SATO M84PRO service manual Replacement Procedures, Main Circuit Board Replacement

REPLACEMENT PROCEDURES 7

The M84PRO Printer contains replaceable components and sub-assemblies. This section contains step-by-step instructions for the removal and replacement of those primary components and sub-assemblies that are subject to wear or damage.

MAIN CIRCUIT BOARD REPLACEMENT

The main circuit board contains the control electronics for the printer and is located behind the left side cover. The interface board must be removed prior to the main circuit board. The daughter board and optional memory card should also be removed to prevent possible damage during circuit board removal.

1Switch off the printer and disconnect the power supply cord.

2Open/remove applicable housing covers.

NOTE: Figure 10-1 of the Daigrams & Schematics section provides guidance on housing cover removal.

3Disconnect all wiring harnesses attached to main circuit board (1, Figure 7-1) or daughter board (2).

4

	RD
IEEE1284	+ RSBOA

3

7

8

1

			D
		AR
	R BO
WE
PO

8

8

					N
				TIO
			RA
		GU
	NFI
LTCO
BE

6

5

2

Figure 7-1, Circuit Board Replacement

M84Pro Service Manual PN: 9001111A Page 7-1