Service manual

Page 6-7
Section 6. Replacement Procedures
PN 9001080
Rev. A
SATO M-8485Se Standard Print Engine
Service Manual
6.4 Replacing the Main Circuit Board
STEP PROCEDURE
1. Switch the printer OFF and disconnect the power cable.
2. Remove (5) screws securing the back panel to the cabinet. Figs. 6-8
3. Remove screw from cabinet side to allow printer halves to swing open for
access to the inside of the printer. Figs. 6-8
4. Reach inside cabinet and detach connector. Fig. 6-9
5. From the back of the printer (Back Panel has been removed) remove (4)
screws as shown in Figs. 6-10. Pull the PCB board (still attached to the
frame) out the back of the printer.
6. Remove (2) screws holding the Service Board and bracket to the main PCB.
Detach the connector. Set aside for reassembly to the replacement PCB. Figs.
6-10
7. Note cable connections locations, then disconnect all cables from the PCB
board. Figs. 6-11
8. Remove (2) screws from EXT Connector. Figs. 6-12
9. Remove (3) screws to detach PCB board from the frame. Remove the board
from the printer. Figs. 6-12
10. Locate the Flash Memory Module on the Main PCB Board. Figs. 6-11
Carefully press outward on the tabs on both ends of the Main PCB Board
Memory Frame to release the Memory Module PCB. The module should lift
by itself when released. Remove the module from the frame. Note the
indexing notches. Figs. 6-13
Set the Memory Module PCB aside for installing on the replacement Main
PCB.
11. Install the Memory Module on the replacement Main PCB. Note the indexing
notches. Insert the module into the Main PCB Memory Frame at
approximately 45
0
away from the Main PCB Board. Gently push down to snap
into position. Figs. 6-14
NOTE: Many of the components on this board are susceptible to damage by static
electricity. To avoid damage from static electricity, do not unpack new circuit boards
from anti-static bags until instructed to do so and use a wrist grounding strap.