HP 450c Service Manual - Page 71

Before Performing the Accuracy Calibration - will not cut after plot

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Before Performing the Accuracy Calibration 1 Under normal environmental conditions and on HP Matte Film D/A1Ćsize media, plot a drawing that contains two X" marks nominally positioned 500 mm (19.69 in.) apart. 2 Measure the distance between the centers of the X" marks on the plot. Accuracy calibration is needed if this distance is not 500 mm (19.69 in) 1 mm (0.04 in). If the measured accuracy, media thickness, or environmental conditions vary greatly from the factory standards, recalibrate the Printer by continuing with the following procedure. Performing the Accuracy Calibration 1 Place a sheet of HP Matte Film over the top of the Printer for 10 minutes to let the sheet stabilize to the environmental conditions. Use a sheet of approximate size A1 or D. You must use HP Matte Film. Otherwise the optical sensor on the carriage will be calibrated incorrectly, and the Printer will have problems loading some types of media. 2 Enter into Service Mode 2, by powering ON the Printer while holding down the Media Source key. 3 Set the Media Type on the front panel to Coated Paper. 4 Load the film, with the matte (dull) side down, in portrait orientation into the Printer. 5 When the Ready LED lights up, press Reprint key. The Ready LED begins to flash and the Printer takes several minutes to plot the calibration plot (see Figure 1). The Printer ejects the sheet, and the Load Media LED lights up. 6 Unload the sheet. 7 Wait until the ink on the sheet is dry. 8 Cut the sheet along the dotted line and reload the sheet facedown into the Printer, in the direction indicated by the arrows on the calibration plot (see Figure 2). The Ready LED begins to flash. The Printer takes less than 10 minutes to: read the calibration sheet; calculate the calibration data; save the data in the EEROM; and eject the sheet. 9 Unload the sheet. Service Calibrations HP DesignJet 430, 450C and 455CA Printers 5-3

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Service Calibrations
5-3
HP DesignJet 430, 450C and 455CA Printers
Before Performing the Accuracy Calibration
1
Unde, no,mal en0i,onmen.al condi.ion- and on HP Ma..e Film D/A1Ć-ize
media± plo. a d,a²ing .ha. con.ain- .²o ³X" ma,k- nominall2 po-i.ioned
5´´ mm (19µ69 inµ) apa,.µ
2
Mea-¶,e .he di-.ance be.²een .he cen.e,- of .he ³X" ma,k- on .he plo.µ
Accuracy calibration is needed if this distance is not 500 mm (19.69 in)
±
1 mm (0.04 in).
If the measured accuracy, media thickness, or environmental conditions
vary greatly from the factory standards, recalibrate the Printer by
continuing with the following procedure.
Performing the Accuracy Calibration
1
Place a -hee. of HP Ma..e Film o0e, .he .op of .he P,in.e, fo, 1´ min¶.e-
.o le. .he -hee. -.abilize .o .he en0i,onmen.al condi.ion-µ
Use a sheet of approximate size A1 or D.
You must use HP Matte Film.
Otherwise the optical sensor on the
carriage will be calibrated incorrectly, and the Printer will have
problems loading some types of media.
2
En.e, in.o
Service Mode 2
± b2 po²e,ing ON .he P,in.e, ²hile holding
do²n .he
Media Source
ke2µ
3
Se. .he
Media Type
on .he f,on. panel .o
Coated Paper
µ
4
Load .he film± ²i.h .he ma..e (d¶ll) -ide do²n± in po,.,ai. o,ien.a.ion in.o
.he P,in.e,µ
5
When .he
Ready
LED ligh.- ¶p± p,e--
Reprint
ke2
.
The
Ready
LED begins to flash and the Printer takes several minutes to
plot the calibration plot (see Figure 1). The Printer ejects the sheet, and the
Load Media
LED lights up.
6
Unload .he -hee.µ
7
Wai. ¶n.il .he ink on .he -hee. i- d,2µ
8
C¶. .he -hee. along .he do..ed line and ,eload .he -hee.
facedown
in.o
.he P,in.e,± in .he di,ec.ion indica.ed b2 .he a,,o²- on .he calib,a.ion plo.
(-ee Fig¶,e ·)µ
The
Ready
LED begins to flash. The Printer takes less than 10
minutes to: read the calibration sheet; calculate the calibration data;
save the data in the EEROM; and eject the sheet.
9
Unload .he -hee.µ