Minolta EP4000, Общий, Механический/Электрический

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Interleaf EP5000/EP4000 TROUBLESHOOTING
97.04.01
T-1
1139SBT0100A
INTRODUCTION 1
1139SBT0101A
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 Lower Rear Cover removed, be sure to install the jig.
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 specified 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 overloads.
6. Keep all disassembled parts in good order and keep tools under control so that none will be lost or dam-
aged.
1139SBT0102A
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, ADJUSTMENT.
4. The troubleshooting procedures are given in the order of greater frequency of trouble or order of opera-
tion.
5. The procedures preclude possible malfunctions due to noise and other external causes.
1139SBT0103A
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.
↑
↑
Check Item Step Result Action
1
2
Is...? YES Do this.
Go to step 2 if you answered NO.
Pattern 1 Pattern 2
Check Item Step Result Action
1
2
Is...? YES
Do this.
NO Check that.
Go to step 2 if it checks okay.