Test Points - Intermec EasyCoder PD4 Service Manual

Chapter 12—Main Board

12.5 Test Points

74
Signal Location
24 VDC CN27 Pin 3
5 VDC U3 Pin 1
RESET U12 Pin 4
CPURST U16 Pin 3
WRCASL U3 Pin 31
WRCASH U3 Pin 30
RAS U3 Pin 14
RDDW U3 Pin 13
PINT0 U12 Pin 8
BUSY0 U24 Pin 5
USBFXF U40 Pin 12
PDAT CN5 Pin 19
PCLK CN5 Pin 15
PHLTH CN5 Pin 20
HCTL U15 Pin 9
STB1 U18 Pin 10
BLACK U28 Pin 2
SEE U28 Pin 24
THPM CN5 Pin 9
STRIP CN9 Pin 2
POT_CS U28 Pin 11
POT_RS U28 Pin 15
POT_CK U28 Pin 14
POT_DI U28 Pin 12
TXD0 U27 Pin 11
RXD0 U27 Pin 12
Note
24 VDC Power in
5V Regulator output (VCC)
Reset
CPU reset
Column address strobe, low byte
Column address strobe, high byte
Row address strobe
Read/Write
LPT port interrupt
LPT port busy
USB data in interrupt
Printhead serial data
Prithead serial clock
Printhead data latch
Printhead control
Printhead strobe
Black mark sensor
See_through sensor
Printhead temperature sensor
Strip sensor
Potentiometer chip select
Potentiometer reset
Potentiometer serial clock
Potentiometer serial data in
RS-232 Port transmit data
RS-232 Port receive data
Intermec EasyCoder PD4—Service Manual