Ricoh FT5034 Service Manual page 103

PROBLEM
STATUS "2A" 1. 2ND SCANNER HOME POSITION
(2ND SCANNER HOME
POSITION NOT ON) 2. 2ND SCANNER DRIVE SECTION
STATUS "2B" 3. MAIN BOARD MALFUNCTION
(2ND SCANNER HOME
POSITION NOT OFF) 4. 2ND SCANNER MOTOR MALFUNCTION
STATUS "2C" 1. SCANNER MOTOR MALFUNCTION
(HIGH FREQUENCY 2. MAIN BOARD MALFUNCTION
ENCODER OUTPUT)
3. SOURCE POWER MALFUNCTION
STATUS "2D"
(LOW FREQUENCY
ENCODER OUTPUT)
STATUS "31" 1. DRUM THERMISTOR BLOWN
(DRUM THERMISTOR
BLOWN)
STATUS "44" 1. SORTER BIN LOCK
(SORTER CHECK)
STATUS "52" 1. FUSING UNIT INSTALLATION FAILURE
2. THERMOFUSE BLOWN OR NO 24V
3. MAIN BOARD MALFUNCTION
STATUS "53" 1. FUSING THERMISTOR OPEN OR SHORT
(FUSING THERMISTOR 2. FUSING CONTROL BOARD
BLOWN)
3. MAIN BOARD MALFUNCTION
CAUSE
DETECTION MALFUNCTION
MALFUNCTION
(OPTICS CONTROL SECTION)
(OPTICS CONTROL SECTION)
INPUT
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.
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).
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 kΩ, replace the main board.
1. Check the sorter.
2. Remove all the paper from the bins.
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.
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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