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FrameMaker Ver.5.5E(PC) Di250 TROUBLESHOOTING
99.01.08

Di250

TROUBLESHOOTING

14413
FrameMaker Ver.5.5E(PC) Di250 TROUBLESHOOTING
99.01.08

CONTENTS
1. INTRODUCTION ............................................................................................. T-1
1-1. General Precautions ................................................................................ T-1
1-2. How to Use This Book ............................................................................. T-1
1-3. Reading the Text ..................................................................................... T-1
2. I/O CHECK ...................................................................................................... T-2
2-1. Controlled Parts Check Procedure .......................................................... T-2
2-2. I/O Check List .......................................................................................... T-3
3. PAPER TRANSPORT FAILURE ..................................................................... T-8
3-1. Paper Misfeed .......................................................................................... T-8
3-2. Size Error ................................................................................................. T-10
3-3. Misfeed Detection Sensor Layout ............................................................ T-11
3-4. Types of Misfeed Detection and Detection Timings ................................ T-12
3-5. Misfeed Troubleshooting Procedures ...................................................... T-14
(1) Copier Take-Up Misfeed .................................................................. T-14
(2) Manual Bypass Take-Up Misfeed .................................................... T-16
(3) Separator/Fusing Misfeed ............................................................... T-18
(4) Paper Take-Up/Transport Misfeed (PF-108/PF-110) ...................... T-20
(5) Paper Take-Up/Transport Misfeed (PF-106) ................................... T-22
(6) Duplex Turnover/Take-Up Misfeed (AD-10) .................................... T-25
4. MALFUNCTION ............................................................................................... T-27
4-1. Detection Timing by Malfunction Code .................................................... T-27
4-2. Troubleshooting Procedures by Malfunction Code .................................. T-30
(1) C0000: M2 Malfunction
C0010: M1 Malfunction
C0045: M3 Malfunction
C004C: M8 Malfunction
C004E: M4 Malfunction
C0070: M6 Malfunction .................................................................... T-30
(2) C0500: Warming-up Failure
C0510: Abnormally Low Fusing Temperature
C0520: Abnormally High Fusing Temperature ................................ T-33
(3) C0650: Faulty PC12
C0651: Faulty PC13 ........................................................................ T-35
(4) C0990: EMOT Malfunction
C0991: Lift 1 Ascent Motion Failure
C0995: HMOT Malfunction
C0999: Lift 2 Ascent Motion Failure
C099D: Communications Error ........................................................ T-37
(5) C0F32: Faulty E1
C0F33: ATDC Adjustment Failure ................................................... T-40
(6) C10VV to C13VV ............................................................................. T-41
(7) The Copier Does not Turn ON. ........................................................ T-42
5. IMAGE FAILURE ............................................................................................. T-43
5-1. Image Failure Troubleshooting ................................................................ T-43
5-2. Initial Checks ........................................................................................... T-43
5-3. Troubleshooting Procedures by Image Failure ........................................ T-45

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FrameMaker Ver.5.5E(PC) Di250 TROUBLESHOOTING
99.01.08

(1) Blank Copy ...................................................................................... T-46
(2) Black Copy ...................................................................................... T-46
(3) Low Image Density .......................................................................... T-47
(4) Foggy Background .......................................................................... T-48
(5) Black Streaks or Bands ................................................................... T-49
(6) Black Spots ...................................................................................... T-49
(7) Blank Streaks or Bands ................................................................... T-50
(8) Void Areas ....................................................................................... T-50
(9) Smear on Back ................................................................................ T-51
(10) Uneven Image Density .................................................................... T-51
(11) Gradation Reproduction Failure ...................................................... T-51
(12) Rough Image ................................................................................... T-52
(13) Periodically Uneven Image .............................................................. T-52

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FrameMaker Ver.5.5E(PC) Di250 TROUBLESHOOTING
99.01.08

1 INTRODUCTION

1-1. General Precautions
1. When servicing the copier with its covers removed, use utmost care to prevent your
hands, clothing, and tools from being caught in revolving parts including the chains and
gears. When servicing the copier with the Rear Cover removed, be sure to fit the inter-
lock switch actuating jig in position.
2. Before attempting to replace parts and unplug connectors, make sure that the power
cord of the copier has been unplugged from the wall outlet.
3. Never create a closed circuit across connector pins except those specified in the text
and on the printed circuit.
4. When creating a closed circuit and measuring a voltage across connector pins speci-
fied in the text, be sure to use the green wire (GND).
5. When the user is using a word processor or personal computer from a wall outlet of the
same line, take necessary steps to prevent the circuit breaker from opening due to over-
loads.
6. Keep all disassembled parts in good order and keep tools under control so that none
will be lost or damaged.

1-2. How to Use This Book
1. If a component on a PWB or any other functional unit including a motor is defective, the
text only instructs you to replace the whole PWB or functional unit and does not give
troubleshooting procedures applicable within the defective unit.
2. All troubleshooting procedures contained herein assume that there are no breaks in the
harnesses and cords and all connectors are plugged into the right positions.
3. For the removal procedures of covers and parts, see DIS/REASSEMBLY, ADJUST-
MENT.
4. The troubleshooting procedures are given in the order of greater frequency of trouble or
order of operation.
5. The procedures preclude possible malfunctions due to noise and other external causes.

1-3. Reading the Text
1. The paper transport failure troubleshooting procedures are given according to the
symptom. First identify the location where the paper is present and start the procedure
for that particular location. For malfunction troubleshooting, start with step 1 and
onward.
2. Make checks in numerical order of steps and, if an item is checked okay, go to the next
step.

Pattern 1 Pattern 2
Step Check Item Result Action Step Check Item Result Action
1 Is--? YES Do this. YES Do this.
1 Is--?
2 NO Check that.
Go to step 2 if you answered No. 2
Go to step 2 if it checks okay.

T-1
FrameMaker Ver.5.5E(PC) Di250 TROUBLESHOOTING
99.01.08

2 I/O CHECK

2-1. Controlled Parts Check Procedure

To allow the Tech. Rep. to easily and safely determine whether a particular controlled part
is fully operational, this copier provides the following provision: checking the data of the
input port of the board IC with the copier in the standby state (including a misfeed, malfunc-
tion, and closure failure condition) allows the Tech. Rep. to determine whether signals are
properly input to a controlled part.

1. When a misfeed or malfunction occurs, locate on a circuit diagram accompanying the
text the controlled part which is probably defective.
2. Select "I/O Check" from the Tech. Rep. Mode menu screen and then access the screen
which contains the controlled part picked out in step 1 above. (See SWITCHES ON
PWBs/TECH. REP. MODE.)
3. Check the input port data to determine if a signal is probably input to the controlled part.

Example
When a paper misfeed occurs in the paper take-up section of the copier, Synchronizing
Roller Sensor PC2 is considered to be responsible for it.

1. Remove the sheet of paper misfed.
2. From the I/O Check list, it is found that the signal input to PC2 is "Timing Roller."
3. Select "I/O Check" from Tech. Rep. Mode and then "Printer." Now, access the screen
that contains "Timing Roller."
4. Check that the input port data of "Timing Roller" is "0" (sensor is blocked).
5. Move the PC2 actuator to unblock the sensor.
6. Check at this time that the input port data on the screen changes from "0" to "1."

1: PC2 is operational. 0: PC2 is faulty.

T-2
FrameMaker Ver.5.5E(PC) Di250 TROUBLESHOOTING
99.01.08

2-2. I/O Check List