board to which DJ-497 is connected
CN1/SSS-12
CN2/SSS-12
When re-writing the SV CPU
SSS-12 board
ERASE is being executed.
BLANKCHECK is being executed.
COPY is being executed.
VERIFY is being executed.
DJ-497
CN2
HVR-1500