31 March, 1999
ELECTRICAL WIRING
6-35
Replacement
Adjustment
6.5 ELECTRICAL WIRING
6.5.1 CONTROLLER BOARD, TEMPERATURE/HUMIDITY SENSOR
NOTE: Before replacing the controller, print the list of settings whenever possible.
In the event of NV-RAM damage, it is necessary to configure all settings
according to the list.
1. Remove the tray cover [A]. (two
screws).
2. Remove the temperature/humidity
sensor cover [B] (one screw).
3. Remove the temperature/humidity
sensor [C] (one screw, one connector
[D]).
NOTE: If the customer has added
optional expansion memory or
a NIC, remove it before
controller replacement.
Remember to install the
memory or NIC on the new
controller board.
4. Remove the controller cover [E] (16
screws, including 2 screws around parallel
port).
5. Remove the controller board [F] with the
bracket [G] attached to it (six screws, one
connector [H]).
6. Remove two screws and one bracket [G]
from the controller board.
NOTE: To replace controller boards, remove
the NVRAM chip (IC23) on the old
board, install it on the new board, then
install the new board. The NVRAM chip
stores user settings and service
records. These settings will be lost if
the NVRAM chip is not transferred.
G024R164.WMF
G024R184.WMF
G024R166.WMF
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
