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VIDEO GRAPHIC PRINTER
UP-960
UP-960CE
1st Edition
SERVICE MANUAL


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! WARNING
This manual is intended for qualified service personnel
only.
To reduce the risk of electric shock, fire or injury, do not
perform any servicing other than that contained in the
operating instructions unless you are qualified to do
so. Refer all servicing to qualified service personnel.


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1
UP-960(UC)
UP-960CE(CE)
TABLE OF CONTENTS
1.
OPERATING INSTRUCTIONS
2.
SERVICE OVERVIEW
2-1. PC BOARD LOCATION ............................................................................... 2-1
2-2. REMOVAL OF THE COVER AND THE PANELS .................................... 2-2
2-2-1.
Removal of the Top Cover ..................................................................... 2-2
2-2-2.
Removal of the Door Panel .................................................................... 2-2
2-2-3.
Removal of the Front Panel .................................................................... 2-3
2-2-4.
Removal of the Rear Panel ..................................................................... 2-3
2-3. REMOVAL OF THE MAIN PARTS ............................................................ 2-4
2-3-1.
Removal of the Mechanical Block ......................................................... 2-4
2-3-2.
Removal of the MA-91 Board and the Switching Regulator ................. 2-4
2-3-3.
Removal of the Thermal Head ............................................................... 2-5
3.
ELECTRICAL ALIGNMENT
3-1. TRAP ADJUSMENT ..................................................................................... 3-1
3-2. VIDEO LEVEL ADJUSTMENT ................................................................... 3-2
3-3. BRIGHTNESS AND CONTRAST ADJUSTMENT .................................... 3-2
3-4. DOOR LOCK SENSOR ADJUSTMENT ..................................................... 3-3
3-5. HEAD VOLTAGE ADJUSTMENT .............................................................. 3-4
4.
CIRCUIT OPERATION DESCRIPTION
4-1. VIDEO CIRCUIT ........................................................................................... 4-4
4-1-1.
Input Trap Filter Circuit ......................................................................... 4-4
4-1-2.
Sharpness, AGC Circuit and C-SYNC Signal ........................................ 4-4
4-1-3.
Brightness, Contrast Control and A/D Conversion ................................ 4-4
4-2. OSCILLATOR CIRCUIT .............................................................................. 4-5
4-3. IC601 PERIPHERAL CIRCUIT .................................................................... 4-5
4-3-1.
Serial Data Reading from System Control ............................................. 4-6
4-3-2.
Writing to the Frame Memory ................................................................ 4-6
4-3-3.
Transfer from Frame Memory to Line Memory ..................................... 4-6
4-3-4.
Thermal Head Control and One Line Memory ...................................... 4-6
4-4. SYSTEM CONTROL SECTION .................................................................. 4-8
4-4-1.
Watch of Various Keys .......................................................................... 4-8
4-4-2.
Watch of Various Function Switches ..................................................... 4-8
4-4-3.
Platen Motor Control .............................................................................. 4-9
4-4-4.
Head Up and Down Control ................................................................... 4-9
4-4-5.
Door Open and Close Control .............................................................. 4-10
4-4-6.
Watch of Paper Sensor ......................................................................... 4-11
4-4-7.
Watch of the Head Temperature Sensor ............................................... 4-11
4-4-8.
Head Fan Motor (for Head Cooling) Control ....................................... 4-11
4-4-9.
Analog Circuit Section Control ............................................................ 4-12
4-4-10. Gate Array IC601 Control .................................................................... 4-12


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2
UP-960(UC)
UP-960CE(CE)
4-5. THERMAL HEAD SECTION ..................................................................... 4-13
4-5-1.
Structure ............................................................................................... 4-13
4-5-2.
Basic Operation .................................................................................... 4-14
4-5-3.
Stair Generation .................................................................................... 4-15
4-5-4.
Temperature Compensation .................................................................. 4-15
4-5-5.
Line Number Correction ....................................................................... 4-15
5.
TROUBLESHOOTING
5-1. PRINT IS FAULTY ....................................................................................... 5-1
5-2. PRINT IS TOO DARK OR TOO LIGHT ...................................................... 5-2
5-3. "PAPER SENSOR" IS OUT OF ORDER ..................................................... 5-3
5-4. HEAD OPERATION (UP & DOWN) IS OUT OF ORDER ........................ 5-4
5-5. PAPER FEEDING IS OUT OF ORDER ....................................................... 5-5
5-6. DOOR (OPENING & CLOSING) IS OUT OF ORDER ............................... 5-6
6.
SEMICONDUCTOR PIN ASSIGNMENTS
SEMICONDUCTOR INDEX ........................................................................ 6-1
DIODE ............................................................................................................ 6-2
LED ................................................................................................................ 6-2
TRANSISTOR ............................................................................................... 6-2
OTHERS ........................................................................................................ 6-2
IC .................................................................................................................... 6-3
7.
SPARE PARTS
7-1. NOTES ON REPAIR PARTS ........................................................................ 7-1
7-2. EXPLODED VIEW ....................................................................................... 7-2
Ornamental Block & Mechanical Block ........................................................ 7-2
Ornamental Block & Switching Regulator .................................................... 7-3
Sub Assy, Top Chassis ................................................................................... 7-4
Feeder Block ................................................................................................... 7-5
Chassis Block Assy, Rear ............................................................................... 7-6
Chassis Block & Gear .................................................................................... 7-7
7-3. ELECTRICAL PARTS LIST ......................................................................... 7-8
8.
BLOCK DIAGRAMS
OVERALL (1/2) ............................................................................................. 8-2
OVERALL (2/2) ............................................................................................. 8-4


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3
UP-960(UC)
UP-960CE(CE)
9.
PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
MA-91 ............................................................................................................ 9-1
KY-421 ......................................................................................................... 9-11
PTC-98 ......................................................................................................... 9-11
SE-441 .......................................................................................................... 9-11
SE-442 .......................................................................................................... 9-11
SE-485 .......................................................................................................... 9-11
SU-41 ............................................................................................................ 9-11
SU-42 ............................................................................................................ 9-11
FRAME ........................................................................................................ 9-12
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