Service manual

7020
SOLUTION:
CAUSE: The write unit has failed.
SOLUTION: Replace the write unit (p/n 26NA-6501).
USAGE:
22
Unable to access the 25, 36, or 47 diagnostic mode to clear a failure code. The green data
light is lit at power up.
DESCRIPTION: SOLUTION ID:
99355
SOLUTION:
CAUSE: The FK101 fax kit, or IP unit is blocking access to the diagnostics mode.
SOLUTION: To gain access to the diagnostic modes, perform the following:
1. Power the copier OFF.
2. Isolate both the FK101 fax kit and IP unit from the copier.
3. Access the desired diagnostic mode by (powering the copier on, while pressing the 2 and 5
keys, 3 and 6 keys, or 4 and 7 keys).
4. After clearing the failure code, power the copier OFF.
5. Reinstall the FK101 fax unit and the IP unit on the copier.
USAGE:
22
F28-3 during copy process.DESCRIPTION: SOLUTION ID:
128954
SOLUTION:
CAUSE: Internal arcing within the T/S high voltage casing attached to the right side door, resulting
in loss of separation current to the T/S corona unit.
SOLUTION: To check the T/S high voltage casing for signs of arcing, perform the following:
1. Power the copier OFF.
2. Open the right side door (p/n 26NA50010).
3. Remover the two (2) screws (p/n 00Z193061), which attach the high voltage casing/A to the
right door.
4. Remove one (1) screw (p/n 00Z193061) from the upper shaft holder (p/n 26NA50630), which
will allow the claw shaft to be moved and permit removal of the high voltage casing from the right
side door.
5. Separate casing/B (p/n 26NA50532) from casing/A. Inspect the entire assembly for any signs of
arcing. Replace the insulating sheet (p/n 26NA50971), high voltage fixed parts (p/n 26NA50950),
high voltage part upper (p/n 26NA50460), or high voltage part assembly (p/n 26NA-5260) as
necessary.
USAGE:
22
FK101, unable to send or receive faxes. No dial tone when pushing the OFF HOOK selection
on the LCD.
DESCRIPTION: SOLUTION ID:
88221
SOLUTION:
CAUSE: The telephone line that connects the FK101 to the wall jack has become damaged or the
NCU board has failed.
SOLUTION: Replace the telephone line included with FK101, or if necessary replace the NCU
board (p/n 13FQ-9020).
USAGE:
21
F10-1 shortly after power up.DESCRIPTION: SOLUTION ID:
113506
SOLUTION:
CAUSE: Loss of 5V DC output from the PRDB, due to an open ICP1 on the PRDB.
SOLUTION: To check the state of ICP1, perform the following:
1. Power the copier ON.
2. Using a voltmeter (20V DC range), confirm the 5V DC input to the PRDB at CN21-4 on the
PRDB.
3. Check for 5V DC on TP5 of the PRDB, which is located on the right rear corner of the PRDB,
slightly to the left of LED1. If 5V DC is NOT present at TP5, then check for 5V DC on both sides of
ICP1, which is located below and slightly to the left of TP5.
4. Replace the PRDB (p/n 26NA-9022) as necessary.
Note: If ICP1 is open, troubleshoot all 5V DC outputs from the PRDB for a short circuit prior to
installing a new PRDB. As a precaution, when installing the new PRDB initially install CN21 only,
power the copier ON and confirm 5V DC at TP5. For all remaining connectors on the PRDB, the
copier should be powered OFF; using SW1 and a single connector should then be attached to the
PRDB. Next, power the copier ON, and confirm the presence of 5V DC at TP5. If the 5V DC at
TP5 is lost after connecting a particular connector, then a 5V DC load associated with that
connector is the source of the problem.
USAGE:
21
DF314, not recognized by the main body.DESCRIPTION: SOLUTION ID:
82443
SOLUTION:
CAUSE: The wiring from the RADF connector on the main body is pinched behind the wire bundle
guide plate.
SOLUTION: After reinstalling the main CB, [[ensure that the wiring to the RADF connector is in
front of the wire bundle guide plate| IMAGE V:\bitmaps\cjc190.bmp SCROLL]]. The wire bundle
USAGE:
20
13
Copyright 2005, Konica Minolta Business Solutions U.S.A., Inc.
May 2005