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Chapter 3 Troubleshooting
007-277 TRAY 4 PAPER SIZE SENSOR BROKEN (TTM)
Description
The abnormal AD value was detected by the
TRAY 4 PAPER SIZE SENSOR.
BSD on : CH7.4 CH7.10A
Procedure
Install the TRAY 4 into the M/C.
Does the voltage between the TRAY MODULE PWB J548-5
(+) and GND (-) correspond to the TRAY 4 PAPER SIZE
SENSOR Output Table described in the BSD: CH7.4?
Y
N
Does the voltage between the TRAY 4 PAPER SIZE
SENSOR J824-2 (+) and GND (-) correspond to the TRAY
4 SIZE SENSOR Output Table described in the BSD:
CH7.4?
Y
N
Is +5 VDC measured between the TRAY 4 SIZE
SENSOR J824-1 (+) and J824-3 (-)?
Y
N
Check the +5 VDC circuit to the TRAY 4
PAPER SIZE SENSOR J824-1 by referring to
Chapter 4 Wiring Data.
(WN4.3.5 +5 VDC-1) (WN4.3.6 +5 VDC-2)
(WN4.3.7 +5 VDC-3) (WN4.3.8 +5 VDC-4)
Check the Paper Guide for an operation failure, and
the tab that pushes the SWITCH for a poor contact. If
no problems are found, replace the TRAY 4 PAPER
SIZE SENSOR. (PL14.1)
Check the wire between the TRAY 4 PAPER SIZE
SENSOR J824-2 and the TRAY MODULE PWB J548-5
for an open circuit and poor contact.
Replace the following parts:
• TRAY MODULE PWB (PL14.15)
007-281 TRAY 1 LIFT UP FAILURE
Description
The TRAY 1 LEVEL SENSOR does not turn On
(block light) within the specified time after it has begun lifting
up.
BSD on : CH7.5 CH7.10B
Procedure
Install the TRAY 1. Run
DC330
[008-002] (Notes).
Does the TRAY 1 BOTTOM PLATE lift up?
Y
N
After running
DC330
[008-002] (Notes), is the TRAY 1
FEED/LIFTUP MOTOR going to revolve?
Y
N
Is +24 VDC measured between the TRAY 1 FEED/
LIFT UP MOTOR J205-3, 4 (+) and GND (-)?
Y
N
Check the +24 VDC INTLK circuit to the TRAY
1 FEED/LIFT UP MOTOR J205-3, 4 by
referring to Chapter 4 Wiring Data.
(WN4.3.13 +24 VDC-1)
(WN4.3.14 +24 VDC-2)
(WN4.3.15 +24 VDC-3)
(WN4.3.16 +24 VDC-4)
Turn Off the power.
Check conductivity of the following:
• Between the TRAY 1 FEED/LIFT UP MOTOR
J205-1 and I/F PWB J532-A6
• Between the TRAY 1 FEED/LIFT UP MOTOR
J205-2 and I/F PWB J532-A5
• Between the TRAY 1 FEED/LIFT UP MOTOR
J205-5 and I/F PWB J532-A2
• Between the TRAY 1 FEED/LIFT UP MOTOR
J205-6 and I/F PWB J532-A1
Is the resistance 1 Ohm or less for all wires?
Y
N
Check wires with more than 1 Ohm for an open
circuit or poor contact.
Replace the TRAY 1 FEED/LIFT UP MOTOR
(PL2.4), I/F PWB (PL9.1), and MCU PWB (PL13.1)
in sequence.
Check drive of the following:
Manually turn the gear at rear of the TRAY 1 to check
that the BOTTOM PLATE moves up and down
smoothly.
Gently push TRAY 1 in to check the drive
transmission is firmly engaged.
Run
DC330
[007-116].
Pull out the TRAY 1 and turn the TRAY1 LEVEL SENSOR
On/Off.
Is the display switched between H and L?
Y
N
Repair the TRAY 1 LEVEL SENSOR using Generic
Permeable Sensor Failure FIP. (PL2.4)
Replace the following parts:
• I/F PWB (PL9.1)
• MCU PWB (PL13.1)
For the DC330 that have "Notes" in the following
FIP, check the machine status before selecting and
executing the appropriate DC330.
If the Diag with On signals is executed to the part
that is On, the communication link between the PSW
and the Main Unit may be broken.
In addition, the Diagnostics button indicated in
"Notes" is set to be executed after the Chain-Link
No. is selected.
Summary of Contents for DP-C321
Page 4: ...This page is intentionally left blank ...
Page 5: ...Chapter 1 General ...
Page 22: ...1 16 Chapter 1 General 1 3 Type of Paper ...
Page 23: ...1 17 Chapter 1 General ...
Page 24: ...Chapter 2 Maintenance ...
Page 63: ...Chapter 3 Troubleshooting ...
Page 118: ...3 44 Chapter 3 Troubleshooting I F PWB PL9 1 MCU PWB PL13 1 ...
Page 445: ...Chapter 4 Parts List ...
Page 548: ......