Minolta EP1030 - Troubleshooting Procedures for Malfunctions; C00: Main Drive Motor Failure to Turn

| Code | Description Detection Timing
Lens
drive
malfunction
®
Lens
Home
Position
Sensor
PC12
does
not
go
from
LOW
to
HIGH
even
when
Lens
Drive
Motor
M6
Is
energized
for
750
pulses
for
the
lens
movement
in
the
reduction
direction.
© PC12 does not go from HIGH to LOW even when M5 is
energized for 1400 pulses for the lens movement in the
enlargement direction.
The output from AE Sensor Board PWB-E is 4.8V or more, or
less than 0.4V when the Exposure Lamp is OFF and Scanner
at home position.
ATDC Sensor malfunction | The output from ATDC Sensor UNS is 4.8V or more, or less
CF3
than 0.4V,
EEPROM malfunction Data which must be retained even when power is turned OFF
cannot be written to, and read from, the EEPROM.
IU toner detection failure The output from ATDC Sensor UN3 remains less than 1.0V
during an F8 operation.
| ee | Blown IU fuse detection The IU fuse is not blown during an F8 operation.
failure
AE Sensor malfunction
T-15
115988 TO302A
3-2, Troubleshooting Procedures
1158SBT030201A
1) C00: Main Drive Motor’s Failure to Turn
Relevant Electrical Parts
@ Main Drive Motor (M1) @ Power Supply Unit (PU1)
@ Master Board (PWB-A)
ee”
M1 Rotation {DCOV
I1BOCOBTAA
NY
Does the voltage across PJ4A-4 on PWB-A and GND change Change PWB-A,
from DCS5V to DCOV when the Start key is pressed?
Is the voitage across PJ4A-3 on PWB-A and GND DCOV when YES Change M1.
Power Switch $1 is turned ON?
Is the voltage across PJ4-1 on PU1 and GND DC24V when $1 Change PU1.
is turned ON?
T-16