Avery Berkel CX20 SERIES, Service Manual

Page: 143 / 353

11 — Main PCB
11–14 CX20/CX30/CX34 Service Manual
11.2.7 Replacing the main PCB
In the event of a malfunction on the main PCB, it should be returned for
exchange, as follows:
1 Remove main PCB (refer to Section 11.2.1, 11.2.3 or 11.2.5, as
appropriate).
2 On receipt of new main PCB, check correct firmware is fitted, as
follows:
check part number of main PCB
check type of printer EPROM is fitted
check correct type of main EPROMs are fitted
check correct type of PROMX is fitted
check correct RAM is fitted
check, before fitting, that battery is switched off (to be switched on
after main PCB has been fitted)
check and set all DIL switches
check and set all jumper links.
3 Fit main PCB (refer to Section 11.2.2, 11.2.4 or 11.2.6, as appropriate).
4 At power up, set configuration data (refer to Section 6).
5 Calibrate machine (refer to Section 7).
6 Test unit and adjust printer motor current (refer to Section 19 or 20, as
appropriate).
7 If data was backed–up, load stored data (refer to Part 2, Programming
Handbook for use of the DCU).