Epson Stylus Pro XL Service Manual Page 15
- Page / 59
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
2.3 OPERATING PRINCIPLES OF THE ELECTRICAL CIRCUITS
The Stylus Color Pro XL+ contains the following circuit board units:
❒ C184 MAIN board (main control circuit board).
❒ C137 PSB/PSE board (power supply circuit board). This board is the same as Stylus Color’s
❒ C137 PNL (control panel board). This board is similar to Stylus Color’s.
In addition to the circuit boards above, part of the printhead drive circuit is built on a separate circuit board
installed in the carriage unit; the printhead is attached directly to this board. The figure below shows a block
diagram of the electrical circuits.
2.3.1 Operating Principles of the Main Control Circuit
The main control circuit for this printer is the C184 MAIN board. This circuit is controlled by a 16-bit
H8/3003 CPU (IC1), running at 14.7456 MHz. The CPU has a unique architecture, capable of handling data
on the data bus at either an 8-bit or 16-bit bus width. Because of this, both a 16-bit and an 8-bit data bus
width-type ROM can be used on the board, increasing the internal processing speed. Also, the CPU’s unique
architecture is capable of refresh control. In addition, the CPU controls the serial interface (RS-422 for Mac)
and optional interface (Type B interface).
Gate array E05B21 (IC2) manages the printhead driver, the external Centronics
®
parallel interface, the
extension CG board, and the control panel. The gate array also oversees the controls that create the 4-bit
signals for the carriage or the paper feed motor. (The carriage and paper feed motor are controlled by current
duty data.) This board also is equipped with a 93C46 EEPROM (IC11) to store certain parameters, such as the
black/color head data, printer mechanism control parameters, default setting parameters, as well as a special
counter value used for printhead (ink management) protection.
Timer IC NJU6355E (IC10) counts each time the printer goes through its cleaning cycle and keeps track of
how much time has elapsed since the printer has been used, thereby allowing the printer to be cleaned only
when necessary. The timer value is backed up by the lithium battery.
M
C
L
K
SD
I/
O
DMAREQ
D-RAM (4M)
(IC5)
D-RAM (4M)
(IC6)
EEPROM
(IC11)
93C46
(IC8)
M51955B
Vx
NJU6355E
(Timer Counter)
(IC10)
(IC9)
PST592D
RS-422
Serial I/F
T
o
A
T
o
B
From A
From B
C184 MAIN Board
SED6110DOA
(U1, U2)
SLA7043M (IC14, 15)
H8/3003
(IC1)
CPU
E05B21
(IC2)
Black 64 Nozzles
Color 48 Nozzles
Carriage / Paper Feed
Motor Driver
MROM (4-32M)
(IC7)
P-ROM (4M)
(IC3)
P-ROM (1-4M)
(IC4)
Type-B I/F
H8D2778A (IC16, 17)
SN75LBC775
(IC13)
Data Bus
Address Bus
Refresh
Reset (Power)
Reset (Logic)
Panel
Black/Color Head
Common Driver Circuit
Parallel I/F
Carriage / Paper Feed
Motor Driver Signal
Black / Color Head
Common and Nozzle
Selector Drive Signal
Figure 2-1. Main Control Circuit Block Diagram
Operating Principles Stylus Pro XL+ Service Manual
2-2 Rev.A
- SERVICE MANUAL 1
- REVISION SHEET 3
- 1.1 FEATURES 4
- 1.2 SPECIFICATIONS 5
- 1.3 INTERFACE SPECIFICATIONS 7
- (Forward Channel) 8
- (Reverse Channel) 9
- 1.4 OPERATIONS 11
- Indicators 12
- 1.4.3 Error Conditions 13
- Table 1-4. Error Indications 13
- 2.3.2.1 Reset Circuits 16
- 2.3.2.2 Sensor Circuits 17
- E05B21 (IC2) 20
- C184 MAIN 20
- Common Driver Signals 21
- (Normal Dot Printing) 22
- BH1C0/CH1C0 23
- BH1C1/CH1C1 23
- BH1D/CH1D 23
- 2.4 INK SYSTEM MANAGEMENT 24
- 3.2 DISASSEMBLY AND ASSEMBLY 26
- 4.1ADJUSTMENT - OVERVIEW 28
- Nozzle Select Circuit Board 30
- Head VH Value 30
- Shape and Thickness 32
- Linear Spacers 35
- (Angle Adjustment Concept) 36
- (Spacer Setting Location) 36
- Spacer Name Thickness Shape 37
- Figure 4-11. Spacer Selection 38
- Angular Spacer 41
- HEAD GAP ADJUST NO. X 42
- Black Line 42
- Color (Magenta) Line 42
- Right Adjustment Position 46
- Paper Guide Plate 46
- Pump Unit 46
- Figures 4-17 and 4-18 47
- 4-20 Rev.A 47
- 4.1.10 Head Cleaning Function 49
- A.1 CONNECTOR SUMMARY 50
- Table A-1. Connector Summary 51
- Rev.A A-9 55
- A-10 Rev.A 56
Related products and manuals for Print & Scan Epson Stylus Pro XL
Print & Scan Epson FX-980 User's Guide
(245 pages)
(245 pages)
Print & Scan Epson XP-810 User Manual
(2 pages)
(2 pages)
Print & Scan Epson WF-5690 User's Guide
(210 pages)
(210 pages)
(2 pages)
(28 pages)
Print & Scan Epson EMP 810 User's Guide
(21 pages)
(21 pages)
Print & Scan Epson 188 User Manual
(76 pages)
(76 pages)
Print & Scan Epson XP-520 User Manual
(4 pages)
(4 pages)
Print & Scan Epson XP-850 User Manual
(2 pages)
(2 pages)
© 2020, manymanuals.com. All rights reserved. | 0.629 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals