Advertisement
6-2
9825A B Adjustments
9825A/B System Clock Frequency Adjustment
CAUTION
THE CLOCK IS SET AT THE FACTORY; IT IS NOT NORMALLY
ADJUSTED IN THE FIELD. IT IS NOT TO BE ADJUSTED INDIS-
CRIMINATELY. IF THE CLOCK FREQUENCY EXCEEDS ITS
TOLERANCE. ERRATIC OPERA nON PRODUCING RANDOM
ERRORS COULD RESULT.
The following tools are needed for adjusting the system clock:
Alignment tool.
Frequency counter.
l. Measure the clock frequency at the "01" test point using the counter.
2. Adjust the clock frequency to 6.0 MHZ plus or minus 0.1 MHZ.
Note
If a counter is not available, key in and run this program:
0:
dsp I;
wait
10780; beep;
JMP
(1+10->1)=60
1:
beep;
IAlait
100; beep; dsp "DONE'"
end
This program will beep every 10 seconds if clock frequency is 6.0 MHZ. The double beep
should occur at 60 seconds, plus or minus 1 second.
9825A1B Printer Adjustments
The folloWing tools are needed for printer adjustments:
1 Printhead Alignment Fixture
2 Printhead Alignment Tool
1 1116 inch hex wrench
1 Adjustment Gage. ··GO··
1 Adjustment Gage, "NO-GO"
1 Small bottle of enamel paint
1 1/8 inch flat tip screwdriver
9825A/B
Print Head Alignment:
98240-67901
8710-0693
8750-0350
8750-0351
Install printer on alignment fixture. load paper in printer.
2. Loosen set screws with 116" hex wrench.
3. Turn on 9825 and fixture. insert alignment tools in holes.
4. Adjust print head until print across paper is darkest and even.
5. Turn off fixture and tighten set screws. don't overtighten.
6. Turn on fixture and verify print quality.
Advertisement
