Hitachi IJ PH Service Manual page 79

- When using the external dedicated power supply: Irrespective of the output form of the
rotary encoder, set as shown in the following table depending on the power supply voltage.
Power supply voltage
DC12V
DC24V
- Check point/LED
Reference
number
TP1 GND
TP2 Floating GND
TP3 Print target detector- N
TP4 Printing output-N
TP5 Fault-P
TP6 Warning-P
TP7 Encoder-N
TP8 RD
TP9 SD
LED1 Print target detector
input
LED2 Printing stop input
LED3 Rotary encoder input
LED4 Deflection voltage
ON/OFF input
LED5 Reverse direction
printing input
LED6 Printing output
LED7 Run input
LED8 Reset input
LED9 Stop input
LED10 Online output
[Note at the replacement]
- When replacing boards, be sure to turn off the power.
- Perform the setting of SW1 and 2.
[EZJ95 board external view]
Five fixing screws
TP3
TP8
TP9
Five fixing screws
LED1 – LED10
SW2 - 1 SW2 - 2
OFF
OFF
Name
Reference ground of IJ printer side circuit
Reference ground of external part (conveyer side)
photo coupler insulation circuit
Printed target detector input
("L" at signal inputting)
Printing signal output ("L" at signal outputting)
Fault output ("H" at fault)
Warning output ("H" at warning)
Encoder input ("L" at signal inputting)
External communication (receiving data)
External communication (transmitting data)
When the Print target detector is ON, it is lighted.
When the printing stop signal input is ON, it is
lighted.
When the rotary encoder signal input for product
speed matching is ON, it is lighted.
When the deflection voltage ON/OFF signal input is
ON, it is lighted.
When the reverse direction printing signal input is
ON, it is lighted.
When the
signal output is ON, it is lighted.
When the run signal input is ON, it is lighted.
When the reset signal input is ON, it is lighted.
When the stop signal input is ON, it is lighted.
When the online output is ON, it is lighted.
TP4 SW2
Five fixing screws
3-24
SW2 - 3
ON ON
OFF ON
Content
printing-in-progess/printing-completed
TP1 TP7
SW1
TP2
TP5
SW2 - 4
OFF
OFF
Five fixing screws
TP6
Five fixing screws