Minolta Di251, Руководство по обслуживанию

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FrameMaker Ver.5.5(PC) Di251/Di351 TROUBLESHOOTING
05.03.01
T-1
1. INTRODUCTION
1-1. 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 the numerical order of steps and, if an item is checked okay, go to the
next step.
2. I/O CHECK
2-1. Electrical Components Check Procedure
To allow the Tech. Rep. to easily and safely determine whether a particular electrical com-
ponent 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, mal-
function, and closure failure condition) allows the Tech. Rep. to determine whether signals
are properly input to an electrical component.
<Procedure>
1. When a misfeed or malfunction occurs, identify on the circuit diagram accompanying
the text the electrical component that is probably responsible for the problem.
2. Select “I/O Check” from the “Tech. Rep. Mode” menu. Then, select the screen that con-
tains the electrical component picked out in step 1 above. (See “Tech. Rep. Mode” con-
tained in SWITCHES ON PWBs, TECH. REP. SETTINGS.)
3. Check the input data to determine if the signal is correctly input.
<Electrical Component Check Procedure Through Checking Input Data>
Example
When a paper misfeed occurs in the paper take-up section of the copier, the Synchronizing
Roller Sensor is considered to be responsible for it.
<Procedure>
1. Remove the sheet of paper misfed.
2. From the I/O Check list, it is found that the signal input to the Synchronizing Roller Sen-
sor 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 Synchronizing Roller Sensor actuator to unblock the sensor.
6. Check at this time that the input port data on the screen changes from “0” to “1.”
1: Synchronizing Roller Sensor is operational. 0: Synchronizing Roller Sensor is faulty.
Pattern 1
Go to step 2 if you answered No.
Step Check Result Action
1 ~ YES ~
2
Pattern 2
Go to step 2 if it checks okay.
Step Check Result Action
1 ~ YES ~
NO ~
2