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Problem Resolution
Monitor Test: This test is used to determine if the HP OfficeJet Series 300 is sensing a false
calling CNG tone, which would cause the unit to interrupt a voice call while in
Fax/TAM receive mode. Two modes are available in this test, On-hook and
Off-hook monitor tests. Pressing the left arrow (A) button will toggle between
the two monitor modes.The Off-hook monitor mode simply detects the
presence of a dial tone. The On-hook monitor mode detects the presence of a
ring and calling (CNG) tone. The number of rings detected as well as the ring
frequency is displayed when the HP OfficeJet Series 300 is called. If a telephone
handset or answering machineanswers the call, the number of CNG tones
detected is displayed. Pressing the Stop button will exit the test.
LIU Test: This test will check the following line interface unit functions:
1. LIU identification
2. LIU inputs
3. LIU outputs
The LIU identification includes the country-specific option and LIU revision
level. LIU codes and their associated country assignments are as follows:
LIU Code
Country LIU Code Country
15 USA 23 Australia
47 France 39 Germany
35 Netherlands 31 United Kingdom
25 India 4 Korea
6 China
The LIU inputs detected are defines as follows:
rdt ring detect will toggle between “Y/N” during an incoming call
tlp Telsep loop current will display “N” if the attached handset is
On-hook and “Y” if it is Off-hook
mlp Modem loop current is for Europe only and will display “Y” for
Off-hook and “N” for On-hook
The LIU outputs detected are defined as follows:
ex press the 1 button to activate the exclusion relay which is the
main Off-hook relay
pu press the 2 button to activate the pulse dial relay which is used for
pulse dialing
sh press the 3 button to activate the shunt relay (used only in
Europe)
gr press the 4 button to activate the ground start relay (used for
German PBX systems)
Tel Test: Tests the dialing capability of the HP OfficeJet Series 300 without having to use
the Fax portion of the mechanism.
Bench Run Test: Allows testing of the HP OfficeJet Series 300 in unattended mode. Paper must
be loaded in the input tray and up to twenty documents should be loaded in the
automatic document feeder. Both printing and scanning functions are exercised.
The two bench run optionsavailable are:
1. Extended Bench Run – allows you to select how long to perform the bench
run test
2. Start std Bench Run – (standard test) runs through 120 cycles of the bench run
test
Note: The only way to exit the bench run test is to power the unit OFF.