6-7
UP-D70/D70A (UC,CE)
e) Printing operation is done, but nothing is printed.
Poor connection
of harness.
Check IC110 and
IC101 on SY-270 Board.
(Check V cont. )
YES
Is the harness inserted
to head correctly ?
Check CN201 A-
on FMY-15 Board.
Is power supply head
connector
through
more
than 17 V ?
When pulling
FMY-15 Board out, using only
IF-610 Board, is test pattern
printing normal?
NO
YES
YES
NO
Is CN10 on SY-270 Board
more than 1.5 V?
Check Power
Supply.
YES
NO
NO
When pulling
IF-610 Board out, using only
FMY-15 Board, is test pattern
printing normal?
YES
Check CN101 , ,
on IF-610 Board.
Check head control block on
SY-270 Board refferring to timing
chart of SY-270 and MEC-11 Boards
operation description.
NO
4
6
15
12
15
13
8
Check D/A
converter and CPU.
