Service Manuals, User Guides, Schematic Diagrams or docs for : Minolta Copiers EP1054 orig_man Troubleshooting
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FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
98.05.15
EP1054/EP1085/EP2030
TROUBLESHOOTING
10794
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
I I
98.05.15
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CONTENTS
*Only when options are used
1.INTRODUCTION ............................................................................................. T-l
l - l . General Precautions ................................................................................ T-l
l-2. How to Use This Book ............................................................................. T-l
l-3. Reading the Text ..................................................................................... T-l
2. I/O PORT CHECK ........................................................................................... T-2
2-l . Controlled Parts Check Procedure .......................................................... T-2
2-2. Port Check List ........................................................................................ T-3
3. PAPER TRANSPORT FAILURE ..................................................................... T-l 1
3-l. Paper Misfeed .......................................................................................... T-11
3-2. Misfeed Detected Types and Detection Timings ..................................... T-l 3
3-3. Misfeed Clearing Procedures .................................................................. T-15
(1) Copier Take-Up Misfeed ................................................................. T-l 5
(2) PF-206 Take-Up Misfeed (23 cpm Copier) ...................................... T-18
(3) PF-112 Take-Up Misfeed (23 cpm Copier) ...................................... T-20
(4) Bypass Port Misfeed ........................................................................ T-22
(5) Transport/Separator Misfeed ........................................................... T-24
(6) Fusing/Exit Misfeed ......................................................................... T-26
(7) Duplex Unit Vertical Transport/Storage Misfeed (23 cpm Copier) . ..T-2 8
(8) Duplex Unit Take-Up Misfeed (23 cpm Copier) ............................... T-31
4. MALFUNCTIONS ............................................................................................ T-33
4-l. Self-Diagnostic Function .......................................................................... T-33
4-2. Troubleshooting Procedures .................................................................... T-39
(1) COOOO: Main Drive Motors failure to turn
COO01 : Main Drive Motor turning at abnormal timing ...................... T-39
(2) COOlO: PC Drive Motors failure to turn
COO1 1: PC Drive Motor turning at abnormal timing ......................... T-40
(3) COO4C: Cooling Fan Motors failure to turn ..................................... T-41
(4) COO70: Toner Replenishing Motors failure to turn
CO071: Toner Replenishing Motor turning at abnormal timing ...... ..T-4 2
(5) CO400: Exposure Lamps failure to turn ON
CO41 0: Exposure Lamp turning ON at abnormal timing .................. T-43
(6) CO500: Warm-up failure
CO51 0: Abnormally low fusing temperature
CO520: Abnormally high fusing temperature ................................... T-45
(7) CO600: Scanner Motor malfunction
CO61 0: Lens Motor malfunction
CO620: Mirror Motor malfunction ..................................................... T-47
(8) CO900: 3rd Drawer Paper Lift-Up Sensor malfunction
CO904: 3rd Drawer Paper Lift-Up Motor malfunction
CO950: 4th Drawer Paper Lift-Up Sensor malfunction
C0954: 4th Drawer Paper Lift-Up Motor malfunction ....................... T-49
(9) CO990: Main Tray Upward Motion Failure
CO991: Main Tray Downward Motion Failure
C0992: Main Tray Downward Motion Failure
C0993: Main Tray Upward Motion Failure
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FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
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98.0515
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C0994: Main Tray Elevator M26s Failure to Turn . . . . . . . . . . . . . . . . . . . . . . . . . . . T-51
(10) C0998: Shifter Transfer Failure
CO999: Shifter Return Failure
C099A: Shifter Return Failure
C099b: Shifter Transfer Failure
CO99c: Shifter Motor M27s Failure to Turn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-53
(11) C099E: Shift Gate Position Detecting Failure
CO99F: Shift Gate Position Detecting Failure
C0996: 3rd Drawer Lock Release Failure
COF79: Paper Empty Sensor Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-55
(12) COdOO: Duplex Unit Front/Rear Edge Guide Plates home position
..........................................................................................................
detection failure
COd20: Duplex Unit Trailing Gate Unit home position detection failure
COd50: Duplex Unit Drive Motors failure to turn
COd51: Duplex Unit Drive Motor turning at abnormal timing . . . . . . . . . ..T-57
(13) COFl 0: Faulty AE Sensor level
COF30: ATDC Sensor malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-59
(14) COF02: Original size detection error (Defective CPU)
COFE2 to COFFE: Original Size Detecting Sensor failure . . . . . . . . . . . . . . . T-60
(15) Power is not Turned ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-61
(16) El, E2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-63
5. IMAGE FAILURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T-64
5-l. Image Failure Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T-64
5-2. Initial Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .T-64
5-3. Troubleshooting Procedures Classified by Image Failures . . . . . . . . . . . . . . . . . . . . . T-65
(1) Blank copy ....................................................................................... T-66
(2) Black copy ....................................................................................... T-66
(3) Low Image Density .......................................................................... T-67
(4) Foggy background ........................................................................... T-68
(5) Black Streaks or Bands ................................................................... T-69
(6) Black Spots ...................................................................................... T-69
(7) Blank Streaks or Bands ................................................................... T-70
(8) Void Areas ....................................................................................... T-71
(9) Smear on Back ................................................................................ T-7 1
ii
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FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
98.05.15
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.
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 the wall outlet of
the same line, take necessary steps to prevent the circuit breaker from opening due to
overloads.
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 procedure 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. Is ...? YES Do this.
1
2 Go to step 2 if it checks okay. NO Check that.
Go to step 2 if it
2
checks okay.
T-1
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
98.05.15
2 I/O PORT 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 of the data of the I/
O port on 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 a signal is
properly input to, and output from, a controlled part.
1. When a paper misfeed or malfunction occurs, identify the I/O port of the possibly defec-
tive controlled part by reviewing the text or I/O port check list.
2. Select the I/O Check function of the Service mode and show on the Touch Panel the
status of the I/O port identified in step 1.
3. Check the input or output port data to determine whether the controlled part is opera-
tional and signals are properly input and output.
Example
When a paper misfeed occurs in the paper take-up section of the copier, 1st Drawer Paper
Take-Up Sensor PC55 is considered to be responsible for it.
1. Remove the sheet of paper misfed.
2. From the I/O port check list, it is found that the H/L input signal to PC55 is supplied from
PWB-A (IC4A) APA1.
3. Select the I/O Check function from the Service mode menu and, using the Paper Select
key, show the status of PWB-A (IC4A) APA1 on the control panel.
4. Check that the second LED from the right of the Exposure Level Display lights up (sen-
sor being unblocked).
XAPA
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