SECTION 5
DISASSEMBLY AND ASSEMBLY
95
MPCA (Main Printed Circuit Assembly) Connections
NOTE: Valid for Z3 and higher Print Engines. This info is NOT valid for Z2i Print Engines
The following chart shows where the connections to the MPCA come from and a brief
description of what they are used for (what they do).
Driver Printed Circuit
Assembly (DPCA)
Feeder Encoder Reader
Board
Service Station Home Sensor, Service Station Index
Sensor, Service Station Lifts Up Sensor, Exit Sensor,
Entry Sensor, Black Mark Sensor, Clamshell
Open/Closed Switch.
Driver Printed Circuit
Assembly (DPCA)
Motor PWM Control/Encoder signals for (a) Print
Engine Paper Motor, (b) Print Engine Pump Motor,
(c) Feeder Motor, (d) Wiper Motor
Power/Paper/Cancel Buttons/LED
Pen Driver Printed Circuit
Assembly (PPCA)
Printhead QAI Bus and 2.5 VDC QAI power, 3.3
VDC logic power for Printhead, VPOS enable &
VPOS power good signal, DOUT from Printhead,
Printhead reset lines, 5 VDC power for current sense
buffer, analog current sense line from PPCA,
pushbutton (2) inputs to MPCA.
Ink level PCA, Pinch Valve,
Ink Cartridge QAI
interfaces
Ink Level Optical Sensors, Print Engine
Accelerometer (level sense), Pinch Valve Actuator
and Position Sensors, Ink Cartridge QAI, Temperature
Sensor.
Service Station Lifter Motor
& Encoder, Service Station
Transport Motor
Service Station Lifter Arm and Transport Drive
signals.
Pen Driver Printed Circuit
Assembly (PPCA)
Primary 24 VDC supply to PPCA.
Printhead Latch solenoid, Printhead Latch
Open/Closed Sensor, Label Gap IR transmitter LED.
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