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MDE-4334C Atlas Start-up and Service Manual · April 2008
Electronic and Electrical Components
PCAs
PCAs
This section provides information specific to PCAs.
Atlas 9800 PCAs
PCAs control the hydraulics and monitor the fuel delivery, compute and display store
transaction information, interface with Fuel Management systems. The term PCA and PCB
may be interchanged suitably.
Note: For proper service of PCAs, the technician must possess knowledge of the functions of
components and how they relate to the system.
shows the interface that relates assemblies and components for the main display
and
on
.
Figure 6-3: Atlas 9800 Series Block Diagram
M075
88
A002 115 VAC without backup battery
M075
88
A001 115 VAC with backup battery
Atlas 9
8
00 Power Supply Board
P3 - AC Input
C063
8
7 LCD Display Board
P1: +5 VDC
Power Fail
Battery and
Ground to CPU
K-Pump RS-4
8
5 Board
M0524
8
A001 with Totalizer output
C063
8
9 Standard
(M065
8
7A001) or K-Pump Pulse-out with Totalizer Boards (M0515
8
A00X)
(M06333KXXXX)
Atlas 9
8
00 CPU Board
Serial Peripheral I/F
ISB PWR/GND
JP1-JP9
SW2
P1 - Hose 1 Valves and STP
P2 - Hose 2 Valves and STP
P3 - Pulser 1
P5 - Pulser 2
P4 - Handle switches
P2: +7.5 VDC
Power to display
Back lights and
Electromechanical
Totalizers
P
8
-
RS-4
8
5 I/F
or
Pulse-out I/F
P6 -
Totalizer
Output
P7 -
Relay
Drive
Connection to
the CPU bd.
Connection to
the CPU bd.
Atlas 9
8
00 Pulse-out I/F with EM Totalizer Drive Board
M075
88
A003 230 VAC with backup battery
M075
88
A004 230 VAC without backup battery
