Sony UP-890CE Service Manual page 46

[WM] To the end of screen printing and stopping
pation i ee a
1c301-@
STB ae eee eee '
1C301-©
COPYING
1C301-@
COPY-STOP |
1C301-@ I 1pSec
1C301-@
Ms2 —-
1C301-@
| APPROX. lIsec
PM FW
1C301-@ ea a ee ee ee
Fig.5-7. End of Screen Printing Timing
Operation
(i) IC103 counts the printing lines and when the specified number of lines have
been printed, it outputs a "H" signal from its 1C103-@ to IC301-@, which
tells IC301 that the printing operation has ended and it outputs the COPY-
STOP pulse.
*Note: The COPY-STOP pulse is also output even if COPYNING is "L", if IC
301 judges that something abnormal has arisen. In such a case, when this
COPY-STOP pulse is input to IC103, it sets COPYING "II".
This characteristic can be used to analyze any problem that causes
printing to stop. If COPY-STOP was issued while COPYING is "L", the
cause is related to IC301 screen printint is then stopped. If COPY-STOP
was issued while COPYING is "H", the cause is related to IC103.
(ii) After the COPY-STOP pulse, MS1, MS2 are changed to fast forward for about
1 second, then PM FW is set "H" to stop.
Reverse the Head U/D motor (IC301-©, @: "L","If") and check that the
Head goes up (1C301-69, @: "II","L"). Then stop the motor.
(1C301-@, @: "H","H").
5-4-3. Mode set
No. 1 through 4, 6 through 10 of DIP switch S302 on the rear panel are input to
1C301 to select each screen printing mode. The mode set is input from 1C301-@
to IC103-@0 in serial data format when the PRINT key and COPY key are pressed.
Each screen printing mode cannot be selected during screen printing.
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