Rockhopper 38 – Maintenance Manual
170
AP-74038, Rev. 1.1, 25/01/05
7.2.11 How to Check the Power Supply Voltages/24 V DC and 42 V DC
24 V DC Check
Step 1 :
Turn off the power switch and open the Control Box.
(The power cable may remain connected.)
Step 2 :
With Power Board connector J001 disconnected, turn on the Power Switch and check that +24 V
±0.5 V is being output between pins 4 and 3 of J001.
If not, take the following steps to identify the cause:
•
Go to (How to Check the Power Supply Voltages/100 V AC or 200 V AC)
•
If the 100 V AC or 200 V AC check is normal and there is no +24 V output, replace the
Power Board.
Step 3 :
Turn off the power supply momentarily to restore the J001 connector to the Power Board.
Turn on the Power Switch and check that +24 V ±0.5 V is being output between pins 4 (GND)
and 3 of J101 on the Main Board.
If not, take the following steps to identify the cause:
•
Turn off the power supply momentarily to disconnect J111 (HEAD1) and J112 (HEAD2) from
the Main Board and check again.
If this is successful, either the Head Board or the Print Head Assembly or the Y Cable
Assembly or the Head Cable Assembly or the Origin Sensor Assembly or the Paper Sensor
Assembly is faulty.
•
Turn off the power supply momentarily to disconnect J120 from the Main Board and check
again.
If this is successful, the Y Motor Assembly is faulty.
•
Turn off the power supply momentarily to disconnect J119 from the Main Board and check
again.
If this is successful, the X Motor Assembly is faulty.
•
Turn off the power supply momentarily to disconnect J115 (FAN1) from the Main Board and
check again.
If this is successful, either the Fan Assembly or Fan Cable 1 is faulty.
•
Turn off the power supply momentarily to disconnect J116 (FAN2) from the Main Board and
check again.
If this is successful, either the Fan Assembly or Fan Cable 2 is faulty.
•
Turn off the power supply momentarily to disconnect J117 (FAN3) from the Main Board and
check again.
If this is successful, either the Fan Assembly or Fan Cable 3 is faulty.
Step 4 :
If there is still no ±24 V output with all the above connectors disconnected,
•
Replace the DC Cable Assembly
•
Replace the Main Board.
Summary of Contents for Rockhopper 38
Page 1: ...Maintenance Manual MUTOH EUROPE N V AP 74038 Rev 1 1 25 01 2005 ...
Page 2: ...Rockhopper 38 Maintenance Manual 2 AP 74038 Rev 1 1 25 01 05 ...
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