Intermec EasyCoder PC4 Service Manual page 59

TP1 POWER
TP2 VDD
TP3 VCC
TP4
TP5 RESET
TP6
TP7 PHSTB1
TP8
TP9 TPH
TP10 TPH_CTL
TP11 TPH_TM
TP12
TP13
TP14 TXD0
TP15 RTS0
TP16 RXD0
TP17 CTS0
TP18 PBUSY
TP19 PACK
TP20 PINT
TP21 PP1
TP22
TP23 USBRXF
TP24 USBTXE
TP25 USBCS_W
TP26 USBCS_R
TP27 RIBBON
TP28 STRIP
TP29 DOOR
TP30 POT_MID
TP31 POT_CLK
TP32 POT_DI
TP33 POT_CS
TP34
TP35 WRCASL
TP36 WRCASH
TP37 RD#
TP38 RAS
Intermec EasyCoder PC4—Service Manual
Power in detection to CPU
24V
5V
3.3V
System reset
Stepper motor over temperature signal
TPH control
Gate Voltage on TPH power switch
Dot resistance measuring point
TPH control
N/A
Future use
Future use
RS232 TTL
RS232 TTL
RS232 TTL
RS232 TTL
Parallell port Busy signal
Parallell port Ack signal
Parallell port Interrupt
Parallell port Data strobe signal
USB Crystal 6MHz
N/A
N/A
N/A
N/A
Ribbon present signal
Label taken signal(LTS)
Head lift signal
Digital potentiometer control
Digital potentiometer control
Digital potentiometer control
Digital potentiometer control
CPU crystal 20MHz
DRAM Control
DRAM Control
Read enable
DRAM Control
Chapter 7—Main Board
53