SATO GL4XXE Manual de Serviço descarregar pdf (Página 145)

Unit 7: Replacement Procedures

GL4xxe Series Service Manual

7-6

MAIN PCB REPLACEMENT

The main circuit board is the primary brain-center for all printer activities. Circuit boards generally have long lives

due to the lack of moving parts. So if a circuit board becomes defective, it is usually due to a negative external

condition. If it is determined that the circuit board has become defective, search the printer over for possible visual

factors that may have led to the damage.

1. Turn the printer OFF, remove all interface cards and open the Left-Hand Cover (see Figure 7-3a) to access

the main circuit board. Disconnect all cables marked as (1) in Figure 7-4.

2. Remove four screws marked as (2) in Figure 7-4.

3. Remind the Bind P tight screw marked as item 3 in Figure 7-4.

4. The main PCB (4) can now be removed and replaced.

Figure 7-4, Main PCB Replacement

5. Secure the replacement board with the Bind P tight screw (3) and reconnect all cables disconnected

previously. If you wish to test the installation before finalizing reassembly, do not reinstall the four screws

removed in Step 2; otherwise, you can proceed to reinstall the four screws.

6. After the main PCB is certified to be in working condition, proceed to replicate the DIP switch settings and

adjustments of Pitch Sensor, Print Density, Offset and Pitch values set in the previous board. (See the

Operator’s Manual for instructions for performing these settings).

NOTE: Figure 7-3a of the this chapter for details on opening/removal of the side

cover.

CAUTION: OPENING THE REAR HOUSING COVERS WITH INTERFACE CARDS

INSTALLED WILL RESULT IN COMPONENT DAMAGE. ALWAYS REMOVE FIRST.

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SATO GL4XXE Manual de Serviço Página 145