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Hitachi UX Twin Nozzle Service Manual
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4-77
4.
16 Maintenance work of
intake fan unit
4.
16
.1
Structure o
f In
take f
an unit
4.16.2 Rep
lacement
of
Intake
fan un
it
1
Turn of
f the
power.
2
Loosen the
thum
bscrew and remo
ve the Inta
ke fan
cover.
3
Remove the A
ir filter.
[Note]
The
Air filter has f
ront and
rear face
s.
Set the f
ilter with red-mark be
ing invisible.
Intake fan cover assem
bly
Intake fan
Thum
bscrew
Air
filter
Intake fan unit assem
bly
Intake fan cover
Air filter
(Red-m
ark in rear)
Intake fan cover
Thum
bscrew (2 locations)
210
212
Table of Contents
Default Chapter
1
Service Manual
1
Table of Contents
3
1 Introduction
7
Safety Precautions
7
Structure of each Part in the Main Body
16
External Views
16
Main Body Internal
17
Print Head
18
Installation
19
Power Supply Wiring
19
Installation Procedure
21
2 Maintenance Work
23
Setting of Service Personnel Maintenance Mode
23
System Environment Setup
26
Adjustment/Operational Checkout
27
Excitation Adjustment
27
Charging Voltage Confirmation
30
Phase Margin Test
32
Auto Phase Gain Adjustment
35
Level Sensor Confirmation
37
Heating Unit Confirmation
40
Test of Solenoid Valve/Pump
42
Download
44
Calibration of Viscometer
46
Operation Test of Viscometer
47
Circulation System Environment Setup
48
System Reset
49
Backup
50
Unit Information
51
Handling of the Warning "Product Speed Matching Error", Etc
53
Language Registration
58
Fault / Warning Log Management Code
60
Software Option Setup
62
Time of Preparing for Printing
64
Touch Screen Setup
65
Logging Data
66
Rescue Soft
75
3 Maintenance of Controlling Part
77
Structure of Controlling Part
77
Controller Part
81
EZJ128 Board (Controller Board)
81
Battery
84
Lcd
86
Touch Panel
88
EZJ133 Board (MPU Board)
94
Model Key
94
Language Key (Option)
94
EZJ125 Board (Nozzle1 Drive Board)
95
EZJ134 Board (Nozzle2 Drive Board)
98
EZJ127 Board (I/O Board)
101
EZJ138 Board (Ink Circulation Module Connection Board)
107
EZJ113 Board (Power Relay Board 1)
108
EZJ139 Board (Power Relay Board 2)
110
EZJ114 Board (LED / SW Board)
112
EZJ119A Board (Relay Output Board) (Optional Board)
112
EZJ130 Board (Software Option Control Board)
114
EZJ129 Board (Software Option Terminal Board)
116
Multiple Power Supply 1 and 2
124
High Voltage Power Supply 1 and 2
127
DC Fan
128
LAN Communication Function
128
RFID Reader
129
Electrical Connection Diagram
131
4 Maintenance of Circulation System
135
Structure of Circulation System
135
Access to the Parts on the Front Side of the Equipment
138
Access to the Parts on the Rear Side of the Equipment
140
Main Ink Tank Maintenance
142
Structure of Main Ink Tank
142
Main Ink Tank Replacement Procedure
143
Pressure Reducing Valve Replacement Procedure
146
ICU Joint Structure and Handling
147
Solenoid Valves Replacement Procedure
148
Pressure Sensor Replacement Procedure
152
Pressure Sensor (Nozzle 1) Replacement Procedure
152
Pressure Sensor (Nozzle 2) Replacement Procedure
154
Circulation Unit Replacement Procedure
157
Pump Parts Replacement
159
Pump Unit Replacement Procedure
159
Drive Unit Replacement Procedure
162
Pump Head Replacement
164
Motor Replacement
166
Gear Replacement
168
Recovery Pump2 Drive Unit Replacement Procedure
169
Recovery Pump2 Pump Head Replacement
171
Recovery Pump2 Motor Replacement Procedure
173
Recovery Pump2 Gear Replacement
175
Circulation Filter and Makeup Filter Replacement Procedure
177
Circulation Filter and Makeup Filter
177
Circulation Filter and Makeup Filter
178
Ink Reservoir/Makeup Reservoir Replacement Procedure
179
Ink Reservoir Replacement
179
Makeup Reservoir Replacement
181
Solenoid Replacement Procedure
183
Troubleshooting When Fault Occurs in Viscometer
186
Viscometer Removal Procedure
186
Disassembling and Washing Viscometer
188
Viscometer Assembly Procedure
189
Viscometer Attaching Procedure
189
Replacing Thermistor
190
Print Head Replacement Procedure
191
Troubleshooting Procedure for the Circulation System
197
Repairing Method When the Circulation Route Is Dry or Sticks
207
Recovery Method When Solenoid Valve Is Stuck
207
Repairing Method for the Supply Pump
207
Repairing Method for the Makeup Pump
208
Repairing Method for the Circulation Pump
208
Repairing Method for the Recovery Pump
209
Recovery Method When the CV Assembly Is Drying/Clogging
210
Maintenance Work of Intake Fan Unit
211
Structure of Intake Fan Unit
211
Replacement of Intake Fan Unit
211
R Air Filter Replacement Procedure
213
Check on Exhaust Duct Dripping
214
Circulation System Cleaning of Printer Which Uses Ethanol-Based Ink
215
5 Print Head Related Maintenance
217
Structure of Print Head
217
Cable Running Direction
218
Gutter Configuration and Replacement Method
219
Gutter Configuration
219
Replacement Method
219
MGV Filter Replacement
220
Shutoff Valve (MV9/MV29) Replacement
222
Heating Unit Replacement
225
APH Board (EZJ135) Replacement
227
Nozzle Replacement
228
Nozzle Orifice Cleaning
231
Precautions for Use
231
Thermistor Replacement
233
Deflection Base Replacement Procedure
235
Head Base Replacement Procedure
239
Head Cable Replacement Procedure
242
6 Troubleshooting
243
Troubleshooting List
243
Faults - Ink-Stop Type
247
Faults - Print-Stop Type
289
Warning Conditions (Printing Continuously Performed)
307
Faults - no Indication on Screen
324
Firmware Download Failure
346
7 Attached Drawing
352
Circulation System Diagram
352
Tube Connection Diagram
353
Electrical Connection Diagram
354
Dimensions Around Charge Electrode and Deflection Electrode
355
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Hitachi UX Twin Nozzle Specifications
General
Brand
Hitachi
Model
UX Twin Nozzle
Category
Printer
Language
English
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