Diagraph PA/4000, Service Manual, Page: 150 / 213

Technician’s Guide 2-6
signals from the Prodigy Plus Board on pins 2 and 3 of the J8 connector. The Applicator to
Prodigy Ribbon Cable Assembly (6105-058) must be connected to the J8 connector for the
PA/4000 to operate correctly.
The Applicator Board communicates to the Connector Board (6105-138) and the Hand-Held
Terminal (6105-260) through the P1 connector. It receives signals from the Present sensor, the
Auto-Retract Sensor, and the Cylinder Home sensor on this connector. The Applicator Board
communicates to the Hand-Held Terminal via an RS232 signal scheme on pins 1, 9 and 10 of
this connector. The Warning Tower signals and the Secondary Wipe Down signals also come
onto the Applicator Board through the P1 connector. Finally, the Photo Cell input signals from
Photo Cell 1 and Photo Cell 2 also come onto the Applicator Board through the P1 connector.
CONNECTOR BOARD (6105-138)
The Connector Board provides the cable connections for the PA/4000’s external hardware. The
external hardware consists of the following items:
Warning Tower Assembly (6105-271)* optional
Tamp Cable Assembly (6105-250) or Tamp Cable Assembly Long
(6105-353)
Secondary Wipe Down Cable Assembly (6105-105) *for PA/4020 only
Photo Cell 1 (5700-216)
Photo Cell 2 (5700-216) *Optional
Hand-Held Terminal (6105-260)
There are five DB9 style connectors, J2 through J6, as well as one RJ11 connector that provide
the interconnections for the external hardware. There is also a 20 Pin connector, P1, on the back
of the board which provides the interconnect path to the Applicator Board (6105-119).
The Connector Board interfaces to the Hand-Held Terminal through the J1, RJ11 style,
connector. Pin 1, of the J1 connector, is connected directly to 5.0 Vdc. Pins 2 and 3 are the
transmit and receive pins for the RS232 style communication protocol to the Hand-Held
Terminal. Finally pin 4 is connected directly to digital ground (DGND).
The J2 connector is a DB9 female style connector. It provides a connection path for the Photo
Cell 1 (5700-216) cable assembly. Pin 6 is connected directly to 24.0 Vdc and pin 3 in connected
directly to Analog ground (AGND). Pin 8 is the return signal from the Photo Cell and it is an
Open Collector output. When their is no box being sensed by the Photo Cell, the voltage will be
5.0 Vdc on pin 8. When a box is sensed by the Photo Cell, the voltage will be less than 0.5 Vdc
on pin 8.
The J3 connector is also a DB9 female style connector. It provides a connection path for the
Photo Cell 2 (5700-216) cable assembly. This photo cell is optional and is used only when
PA/4020 units are configured for Secondary Wipe Down applications. Pin 6 is connected
directly to 24.0 Vdc and pin 3 in connected directly to analog ground (AGND). Pin 8 is the
return signal from the Photo Cell and it is an Open Collector output. When their is no box being
sensed by the Photo Cell, the voltage will be 5.0 Vdc on pin 8. When a box is sensed by the
Photo Cell, the voltage will be less than 0.5 Vdc on pin 8.