Adf - Gestetner A294 Service Manual

Symbol Name
Laser
SD1 Synchronization
Detector
TC1 Total Counter
Fusing Thermofuse
TF1
TH1 Fusing Thermistor

1.7.2 ADF

Symbol Name
Motors
M1 Pick-up
Feed-in
M2
M3 Transport Belt
M4 Feed-out
M5 Bottom Plate
Sensors
APS Start
S1
S2 DF Position
Original Set
S3
Bottom Plate HP
S4
Bottom Plate
S5
Position
Pick-up Roller HP
S6
Entrance
S7
Registration
S8
S9 Original Width 1
S10 Original Width 2
SM
CÓPIA NÃO CONTROLADA
ELECTRICAL COMPONENT DESCRIPTIONS
Detects the laser beam at the start of the main scan.
Counts the number of copies.
Opens the fusing lamp circuit if the fusing unit
overheats.
Detects the temperature of the hot roller.
Moves the pick-up roller up and down.
Drives the feed belt, and the separation,
pick-up, and transport rollers.
Drives the transport belt.
Drives the exit and inverter rollers.
Moves the bottom plate up and down.
Informs the CPU when the DF is opened
and closed (for platen mode) so that the
original size sensors in the copier can
check the original size.
Detects whether the DF is lifted or not.
Detects whether an original is on the
table.
Detects whether the bottom plate is in
the down position or not.
Detects when the original is at the correct
position for feeding.
Detects whether the pick-up roller is up
or not.
Detects when to restart the pick-up motor
to lift up the pick-up roller, detects when
to change the feed motor direction,
detects the trailing edge of the original to
finish checking the original length, and
checks for misfeeds.
Detects the leading edge of the original
to check the original length, detects when
to stop the original on the exposure
glass, and checks for misfeeds.
Detects the original width.
Detects the original width.
1-19
CÓPIA NÃO CONTROLADA
Function
Function Index No.
3
8
9
14
7
12
13
19
20
4
2
26
21
22
23
A294/A295