IBM Infoprint 1130, Service Manual

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Service Manual
IBM Infoprint 1130/1140
mechanically installed under the printer. Communication between
the option and the base printer stops when you remove an option
located above or below the printer. The printer no longer recognizes
the option and deletes associated messages. Each installed option
below the base printer provides an electrical autoconnect to the
option attached below it. The output expander option attached
above the base printer provides power to the option above it. We do
not recommend to attach or “Hot Plug” any options with the base
printer power turned On.
Duplex Option
The duplex option interface is a six pin autoconnector that provides
a +24 V dc, +24 V dc return, serial interface transmit signal, serial
interface receive signal and two ground pins. The duplex option
receives the +24 V dc from the base printer for the duplex motors
and also converts the voltage to +5 V dc for duplex electronics.
Duplex chassis grounding is provided from the printer to the duplex
option through a ground spring attached to the frame and base of
the printer. The ground connection is automatically made when the
option is installed below the printer.
The paper input sensor is located in the rear of the duplex unit under
the input paper guide. The rear cover open switch is located on the
rear cover assembly. The paper exit sensor is located on the left
frame assembly. The jam removal tray open switch is located at the
end of the left frame assembly. There are no switches in the level 2
duplex option.
Option Microcode
The options are “Smart Options” or options that have a system
board. The option system board has a microprocessor that controls
the option mechanism. A software architecture is provided that
controls the option and communicates information such as paper
path status, sensor or switch status, motor status and so on to the
base printer.