Sony UP-860 Service Manual page 49

{I] To the end of screen printing and stopping
pe pe ee ae ie i aes ea
1c301-. @
STB | TJ |
1C301-€
COPYING
'€301-@
COPY-STOP
1C301-6) I 1pSec
1C301-@
MS2 (a ge a ae
(C301
© | APPROX. Isec
PM FW
1€301-@ aa
Fig.5-7. End of Screen Printing Timing
Operation
(i) IC102 counts the printing lines and when the specified number of lines have
been printed, it outputs a "H" signal from its IC102-@) to IC201-(3, 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 10102, it sets COPYING "H".
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 IC102.
(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","H") and check that the
Head goes up (IC301-€), @: "H","L"). Then stop the motor.
(IC301-@, @): "H","H").
5-4-3. Mode set
Each screen printing mode cannot be selected during screen printing.
— horas