Removing The 500 Circuit Board, The Microprocessor - Kodak X-Omat 270 RA Service Manual

Removing the 500 Circuit Board, the Microprocessor

Possible damage from electrostatic discharge.
[1] Deenergize the PROCESSOR. See page 1-5.
[2] Lift the TOP COVER and remove the EXIT
PANEL.
[3] Extend the ELECTRICAL BOX and open the
COVER.
[4] Disconnect the 9 CONNECTORS from the
500 CIRCUIT BOARD.
[5] Remove the 8 SCREWS and the 500
CIRCUIT BOARD.
[6] Using EXTRACTION TOOL TL-4430, remove
and transfer the 4 PROMS/EEPROMS U17,
U18, U19, and U20 from the existing 500
CIRCUIT BOARD:
(a) Move the 4 PROMS/EEPROMS U17,
U18, U19, and U20 to the new 500
CIRCUIT BOARD.
(b) Place each EEPROM carefully on the
SOCKET.
(c) Check that the keyed corners are
aligned.
6-10
SCREW (8)
(d)
[7] Check that the EEPROMS are installed in the
correct SOCKETS.
[8] Remove the BATTERY from the existing 500
CIRCUIT BOARD and install the BATTERY
on the new 500 CIRCUIT BOARD.
Keyed corner
of PROM
500 CIRCUIT
BOARD
COVER
Press the EEPROM firmly into the
SOCKET.
Keyed corner
of SOCKET
BATTERY
CONNECTOR (9)
EEPROM
ELECTRICAL
BOX
H104_0442HCA
H104_0442HA
H104_0312ACA
2B6845