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SERVICE MANUAL
DT-9000 SERIES
( PX-650 / PX-651 / PX-676 )
March 1995
INDEX


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CONTENTS
Page
1 . DT-9000 LINE U P ------------------------------------------------------------- 1
2 . FEATURES --------------------------------------------------------------------- 1
3 . SPECIFICATION--------------------------------------------------------------- 1
4 . I/F PIN ASSIGNMENT -------------------------------------------------------- 4
5 . BLOCK DIAGRAM ------------------------------------------------------------- 6
6 . DISASSEMBLY ---------------------------------------------------------------- 9
7 . DIAGNOSTIC TEST ---------------------------------------------------------- 1 9
8 . WIRING OF LOOP BACK CONNECTOR ---------------------------------- 3 0
9 . CIRCUIT EXPLANATION ---------------------------------------------------- 3 1
1 0 . TROUBLESHOOTING-------------------------------------------------------- 3 7
1 1 . CIRCUIT DIAGRAMS--------------------------------------------------------- 3 8
1 2 . PARTS LIST ------------------------------------------------------------------- 7 1


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1
1 . DT-9000 LINE U P
Model
Production
No.
Printer
Memory capacity
DT-9000M32
PX-650EA
58mm
PS-RAM 1MB
DT-9000M52
PX-650GA
58mm
PS-RAM 2MB
DT-9000M92
PX-650KA
58mm
PS-RAM 1MB + FROM 4MB
DT-9000M33
PX-651EA
80mm
PS-RAM 1MB
DT-9000M53
PX-651GA
80mm
PS-RAM 2MB
DT-9000M93
PX-651KA
80mm
PS-RAM 1MB + FROM 4MB
DT-9000M30
PX-676EA
Nil
PS-RAM 1MB
DT-9000M50
PX-676GA
Nil
PS-RAM 2MB
DT-9000M90
PX-676KA
Nil
PS-RAM 1MB + FROM 4MB
2 . FEATURES
· High speed printer
50mm : 29 Lines/sec.
80mm : 25 Lines/sec.
· Small size & Light weight
DT-9000M32/M52/M92
240 x 85(98) x 28(37)mm
520g
DT-9000M33/M53/M92
242 x 85(114) x 28(37)mm
560g
DT-9000M30/M50/M90
196 x 85 x 31mm
385g
Note: The size in the ( ) is including printer block.
· Drip-proof ( Water resistant )
· Big memory
Max. 5MB
· High speed data transfer
100Kbps ( at 9PIN I/F: HT to HT)
· Analog touch panel
· Automatically ON/OFF control of back light
3 . SPECIFICATION
3-1. Power supply
Battery Type :
Battery Name
Main Power
Lithium Ion battery pack :
NP-500
Battery period :
10 hours ( with back light ON) or 15,000 lines printing
Charging time :
8 hours (Full charge)
Capacity :
1,200 mAH
Output voltage :
7.2V
Charging voltage :
DC 8.40 V
± 0.05 V
Charging current :
DC 300 mA
± 30 mA
Durability :
Approx. 500 times ( 60 % capacity )
Memory protection
Primary battery and Rechargeable battery


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2
Primary :
Lithium battery
CR2032
Rechargeable :
Lithium Vanadium battery
VG2430
Charging time : 64 hours by Main battery
Back up period :
More than 1 month (at no main power)
Back up method :
VG2430 is back up the memory first.
When the VG2430 is empty, CR2032 is back up.
3-2 Printer
Printer model : EPL1321C3
58mm
EPL1311H2
80mm
Print method : Thermal dot line printing
Print head :
384 dot/line (58mm)
576 dot/line (80mm)
Dot pitch : 0.125mm
Font size/Character number
Normal size (Alpha-numeric )
Printer type
6 x 12 dot
8 x 16 dot
12 x 24 dot
58mm
32 character
24 character
16 character
80mm
48 character
36 character
24 character
Double size (Kanji)
Printer type
12 x 12 dot
16 x 16 dot
24 x 24 dot
58mm
16 character
12 character
8 character
80mm
24 character
18 character
12 character
Print speed :
58 mm : 20 lines/sec. (24 x 24 dot )
29 lines/sec. (8 x 16 dot )
80 mm :17 lines/sec. (24 x 24 dot )
25 lines/sec. (8 x 16 dot )
Note : This printer has a thermal sensor for head.
In case the head temperature becomes high, printer prints slowly.
Paper spec. :
1P, 2P, Label paper
Sensor :
Paper mark sensor ( at back side of paper )
It is used for start position of printing.
Durability :
30 km ( for Head unit )
3-3. Key
Analog touch panel :
Contact :
192 x 384 points
Durability :
800,000 times
Stroke key :
14 keys+ Power keys
Durability :
More than 300,000 times


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3
3-4. LCD display
Dot number :
192 x 384 dot
Back light :
EL panel : It is controlled by software.
Durability : 2,000 hours
Contrast :
It is controlled by software.
Display font size/ Screen capacity
Normal size
6 x 12 dot :
32 characters x 32 lines
(Alpha-numeric) 8 x 16 dot :
24 characters x 24 lines
12 x 24 dot :
16 characters x 16 lines
Double size
12 x 12 dot :
16 characters x 32 lines
(Kanji)
16 x 16 dot :
12 characters x 24 lines
24 x 24 dot :
16 characters x 16 lines
3-5. Interface
· 9 pin I/F
Purpose :
for Handy to Handy, BCR, other machine
Type :
Serial inter face
Speed :
1200 ~ 38400bps
Handy to handy : 100Kbps
Transfer method:
Start-stop synchronous transmission
· Infrared I/F
Purpose :
for data transfer to I/O box
( IR I/F)
Type :
Infrared
Speed :
1200 ~ 19200bps
Remote drive : 100Kbps
Transfer method :
Start-stop transmission, Synchronous transmission,
Remote drive
· Memory card Type :
JAIDA Ver4.1
TYPE2
· 3 pin I/F
Purpose :
for FDD connection
Type :
Serial (SD, RD, GND)
Speed :
1200 ~ 38400bps
Transfer method :
Start-stop transmission
· 14 PIN I/F
Purpose :
Other device ( Future function)
Type :
Serial interface
Speed :
1200 ~ 19200 bps
Transfer method :
Start-stop synchronous transmission, Synchronous
transmission
3-6. MCBF for DT-9000
MCBF : Approx. 19,100 hours ( Except printer unit )