User’s Manual
CONTROL BOARD FOR MLT-288/MLT-289
MODEL
Rev. 1.10 Newly Issued on June 23rd, 2003
BD2-2880/2890
REVISION
Rev. No. Date Content
0.00 2000.06.26 Newly authored as a tentative edition for CS products reference.
1.00 2002.08.09 Cover, Page 1, 2, 3, 7, 9 is changed.
1.10 2003.06.23 Chapters 11 (Print Control Functions) and 12 (Character Code Table)
are deleted.
i
CONTENTS
1. OUTLINE ........................................................................................................................ 1
1.1 Features ............................................................................................................................................................. 1
1.2 Precaution .......................................................................................................................................................... 1
2. BASIC SPECIFICATIONS ........................................................................................... 2
2.1 Model Classification.......................................................................................................................................... 2
2.2 Basic Specifications...........................................................................................................................................3
3. CONNECTING CONNECTORS.................................................................................. 4
3.1 CN1 Connector for Printer Mechanism (For Print Head) ................................................................................. 4
3.2 CN2 Connector for Print Mechanism (For Motor & Sensor)............................................................................4
3.3 CN3 Connector for Interface ............................................................................................................................. 5
3.4 CN4 Connector for Paper Cutter .......................................................................................................................6
4. DIP SWITCH SETTING ............................................................................................... 7
5. POWER SUPPLY ........................................................................................................... 9
5.1 Specifications .................................................................................................................................................... 9
5.2 Precautions ........................................................................................................................................................ 9
6. PARALLEL INTERFACE ........................................................................................... 10
6.1 Specifications .................................................................................................................................................. 10
6.2 Explanation of Input/Output Signals ............................................................................................................... 10
6.3 Electrical Characteristics ................................................................................................................................. 10
6.4 Timing Chart.................................................................................................................................................... 11
6.5 Data Receiving Control ...................................................................................................................................12
6.6 Buffering.......................................................................................................................................................... 12
7. SERIAL INTERFACE ................................................................................................. 13
7.1 Specifications .................................................................................................................................................. 13
7.2 Explanation of Input/Output Signals ............................................................................................................... 14
7.3 Error Detection ................................................................................................................................................14
7.4 Data Receiving Control ...................................................................................................................................14
7.5 Buffering.......................................................................................................................................................... 15
7.6 Electrical Characteristics ................................................................................................................................. 15
ii
8. ERROR HANDLING ................................................................................................... 16
8.1 Peripheral Circuit Errors ................................................................................................................................. 16
8.2 Operation Errors ..............................................................................................................................................16
8.3 Errors Indication .............................................................................................................................................. 18
9. PRINTER MECHANISM CONTROL SYSTEM ..................................................... 19
9.1 Thermal Head Control System (Division Driving System) ............................................................................. 19
9.1.1 Fixed Division Number System ................................................................................................................. 19
9.1.2 Variable Division Number System ............................................................................................................. 19
9.2 Motor Drive ..................................................................................................................................................... 20
9.2.1 Motor Drive Features ................................................................................................................................. 20
9.2.2 Maximum Motor Drive Speeds at Major Voltage ...................................................................................... 20
10. MAINTENANCE AND SERVICE............................................................................ 21
APPENDIX 1. BLOCK DIAGRAM ............................................................................... 22
APPENDIX 2. OUTER DIMENSION ............................................................................ 23
iii
1. OUTLINE
This control boards is designed to be used to control our thermal printer, “MLT-288/289” series
through the computer etc.
As being provided with many abundant functions, it can be used widely in various applications.
Before you start using it, read this manual thoroughly and understand the content.
1.1 Features
(1) Ultra compact
(2) Both interface of Serial and Parallel can be selected by dip switch.
(3) Input buffer incorporated.
(4) Bar code printing is available (dedicated command).
(5) Auto paper cutter control incorporated.
(6) User-defined character registration function (94 characters)
BD2-2880/2890 User’s Manual
(7) Low cost
1.2 Precaution
(1) Make sure to turn OFF the power supply in case of connecting/disconnecting the connectors.
(2) Absolutely do not make a short circuit between the terminals of connectors.
(3) Use power supply, LED, interface etc. following their specifications.
(4) Use the recommended paper shown below.
