Avery Berkel CX20 SERIES, Service Manual

Page: 303 / 353

Addendum A — Phase 1.4 and CX34 Parts List
A–16 CX20/CX30/CX34 Addendum A
Table A.7 Main PCB – Link Functions
Link Type Description
LK1 2–way DC motor boost
(1–2 = selected)
LK2 2–way Scale EPROM select
(1–2 = 2 x 128K standard fit or 2 x 256K; 2–3 = 2 x 512K)
LK3 2–way Printer software select
(1–2 = Phase 1.3; 2–3 = Phase 1.4)
LK4 2–way Printer software select
(1–2 = Phase 1.3; 2–3 = Phase 1.4)
LK5 2–way Rohm (label and receipt)/Axiohm print head select
Rohm: 1–2 = 3 dots/mm; 2–3 = 7.52 dots/mm
Axiohm: 3 dot = not fitted; 1–2 = 7.52 dots/mm
LK6 2–way Printer XTAL frequency select
(1–2 = 16MHz; 2–3 = 24MHz)
LK7 2–way In–line display metric/avoir grid select (CX20 only)
(1–2 = metric display; 2–3 = avoir display)
LK8 2–way Printer EPROM select
(1–2 = 27 512 standard fit or 27C101 or 27C020; 2–3 =
27C040)
LK9 – Not used.
LK10 2–way Printer EPROM select
(1–2 = 27 512 standard fit or 27C101; 2–3 = 27C020 or
27C040)
LK11 2–way Display CX20/CX30 mode select
(1–2 = CX30 mode select)
(2–3 = CX20 mode select)
LK12 2–way Scale RAM select
(1–2 = 128K; 2–3 = 512K)
LK13 2–way Metric/Avoir grid select – CX20 plug–in, integral displays only
(1–2 = avoir display; 2–3 metric display)
LK14 1–way Switch 1 disable
(normally omitted)
LK15 – Not used.
LK16 – Not used.
LK17 1–way A/D interface select
(fitted for dual slope A/D convertor, standard fit)
LK19 2–way Axiohm (receipt)/Rohm (label and receipt) printer select
(1–2 = Rohm printer; 2–3 = Axiohm)
NOTE: The values for 27C101, 27C020 and 27C040 are 128K x 8, 256K x 8
and 512K x 8, respectively.