Intermec EasyCoder 501 – Service Manual Ed. 7
146
Chapter 17 CPU Board
17.7 Test Points
POWER ON
FLASH
EPROM
LTS
LSS
R-END
DISP
+
-
+40V
V24
P24
/RESET
VEE
ADS
NHOLD
040700.10
040700.10
The CPU board is provided with seven test points that can be used
to check various signals or voltages using an oscilloscope or a volt-
age meter.
ADS Address strobe. Controls address latches.
NHOLD Hold request from DMA active low.
VEE Battery voltage. Min. 3.0V at power up. Nominal 3.6V.
/RESET Reset, active low during power up. High at normal operation.
P24 Printhead v24V ±1V during print cycle and cutter operation.
+40V Stepper motor v40V ±2V.
V24 24V ±1V, generates P24 and +40V.