Service manual
XLP 504 / XLP 506
05/2018 | 04
85
Service Electronics
Fuses:
The fuses used on the I/O board are polymeric positive temperature coefficient resistors. If they trip,
they don´t blow and after cooling down, they work again. They don´t need to be replaced.
Testing the Signal Interface
The USI-testbox was designed for use with the USI interface, the „big brother“ of the I/O board,
matching the 64-bit printer family. But it can also be applied to the I/O board, if the following is taken
into account:
[123] Left side: The USI testbox (A2739). Right side: Connection cable (A2842). Both parts are required for the application.
Not all of the output signals on the USI board are also available on the I/O board. The pins of not
available signals are grounded on the I/O board. The following signal lamps for outputs are there-
fore always lighting on the testbox:
• RIBBON OUT
• MEDIA OUT
• WARNING
Those inputs are not available on the I/O board:
• PLC ERROR
• TOUCH DOWN SENSOR
• HOME POS. ERROR
• MATERIAL LOW
Application of the testbox:
• Simulating inputs
• Checking outputs
• Monitoring of drive signals sent by the system control
• Aid for setting up the machine
Notes
The polarity of the testbox is low-active, therefore rules:
Inputs are pulled low when the push-button is pressed.
Outputs are low, when the LED lights.
Summary of Contents for XLP 504
Page 1: ...Edition 9 5 2018 Translation of original version SERVICE MANUAL XLP 504 XLP 506 Label printer ...
Page 2: ......
Page 238: ...Service manual XLP 504 XLP 506 05 2018 06 238 Appendix WIRING DIAGRAMS See next pages ...
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