Cadence II Fetal Monitor Service Manual
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1.3.4 Print Control Board
Record Paper Width: 112mm
Effective Printing Width: 104mm
Dot/Line: 832/mm
Resolution: 8dots/mm
Working Voltage: 5V
Working Circuit: Printhead: 3.4A(Max), 0.9A(Ave)
Electrical Machine: 2.4A(Max), 0.5A(Ave)
Life: MTBF 5*10EXP (7)
50Km
Connect with mainboard by CENTRONIX interface to finish detection of driving, paper
empty or not, and the status of printhead.
Definitions for print board 20P interface jack J5 pins:
PIN No. Function Description
PIN1 STROBE
PIN2 DATA0
PIN3 DATA1
PIN4 DATA2
PIN5 DATA3
PIN6 DATA4
PIN7 DATA5
PIN8 DATA6
PIN9 DATA7
PIN10 ACK
PIN11 BUSY
PIN12 PE
PIN13 ERROR
PIN14 Power supply: +12V
PIN15 GND
PIN16 Vp
PIN17 GND
PIN18 Vp
PIN19 GND
PIN20 Vp
1.3.5 the interface board
The interface board implement communication between the mainboard and the print
control board and the display screen.The DC-AC inverter for 2-cold cathode fluorescent
lamps support wide range of CCFL devices and are characterized by highly stable
output current.
Definitions for each jack pin on the interface board are as follows: