Index: tst_service_screen/test.py
===================================================================
diff -u -raea720dc4efe66713d2b9a00a7d6a2497dbcaea4 -r6bb43117bca2673c5de877f5b70b094da344418a
--- tst_service_screen/test.py	(.../test.py)	(revision aea720dc4efe66713d2b9a00a7d6a2497dbcaea4)
+++ tst_service_screen/test.py	(.../test.py)	(revision 6bb43117bca2673c5de877f5b70b094da344418a)
@@ -15,7 +15,7 @@
 
 from configuration import config
 from dialin.ui.hd_simulator import HDSimulator
-from dialin.common.hd_defs import HDOpModes, HDOpSubModes
+from dialin.common.hd_defs import HDOpModes, HDStandbyStates
 from dialin.ui import utils
 
 hd_simulator = HDSimulator()
@@ -41,7 +41,7 @@
     return names.o_settings_home_text_obj
 
 
-def text_obj(text):
+def                                              text_obj(text):
     """
         Method to set custom object property for information screen.
         @param text : (string) parameter text
@@ -55,7 +55,7 @@
         Method to navigate to "Settings" screen
     """
     test.startSection("Navigating to 'Service' screen")
-    hd_simulator.cmd_send_hd_operation_mode(op_mode=HDOpModes.MODE_SERV.value, sub_mode=HDOpSubModes.STANDBY_START_STATE.value)
+    hd_simulator.cmd_send_hd_operation_mode(op_mode=HDOpModes.MODE_SERV.value, sub_mode=HDStandbyStates.STANDBY_START_STATE.value)
     utils.waitForGUI(1) 
     device_settings_text = waitForObjectExists(settings_text_obj(config.SERVICE_TEXT))
     test.compare(device_settings_text.text, config.SERVICE_TEXT, "{} screen is displayed".format(config.SERVICE_TEXT))