Large Paper Deck (42 Ppm: Optional/52 Ppm: Standard) - Kyocera KM-4230 Service Manual

2A3/4

• Large paper deck (42 ppm: optional/52 ppm: standard)

Problem
(1)
The large
paper deck
does not
operate when
the print key
is pressed.
(2)
The deck
paper
conveying
motor does
not operate
(C920).
(3)
Paper deck
motor 1 does
not operate
(C921).
3-6-94
Causes
Incorrect
connection with
the engine PCB.
Poor contact in the
deck paper
conveying motor
connector
terminals.
The deck paper
conveying motor
drive system
overloaded.
Defective deck
main PCB.
Defective deck
paper conveying
motor.
Poor contact in the
paper deck motor
1 connector
terminals.
Broken paper deck
motor 1 coil.
Defective deck
main PCB.
Check procedures/corrective measures
Check the connector.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check the drive system.
Check if the motor drive clock signal is
present at CN12-3 on the deck main PCB
when maintenance item U247 is run. If not,
replace the deck main PCB.
Check if the deck paper conveying motor
rotates while the motor drive clock signal is
present at CN12-3 on the deck main PCB
when maintenance item U247 is run. If not,
replace the deck paper conveying motor.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check for continuity across the coil. If none,
replace paper deck motor 1.
Check if CN7-1 on the deck main PCB goes
low when paper deck motor 1 is turned on
(placing paper on the right cassette lift and
closing the large paper deck will turn paper
deck motor 1 on until deck level switch 1
turns on) while the deck open/closed safety
switch is on and 24 V DC is present at CN1-
4 on the deck main PCB. If not, replace the
deck main PCB.