• Thermal Paper TF5KS-E2D (Nippon paper)
KF50-HDA (Shin-Oji paper)
F220VP, HP220A (Mitsubishi paper)
1
2. BASIC SPECIFICATIONS
2.1 Model Classification
Models are identified by the following coding scheme:
BD2 - 2880 U C
Auto Cutter Drive
C : With auto cutter function
None : Without auto cutter function
Character Set
U : Internatiomal model
BD2-2880/2890 User’s Manual
Model Name of applied printer mechanism
2880 : For MLT-288
2890 : For MLT-289
Model Name
2
2.2 Basic Specifications
Items Contents
Printing system
Print width
Print Speed
Number of columns
Character dimensions
Character types
Bar code type
Line pitch
Interface
Input buffer
Supply voltage
Weight
Outer Dimension
Operating Environment
Storage Environment
BD2-2880/2890 User’s Manual
Thermosensitive dot-matrix printing
48 mm
420 dot line/sec
Font A : 32 columns
Font B : 42 columns
Font A : 1.25 mm × 3.00 mm
Font B : 0.88 mm × 3.00 mm
Alphanumeric, international characters
UPC-A/E, JAN (EAN) 13/8 columns, ITFCODE 39, CODE128, CODABAR
4.23 mm (Can be changed by command)
Parallel (Conforms to Centronics) or Serial (Conforms to RS-232C) (Selectable by dip switch)
2 K bytes
VCC: 5V ± 5 % Approx. 130 mA (Self printing)
VP : 4.2V ~ 8.5V Approx. 1.5A (Ave) Approx. 4A (Peak) When 7.2V
Ordinal voltage is to be 7.2V (Max)
8.5V is a voltage, which is right after charging.
Approx. 40 g
75 mm (W) × 80 mm (D) (For height of component parts, see outer drawing.)
5 ~ 40˚C , 35 ~ 85% RH (with no dew condensation)
-20 ~ 60˚C , 10 ~ 90% RH (with no dew condensation)
3
3. CONNECTING CONNECTORS
3.1 CN1 Connector for Printer Mechanism (For Print Head)
BD2-2880/2890 User’s Manual
Pin No. Signal Name I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Applicable Connector : 52806-2410 (Molex)
VH
VH
SI
GND
TM
STRB 1
STRB 2
Vdd
LATCH
GND
STRB 6
CP
GND
STRB 5
STRB 3
GND
GND
STRB 4
GND
GND
GND
VH
VH
VH
–
–
Output
–
Input
Output
Output
–
Output
–
Output
Output
–
Output
Output
–
–
Outpu
–
–
–
–
–
–
Function
Power for print head
Power for print head
Head data output signal
GND
Thermistor
Strobe 1
Strobe 2
Thermal head logics power (+5V)
Latch signal
GND
Strobe 6
Clock pulse
GND
Strobe 5
Strobe 3
GND
GND
Strobe 4
GND
GND
GND
Power for print head
Power for print head
Power for print head
3.2 CN2 Connector for Print Mechanism (For Motor & Sensor)
Pin No. Signal Name I/O
1
MOTOR B
2
MOTOR A
3
MOTOR B
4
MOTOR A
5
6
7
8
9
Applicable Connector : 53047-0910 (Molex)
PE C
GND
PE A
H-UP
GND
Output
Output
Output
Output
Input
–
–
Input
–
Operation signal for motor B
Operation signal for motor A
Operation signal for motor B
Operation signal for motor A
Photo-transistor collector (Paper sensor)
Photinterruptor emitter + cathode
Photo-LED anode (Paper sensor)
4
Function
Head-up signal
Head-up sensor GND
3.3 CN3 Connector for Interface
BD2-2880/2890 User’s Manual
Pin No. Signal Name I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Applicable Connector : 53313 - 4015 (Molex)
Vcc
Vcc
GND
GND
Vp
Vp
Vp
Vp
Vp
Vp
P-GND
P-GND
P-GND
P-GND
P-GND
P-GND
LF-SW
ERROR
PEout
DTR
TXD
RXD
DSR
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
STB
BUSY
FAULT
SELECT
PE
NC
NC
SELECTIN
RESET
––
––
––
––
––
––
––
––
––
––
––
––
––
––
––
––
Input
Output
Output
Output
Output
Input
Input
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
––
––
Input
Function
Power supply for circuit (5V)
Power supply for circuit (5V)
GND
GND
Power supply for operation
Power supply for operation
Power supply for operation
Power supply for operation
Power supply for operation
Power supply for operation
GND for operation
GND for operation
GND for operation
GND for operation
GND for operation
GND for operation
LF Switch input
ERROR LED output (Can be connected directly)
PE LED output (Can be connected directly)
Serial Interface DTR
Serial Interface TXD
Serial Interface RXD
Serial Interface DSR
Parallel Interface DATA0
Parallel Interface DATA1
Parallel Interface DATA2
Parallel Interface DATA3
Parallel Interface DATA4
Parallel Interface DATA5
Parallel Interface DATA6
Parallel Interface DATA7
Parallel Interface STB
Parallel Interface BUSY
Parallel Interface FAULT
Parallel Interface SELECT
Parallel Interface PE
Parallel Interface ACK
No Connection
No Connection
Parallel Interface RESET
5
CAUTION:
1. For LED of ERROR and PE, there is a resister of 330Ω on the circuit side to make current
value 10 mA.
