Citizen PPU-231 Manual de usuario
CITIZEN
Service Manual
Model: PPU-231
Line Thermal
Printer/Presenter Unit
Rev. 1.00 Newly issued on May 12, 1999
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PPU-231 Service Manual
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INTRODUCTION
This manual describes the disassembly, reassembly, and maintenance procedures of the line
thermal presenter/printer PPU-231. It is intended for field maintenance men.
FEATURES
Packed with features, this small line thermal printer/presenter has a wide range of uses: a termi-
nal device for various data communication, an instrumentation terminal, an outdoor information
terminal or a device that prints various tickets and coupons. Please read this manual thor-
oughly before you use the printer/presenter to ensure it is implemented correctly.
1. Small, lightweight, and installable in a narrow area
2. High speed and low noise, owing to line thermal print
3. Long-life printing head and high reliability, owing to the simple mechanism
4. Easy paper-loading, owing to the auto-loading function
5. Built-in input buffer.
6. Capable of printing a bar code (Special command)
7. You can choose where you attach the power connector, interface connector, etc.
8. Large diameter paper roll support
PPU-231 Service Manual
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1. HANDLING AND MAINTENANCE OF PRINTER ..........................................................................4
2. SPECIFICATIONS ...............................................................................................................................5
2.1 Basic Specifications ....................................................................................................................5
3. DISASSEMBLY AND REASSEMBLY ................................................................................................6
3.1 Disassembly Procedure for PPU Unit.......................................................................................6
3.2 Disassembly Procedure for PRU Unit.......................................................................................9
3.3 Disassembly Procedure for PMU Unit....................................................................................13
3.4 Reassembly Procedure..............................................................................................................15
4. TROUBLESHOOTING ......................................................................................................................16
4.1 Troubleshooting Procedure..………………………………………………………………..………16
4.2 Troubleshooting Guide.. ..…………………………………………………………………….……..16
5. SERVICE PARTS LIST ......................................................................................................................19
5.1 Parts List for Mechanism.........................................................................................................19
5.2 Disassembly Drawing...............................................................................................................21
5.3 Parts List for Control Board ...................................................................................................24
5.4 Parts Layout Drawing..............................................................................................................26
6. DRAWING...........................................................................................................................................29
6.1 Block Diagram..........................................................................................................................30
6.2 Circuit Diagram........................................................................................................................31
7. OUTER DIMENSION ........................................................................................................................32
h: For the printer mechanism LT380V and auto cutter ACS-230F, refer to the separate Service
Manuals.
PPU-231 Service Manual
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See the User’s Manual coming with the printer body.
PPU-231 Service Manual
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Item Description
Printing system Line thermal dot printing
Printing width 72 mm (576 dots/line)
Dot density 8 dots/mm (Width, Length)
Printing speed 62.5 mm/sec. (At maximum speed), (500-dot line/sec.)
Printing columns and
character size 48 columns (12´24 FontA) 1.25´3.00 mm
64 columns (9´24 Font B) 0.88´3.00 mm
Line interval Initial value: 4.23 mm (1/6 inch)
Can be set with a command (1/203 inch at minimum)
Character types Alphanumeric, Japanese, International characters
Bar code type UPC-A, JAN(EAN) 13-/8-column, ITF, CODE 39, CODE 128, CODABAR
Paper Thermal paper roll
Width:80 mm
Outer diameter: f203 mm (Max.), (When using PHU)
Inter diameter: f25.4 mm (Max.)
Thickness: 60~85 µm
Recommended paper TF-50KS-E, E2C (made by Nippon Seishi)
Presenter Length of normal issue
64
~305 mm (Can be adapted to issue 457 mm lengths)
2.5
~12 inches (Can be adapted to issue 18-inch lengths)
Interface Serial (RS-232C), Parallel (Conforms to CENTRONICS)
Input buffer 4 KB
Command ESC/POS
Sensors Paper near end sensor (When using PHU, position adjustable)
Paper end sensor (When using PMU)
Black mark Sensor (Option)
Supply voltage 24 V DC +/- 7%
Power consumption 100 W
Weight PPU: 1.6 kg (Control PCB included)
PHU: 0.9 kg (Paper roll excluded)
Outer dimensions PPU: 144.7(W)´160(D) ´172(H) mm
PHU: 132.2(W)´120(D) ´125.2(H) mm
*: Protruding parts are not included.
Operating temperature
and humidity 5~40°C, 35~85 % RH (No dew condensation)
Storage temperature
and humidity -20~60°C, 10~90% RH (No dew condensation)
Reliability Printing head life:
Pulse resistance : 50 million pulses or more (Print rate 12.5%)
Wear resistance: 30 km or more (With recommended thermal paper
at normal temperature and humidity)
Auto cutter life:
300,000 cuts (With recommended thermal paper at normal tempera-
ture and humidity)
PPU-231 Service Manual
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For maintenance operations, note the following:
Notes:
(1) Do not disassemble/reassemble or adjust the machine, if it functions properly. Particularly,
do not loosen screws on any component, unless necessary.
(2) After completing an inspection and before turning on the power, be sure to check that there is
no abnormality.
(3) Never try to print without paper installed in the printer. Check that the printing paper is
properly set.
(4) During maintenance, be careful not to leave parts or screws unattached or loose inside the
printer.
(5) When handling the thermal head and control board,do not use gloves or other aids which can
easily cause static electricity. Also, avoid a place where static electricity can occur.
(6) When disassembling or reassembling, check cables and boards for any damage. Do not run
cables into a narrow space or set cables in improper positions.
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(1) Disconnect the two connectors from the control board and detach the PRU unit after re-
moving the four screws.
PRU Unit
PPU-231 Service Manual
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(2) Release the lock of the FCC connector, disconnect the FCC from the control board, remove
the two springs, pull out the knob, unfasten the two screws, and detach the PMU unit.
(3) Disconnect the connectors of power connector assy, power switch assy, feed switch assy, and
I/F connector assy from the control board.
PMU Unit
Feed SwitchAssy
Power Switch Assy
Power Connector Assy
I/F ConnectorAssy
Knob
Spring
PPU-231 Service Manual
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(4) Disengage the four claws that are holding the control board and detach the control board.
(5) Remove the side frame L and R.
Control Board
DIP Switch
Side Frame R
Side Frame L
Center Frame
PPU-231 Service Manual
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(1) Remove the four screws from the PRU unit, that are fixing the cutter bracket. Then, re-
move the auto cutter unit.
(2) Push the U-shaped part of the door and remove the door. Then, pull out the roller shaft
and remove the roller.
Presenter Bracket
Roller
Roller Shaft Door
PPU-231 Service Manual
– 10 – CITIZEN
(3) Remove the four screws that are fixing the upper case and detach the upper case.
(4) Remove the feed roller assy and PE sensor assy by pulling them horizontally.
Feed Roller Assy
Upper Case
PE Sensor
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