Serial Number Identification & (A-D) Revision Levels - OKIDATA ML320 Service Manual

1.1.02 Serial Number Identification & (A-D) Revision Levels
A
Rev A units are original production units. An interconnect module connects the power supply board
to the main control board.
B
Rev B units are retrofitted to include a modified interconnect module, which prevents corrosion.
C
Rev C units have a cable harness connection between the power supply board and the main control
board. The cable harness replaces the interconnect module.
D
Rev D units have no power supply board. The circuitry for the power supply board has been
incorporated on the main control board.
Please Note the following:
The Rev C main control board (LXMC) and power supply board (SUII) are downward compatible
with Rev A and B units.
The Rev A and Rev B main control board (LXMC) and power supply board (PAII) cannot be used
in Rev C units.
Rev D units do NOT use Rev A, Rev B, or Rev C main control boards, transformers, operator panels,
upper covers, and lower covers. Rev D units have a unique main control board (LXMR), no power supply
board, a 50 volt transformer, and a unique operator panel (LXON).
NOTE:
Please refer to the parts lists
need before ordering to avoid confusion and incorrect parts orders.
Printer Serial Number Identification
There are four serial number revision levels for the Microline 320 and 321 printers. Hardware differences
exist between levels. To identify the revision level of a printer, record the serial number from the back
of the printer. Refer to the following to decode the serial number.
Example Printer Serial Number: 401D0154693
Date Code
Revision
Serial Number 0154693
(Appendix B( ))
401 (4 = year. 01 = month)
D
Service Guide ML320/ML321
Chapter 1 Product Specifications
for parts differentiation. Please be sure of the parts you
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