aa" ._...
.._.
--- ~-
'--'
......
-
---r--t- ....- _...
i
!
(An adjustment example)
When Vp is 6.2V under the room temperature of lO°C.
It
should
be
adjusted to T
=
17.3µS, according to the
above graph.
•
In case the frequency counter is used
Frequency counter
may
be
used instead of the
oscilloscope. In this case, connect the frequency
counter to the CLOCK CHECK terminal and adjust
the VR so that 'it should
be
the frequency range
shown in the above graph.
Step 4.
Have the printer worked to check the aetual print
density. Among other things, let the capital
"I"
printed
and ensure that there is no vertical dot omission.
Step 5.
After the check of the print result, remove the solder
oAe
TESTJ terminal (Step (1)) aod replace the
ca.et
back in the unit with care not to seize any lead
wire with the cabinet.
I
CE·129P OFF CURRENT CHECK
I
t ,
Operate the paper feed key when a computer is not
connected to the CE-129P, and check if paper feed
operation (ON,.OFF) is executed normally.
2. Supply -5.0V from stabilized
oe
power supply to Vp
fine. (GND
=
OV: standard).
3. Measure the current on Vp line when the power switch is
OFF. If it is 20µA or less, it may
be
recognized !hat the
used power while the power supply is OFF is normal.
I
Current check during. printing
I .
t.
Connect a computer to the CE-129P circuit.
2. Supply -5.0V from stabilized
oe
power supply tp Vp
line. (GND
=
OV;standard).
3. Set the power switches in the computer and the CE-
129P to ON to execute check program 1.
(IDEE
[Ä))
N
::z::
..
~
>
o
z
w
~
o
w
a:
u.
-6-
-
CE-l29P
-
Print sampIe -
444444444444444444444444
444444444444444444444444
444444444444444444444444
444444444444444444444444
444444444444444444444444
- Check.program 1 -
100:·A
Y
FOR 1=1 TO 5
110:LPRINT
9444444'44444
444444444444"
120:NEXT I
130:.END
4. Measure the current on
the
Vp line in printing, if it is
SOOmA or less,
it
may
be
recognized that the used
power during printing is normal.
I
Low battery detection circuit
I
A circuit constant is defined so that low battery detec-
tion may
be
executed when Vp voltage is -3.8V or less.
When checkprogram is executed after applying -3_8V to
the Vp line, if display of ERROR 8 appears on the eom-
puter display without printer operation, it may
be
reC09nized that the low battery detection
circuit is
narmal.
I
Chraetar printing grade check
I
Check the printing
grade
by executing the check pro-
gram 2. (~
IJ)
.
- Print sampie -
!YU$%&'()*+,-./012345678
9:;(=)?@ABCDEFGHIJKLMNOP
QRSTUYWXVZ[~]"-
- Oleck. program 2 -
200:
Y
:8"
210:LPRIHT Y!Y;CHRS
34;Y
U$%&Y;CHR$ 39;Y()*+,
-./012345678
Y
220:LPRINT Y9:;(=)?@ABCD
EFGH I .JKU1HOP
Y
230:LPRIHT YQRSTUVWXYZ
Y
;
CHRf 91;CHRf 92;CHR$
93;""";CHR$ 95
240:END
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