Please use LED which its voltage is approx. 2V. LED over 10 mA may break a control board.
2. Control circuit requires power supply only for one pin of each VCC and GND.
However, Operation voltage is to be supplied to all of pin for safety use.
3. Serial interface equips a driver and receiver of RS-232C, make sure to use it at RS-232C
level.
4. RESET terminal is pulled up by 3.3KΩ. Make sure to make this terminal NC, when this
terminal is not used.
5. LF-SW input circuit is as below.
BD2-2880/2890 User’s Manual
VCC
CN
3.4 CN4 Connector for Paper Cutter
Pin No. Signal Name I/O
1
2
3
4
Using Connector : 5267- 04A-X (Molex)
Note: Use the specified Paper Cutter (Model Name : ACS-220-5V)
M+
M–
GND
SW
Output
Output
––
Input
47k
CPU
1k
1000pF
Function
Cutter motor operational signal M +
Cutter motor operational signal M –
GND
Cutter switch input signal
6
4. DIP SWITCH SETTING
(1) DIP SWITCH
BD2-2880/2890 User’s Manual
Pin No. Function ON
DS1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
(2) JUMPER
Pin No. Function Short
J1
J2
J3
J4
J5
J6
J7
J8
*1 : BD2-2890 is set to open circuit.
Auto Cutter
CR Selection
Print Density
DTR/XON-XOFF
Baud Rate
"
"
"
International Character set
"
"
Paper Auto Loading
Print Drive System
Print Density
(Supplementary)
Not Used
Mechanism
OFF
Enable
LF Enable
Combination with J-6 (See next page (5))
XON-XOFF
See below (3)
See next page (4)
Enable
Variable division
Combination with DS1-3
See next page (5)
–
MLT-288 MLT-289 *1
Disable
LF Disable
DTR/DSR
Open
Disable
Fixed division
Factory Setting
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
Factory Setting
Short circuit
Short circuit
Short circuit
Short circuit
Short circuit
Short circuit
Short circuit
Short circuit
(3) INTERFACE & BAUD RATE
DS1-8 DS1-7
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
DS1-6
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
DS1-5
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Input Method
Parallel Input
Serial Input
"
"
"
"
"
"
"
"
"
"
"
"
"
"
Parity Baud Rate
–
None
"
"
"
"
Odd
"
"
"
"
Even
"
"
"
"
–
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
7
(4) INTERNATIONAL CHARACTER SET
BD2-2880/2890 User’s Manual
J-3 J-2
Open
Open
Open
Open
Short
Short
Short
Short
(5) PRINT DENSITY
DS1-3 J-6
OFF
OFF
ON
ON
Open
Open
Short
Short
Open
Open
Short
Short
Open
Short
Open
Short
J-1
Open
Short
Open
Short
Open
Short
Open
Short
Print Density
Light
Standard
Slightly Dark
Dark
Level
0
1
2
3
InternationalCharacter
Japan (JIS)
Japan (Shift-JIS)
Sweden
Denmark 1
U.K.
Germany
France
U.S.A
Print Density Rate
80%
100%
120%
150%
Note:
1. Input Buffer is 2k byte. (Fixed)
2. Serial data length is 8 bits. (Fixed)
If print tone is set at 2 or above, printing rate tends to be lowered.
8
5. POWER SUPPLY
5.1 Specifications
VCC : 5V ±5% Approx. 130 mA
VP : 4.2V ~ 8.5V Approx. 1.5A (Peak : Approx. 4A) when 7.2V
Ordinal Voltage is to be 7.2V (Max). 8.5V is a voltage that is right after charging.
