Epson FX-2190 Service Manual

EPSON FX-890/2190 Revision B
Operating Principles Overview 47
2.1.2 Circuit Operation
2.1.2.1 C524 MAIN Board
The C524 MAIN board is the control circuit board of this printer. This board consists
of several IC chips and drivers, as described in the table below:
Table 2-2. Major Elements on MAIN Board
Elements Location Function
CPU/ASIC
(2in1ASIC)
IC1
 Package: 240 SQFP (0.5 mm between pins)
 Manufacturing process: 0.35µ Cell base IC
 CPU (H8S/2670 (Hitachi) equivalent)
• Operating frequency: 24 MHz
 I/F section (E05B80CC (Hitachi series) equivalent)
• Operating frequency: 48 MHz
• Function: E05B80C
• Memory cycle: 3 states (1 state 41.7 ns, RDNn = 0, no CS
assertion)
 Mechanical Controller section (E05B85YA (Fujimi)
equivalent)
• Operating frequency: 24 MHz
• Memory cycle: 3 states (1 state 41.7 ns, RDNn = 0, no CS
assertion)
PROM
(Flash ROM)
IC4
 Use: Program
 Type: MBM29LV800BA-90
 Capacity: 8Mbit
 Package: 44SOP
 Bit configuration: 8/16 switching type
 Bus width: 16 bits
 Access time: tCE 181 ns or less
tACC 181 ns or less
tOE 156 ns or less
tDF 60 ns or less
 Memory cycle: 3 states 1 weight
(1 state 50.6 ns, RDNn = 0, no CS
assertion)
DRAM IC5
 Use: Various buffers, work areas
 Device: MSM51V18165D
 Type: 2CAS type 16-Mbit DRAM of access time
60 ns with page access function
 Bus width: 16 bits
 Package: 50-pin TSOP II
 Memory cycle: 4 states at normal times (1 state 50.6 ns)
2 states in burst mode (1 state 50.6 ns)
 Refresh: Refresh controller of the CPU is used
(CBR method)
Period: 1,024 cycles/16 ms (15.625 us or
less)
EEPROM IC11
 Use: Storage of default setting values and
various parameters
 Device: S-93C46ADFJ (SII) (10 ms/word writing)
 Capacity: 1 kbits
 Package: SOP8 pin (150 mil)
Parallel IF circuit
 Specification: IEEE1284 compliant Nibble
 Data receiving system: Data transfer by DMA
 ACK pulse width: Can be selected
 Data transfer timing: Can be selected
 Transceiver IC: 74LVX161284 (FAIRCHILD) (IC2)
 Control circuit: Inside the ASIC
USB IF circuit
 Specification: Universal Serial Bus Specification
Revision 1.1
 Reception mode:Full speed mode (D+ signal line is pulled
up to +3.3V with 1.5 k
Ω)
Pull-up of D+ signal line is not activated
until the logic system becomes stable after
power on.
 Receiving system: Bulk transfer / control transfer
 Data reception capacity: About 1.15 MB/s at peak (Bulk
transfer)
 Control circuit: Inside the ASIC
Table 2-2. Major Elements on MAIN Board (continued)
Elements Location Function

Epson FX-2190 Specifications

General

Maximum print size	A3 (297 x 420 mm)
Color	No
Character pitch	10 cpi
Maximum resolution	240 x 144 DPI
Maximum printing width (columns)	136
Print technology	Dot matrix
Dimensions (WxDxH)	589 x 360 x 157 mm
Standard interfaces	Parallel, USB 1.1
Optional connectivity	Ethernet
Country of origin	Indonesia
Sound pressure level (printing)	55 dB
Mean time between failures (MTBF)	20000 h
Sustainability certificates	ENERGY STAR
Windows operating systems supported	Windows 2000, Windows 2000 Professional, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
Power consumption (typical)	53 W
Operating temperature (T-T)	5 - 35 °C
Operating relative humidity (H-H)	10 - 80 %
Pallet width	1200 mm
Pallet height	1000 mm
Pallet length (UK)	2040 mm
Quantity per pallet	14 pc(s)
Quantity per pallet (UK)	21 pc(s)
Quantity per pallet layer	2 pc(s)
Quantity per pallet layer (UK)	3 pc(s)
Package depth	700 mm
Package width	460 mm
Package height	270 mm
Package weight	11740 g
Quantity per pack	1 pc(s)