Ricoh FT5034, Service Manual

Page: 103 / 139

PROBLEM CAUSE ACTION
STATUS "2A"
(2ND SCANNER HOME
POSITION NOT ON)
STATUS "2B"
(2ND SCANNER HOME
POSITION NOT OFF)
1. 2ND SCANNER HOME POSITION
DETECTION MALFUNCTION
2. 2ND SCANNER DRIVE SECTION
MALFUNCTION
3. MAIN BOARD MALFUNCTION
(OPTICS CONTROL SECTION)
4. 2ND SCANNER MOTOR MALFUNCTION 1. Check if the 2nd scanner is moving properly.
Moving properly
Check CN403-6 on the main board.
:When 2nd Scanner Motor is OFF
→
more than 4.5V
: Reduction and Enlargement
→
Full Size
→
0V (for a time)
If the voltage is correct, replace the main board.
If it is not, replace the 2nd scanner home position sensor.
Not moving properly
Check the 2nd scanner drive section.
Replace the main board.
Replace the 2nd scanner motor.
STATUS "2C"
(HIGH FREQUENCY
ENCODER OUTPUT)
STATUS "2D"
(LOW FREQUENCY
ENCODER OUTPUT)
1. SCANNER MOTOR MALFUNCTION
2. MAIN BOARD MALFUNCTION
(OPTICS CONTROL SECTION)
3. SOURCE POWER MALFUNCTION 1. Check the encoder output of the scanner motor.
If it is malfunctioning, replace the scanner motor.
2. Replace the main board.
3. Check the voltage of the power source (wall outlet).
STATUS "31"
(DRUM THERMISTOR
BLOWN) 1. DRUM THERMISTOR BLOWN 1. Check the resistance of the drum thermistor at room temperature.
If the resistance is
∞Ω
, the drum thermistor is open.
If the resistance is around 8 k
Ω
, replace the main board.
STATUS "44"
(SORTER CHECK) 1. SORTER BIN LOCK 1. Check the sorter.
2. Remove all the paper from the bins.
STATUS "52" 1. FUSING UNIT INSTALLATION FAILURE
2. THERMOFUSE BLOWN OR NO 24V
INPUT
3. MAIN BOARD MALFUNCTION 1. Check that the fusing unit is installed properly.
2. Check the voltage at CN102-B13 on the main board.
24V
→
Replace the main board.
0V
→
Check the thermofuse or fusing thermistor.
STATUS "53"
(FUSING THERMISTOR
BLOWN) 1. FUSING THERMISTOR OPEN OR SHORT
2. FUSING CONTROL BOARD
MALFUNCTION
3. MAIN BOARD MALFUNCTION 1. Check the voltage at CN101-B16 on the main board.
5V
→
Replace the main board.
0V
→
Check the fusing thermistor.
→
If it is all right, replace the fusing control board.
→
If it is not, replace the thermistor.
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