8.5V cannot be used for ordinal voltage.
5.2 Precautions
(1) Design the product to supply power to Vcc before VP when power is supplied to this control
board.
BD2-2880/2890 User’s Manual
(2) Design the product to turn off the power for Vcc after VP when power is turned off.
(3) Make sure to turn off the power in case of connecting/disconnecting connectors.
(4) Make sure to use Vcc and VP following their specifications.
(5) Make sure to use this control board connecting all of terminals between VP and P-GND.
9
6. PARALLEL INTERFACE
6.1 Specifications
Data input method : 8 bit parallel signal (DATA0~7)
Control signals : ACK, BUSY, STB, FAULT, PE, RESET
6.2 Explanation of Input/Output Signals
DATA0~7 : 8 bit parallel signal (Positive logic)
STB : Strobe signal to read 8 bit data (Negative logic)
RESET : Signal to reset control board (Negative logic)
ACK : 8 bit data request signal. Pulse signal output at the end of the BUSY
BD2-2880/2890 User’s Manual
signal (Negative logic)
BUSY : Signal to indicate BUSY state of the printer. Input new data for “LOW”
(Positive logic)
FAULT : Signal which is made “LOW” when printer is in alarm state.
(Negative logic)
In this case all the control logics within the printer stop functioning.
PE : Signal which is output when paper runs out. (Positive logic)
6.3 Electrical Characteristics
(1) Input Signal Level
“HIGH” level : 0.7 Vcc MIN
“LOW” level : 0.3 Vcc MAX
(2) Output Signal Level
“HIGH” level : Vcc - 0.1V MIN
“LOW” level : 0.1V MAX
10
(3) I/O Conditions
STB, RESET input signals are pulled up by 3.3K .
Other input signals are pulled up by 50K .
BD2-2880/2890 User’s Manual
[Printer side]
VCC
All the output signals are pulled up by 50K
[Printer side]
VCC
[Host side]
TWIST PAIR WIRE
[Host side]
TWIST PAIR WIRE
6.4 Timing Chart
(1) Data Input and Printing Timing
DATA
STB
BUSY
BUSY
ACK
y
SupplPower
T6
T5
T1
T2
T3
T4
T1, T2, T3 : 0.5 µs (MIN)
T4 : 270 ns (MAX)
T5 : 2.3 µs (TYP)
T6 : 500 ms (MIN) *On supplying power
11
6.5 Data Receiving Control
When BUSY signal is “LOW”, data from the host can be received. When it being “HIGH”, data
cannot be received.
6.6 Buffering
This control board incorporates 2K byte buffer.
Therefore, big data can be buffered in input buffer, and the host side can be released immediately.
BD2-2880/2890 User’s Manual
12
7. SERIAL INTERFACE
7.1 Specifications
(1) Data transfer system: Asynchronous
(2) Baud rates
1200, 2400, 4800, 9600, 19200 bps (Selectable by user)
(3) Configuration of one word
Start bit : 1 bit
Data bit : 8 bits Fixed
Parity bit : Odd/Even or No parity (Selectable by user)
Stop bit : 1 bit or more
BD2-2880/2890 User’s Manual
(4) Signal polarity
RS-232C
• Mark = logic “ 1” (–3V ~ –12V)
• Space = logic “ 0” (+3V ~ +12V)
(5) Receiving data (RD signal)
RS-232C
• Mark = 1
• Space = 0
(6) Receiving control (DTR signal)
RS-232C
• Mark : Data transfer is not available
• Space : Data transfer is available
(7) Transmission control (TD signal)
DC1 code (11H) X-ON : Data reception is available
DC3 code (13H) X-OFF : Data reception is not available
13
7.2 Explanation of Input/Output Signals
(1) RXD
Serial receiving data signal. On occurrence of framing error, overrun error, or parity error, the
data is printed as “?”.
(2) DTR
When this signal is READY, write data or a command. When they are written in BUSY, overrun
error is occurred and data is ignored. Data can be written into the input buffer even when the
printer is busy printing. A BUSY also occurs when the printer is powered on, in test print, in
Online mode, or being reset.
