Read Panasonic FA-A888 Service Manual online
2-2
(2) One-sided original feed
• This operation feeds the original from the original feed tray onto the platen glass.
(During this operation, if an original is already on the platen glass, that original
will exit.)
1) When an original is not on the original timing feed position, original timing
feed operation begins.
2) After 50msec, the transport belt motor begins to rotate normally. (At this time,
JAM timer (3) starts its count to 1225msec.)
3) After 105msec, the original feed motor reverse rotation commences. (At this
time, JAM timer (2) starts its count to 840msec.)
4) When the original arrives at the original exit/reverse sensor within 1225msec
for JAM timer(3), the count is started for JAM timer (5) to 1080msec and the
original reverse motor deceleration pulse.
5) When the count of the original reverse motor deceleration pulse is increased,
the original reverse motor switches from high gear to low gear.
6) When the original passes the original exit/reverse sensor within 1080msec for
JAM timer(5), the original exit motor stop pulse starts its count to 30.
7) When the original reverse motor stop pulse count increases, the original reverse
motor stops.
8) When the original passes the registration sensor within 840msec for JAM
timer(2), the original feed stop pulse of the transport belt motor starts the
count to 187.
9) At the same time, the original feed motor stops.
10) When the rotational pulse of the transport belt motor increases to a
predetermined pulse count, the transport belt motor stops.
11) After 50msec, the transport belt motor reverse rotation begins at a low speed.
12) When the rotational pulse of the transport belt motor increases to 63 pulse
count, the transport belt motor stops. (Only in switch back)
SV029
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