Epson TM-U950 Technical Manual

Rev. A Mechanism Configuration and Operating Principles 2-31
TM-U950/U950P Technical Manual
Control circuitry
CPU (M37702)
The CPU controls all printer operations according to a control program in ROM. The CPU pin
assignments are shown in Table 2-1.
Table 2-1. CPU Pin Assignments
Pin
number
CPU function Signal designation I/O Level Description
1 ANO V_DTC I Analog Detect 24 V voltage
2 P67 PFR2 O TTL Receipt paper feed motor Phase C,D
3 P66 PFR1 O TTL Receipt paper feed motor Phase A, B
4 P65 PFJ2 O TTL Journal paper feed motor Phase C, D
5 P64 PFJ1 O TTL Journal paper feed motor Phase A, B
6 P63 DSR I TTL
DSR signal input from serial interface on the
host
7P62
CSTRB(CSTB for the
TM-U950P)
I TTL Not used (receive interrupt for the TM-U950P)
8 P61 PFR_HL I/O TTL Receipt paper feed motor hold H = hold
9 P60 PFJ_HL I/O TTL Journal paper feed motor hold H = hold
10 P57 DKD_2 O TTL Drawer kick-out drive signal 1 L = drive
11 P56 DKD_1 O TTL Drawer kick-out drive signal 2 L = drive
12 P55 AC_2 O TTL Auto-cutter motor drive signal 2
13 P54 AC_1 O TTL Auto-cutter motor drive signal 1
14 P53 SHB O TTL Slip paper holder solenoid drive signal L=drive
15 P52 ER_LED O TTL Error LED drive signal L = ON
16 P51 SL_LED O TTL Slip paper LED drive signal L = ON
17 P50 CSOK O TTL
Slip paper eject detector LED drive signal L =
ON
18 P47 STB O TTL Stamp solenoid drive signal L = ON
19 P46 CR_NM O TTL
Carriage motor control signal H = normal
rotation
20 P45 CR_HL O TTL Carriage motor control signal H = hold
21 P44 CR_2 O TTL Carriage motor control signal Phase C, D
22 P43 CR_1 O TTL Carriage motor control signal Phase A, B
23 (0) FAI O TTL Receive interrupt
24 (RDY
) (RDY) I TTL Fixed to H (pulled up to +5V)
25 (HOLD
)(HOLD) I TTL Fixed to H (pulled up to +5 V)
26 BYTE BYTE I TTL Fixed to H (pulled up to +5V)
27 (CNV
ss
)(CNV
ss
) I TTL Fixed to H (connected to +5 V)
28 (RESET
)(RESET) I TTL Reset signal input L = reset
CONFIDENTIAL

Epson TM-U950 Specifications

General

Print speed	18.6 ips
Character size	1.3 x 3.1 mm
Print technology	Dot matrix
Paper dimensions	210 x 297 mm
Dimensions (WxDxH)	251 x 298 x 194.5 mm
Electromagnetic compatibility	VCCI, FCC, CE
Safety	UL, CSA
Country of origin	China
Mean time between failures (MTBF)	180000 h
Serial interface	Yes
Standard interfaces	RS-232C
Weight (imperial)	12.3 lbs
Pallet width	1200 mm
Pallet height	1000 mm
Pallet length (UK)	2250 mm
Quantity per pallet	24 pc(s)
Quantity per pallet (UK)	36 pc(s)
Quantity per pallet layer	4 pc(s)
Harmonized System (HS) code	84433210
Quantity per pallet layer (UK)	6 pc(s)
Package depth	425 mm
Package width	360 mm
Package height	330 mm
Package weight	7196 g
Quantity per pack	1 pc(s)

Weight and Dimensions

Depth	298 mm
Width	186 mm
Height	195 mm