(3) TXD
If data remaining in the printer's input buffer is 256 bytes or less, the printer transfers a DC3
(13H: Data Receive Not Ready) signal to the host. If data in the input buffer exceeds 256 bytes,
BD2-2880/2890 User’s Manual
the printer transfers a DC1 (11H: Data Receive Ready) signal to the host.
(4) GND
Common GND on the circuit.
7.3 Error Detection
Parity, framing, and overrun are detected. On detection of any error, the data are stored in the
buffer as “?”.
(1) Framing Error
With “space” state having been detected on detection of a stop bit, error takes place.
The data are stored in the buffer as “?”.
(2) Parity Error
With an error having been detected under specifying parity check, the data is stored in the buffer
as “?”.
(3) Overrun Error
On detection of an overrun error, the data are stored in the buffer as “?”.
7.4 Data Receiving Control
When DTR/DSR control having been selected, with BUSY signal at “LOW”, data from the host
side are received. With the signal at “HIGH”, they can not be received.
When DTR/DSR control not having been selected, after X-ON transmission, data is received
from the host side. No transmission of data can take place after X-OFF is transmitted.
14
7.5 Buffering
Equivalent MAX232
Data transfer to the input buffer include DTR signals and TD signals as the control signals
concerned.
(1) DTR signals (See the page 7.2 (2))
(2) TXD signals (See the page 7.2 (3))
7.6 Electrical Characteristics
(1) RS-232C Circuit
Input (RXD, DSR)
BD2-2880/2890 User’s Manual
<Printer side> <Host side>
Output (DTR, TXD)
<Printer side> <Host side>
Equivalent MAX232
15
8. ERROR HANDLING
8.1 Peripheral Circuit Errors
These errors are detected at power-on or initialization just after a reset.
(1) Error types
BD2-2880/2890 User’s Manual
Error
Memory error
Cutter error
The CPU made a self-diagnosis of the circuit and detected an error with the external
RAM.
With the auto cutter enabled at the function selection terminal (DS1-1), the auto
cutter (ACS-220-5V) is not connected to the cutter connector (CN4).
(2) External signal outputs
Pin No
20
22
27
38
Signal Name
ERROR
DTR
BUSY
FAULT
(3) Resetting methods
Error
Memory error
Cutter error
Unrecoverable
After turning off the power, connect the auto cutter (ACS-220-5V) or turn off the
function selection terminal (DS1-1) and turn on the power again.
Description
Remarks
LED output. For a blinking pattern, see 8.3 Error Indication.
Serial interface
Parallel interface
Parallel interface
Resetting Method
8.2 Operation Errors
(1) Error types
Error
No paper
Head –up
VH voltage error
Head temperature error
Cutter lock
(ACS-220-5V)
Caution: The 8.5V upper-limit voltage for VP voltage error is only an assumptive voltage just
after charging the battery when using the battery power. It cannot be normally used. A
normal maximum voltage is 7.2V.
(2) External signal outputs
Description
The printing paper set is not set
The head-up lever is at its up position
A VH voltage is beyond its allowable range (4.2 to 8.5V)
A head temperature is less than 0˚C or 65 ˚C or higher.
When driving the cutter, the cutter is locked due to an external factor (Paper
jam, etc.).
16
BD2-2880/2890 User’s Manual
Pin No
20
21
22
27
37
38
Signal Name
ERROR
PE OUT
DTR
BUSY
FAULT
(3) Resetting methods
Error
No paper
Head –up
VP voltage error
Head temperature
error
Cutter lock
(ACS-220-5V)
Remarks
LED output. For a blinking (Lighting) pattern, see 8.3 Error Indication.
LED output. This is always output at the time of no paper.
Serial interface
Parallel interface
PE
Parallel interface
Parallel interface
Resetting Method
Set the paper. See Note 1.
Bring down the head-up lever.
Set to a voltage within the allowable range (4.2 to 8.5V) and turn on the power
again. Alternatively, activate the Pin19 (LFSW) of the CN3(interface connector).
At the lower limit (less than 0 ˚C), printing becomes operational at 0 ˚C higher.
At the upper limit (65 ˚C or higher), it become operational at 60 ˚C or lower.
Eliminate paper jam and activate the Pin19(LFSW) of the CN3(Interface Connector)
or turn on the power again.
Caution:
Note 1. When auto loading has not been selected with the function selection jumper (J4), set the
paper manually. When it has been selected, the auto loading function is enabled to
facilitate replacement of the paper.
