3-36
Chapter 3 Troubleshooting
The possible reason for this failure is the short
circuit/open circuit of the J702 and onwards of
the IIT LVPS. Check for a short circuit by
referring to Chapter 4 Wiring Data. (WN4.3.25
IIT+24 VDC)
Replace the IIT/IPS PWB. (PL16.3)
When
DC330
[006-005] (SCAN) or
DC330
[006-006]
(RETURN) is On, is +24 VDC measured between the
CARRIAGE MOTOR P739-1 (+) and GND (-)?
Y
N
In the same Diag, is +24 VDC measured between the
IIT/IPS PWB J725-1 (+) and GND (-)?
Y
N
Replace the IIT/IPS PWB. (PL16.3)
Check the wire between the IIT/IPS PWB J725-1~6
and the CARRIAGE MOTOR P739-1~6 for an open
circuit or poor contact.
Check the wire between the IIT/IPS PWB J725 and the
CARRIAGE MOTOR P739-5 for an open circuit or poor
contact. If no problems are found, replace the
CARRIAGE MOTOR (PL16.5) and IIT/IPS PWB
(PL16.3) in sequence.
Check the following:
• The CARRIAGE MOTOR BELT for damage, loosening
and disengagement
• The CARRIAGE CAPSTAN SHAFT/PULLEY for wear,
distortion and chips
• Full Rate/Half Rate Carriage Position Adjustment
(ADJ2.1.1)
If no problems are found, replace the IIT/IPS PWB (PL16.3).
006-391 SCAN INITIALIZE MOTOR DRIVER
FAILURE
Description
The CARRIAGE MOTOR error was detected
after the initialization was started.
BSD on : CH6.4 CH6.12C
Procedure
Turn Off the power. Remove the following covers:
• TOP COVER
• IIT REAR COVER
Measure conductivity of the following:
Between the CARRIAGE MOTOR P739-6 and the IIT/IPS
PWB J725-6
Between the CARRIAGE MOTOR P739-5 and the IIT/IPS
PWB J725-5
Between the CARRIAGE MOTOR P739-4 and the IIT/IPS
PWB J725-4
Between the CARRIAGE MOTOR P739-3 and the IIT/IPS
PWB J725-3
Between the CARRIAGE MOTOR P739-2 and the IIT/IPS
PWB J725-2
Between the CARRIAGE MOTOR P739-1 and the IIT/IPS
PWB J725-1
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 following parts:
• CARRIAGE MOTOR (PL16.5)
• IIT/IPS PWB (PL16.3)
Summary of Contents for Workio DP-C401
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: ......