1/3/05
888-2517-001
G-3
WARNING: Disconnect primary power prior to servicing.
Appendix G Platinum TV Monitor
eCDi ™
G.2.3
Installing Firmware and Memory
Make certain you clearly understand the proper way to set the transmitter clock and
calendar. The monitor board is reset by the installation process and you will need to
enter the current time and date when you are done. All user setup data is stored in the
monitor board and will be lost during the upgrade.
STEP 1
Check the alarm list and note down any alarms of which you wish to
keep a record. These entries will also be lost during the upgrade.
STEP 2
Check and make note of any other special setups or entries you have
programmed into the transmitter.
STEP 3
When the transmitter is off-air and available for the upgrade, open the
control cabinet front panel and turn OFF the control cabinet main circuit
breaker to the left of the controller board. This removes all power from
the area in which you will be working.
STEP 4
Make sure you are using a properly-grounded wrist strap before
proceeding. The memory PROM's you will be installing are static-
sensitive and can be destroyed by even a very small electrostatic
discharge.
STEP 5
Disconnect the battery from the monitor board (upper large board behind
the control cabinet front panel).
STEP 6
On the monitor board, locate the existing firmware PROMs (U17 and
U18) and remove them carefully. Take care to avoid damage to the
PROMs, the board, or nearby components.
STEP 7
Check each of the new PROMs to be sure all pins are straight and
properly oriented; then, install each in its' numbered socket, with the
locator notch oriented to the left.
If the removed PROMs were Revision E.0.12 or earlier, install the added components
from the 994 9267 004 upgrade kit as follows:
STEP 8
Remove old PROMs U19 and U20 from the monitor board.
STEP 9
Install the two new SRAM IC's in the U19 and U20 sockets. They should
be positioned with the locator notch in the same direction as the IC's
which were removed.
STEP 10
Remove the address decoding PAL IC from socket U8.
STEP 11
Install the new decoding PAL, 917 2236 001 in socket U8.
Содержание eCDi
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Страница 172: ...E 10 888 2517 001 1 3 05 WARNING Disconnect primary power prior to servicing eCDi Appendix E Platinum TV Fault and...