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i . ______ --__
191
OFFLINE TESTS (CONTINUED
Print Receive Buffers (PRT09)
The print receive buffers test, usually run in transparent
mode, formats and prints the contents of the receive·
buffers until the test is stopped by pressing the Stop
switch.
The purpose of the test is to see what the printer has
received, including data and formatting information, so
that you can compare it with what was sent by the
system.
To run the test in transparent mode, first select
transparent mode (PRT14) and then select PRT09.
Left Margin Recognition (PRT10)
The left margin recognition test senses the location of
the left margin pulse relative to the print emitter pulses.
Left margin recognition testing occurs while the carrier
is moving to the right. The microcode checks for the
left margin signal after each print emitter pulse. When
the left margin signal is sensed, the printer starts
counting print emitter pulses. The count, which is reset
by the E3 pulse, is printed at the left side of the form.
Left Margin
Count Starts
---rC""""""
LJ
.~
}
This timing
would cause
a count of 2.
The location at which the left margin signal is sensed is
indicated by the count as follows:
Count Location
3
Between E3 and E1
2
Between E1 and E2
Between E2 and E3
The best position is indicated by a count of 2 or a
combination of 2 with sometimes a 1 or a 3. This
shows that the left margin pulse is active as far as
possible from the print emitter 3 pulses (between
emitter pulses 1 and 2 is best, during a 1 or 2 pulse is
acceptable).
191
Wiring Diagram,
Dia nostic Aids
To obtain the best location, move plug P2B and repeat
this test. Details of P2B plugging are on the label on
the gray safety cover at the front of the printer
mechanism.
Printer Characteristics Display (PRT11)
The printer characteristics are displayed in control panel
lights 1 through 8. The lights compare to the planar
jumpering that selects the language group and printer
speed.
Lights 1 through 5 identify the language group as
plugged on planar jumper pins
a
through 4 (see 106).
Language Group
A 1 indicates no jumper; a
a
indicates a jumper.
Lights
12345
Country
00000
U.S. and Canada
00001
ASCII (International)
00010
Austria and Germany
00011
Belgium
00100
Brazil
a a
1
a
1
Denmark and Norway
a a
1 1
a
Finland and Sweden
a a
1 1 1
France
01000
Italy
a
1
a a
1
Japan (English)
a
1
a
1
a
. Portugal
a
1 011
Spain
a
1 1 00
Spanish-Speaking
a
1 1
a
1
United Kingdom
01110
Canada (French)
a
1 111
Reserved
10000
Japan (Katakana)
1 000 1
l
to
Reserved
111 1
a
1 1 1 ·1 1
Defaults to U.S. and Canada
Note:
All jumpers must be plugged.
Maintenance
5256 MIM
1-77
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