Minolta Di 152, Di 183 Trouble Low image density
FrameMaker Ver.5.5E(PC) Di152/Di183 TROUBLESHOOTING
01.09.04
(3) Low image density
Section Step Check Result Action
Output
system
1 Image density changes after “Toner
Replenisher” has been run.
• “Toner Replenisher” of Utility
2 Image density changes after “ID Adjust-
ment” and “VG Adjustment” have been
made.
3 Image transfer current contact is dirty,
folded, or bent.
4 Developing bias contact is dirty, folded,
or bent.
5 High Voltage Unit (HV1) connectors
CN1HV1 and CN2HV1 are loose.
6 ATDC Sensor (UN1) is dirty with foreign
matter (such as paper dust) other than
developer.
7 The following voltages develop from the
ATDC Sensor (UN1).
<Check Procedure>
Check voltage across a Master Board
pin and GND when the Power Switch is
turned ON.
• DC5. 39 V to 8.15 V across PJ7A-8
and GND
• DC1. 41 V to 4.98 V across PJ7A-10
and GND
8 The following voltage is supplied from
the Master Board (copier: PWB-A).
<Check Procedure>
Check voltage across a Master Board
pin and GND when the Start key is
pressed.
• Voltage across PJ8A-8 and GND
DC14 V in standby state
DC0 V when Start key is pressed
YES • Replenish the supply of
toner using “Toner
Replenisher.”
YES • Readjust.
For more details, see
SWITCHES ON PWBs/
TECH. REP. SETTINGS.
YES • Clean, correct, or
change.
YES • Clean, correct, or
change.
YES • Reconnect.
YES • Clean.
NO • Change ATDC Sensor
(UN1) and then change
developer.
YES • Change IU.
• Change High Voltage
Unit (HV1).
NO • Change Mas ter Board
(copier: PWB-A).
T-47
FrameMaker Ver.5.5E(PC) Di152/Di183 TROUBLESHOOTING
01.09.04
Section Step Check Result Action
Input
system
1 Shading sheet reading portion (the por-
tion on the backside of the Original
Glass to which Original Width Scale is
affixed) is dirty .
2 CCD Board (copier: PWB-J) connector
is loose.
3 Control Board (copier: PWB-C) connec-
tor PJ1A is loose.
YES • Clean.
YES • Reconnect.
YES • Reconnect.
NO • Change Control Board
(copier: PWB-C).
• Change Mas ter Board
(copier: PWB-A).
T-48
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