Note 2. The 8.5V upper-limit voltage for VP voltage error is only an assumptive voltage just
after charging the battery when using the battery power. It cannot be normally used. A
normal maximum voltage is 7.2V.
17
8.3 Errors Indication
The errors other than no paper are indicated by a LED output (Illumination or blinking) of the
Pin 20 (ERROR) of the CN3 (Interface connector).
BD2-2880/2890 User’s Manual
Error
Memory error
Cutter lock (Cutter error)
Head –up
VP voltage error
Head temperature error
Macro execution wait
DescriptionDisplay Pattern
Blinking cycle of 200ms
Blinking cycle of 150ms(3 times)
and 500ms(1 time).
Illuminated until reverted
Illuminated until reverted
Blinking cycle of 1 sec.
Blinking cycle of 500ms.
18
9. PRINTER MECHANISM CONTROL SYSTEM
9.1 Thermal Head Control System (Division Driving System)
The MLT-288 (Line thermal printer) is driven by this control board has a384 dots/line head
divided into 6 blocks of 64 dots each. When actually driving the head, you can select either
Fixed Division Number system, which drives the head, always dividing it into 6 blocks or
Variable Division Number system which collectively drives several blocks at the time according
to the number of activated head dots.
For selection by function selection, see 4. DIP SWITCH SETTING.
For selection by a command, see 11. PRINT CONTROL FUNCTIONS.
9.1.1 Fixed Division Number System
This system always drives each block in the same sequence.
BD2-2880/2890 User’s Manual
1st Block
64 Dots
2nd Block
64 Dots
1st Step of Motor
3rd Block
64 Dots
4th Block
64 Dots
5th Block
64 Dots
2nd Step of Motor
6th Block
64 Dots
Note: for a stepping motor driving method, see 9.2 Motor Drive.
9.1.2 Variable Division Number System
This system counts the number of printing dots for each block of the printing dot line and drives
the blocks collective in such a manner not to exceed the maximum number of driving dots (64
dots).
1st Block
64 Dots
2nd Block
64 Dots
3rd Block
64 Dots
1st Step of Motor
1st Step of Motor
4th Block
64 Dots
5th Block
64 Dots
6th Block
64 Dots
2nd Step of Motor
2nd Step
1 Dot Line
1 Dot Line
19
9.2 Motor Drive
The MLT-288 uses a 4-phase bipolar stepping motor. It feeds the 1 dot line worth of paper in
two steps by 2-to-2 phase excitation.
9.2.1 Motor Drive Features
1) Drive at an optimum drive speed by the VP voltage.
2) Prevents heat generation of the motor by PWM control to restrain current consumption.
3) Provides acceleration control at the time of start.
9.2.2 Maximum Motor Drive Speeds at Major Voltage
BD2-2880/2890 User’s Manual
VH Voltage
5V
6V
7.2V
Motor Drive Speed
400pps
600pps
840pps
Caution: The maximum drive speed depends on the VH voltage.
A printing speed may slightly differ depending on a processing time or voltage
detection accuracy. During the course of printing, a motor drive speed may be slower
than the maximum drive speed, depending on what is printed or the head divided drive
system.
20
10. MAINTENANCE AND SERVICE
For the information on maintenance and service, please contact our dealer or at the following
address.
Northern America Other Areas
CBM America Corporation Japan CBM Corporation
Service Center Information Systems Division
363 Van Ness Way Suite 404 5-68-10, Nakano Nakano-ku,
Torrance, CA 90501, U.S.A Tokyo 164-0001 Japan
TEL 310-781-1460 TEL 03-5345-7540
FAX 310-781-9157 FAX 03-5345-7541
BD2-2880/2890 User’s Manual
21
APPENDIX 1. BLOCK DIAGRAM
Cutter
BD2-2880/2890 User’s Manual
Driver
Driver
Timing
CN3
OSC 16.0MH
CPU
Reset
FLASH
MEMORY
Driver
RAM
G/A
Print Head
Operation Panel
Parallel
(Centronics)
Serial
(RS-232C)
Power Supply
22
Stepping
Moter
Paper End
Head Up
APPENDIX 2. OUTER DIMENSION
IC2 IC1 CN1
75
BD2-2880/2890 User’s Manual
ø 2 × 4
BD2–288
67
4
CN3
CN4
TA2
72
80
IC6
TR2
CN2
TA2
12
TA2
IC101
1.6
3
(Unit : mm)
23
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