Filter
Top Products
6-13
FS-1010
Ye s
Ye s
No
No
No
No
No
Connect oscilloscope to
pin 4 (OUTPEN) of
YC07 on main board
(KP-888).
Turn power switch off,
then on.
Turn power switch off,
then on.
Turn power switch on.
+5 V DC at pin 6 of
YC07 on main board
(KP-888) ?
Does
pin 4 (OUTPEN) of
YC06 on main board (KP-
888) goes high, then low
before "4200"
error?
Does pin 8
(PDN) of YC06 on
main board (KP-888) output
pulse signal*, within 0.1 second
after pin 4 (OUTPEN) goes
high, then
low?
Call service
4200:nnnnnn
Replace harness (S02770)
between main board and
engine board.
Ye s
Replace main board
(KP-888). See page 5-12.
Replace main board
(KP-888). See page 5-12.
Connect oscilloscope to
pin 4 (OUTPEN) and
pin 8 (PDN) of YC07 on
main board (KP-888).
OK?
Ye s
Ye s
Turn power switch on.
OK?
End.
End.
Replace engine board
(KP-882). See page 5-11.
B
C
Continued
to next page.
Continued
to next page.
*: Pin photo diode
detect horizontal
synchronization signal
(Frequency: 1417 Hz,
Low level width: 10 µs)
Printer indicators
(3) 4200 - Laser scanner unit [Pin photo diode] error