SERVICE MANUAL
DT-9060I/O
(PX-653)
September 1995
INDEX
CONTENTS
Page
1 .FEATURES ........................................................................... 1
2 .SPECIFICATIONS ................................................................ 1
3 .BLOCK DIAGRAM................................................................. 3
4 .DISASSEMBLE .................................................................... 4
5 .DIAGNOSTIC........................................................................ 5
5-1. Preparation.......................................................................5
5-2. To start the diagnostic t e s t ..................................................5
5-3. Execute t e s t .....................................................................5
5-4. Error code list ...................................................................9
5-5. Loop back connector ..........................................................9
6 .CIRCUIT DIAGRAMS ...........................................................11
7 .PARTS LIST ....................................................................... 1 6
--1 --
1 . FEATURES
DT-9060I/O box is connected by infrared light interface to DT-9000 and convert to RS-232C or 3 pin
serial interface inside of I/O box.
2 . SPECIFICATIONS
2-1. Infrared interface
· Inter face:
Infrared interface (non-contact type )
· Type of synchronization: start stop synchronous / independent synchronous / remote drive
type
· Transmitting speed:
start stop synchronous:
1200 ~ 19200 bps
Independent synchronous:
1200 ~ 9600 bps
Remote drive:
100 K bps
(depending on the counter of personal computer )
· Transmission control procedure:
half dual / whole dual type / remote drive
· Function:
RS-232 C DTE interface / 3 pin serial interface
2-2. RS-232C specification
· Type of synchronization:
start stop synchronous / independent synchronous
· Transmitting speed:
Start stop synchronous :
300 ~ 19,200 bps
Independent synchronous :
300 ~ 9600 bps
Remote drive :
100,000 bps
· Transmission control procedure :
whole dual / half dual
· Function ( BASIC level )
Parity:
None, Even , Odd
Length of character bit:
7 bit /8 bit
Length of stop bit:
1bit / 1.5 bit / 2 bit
RTS signal control:
control with / without ( half dual / whole dual )
CTS signal control:
control with / without ( Time out 0 ~ 25.5s )
DSR signal control:
control with / without ( Time out 0 ~ 25.5s )
CD signal control:
control with / without ( Time out 0 ~ 25.5s )
Busy control:
control with / without ( XON/ XOFF Control )
I/O code control:
control with / without (only for 7 bit character length )
Receiving delete code control: Cut code with / without control (Max. 4 )
NCU option designation:
Auto-transmitting receiving by NCU/MODEM
--2 --
· Specification of connector pin
RS-232C connector (14 Pin)
Signal
Pin No.
Signal
FG
1
2
Not used.
SD
3
4
ST2
RD
5
6
RT
RS
7
8
ER
CS
9
10
CI
DR
11
12
ST1
CD
13
14
SG
2-3. Specification of 3 pin serial interface
· Voltage:
CMOS level
· Synchronous type:
start stop synchronous
· Transferring speed:
1,200 ~ 38,400 bps
· Specification of connector pin
3 Pin connector
Signal Pin No
GND
1
RD
2
SD
3
2-4. Power supply
· Adapter specification :
9V / 600 mA
· Power consumption :
335 mA
2-5. Charging function
The DT-9000 can be charged during it is on the DT-9060I/O.
· Charging voltage :
DC8.40 V
± 0.05V
· Charging current :
DC300mA
± 30 mA
· Charging time :
8 hours
--3 --
3 . BLOCK DIAGRAM
IC4
TC74HCT04
IC3
TC74HC240
IC6
MAX211
IC7
MAX222
LED
IR PCB ASS'Y
3 PIN I/F
RS232C I/F
IC2
TC74HC00
IC5
TC74HC244
To Modem
RS232C/3 Pin I/F
selector
SW1
Adaptor
jack
Power
switch
SW2
Push switch
To charging terminal of
DT-9000
GND