JUKI 6100 User manual

CONTENTS
^3 EMER/\ L•*•••1
1Bssic SpGcif icstions ,1
2. Main Component Units 1
2.1 Print unit 1
212 ntrolunit •••*•*••*•* 1
2.3 Cover unit 1
3. Block Diagrams 2
3.1 Block diagram of all component units 2
3.2 Block diagram of control boards 2
4. Operation of Print Unit Mechanisms 3
4.1 Carriage feed mechanism 3
4.2 Character selection mechansism 6
4.3 Hammer mechanism 6
4.4 Ribbon feed mechanism 7
4.5 Form feed mechanism 7
5. Removal and Replacement 8
5.1 Maintenance tools 8
5.2 Disassembly and assembly 9
6. Adjustment 31
6.1 Carriage unit and linear motor unit adjustment 31
6.2 Ribbon mechanism adjustment 42
6.3 Platen drive mechanism adjustment 46
6.4 Paper bail adjustment 47
7. Theory of Operation 48
7.1 Power supply 48
7.2 MCU and SCU operations 54
7.3 Daisy motor and linear motor home position sensor circuit 61
7.4 Control panel 62
8. Lubrication 65
8.1 Lubricating the carriage unit 66
8.2 Lubricating the frame unit 67
8.3 Lubricating the parts 68
9. Configuration 70
10. Troubleshooting 71
10.1 General desciption 71
10.2 Troubleshooting 71

GENERAL
This Technical Manual describes the maintenance, troubleshooting, and operating
principle of the daisy wheel printer.
1. Basic Specifications
Print speed
Print system
Print wheel
Character spacing
Line spacing
Form feed
Max. form width
Copies
Ribbon
Interface
Environmental requirements
Weight
18characters/second (Max.)
Daisy wheel
1OO-characters/wheel
110 characters under 10 pitch.
132 characters under 12 pitch.
165 characters under 15 pitch.
82 to 220 characters under proportional spacing mode.
1/48 inch (1 /96 inch possible by ESC sequence)
Friction feed
13 inches (printing line 1 1 inches)
Original copy +3copies
IBM 82 compatible multi strike or single strike ribbon
(selectric II ribbon)
Centronics parallel interface
RS232C Serial Interface (Option)
Temperature 41°F ~95°F(5 ~35°C)
Humidity 30% ~85% (no dew condensation)
About 27.5 lbs. (about 12.5 kg)
2. Main Component Units
This printer consists of the following three major units.
2.1 Print unit
The print unit is comprised of the frame assembly, carriage and linear motor unit
and the form feed mechanism. Occupying the largest part of the print unit, the
carriage performs lateral feed, character selection, printing and ribbon feed. Use
of aliner motor makes the carriage simple in design for easy maintenance.
2.2 Control unit
This unit provides all the controls for the printer and consists of apower supply
and two CPU boards. One of the CPU circuit boards serves as the slave CPU
circuit board for controlling the print unit mechanisms, and the other is the master
CPU circuit baord for controlling the slave CPU circuit board and for the commu-
nication with the host CPU.
2.3 Cover unit
The cover unit consists of abottom cover, center cover, top cover, and acoustic
cover. Except for two screws, snap-latches are used for connection between the
covers.

3. Block Diagrams
3.1 Block diagram of all component units
Interface >'
<
Operation
panel
<
Power supply
Control
board
Carriage
PF motor
Status SW
Fig. 3.1
3.2 Block diagram of control boards
Serial interface
connector
77
V
1
Buffer Buffer
8251
UART
1
Serial interface
board (option)
Parallel interface
connector
A
Operation panel
connector
7>
Buffer
ABuffer
RAM 2k byte
(MAY 8k byte)
ROM
8k byte
JL
y.
256 byte RAM
8155
Timer I/O port
0"
8051 Master CPU
AMaster CPU board
V
8051 Slave CPU
7%
iz
Driver circuit
Carriage, PF Motor,
status SW connector
Slave CPU board
Fig. 3.2
-2-